subject:"\[Kernel\-packages\] \[Bug 1886277\] Re\: Regression on NFS\: unable to handle page fault in mempool_alloc

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-10-26 Thread Po-Hsu Lin

Hi Alex,
can you open a new bug to track this issue with command "ubuntu-bug linux"?
Thank you!

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Title:
  Regression on NFS: unable to handle page fault in mempool_alloc_slab

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Focal:
  Fix Released

Bug description:
  On kernel 5.4.0-40-generic in focal I'm getting errors like this on
  several machines with different hardware in the first hour after boot:

  Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for 
address: 9083e222e632
  Jul 04 16:58:32 hostname kernel: #PF: supervisor read access in kernel mode
  Jul 04 16:58:32 hostname kernel: #PF: error_code(0x) - not-present page
  Jul 04 16:58:32 hostname kernel: PGD 3ac205067 P4D 3ac205067 PUD 0
  Jul 04 16:58:32 hostname kernel: Oops:  [#1] SMP NOPTI
  Jul 04 16:58:32 hostname kernel: CPU: 4 PID: 289 Comm: kworker/u16:4 Tainted: 
G   OE 5.4.0-40-generic #44-Ubuntu
  Jul 04 16:58:32 hostname kernel: Hardware name: LENOVO 20N2CTO1WW/20N2CTO1WW, 
BIOS N2IET88W (1.66 ) 04/22/2020
  Jul 04 16:58:32 hostname kernel: Workqueue: rpciod rpc_async_schedule [sunrpc]
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12: 9083e222e632
  Jul 04 16:58:32 hostname kernel: R13: 00092800 R14: 908367ca6140 
R15: 908367ca6140
  Jul 04 16:58:32 hostname kernel: FS:  () 
GS:90836c30() knlGS:
  Jul 04 16:58:32 hostname kernel: CS:  0010 DS:  ES:  CR0: 
80050033
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632 CR3: 0003ab80a003 
CR4: 003606e0
  Jul 04 16:58:32 hostname kernel: Call Trace:
  Jul 04 16:58:32 hostname kernel:  ? mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc+0x64/0x180
  Jul 04 16:58:32 hostname kernel:  rpc_malloc+0xa1/0xb0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  call_allocate+0xd1/0x1b0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  ? call_refreshresult+0x100/0x100 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  __rpc_execute+0x8c/0x3a0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  rpc_async_schedule+0x30/0x50 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  process_one_work+0x1eb/0x3b0
  Jul 04 16:58:32 hostname kernel:  worker_thread+0x4d/0x400
  Jul 04 16:58:32 hostname kernel:  kthread+0x104/0x140
  Jul 04 16:58:32 hostname kernel:  ? process_one_work+0x3b0/0x3b0
  Jul 04 16:58:32 hostname kernel:  ? kthread_park+0x90/0x90
  Jul 04 16:58:32 hostname kernel:  ret_from_fork+0x35/0x40
  Jul 04 16:58:32 hostname kernel: Modules linked in: rfcomm rpcsec_gss_krb5 
auth_rpcgss nfsv4 nfs lockd grace fscache vboxnetadp(OE) vboxnetflt(OE) 
vboxdrv(OE) msr ccm cmac algif_hash algif_skcipher af_alg aufs bnep overlay 
nls_iso8859_1 mei_hdcp intel_rapl_msr snd_s>
  Jul 04 16:58:32 hostname kernel:  nvram ledtrig_audio mei_me cfg80211 mei 
processor_thermal_device snd_seq ucsi_acpi typec_ucsi intel_rapl_common 
intel_soc_dts_iosf snd_seq_device typec intel_pch_thermal snd_timer snd 
int3403_thermal soundcore int340x_thermal_zone i>
  Jul 04 16:58:32 hostname kernel:  pinctrl_cannonlake video pinctrl_intel
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632
  Jul 04 16:58:32 hostname kernel: ---[ end trace cbbaed921eb439ce ]---
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11:

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-10-22 Thread Alex

Seems a same bug on Ubuntu 20.04 kernel 5.4.0-52. The bug reproduces for me 
only under high load of CPU(for example, java compilation process)
-
[10798.058030] bpfilter: Loaded bpfilter_umh pid 17193
[10798.058119] Started bpfilter
[14269.588116] BUG: unable to handle page fault for address: 919d84135500
[14269.588119] #PF: supervisor read access in kernel mode
[14269.588119] #PF: error_code(0x) - not-present page
[14269.588120] PGD 1f4c01067 P4D 1f4c01067 PUD 0 
[14269.588122] Oops:  [#1] SMP NOPTI
[14269.588123] CPU: 5 PID: 21991 Comm: Chrome_ChildIOT Kdump: loaded Not 
tainted 5.4.0-52-generic #57-Ubuntu
[14269.588123] Hardware name: Gigabyte Technology Co., Ltd. B365M D3H/B365M 
D3H-CF, BIOS F3c 11/28/2019
[14269.588126] RIP: 0010:lock_page_memcg+0x1f/0x90
[14269.588127] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 0f 1f 44 00 00 55 48 89 
e5 41 55 41 54 53 0f 1f 44 00 00 48 89 fb 4c 8b 67 38 4d 85 e4 74 36 <41> 8b 84 
24 00 05 00 00 85 c0 7e 2d 4d 8d ac 24 b8 04 00 00 4c 89
[14269.588128] RSP: 0018:b6ca43047bc8 EFLAGS: 00010286
[14269.588129] RAX: eaf69e86afc0 RBX: eaf69e86afc0 RCX: 8005
[14269.588129] RDX:  RSI:  RDI: eaf69e86afc0
[14269.588130] RBP: b6ca43047be0 R08: eaf69e86afc0 R09: 
[14269.588130] R10: 0001 R11: 91bdaf7d5000 R12: 919d84135000
[14269.588131] R13: 55986f674000 R14: 8007a1abf005 R15: 55986f675000
[14269.588132] FS:  7f7768299700() GS:91bd8f34() 
knlGS:
[14269.588132] CS:  0010 DS:  ES:  CR0: 80050033
[14269.588133] CR2: 919d84135500 CR3: 0001f420a002 CR4: 003606e0
[14269.588134] DR0:  DR1:  DR2: 
[14269.588134] DR3:  DR6: fffe0ff0 DR7: 0400
[14269.588134] Call Trace:
[14269.588137]  page_remove_rmap+0xa5/0x310
[14269.588139]  ? tlb_flush_mmu+0x3a/0x140
[14269.588140]  zap_pte_range.isra.0+0x273/0x7f0
[14269.588141]  unmap_page_range+0x2da/0x4a0
[14269.588142]  unmap_single_vma+0x7f/0xf0
[14269.588143]  unmap_vmas+0x79/0xf0
[14269.588144]  exit_mmap+0xb4/0x1b0
[14269.588146]  mmput+0x5d/0x130
[14269.588147]  do_exit+0x306/0xac0
[14269.588148]  __x64_sys_exit+0x1b/0x20
[14269.588150]  do_syscall_64+0x57/0x190
[14269.588152]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[14269.588153] RIP: 0033:0x559870c0bee5
[14269.588155] Code: Bad RIP value.
[14269.588155] RSP: 002b:7f77682979a0 EFLAGS: 0246 ORIG_RAX: 
003c
[14269.588156] RAX: ffda RBX:  RCX: 559870c0bee5
[14269.588156] RDX: 0001 RSI: 0009 RDI: 
[14269.588157] RBP: 7f7768297d20 R08: 008c R09: 000e
[14269.588157] R10:  R11: 0246 R12: 7f7768297d30
[14269.588158] R13:  R14: 0003 R15: 
[14269.588159] Modules linked in: xt_tcpudp xt_state xt_conntrack nf_conntrack 
nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c ip6table_filter ip6_tables 
iptable_filter bpfilter cpuid snd_hda_codec_hdmi intel_rapl_msr 
intel_rapl_common x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm 
snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio mei_hdcp 
snd_hda_intel crct10dif_pclmul snd_intel_dspcfg ghash_clmulni_intel aesni_intel 
crypto_simd cryptd snd_hda_codec glue_helper rapl snd_hda_core intel_cstate 
snd_usb_audio snd_usbmidi_lib snd_hwdep mc snd_pcm nls_iso8859_1 snd_seq_midi 
snd_seq_midi_event snd_rawmidi snd_seq wmi_bmof i915 snd_seq_device snd_timer 
input_leds snd joydev soundcore drm_kms_helper i2c_algo_bit mei_me fb_sys_fops 
mei syscopyarea sysfillrect sysimgblt acpi_pad mac_hid acpi_tad sch_fq_codel 
parport_pc ppdev lp parport drm ip_tables x_tables autofs4 hid_generic usbhid 
hid crc32_pclmul nvme e1000e nvme_core i2c_i801 ahci libahci wmi video
[14269.588179] CR2: 919d84135500

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Title:
  Regression on NFS: unable to handle page fault in mempool_alloc_slab

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Focal:
  Fix Released

Bug description:
  On kernel 5.4.0-40-generic in focal I'm getting errors like this on
  several machines with different hardware in the first hour after boot:

  Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for 
address: 9083e222e632
  Jul 04 16:58:32 hostname kernel: #PF: supervisor read access in kernel mode
  Jul 04 16:58:32 hostname kernel: #PF: error_code(0x) - not-present page
  Jul 04 16:58:32 hostname kernel: PGD 3ac205067 P4D 3ac205067 PUD 0
  Jul 04 16:58:32 hostname kernel: Oops:  [#1] SMP NOPTI
  Jul 04 16:58:32 hostname kernel: CPU: 4 PID: 289 Comm: kworker/u16:4 Tainted: 
G

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-09-28 Thread Andrew Conway

5.4.0-48-generic seems to have fixed this problem for me, thanks!

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https://bugs.launchpad.net/bugs/1886277

Title:
  Regression on NFS: unable to handle page fault in mempool_alloc_slab

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Focal:
  Fix Released

Bug description:
  On kernel 5.4.0-40-generic in focal I'm getting errors like this on
  several machines with different hardware in the first hour after boot:

  Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for 
address: 9083e222e632
  Jul 04 16:58:32 hostname kernel: #PF: supervisor read access in kernel mode
  Jul 04 16:58:32 hostname kernel: #PF: error_code(0x) - not-present page
  Jul 04 16:58:32 hostname kernel: PGD 3ac205067 P4D 3ac205067 PUD 0
  Jul 04 16:58:32 hostname kernel: Oops:  [#1] SMP NOPTI
  Jul 04 16:58:32 hostname kernel: CPU: 4 PID: 289 Comm: kworker/u16:4 Tainted: 
G   OE 5.4.0-40-generic #44-Ubuntu
  Jul 04 16:58:32 hostname kernel: Hardware name: LENOVO 20N2CTO1WW/20N2CTO1WW, 
BIOS N2IET88W (1.66 ) 04/22/2020
  Jul 04 16:58:32 hostname kernel: Workqueue: rpciod rpc_async_schedule [sunrpc]
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12: 9083e222e632
  Jul 04 16:58:32 hostname kernel: R13: 00092800 R14: 908367ca6140 
R15: 908367ca6140
  Jul 04 16:58:32 hostname kernel: FS:  () 
GS:90836c30() knlGS:
  Jul 04 16:58:32 hostname kernel: CS:  0010 DS:  ES:  CR0: 
80050033
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632 CR3: 0003ab80a003 
CR4: 003606e0
  Jul 04 16:58:32 hostname kernel: Call Trace:
  Jul 04 16:58:32 hostname kernel:  ? mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc+0x64/0x180
  Jul 04 16:58:32 hostname kernel:  rpc_malloc+0xa1/0xb0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  call_allocate+0xd1/0x1b0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  ? call_refreshresult+0x100/0x100 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  __rpc_execute+0x8c/0x3a0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  rpc_async_schedule+0x30/0x50 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  process_one_work+0x1eb/0x3b0
  Jul 04 16:58:32 hostname kernel:  worker_thread+0x4d/0x400
  Jul 04 16:58:32 hostname kernel:  kthread+0x104/0x140
  Jul 04 16:58:32 hostname kernel:  ? process_one_work+0x3b0/0x3b0
  Jul 04 16:58:32 hostname kernel:  ? kthread_park+0x90/0x90
  Jul 04 16:58:32 hostname kernel:  ret_from_fork+0x35/0x40
  Jul 04 16:58:32 hostname kernel: Modules linked in: rfcomm rpcsec_gss_krb5 
auth_rpcgss nfsv4 nfs lockd grace fscache vboxnetadp(OE) vboxnetflt(OE) 
vboxdrv(OE) msr ccm cmac algif_hash algif_skcipher af_alg aufs bnep overlay 
nls_iso8859_1 mei_hdcp intel_rapl_msr snd_s>
  Jul 04 16:58:32 hostname kernel:  nvram ledtrig_audio mei_me cfg80211 mei 
processor_thermal_device snd_seq ucsi_acpi typec_ucsi intel_rapl_common 
intel_soc_dts_iosf snd_seq_device typec intel_pch_thermal snd_timer snd 
int3403_thermal soundcore int340x_thermal_zone i>
  Jul 04 16:58:32 hostname kernel:  pinctrl_cannonlake video pinctrl_intel
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632
  Jul 04 16:58:32 hostname kernel: ---[ end trace cbbaed921eb439ce ]---
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12:

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-09-28 Thread Marc Kolly

mainline 5.4.60-050460-generic #202008210836 did indeed fix the setup
for me, I just forget to get back to you guys here.

Hello Martin,
It looks like the fix had not been included in the 5.4.0-47 release, but only 
in the following 5.4.0-48 release.

Have you had the time to update to the updated kernel included with
Ubuntu 20.04 and see if it has been fixed for you?

On a possibly connected note, may I ask you how you are mounting the nfs share 
on the client?
My server: Linux storage 4.19.0-9-amd64 #1 SMP Debian 4.19.118-2+deb10u1 
(2020-06-07) x86_64 GNU/Linux with nfs-kernel-server 1:1.3.4-2.5+deb10u1.

I switched from mounting the drives via fstab to a systemd mount after 14.04 
with the following options: _netdev,sec=krb5p,vers=4.1,auto
I have to use NFS4.1 with vers=4.1, because whenever I omit it, the client will 
still freeze when a file is being copied or cut (Ctrl+C/X).
Do you run into the same issue and has this been fixed for you on 5.4.0-48 as 
well?

Kind regards,
Marc

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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1886277

Title:
  Regression on NFS: unable to handle page fault in mempool_alloc_slab

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Focal:
  Fix Released

Bug description:
  On kernel 5.4.0-40-generic in focal I'm getting errors like this on
  several machines with different hardware in the first hour after boot:

  Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for 
address: 9083e222e632
  Jul 04 16:58:32 hostname kernel: #PF: supervisor read access in kernel mode
  Jul 04 16:58:32 hostname kernel: #PF: error_code(0x) - not-present page
  Jul 04 16:58:32 hostname kernel: PGD 3ac205067 P4D 3ac205067 PUD 0
  Jul 04 16:58:32 hostname kernel: Oops:  [#1] SMP NOPTI
  Jul 04 16:58:32 hostname kernel: CPU: 4 PID: 289 Comm: kworker/u16:4 Tainted: 
G   OE 5.4.0-40-generic #44-Ubuntu
  Jul 04 16:58:32 hostname kernel: Hardware name: LENOVO 20N2CTO1WW/20N2CTO1WW, 
BIOS N2IET88W (1.66 ) 04/22/2020
  Jul 04 16:58:32 hostname kernel: Workqueue: rpciod rpc_async_schedule [sunrpc]
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12: 9083e222e632
  Jul 04 16:58:32 hostname kernel: R13: 00092800 R14: 908367ca6140 
R15: 908367ca6140
  Jul 04 16:58:32 hostname kernel: FS:  () 
GS:90836c30() knlGS:
  Jul 04 16:58:32 hostname kernel: CS:  0010 DS:  ES:  CR0: 
80050033
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632 CR3: 0003ab80a003 
CR4: 003606e0
  Jul 04 16:58:32 hostname kernel: Call Trace:
  Jul 04 16:58:32 hostname kernel:  ? mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc+0x64/0x180
  Jul 04 16:58:32 hostname kernel:  rpc_malloc+0xa1/0xb0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  call_allocate+0xd1/0x1b0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  ? call_refreshresult+0x100/0x100 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  __rpc_execute+0x8c/0x3a0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  rpc_async_schedule+0x30/0x50 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  process_one_work+0x1eb/0x3b0
  Jul 04 16:58:32 hostname kernel:  worker_thread+0x4d/0x400
  Jul 04 16:58:32 hostname kernel:  kthread+0x104/0x140
  Jul 04 16:58:32 hostname kernel:  ? process_one_work+0x3b0/0x3b0
  Jul 04 16:58:32 hostname kernel:  ? kthread_park+0x90/0x90
  Jul 04 16:58:32 hostname kernel:  ret_from_fork+0x35/0x40
  Jul 04 16:58:32 hostname kernel: Modules linked in: rfcomm rpcsec_gss_krb5 
auth_rpcgss nfsv4 nfs lockd grace fscache vboxnetadp(OE) vboxnetflt(OE) 
vboxdrv(OE) msr ccm cmac algif_hash algif_skcipher af_alg aufs bnep overlay 
nls_iso8859_1 mei_hdcp intel_rapl_msr snd_s>
  Jul 04 16:58:32 hostname kernel:  nvram ledtrig_audio mei_me cfg80211 mei 
processor_thermal_device snd_seq ucsi_acpi typec_ucsi intel_rapl_common 
intel_soc_dts_iosf snd_seq_device typec intel_pch_thermal snd_timer snd 
int3403_thermal soundcore int340x_thermal_zone i>
  Jul 04 16:58:32 hostname kernel:  pinctrl_cannonlake video

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-09-21 Thread Launchpad Bug Tracker

This bug was fixed in the package linux - 5.4.0-48.52

---
linux (5.4.0-48.52) focal; urgency=medium

  * focal/linux: 5.4.0-48.52 -proposed tracker (LP: #1894654)

  * mm/slub kernel oops on focal kernel 5.4.0-45 (LP: #1895109)
- SAUCE: Revert "mm/slub: fix a memory leak in sysfs_slab_add()"

  * Packaging resync (LP: #1786013)
- update dkms package versions
- update dkms package versions

  * Introduce the new NVIDIA 450-server and the 450 UDA series (LP: #1887674)
- [packaging] add signed modules for nvidia 450 and 450-server

  * [UBUNTU 20.04] zPCI attach/detach issues with PF/VF linking support
(LP: #1892849)
- s390/pci: fix zpci_bus_link_virtfn()
- s390/pci: re-introduce zpci_remove_device()
- s390/pci: fix PF/VF linking on hot plug

  * [UBUNTU 20.04] kernel: s390/cpum_cf,perf: changeDFLT_CCERROR counter name
(LP: #1891454)
- s390/cpum_cf, perf: change DFLT_CCERROR counter name

  * [UBUNTU 20.04] zPCI: Enabling of a reserved PCI function regression
introduced by multi-function support (LP: #1891437)
- s390/pci: fix enabling a reserved PCI function

  * CVE-2020-12888
- vfio/type1: Support faulting PFNMAP vmas
- vfio-pci: Fault mmaps to enable vma tracking
- vfio-pci: Invalidate mmaps and block MMIO access on disabled memory

  *  [Hyper-V] VSS and File Copy daemons intermittently fails to start
(LP: #1891224)
- [Packaging] Bind hv_vss_daemon startup to hv_vss device
- [Packaging] bind hv_fcopy_daemon startup to hv_fcopy device

  * alsa/hdmi: support nvidia mst hdmi/dp audio (LP: #1867704)
- ALSA: hda - Rename snd_hda_pin_sense to snd_hda_jack_pin_sense
- ALSA: hda - Add DP-MST jack support
- ALSA: hda - Add DP-MST support for non-acomp codecs
- ALSA: hda - Add DP-MST support for NVIDIA codecs
- ALSA: hda: hdmi - fix regression in connect list handling
- ALSA: hda: hdmi - fix kernel oops caused by invalid PCM idx
- ALSA: hda: hdmi - preserve non-MST PCM routing for Intel platforms
- ALSA: hda: hdmi - Keep old slot assignment behavior for Intel platforms
- ALSA: hda - Fix DP-MST support for NVIDIA codecs

  * Focal update: v5.4.60 upstream stable release (LP: #1892899)
- smb3: warn on confusing error scenario with sec=krb5
- genirq/affinity: Make affinity setting if activated opt-in
- genirq/PM: Always unlock IRQ descriptor in rearm_wake_irq()
- PCI: hotplug: ACPI: Fix context refcounting in acpiphp_grab_context()
- PCI: Add device even if driver attach failed
- PCI: qcom: Define some PARF params needed for ipq8064 SoC
- PCI: qcom: Add support for tx term offset for rev 2.1.0
- btrfs: allow use of global block reserve for balance item deletion
- btrfs: free anon block device right after subvolume deletion
- btrfs: don't allocate anonymous block device for user invisible roots
- btrfs: ref-verify: fix memory leak in add_block_entry
- btrfs: stop incremening log_batch for the log root tree when syncing log
- btrfs: remove no longer needed use of log_writers for the log root tree
- btrfs: don't traverse into the seed devices in show_devname
- btrfs: open device without device_list_mutex
- btrfs: move the chunk_mutex in btrfs_read_chunk_tree
- btrfs: relocation: review the call sites which can be interrupted by 
signal
- btrfs: add missing check for nocow and compression inode flags
- btrfs: avoid possible signal interruption of btrfs_drop_snapshot() on
  relocation tree
- btrfs: sysfs: use NOFS for device creation
- btrfs: don't WARN if we abort a transaction with EROFS
- btrfs: fix race between page release and a fast fsync
- btrfs: fix messages after changing compression level by remount
- btrfs: only search for left_info if there is no right_info in
  try_merge_free_space
- btrfs: inode: fix NULL pointer dereference if inode doesn't need 
compression
- btrfs: fix memory leaks after failure to lookup checksums during inode
  logging
- btrfs: make sure SB_I_VERSION doesn't get unset by remount
- btrfs: fix return value mixup in btrfs_get_extent
- arm64: perf: Correct the event index in sysfs
- dt-bindings: iio: io-channel-mux: Fix compatible string in example code
- iio: dac: ad5592r: fix unbalanced mutex unlocks in ad5592r_read_raw()
- xtensa: add missing exclusive access state management
- xtensa: fix xtensa_pmu_setup prototype
- cifs: Fix leak when handling lease break for cached root fid
- powerpc/ptdump: Fix build failure in hashpagetable.c
- powerpc: Allow 4224 bytes of stack expansion for the signal frame
- powerpc: Fix circular dependency between percpu.h and mmu.h
- pinctrl: ingenic: Enhance support for IRQ_TYPE_EDGE_BOTH
- media: vsp1: dl: Fix NULL pointer dereference on unbind
- net: ethernet: stmmac: Disable hardware multicast filter
- net: stmmac: dwmac1000: provide multicast filter fallback

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-09-20 Thread Martin

Hi all,

after installation of 5.4.0-47 I also got the impression that the bug was gone 
and was happy.
Until now ... I'm getting this type of data corruption with the recent main 
focal kernel:

Linux 5.4.0-47-generic #51-Ubuntu SMP Fri Sep 4 19:50:52 UTC 2020
x86_64 x86_64 x86_64 GNU/Linux

(relatively fresh Ubuntu 20.04 installation on ZFS after this bug
hopelessly corrupted the old ext4 installation)

Setup:
  * remote NFS4 + krb5  ( over Wifi)
  * local ZFS
Trigger:
  * rsync'ing a large amount of data from ZFS (local) to NFS4 (remote)


Workqueue: rpciod rpc_async_schedule [sunrpc]
RIP:
   #1: 0010:kmem_cache_free+0x237/0x2b0
   #2: 0010:kmem_cache_alloc+0x7e/0x230


Any idea?

BR, Martin


[198007.326710] [ cut here ]
[198007.326711] virt_to_cache: Object is not a Slab page!
[198007.326721] WARNING: CPU: 2 PID: 1317011 at mm/slab.h:473 
kmem_cache_free+0x237/0x2b0
[198007.326722] Modules linked in: cx23885 altera_ci tda18271 altera_stapl 
m88ds3103 tveeprom cx2341x videobuf2_dvb dvb_core rc_core videobuf2_dma_sg 
videobuf2_memops videobuf2_v4l2 videobuf2_common btrfs xor zstd_compress 
raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c 
rpcsec_gss_krb5 auth_rpcgss nfsv4 nfs lockd grace fscache cmac algif_hash 
algif_skcipher af_alg bnep nls_iso8859_1 si2157 si2168 cx25840 i2c_mux 
snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio snd_hda_codec_hdmi 
videodev snd_hda_intel snd_intel_dspcfg mc snd_hda_codec snd_hda_core snd_hwdep 
mei_hdcp intel_rapl_msr snd_pcm snd_seq_midi snd_seq_midi_event 
intel_rapl_common x86_pkg_temp_thermal intel_powerclamp snd_rawmidi kvm_intel 
btusb btrtl snd_seq kvm btbcm btintel crct10dif_pclmul ghash_clmulni_intel 
aesni_intel crypto_simd eeepc_wmi cryptd glue_helper snd_seq_device snd_timer 
rapl intel_cstate bluetooth snd asus_wmi sparse_keymap ecdh_generic ecc 
wmi_bmof cdc_acm mei_me soundcore mei mac_hid
[198007.326749]  acpi_pad sch_fq_codel nct6775 hwmon_vid coretemp parport_pc 
ppdev lp parport sunrpc ip_tables x_tables autofs4 zfs(POE) zunicode(POE) 
zavl(POE) icp(POE) zcommon(POE) znvpair(POE) spl(OE) zlua(POE) hid_generic 
usbhid hid i915 i2c_algo_bit mxm_wmi crc32_pclmul drm_kms_helper ahci libahci 
syscopyarea r8169 lpc_ich i2c_i801 sysfillrect realtek sysimgblt fb_sys_fops 
drm wmi video [last unloaded: dvb_core]
[198007.326765] CPU: 2 PID: 1317011 Comm: kworker/u8:3 Tainted: P   OE  
   5.4.0-47-generic #51-Ubuntu
[198007.326766] Hardware name: ASUS All Series/H97M-E, BIOS 2702 03/28/2016
[198007.326804] Workqueue: rpciod rpc_async_schedule [sunrpc]
[198007.326809] RIP: 0010:kmem_cache_free+0x237/0x2b0
[198007.326810] Code: ff ff ff 80 3d a6 45 56 01 00 0f 85 39 ff ff ff 48 c7 c6 
60 44 87 a5 48 c7 c7 00 2e b8 a5 c6 05 8b 45 56 01 01 e8 14 7f df ff <0f> 0b e9 
18 ff ff ff 48 8b 57 58 49 8b 4f 58 48 c7 c6 70 44 87 a5
[198007.326811] RSP: 0018:ae38c34e3d20 EFLAGS: 00010282
[198007.326812] RAX:  RBX: 927771c5355f RCX: 
0006
[198007.326812] RDX: 0007 RSI: 0092 RDI: 
9277d79178c0
[198007.326813] RBP: ae38c34e3d48 R08: 0b72 R09: 
0004
[198007.326813] R10:  R11: 0001 R12: 
9277f1c5355f
[198007.326814] R13:  R14: 92774426d080 R15: 
92779ea6acb0
[198007.326815] FS:  () GS:9277d790() 
knlGS:
[198007.326815] CS:  0010 DS:  ES:  CR0: 80050033
[198007.326816] CR2: 7f19cc03b000 CR3: af60a005 CR4: 
001606e0
[198007.326816] Call Trace:
[198007.326823]  mempool_free_slab+0x17/0x20
[198007.326825]  mempool_free+0x2f/0x80
[198007.326846]  rpc_free+0x47/0x60 [sunrpc]
[198007.326856]  xprt_release+0x91/0x1a0 [sunrpc]
[198007.326863]  rpc_release_resources_task+0x13/0x50 [sunrpc]
[198007.326869]  __rpc_execute+0x182/0x3a0 [sunrpc]
[198007.326875]  rpc_async_schedule+0x30/0x50 [sunrpc]
[198007.326877]  process_one_work+0x1eb/0x3b0
[198007.326878]  worker_thread+0x4d/0x400
[198007.326880]  kthread+0x104/0x140
[198007.326881]  ? process_one_work+0x3b0/0x3b0
[198007.326882]  ? kthread_park+0x90/0x90
[198007.326885]  ret_from_fork+0x35/0x40
[198007.326886] ---[ end trace c87e78ba40592766 ]---




[198010.422632] general protection fault:  [#1] SMP PTI
[198010.422637] CPU: 1 PID: 1321230 Comm: kworker/u8:5 Tainted: PW  OE  
   5.4.0-47-generic #51-Ubuntu
[198010.422638] Hardware name: ASUS All Series/H97M-E, BIOS 2702 03/28/2016
[198010.422661] Workqueue: rpciod rpc_async_schedule [sunrpc]
[198010.422666] RIP: 0010:kmem_cache_alloc+0x7e/0x230
[198010.422668] Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 4c 03 05 a0 91 56 
5b 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 4c 01 e0 <48> 8b 18 
48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
[198010.422669] RSP: 0018:ae38e0a83cc8 EFLAGS: 00010206
[198010.422671] RAX: 7113d0192329439a RBX:  RCX:

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-09-03 Thread Launchpad Bug Tracker

This bug was fixed in the package linux - 5.8.0-18.19

---
linux (5.8.0-18.19) groovy; urgency=medium

  * groovy/linux: 5.8.0-18.19 -proposed tracker (LP: #1893047)

  * Packaging resync (LP: #1786013)
- update dkms package versions

  * Groovy update: v5.8.4 upstream stable release (LP: #1893048)
- drm/vgem: Replace opencoded version of drm_gem_dumb_map_offset()
- drm/panel-simple: Fix inverted V/H SYNC for Frida FRD350H54004 panel
- drm/ast: Remove unused code paths for AST 1180
- drm/ast: Initialize DRAM type before posting GPU
- khugepaged: adjust VM_BUG_ON_MM() in __khugepaged_enter()
- ALSA: hda: avoid reset of sdo_limit
- ALSA: hda/realtek: Add quirk for Samsung Galaxy Flex Book
- ALSA: hda/realtek: Add quirk for Samsung Galaxy Book Ion
- can: j1939: transport: j1939_session_tx_dat(): fix use-after-free read in
  j1939_tp_txtimer()
- can: j1939: socket: j1939_sk_bind(): make sure ml_priv is allocated
- spi: Prevent adding devices below an unregistering controller
- io_uring: find and cancel head link async work on files exit
- mm/vunmap: add cond_resched() in vunmap_pmd_range
- romfs: fix uninitialized memory leak in romfs_dev_read()
- kernel/relay.c: fix memleak on destroy relay channel
- uprobes: __replace_page() avoid BUG in munlock_vma_page()
- squashfs: avoid bio_alloc() failure with 1Mbyte blocks
- mm: include CMA pages in lowmem_reserve at boot
- mm, page_alloc: fix core hung in free_pcppages_bulk()
- ASoC: amd: renoir: restore two more registers during resume
- RDMA/hfi1: Correct an interlock issue for TID RDMA WRITE request
- opp: Enable resources again if they were disabled earlier
- opp: Put opp table in dev_pm_opp_set_rate() for empty tables
- opp: Put opp table in dev_pm_opp_set_rate() if _set_opp_bw() fails
- ext4: do not block RWF_NOWAIT dio write on unallocated space
- ext4: fix checking of directory entry validity for inline directories
- jbd2: add the missing unlock_buffer() in the error path of
  jbd2_write_superblock()
- scsi: zfcp: Fix use-after-free in request timeout handlers
- selftests: kvm: Use a shorter encoding to clear RAX
- s390/pci: fix zpci_bus_link_virtfn()
- s390/pci: re-introduce zpci_remove_device()
- s390/pci: fix PF/VF linking on hot plug
- s390/pci: ignore stale configuration request event
- mm/memory.c: skip spurious TLB flush for retried page fault
- drm: amdgpu: Use the correct size when allocating memory
- drm/amdgpu/display: use GFP_ATOMIC in dcn20_validate_bandwidth_internal
- drm/amd/display: Fix incorrect backlight register offset for DCN
- drm/amd/display: Fix EDID parsing after resume from suspend
- drm/amd/display: Blank stream before destroying HDCP session
- drm/amd/display: Fix DFPstate hang due to view port changed
- drm/amd/display: fix pow() crashing when given base 0
- drm/i915/pmu: Prefer drm_WARN_ON over WARN_ON
- drm/i915: Provide the perf pmu.module
- scsi: ufs: Add DELAY_BEFORE_LPM quirk for Micron devices
- scsi: target: tcmu: Fix crash in tcmu_flush_dcache_range on ARM
- media: budget-core: Improve exception handling in budget_register()
- media: coda: jpeg: add NULL check after kmalloc
- f2fs: fix to check page dirty status before writeback
- rtc: goldfish: Enable interrupt in set_alarm() when necessary
- media: vpss: clean up resources in init
- f2fs: should avoid inode eviction in synchronous path
- Input: psmouse - add a newline when printing 'proto' by sysfs
- MIPS: Fix unable to reserve memory for Crash kernel
- m68knommu: fix overwriting of bits in ColdFire V3 cache control
- svcrdma: Fix another Receive buffer leak
- xfs: fix inode quota reservation checks
- drm/ttm: fix offset in VMAs with a pg_offs in ttm_bo_vm_access
- riscv: Fixup static_obj() fail
- jffs2: fix UAF problem
- ceph: fix use-after-free for fsc->mdsc
- swiotlb-xen: use vmalloc_to_page on vmalloc virt addresses
- cpufreq: intel_pstate: Fix cpuinfo_max_freq when MSR_TURBO_RATIO_LIMIT is 0
- scsi: libfc: Free skb in fc_disc_gpn_id_resp() for valid cases
- virtio_ring: Avoid loop when vq is broken in virtqueue_poll
- media: camss: fix memory leaks on error handling paths in probe
- tools/testing/selftests/cgroup/cgroup_util.c: cg_read_strcmp: fix null
  pointer dereference
- xfs: Fix UBSAN null-ptr-deref in xfs_sysfs_init
- alpha: fix annotation of io{read,write}{16,32}be()
- fat: fix fat_ra_init() for data clusters == 0
- fs/signalfd.c: fix inconsistent return codes for signalfd4
- ext4: fix potential negative array index in do_split()
- drm/virtio: fix missing dma_fence_put() in virtio_gpu_execbuffer_ioctl()
- ext4: don't allow overlapping system zones
- ext4: check journal inode extents more carefully
- netfilter: nf_tables: nft_exthdr:

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-09-01 Thread Marian Rainer-Harbach

I tested kernel 5.4.0-46-generic #50 from focal-proposed. This version
seems to fix the problem, I could not reproduce it any more.


** Tags removed: verification-needed-focal
** Tags added: verification-done-focal

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https://bugs.launchpad.net/bugs/1886277

Title:
  Regression on NFS: unable to handle page fault in mempool_alloc_slab

Status in linux package in Ubuntu:
  Confirmed
Status in linux source package in Focal:
  Fix Committed

Bug description:
  On kernel 5.4.0-40-generic in focal I'm getting errors like this on
  several machines with different hardware in the first hour after boot:

  Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for 
address: 9083e222e632
  Jul 04 16:58:32 hostname kernel: #PF: supervisor read access in kernel mode
  Jul 04 16:58:32 hostname kernel: #PF: error_code(0x) - not-present page
  Jul 04 16:58:32 hostname kernel: PGD 3ac205067 P4D 3ac205067 PUD 0
  Jul 04 16:58:32 hostname kernel: Oops:  [#1] SMP NOPTI
  Jul 04 16:58:32 hostname kernel: CPU: 4 PID: 289 Comm: kworker/u16:4 Tainted: 
G   OE 5.4.0-40-generic #44-Ubuntu
  Jul 04 16:58:32 hostname kernel: Hardware name: LENOVO 20N2CTO1WW/20N2CTO1WW, 
BIOS N2IET88W (1.66 ) 04/22/2020
  Jul 04 16:58:32 hostname kernel: Workqueue: rpciod rpc_async_schedule [sunrpc]
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12: 9083e222e632
  Jul 04 16:58:32 hostname kernel: R13: 00092800 R14: 908367ca6140 
R15: 908367ca6140
  Jul 04 16:58:32 hostname kernel: FS:  () 
GS:90836c30() knlGS:
  Jul 04 16:58:32 hostname kernel: CS:  0010 DS:  ES:  CR0: 
80050033
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632 CR3: 0003ab80a003 
CR4: 003606e0
  Jul 04 16:58:32 hostname kernel: Call Trace:
  Jul 04 16:58:32 hostname kernel:  ? mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc+0x64/0x180
  Jul 04 16:58:32 hostname kernel:  rpc_malloc+0xa1/0xb0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  call_allocate+0xd1/0x1b0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  ? call_refreshresult+0x100/0x100 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  __rpc_execute+0x8c/0x3a0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  rpc_async_schedule+0x30/0x50 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  process_one_work+0x1eb/0x3b0
  Jul 04 16:58:32 hostname kernel:  worker_thread+0x4d/0x400
  Jul 04 16:58:32 hostname kernel:  kthread+0x104/0x140
  Jul 04 16:58:32 hostname kernel:  ? process_one_work+0x3b0/0x3b0
  Jul 04 16:58:32 hostname kernel:  ? kthread_park+0x90/0x90
  Jul 04 16:58:32 hostname kernel:  ret_from_fork+0x35/0x40
  Jul 04 16:58:32 hostname kernel: Modules linked in: rfcomm rpcsec_gss_krb5 
auth_rpcgss nfsv4 nfs lockd grace fscache vboxnetadp(OE) vboxnetflt(OE) 
vboxdrv(OE) msr ccm cmac algif_hash algif_skcipher af_alg aufs bnep overlay 
nls_iso8859_1 mei_hdcp intel_rapl_msr snd_s>
  Jul 04 16:58:32 hostname kernel:  nvram ledtrig_audio mei_me cfg80211 mei 
processor_thermal_device snd_seq ucsi_acpi typec_ucsi intel_rapl_common 
intel_soc_dts_iosf snd_seq_device typec intel_pch_thermal snd_timer snd 
int3403_thermal soundcore int340x_thermal_zone i>
  Jul 04 16:58:32 hostname kernel:  pinctrl_cannonlake video pinctrl_intel
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632
  Jul 04 16:58:32 hostname kernel: ---[ end trace cbbaed921eb439ce ]---
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP:

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-08-31 Thread Ubuntu Kernel Bot

This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
focal' to 'verification-done-focal'. If the problem still exists, change
the tag 'verification-needed-focal' to 'verification-failed-focal'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: verification-needed-focal

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https://bugs.launchpad.net/bugs/1886277

Title:
  Regression on NFS: unable to handle page fault in mempool_alloc_slab

Status in linux package in Ubuntu:
  Confirmed
Status in linux source package in Focal:
  Fix Committed

Bug description:
  On kernel 5.4.0-40-generic in focal I'm getting errors like this on
  several machines with different hardware in the first hour after boot:

  Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for 
address: 9083e222e632
  Jul 04 16:58:32 hostname kernel: #PF: supervisor read access in kernel mode
  Jul 04 16:58:32 hostname kernel: #PF: error_code(0x) - not-present page
  Jul 04 16:58:32 hostname kernel: PGD 3ac205067 P4D 3ac205067 PUD 0
  Jul 04 16:58:32 hostname kernel: Oops:  [#1] SMP NOPTI
  Jul 04 16:58:32 hostname kernel: CPU: 4 PID: 289 Comm: kworker/u16:4 Tainted: 
G   OE 5.4.0-40-generic #44-Ubuntu
  Jul 04 16:58:32 hostname kernel: Hardware name: LENOVO 20N2CTO1WW/20N2CTO1WW, 
BIOS N2IET88W (1.66 ) 04/22/2020
  Jul 04 16:58:32 hostname kernel: Workqueue: rpciod rpc_async_schedule [sunrpc]
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12: 9083e222e632
  Jul 04 16:58:32 hostname kernel: R13: 00092800 R14: 908367ca6140 
R15: 908367ca6140
  Jul 04 16:58:32 hostname kernel: FS:  () 
GS:90836c30() knlGS:
  Jul 04 16:58:32 hostname kernel: CS:  0010 DS:  ES:  CR0: 
80050033
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632 CR3: 0003ab80a003 
CR4: 003606e0
  Jul 04 16:58:32 hostname kernel: Call Trace:
  Jul 04 16:58:32 hostname kernel:  ? mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc+0x64/0x180
  Jul 04 16:58:32 hostname kernel:  rpc_malloc+0xa1/0xb0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  call_allocate+0xd1/0x1b0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  ? call_refreshresult+0x100/0x100 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  __rpc_execute+0x8c/0x3a0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  rpc_async_schedule+0x30/0x50 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  process_one_work+0x1eb/0x3b0
  Jul 04 16:58:32 hostname kernel:  worker_thread+0x4d/0x400
  Jul 04 16:58:32 hostname kernel:  kthread+0x104/0x140
  Jul 04 16:58:32 hostname kernel:  ? process_one_work+0x3b0/0x3b0
  Jul 04 16:58:32 hostname kernel:  ? kthread_park+0x90/0x90
  Jul 04 16:58:32 hostname kernel:  ret_from_fork+0x35/0x40
  Jul 04 16:58:32 hostname kernel: Modules linked in: rfcomm rpcsec_gss_krb5 
auth_rpcgss nfsv4 nfs lockd grace fscache vboxnetadp(OE) vboxnetflt(OE) 
vboxdrv(OE) msr ccm cmac algif_hash algif_skcipher af_alg aufs bnep overlay 
nls_iso8859_1 mei_hdcp intel_rapl_msr snd_s>
  Jul 04 16:58:32 hostname kernel:  nvram ledtrig_audio mei_me cfg80211 mei 
processor_thermal_device snd_seq ucsi_acpi typec_ucsi intel_rapl_common 
intel_soc_dts_iosf snd_seq_device typec intel_pch_thermal snd_timer snd 
int3403_thermal soundcore int340x_thermal_zone i>
  Jul 04 16:58:32 hostname kernel:  pinctrl_cannonlake video pinctrl_intel
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632
  Jul 04 16:58:32 hostname kernel: ---[ end trace cbbaed921eb439ce ]---
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-08-28 Thread Kleber Sacilotto de Souza

A fix mentioning this bug report has been applied upstream and to
mainline stable linux-5.4.y and backported to focal/linux as part of our
regular stable backports (bug 1892417):

SUNRPC: Fix ("SUNRPC: Add "@len" parameter to gss_unwrap()")
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal/commit/?h=master-next=0ed4abf7a4dceb99ed2dd2a3d593bb17409c8df9

This patch is committed for the next kernel SRU.

** Also affects: linux (Ubuntu Focal)
   Importance: Undecided
   Status: New

** Changed in: linux (Ubuntu Focal)
   Status: New => Fix Committed

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https://bugs.launchpad.net/bugs/1886277

Title:
  Regression on NFS: unable to handle page fault in mempool_alloc_slab

Status in linux package in Ubuntu:
  Confirmed
Status in linux source package in Focal:
  Fix Committed

Bug description:
  On kernel 5.4.0-40-generic in focal I'm getting errors like this on
  several machines with different hardware in the first hour after boot:

  Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for 
address: 9083e222e632
  Jul 04 16:58:32 hostname kernel: #PF: supervisor read access in kernel mode
  Jul 04 16:58:32 hostname kernel: #PF: error_code(0x) - not-present page
  Jul 04 16:58:32 hostname kernel: PGD 3ac205067 P4D 3ac205067 PUD 0
  Jul 04 16:58:32 hostname kernel: Oops:  [#1] SMP NOPTI
  Jul 04 16:58:32 hostname kernel: CPU: 4 PID: 289 Comm: kworker/u16:4 Tainted: 
G   OE 5.4.0-40-generic #44-Ubuntu
  Jul 04 16:58:32 hostname kernel: Hardware name: LENOVO 20N2CTO1WW/20N2CTO1WW, 
BIOS N2IET88W (1.66 ) 04/22/2020
  Jul 04 16:58:32 hostname kernel: Workqueue: rpciod rpc_async_schedule [sunrpc]
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12: 9083e222e632
  Jul 04 16:58:32 hostname kernel: R13: 00092800 R14: 908367ca6140 
R15: 908367ca6140
  Jul 04 16:58:32 hostname kernel: FS:  () 
GS:90836c30() knlGS:
  Jul 04 16:58:32 hostname kernel: CS:  0010 DS:  ES:  CR0: 
80050033
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632 CR3: 0003ab80a003 
CR4: 003606e0
  Jul 04 16:58:32 hostname kernel: Call Trace:
  Jul 04 16:58:32 hostname kernel:  ? mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc+0x64/0x180
  Jul 04 16:58:32 hostname kernel:  rpc_malloc+0xa1/0xb0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  call_allocate+0xd1/0x1b0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  ? call_refreshresult+0x100/0x100 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  __rpc_execute+0x8c/0x3a0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  rpc_async_schedule+0x30/0x50 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  process_one_work+0x1eb/0x3b0
  Jul 04 16:58:32 hostname kernel:  worker_thread+0x4d/0x400
  Jul 04 16:58:32 hostname kernel:  kthread+0x104/0x140
  Jul 04 16:58:32 hostname kernel:  ? process_one_work+0x3b0/0x3b0
  Jul 04 16:58:32 hostname kernel:  ? kthread_park+0x90/0x90
  Jul 04 16:58:32 hostname kernel:  ret_from_fork+0x35/0x40
  Jul 04 16:58:32 hostname kernel: Modules linked in: rfcomm rpcsec_gss_krb5 
auth_rpcgss nfsv4 nfs lockd grace fscache vboxnetadp(OE) vboxnetflt(OE) 
vboxdrv(OE) msr ccm cmac algif_hash algif_skcipher af_alg aufs bnep overlay 
nls_iso8859_1 mei_hdcp intel_rapl_msr snd_s>
  Jul 04 16:58:32 hostname kernel:  nvram ledtrig_audio mei_me cfg80211 mei 
processor_thermal_device snd_seq ucsi_acpi typec_ucsi intel_rapl_common 
intel_soc_dts_iosf snd_seq_device typec intel_pch_thermal snd_timer snd 
int3403_thermal soundcore int340x_thermal_zone i>
  Jul 04 16:58:32 hostname kernel:  pinctrl_cannonlake video pinctrl_intel
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632
  Jul 04 16:58:32 hostname kernel: ---[ end trace cbbaed921eb439ce ]---
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-08-23 Thread Marc Kolly

That is great to hear @marianrh!

I switched the entire workforce to the 5.8 kernel after the bug was
introduced on those machines that are still on 18.04 and have HWE
installed. Now I installed two machines for testing purposes with Ubuntu
20.04 and the problem reappeared quite quickly, so I put them on the 5.8
kernel as well.

I will try 5.4.60-050460-generic #202008210836 now and see if it works
as well.

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https://bugs.launchpad.net/bugs/1886277

Title:
  Regression on NFS: unable to handle page fault in mempool_alloc_slab

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  On kernel 5.4.0-40-generic in focal I'm getting errors like this on
  several machines with different hardware in the first hour after boot:

  Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for 
address: 9083e222e632
  Jul 04 16:58:32 hostname kernel: #PF: supervisor read access in kernel mode
  Jul 04 16:58:32 hostname kernel: #PF: error_code(0x) - not-present page
  Jul 04 16:58:32 hostname kernel: PGD 3ac205067 P4D 3ac205067 PUD 0
  Jul 04 16:58:32 hostname kernel: Oops:  [#1] SMP NOPTI
  Jul 04 16:58:32 hostname kernel: CPU: 4 PID: 289 Comm: kworker/u16:4 Tainted: 
G   OE 5.4.0-40-generic #44-Ubuntu
  Jul 04 16:58:32 hostname kernel: Hardware name: LENOVO 20N2CTO1WW/20N2CTO1WW, 
BIOS N2IET88W (1.66 ) 04/22/2020
  Jul 04 16:58:32 hostname kernel: Workqueue: rpciod rpc_async_schedule [sunrpc]
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12: 9083e222e632
  Jul 04 16:58:32 hostname kernel: R13: 00092800 R14: 908367ca6140 
R15: 908367ca6140
  Jul 04 16:58:32 hostname kernel: FS:  () 
GS:90836c30() knlGS:
  Jul 04 16:58:32 hostname kernel: CS:  0010 DS:  ES:  CR0: 
80050033
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632 CR3: 0003ab80a003 
CR4: 003606e0
  Jul 04 16:58:32 hostname kernel: Call Trace:
  Jul 04 16:58:32 hostname kernel:  ? mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc+0x64/0x180
  Jul 04 16:58:32 hostname kernel:  rpc_malloc+0xa1/0xb0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  call_allocate+0xd1/0x1b0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  ? call_refreshresult+0x100/0x100 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  __rpc_execute+0x8c/0x3a0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  rpc_async_schedule+0x30/0x50 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  process_one_work+0x1eb/0x3b0
  Jul 04 16:58:32 hostname kernel:  worker_thread+0x4d/0x400
  Jul 04 16:58:32 hostname kernel:  kthread+0x104/0x140
  Jul 04 16:58:32 hostname kernel:  ? process_one_work+0x3b0/0x3b0
  Jul 04 16:58:32 hostname kernel:  ? kthread_park+0x90/0x90
  Jul 04 16:58:32 hostname kernel:  ret_from_fork+0x35/0x40
  Jul 04 16:58:32 hostname kernel: Modules linked in: rfcomm rpcsec_gss_krb5 
auth_rpcgss nfsv4 nfs lockd grace fscache vboxnetadp(OE) vboxnetflt(OE) 
vboxdrv(OE) msr ccm cmac algif_hash algif_skcipher af_alg aufs bnep overlay 
nls_iso8859_1 mei_hdcp intel_rapl_msr snd_s>
  Jul 04 16:58:32 hostname kernel:  nvram ledtrig_audio mei_me cfg80211 mei 
processor_thermal_device snd_seq ucsi_acpi typec_ucsi intel_rapl_common 
intel_soc_dts_iosf snd_seq_device typec intel_pch_thermal snd_timer snd 
int3403_thermal soundcore int340x_thermal_zone i>
  Jul 04 16:58:32 hostname kernel:  pinctrl_cannonlake video pinctrl_intel
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632
  Jul 04 16:58:32 hostname kernel: ---[ end trace cbbaed921eb439ce ]---
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-08-23 Thread Marian Rainer-Harbach

I can confirm that 5.4.59-050459-generic #202008190333 seems to work, I
could not reproduce the problem there.

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https://bugs.launchpad.net/bugs/1886277

Title:
  Regression on NFS: unable to handle page fault in mempool_alloc_slab

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  On kernel 5.4.0-40-generic in focal I'm getting errors like this on
  several machines with different hardware in the first hour after boot:

  Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for 
address: 9083e222e632
  Jul 04 16:58:32 hostname kernel: #PF: supervisor read access in kernel mode
  Jul 04 16:58:32 hostname kernel: #PF: error_code(0x) - not-present page
  Jul 04 16:58:32 hostname kernel: PGD 3ac205067 P4D 3ac205067 PUD 0
  Jul 04 16:58:32 hostname kernel: Oops:  [#1] SMP NOPTI
  Jul 04 16:58:32 hostname kernel: CPU: 4 PID: 289 Comm: kworker/u16:4 Tainted: 
G   OE 5.4.0-40-generic #44-Ubuntu
  Jul 04 16:58:32 hostname kernel: Hardware name: LENOVO 20N2CTO1WW/20N2CTO1WW, 
BIOS N2IET88W (1.66 ) 04/22/2020
  Jul 04 16:58:32 hostname kernel: Workqueue: rpciod rpc_async_schedule [sunrpc]
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12: 9083e222e632
  Jul 04 16:58:32 hostname kernel: R13: 00092800 R14: 908367ca6140 
R15: 908367ca6140
  Jul 04 16:58:32 hostname kernel: FS:  () 
GS:90836c30() knlGS:
  Jul 04 16:58:32 hostname kernel: CS:  0010 DS:  ES:  CR0: 
80050033
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632 CR3: 0003ab80a003 
CR4: 003606e0
  Jul 04 16:58:32 hostname kernel: Call Trace:
  Jul 04 16:58:32 hostname kernel:  ? mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc+0x64/0x180
  Jul 04 16:58:32 hostname kernel:  rpc_malloc+0xa1/0xb0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  call_allocate+0xd1/0x1b0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  ? call_refreshresult+0x100/0x100 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  __rpc_execute+0x8c/0x3a0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  rpc_async_schedule+0x30/0x50 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  process_one_work+0x1eb/0x3b0
  Jul 04 16:58:32 hostname kernel:  worker_thread+0x4d/0x400
  Jul 04 16:58:32 hostname kernel:  kthread+0x104/0x140
  Jul 04 16:58:32 hostname kernel:  ? process_one_work+0x3b0/0x3b0
  Jul 04 16:58:32 hostname kernel:  ? kthread_park+0x90/0x90
  Jul 04 16:58:32 hostname kernel:  ret_from_fork+0x35/0x40
  Jul 04 16:58:32 hostname kernel: Modules linked in: rfcomm rpcsec_gss_krb5 
auth_rpcgss nfsv4 nfs lockd grace fscache vboxnetadp(OE) vboxnetflt(OE) 
vboxdrv(OE) msr ccm cmac algif_hash algif_skcipher af_alg aufs bnep overlay 
nls_iso8859_1 mei_hdcp intel_rapl_msr snd_s>
  Jul 04 16:58:32 hostname kernel:  nvram ledtrig_audio mei_me cfg80211 mei 
processor_thermal_device snd_seq ucsi_acpi typec_ucsi intel_rapl_common 
intel_soc_dts_iosf snd_seq_device typec intel_pch_thermal snd_timer snd 
int3403_thermal soundcore int340x_thermal_zone i>
  Jul 04 16:58:32 hostname kernel:  pinctrl_cannonlake video pinctrl_intel
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632
  Jul 04 16:58:32 hostname kernel: ---[ end trace cbbaed921eb439ce ]---
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12: 9083e222e632
  Jul 04

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-08-20 Thread Pierre Sauter

Yesterdays new mainline Kernel v5.4.59 works for me.

https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.4.59/

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.4.59=18d1bb4973644bb14d1363af07665f28d468c5ec

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https://bugs.launchpad.net/bugs/1886277

Title:
  Regression on NFS: unable to handle page fault in mempool_alloc_slab

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  On kernel 5.4.0-40-generic in focal I'm getting errors like this on
  several machines with different hardware in the first hour after boot:

  Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for 
address: 9083e222e632
  Jul 04 16:58:32 hostname kernel: #PF: supervisor read access in kernel mode
  Jul 04 16:58:32 hostname kernel: #PF: error_code(0x) - not-present page
  Jul 04 16:58:32 hostname kernel: PGD 3ac205067 P4D 3ac205067 PUD 0
  Jul 04 16:58:32 hostname kernel: Oops:  [#1] SMP NOPTI
  Jul 04 16:58:32 hostname kernel: CPU: 4 PID: 289 Comm: kworker/u16:4 Tainted: 
G   OE 5.4.0-40-generic #44-Ubuntu
  Jul 04 16:58:32 hostname kernel: Hardware name: LENOVO 20N2CTO1WW/20N2CTO1WW, 
BIOS N2IET88W (1.66 ) 04/22/2020
  Jul 04 16:58:32 hostname kernel: Workqueue: rpciod rpc_async_schedule [sunrpc]
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12: 9083e222e632
  Jul 04 16:58:32 hostname kernel: R13: 00092800 R14: 908367ca6140 
R15: 908367ca6140
  Jul 04 16:58:32 hostname kernel: FS:  () 
GS:90836c30() knlGS:
  Jul 04 16:58:32 hostname kernel: CS:  0010 DS:  ES:  CR0: 
80050033
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632 CR3: 0003ab80a003 
CR4: 003606e0
  Jul 04 16:58:32 hostname kernel: Call Trace:
  Jul 04 16:58:32 hostname kernel:  ? mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc+0x64/0x180
  Jul 04 16:58:32 hostname kernel:  rpc_malloc+0xa1/0xb0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  call_allocate+0xd1/0x1b0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  ? call_refreshresult+0x100/0x100 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  __rpc_execute+0x8c/0x3a0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  rpc_async_schedule+0x30/0x50 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  process_one_work+0x1eb/0x3b0
  Jul 04 16:58:32 hostname kernel:  worker_thread+0x4d/0x400
  Jul 04 16:58:32 hostname kernel:  kthread+0x104/0x140
  Jul 04 16:58:32 hostname kernel:  ? process_one_work+0x3b0/0x3b0
  Jul 04 16:58:32 hostname kernel:  ? kthread_park+0x90/0x90
  Jul 04 16:58:32 hostname kernel:  ret_from_fork+0x35/0x40
  Jul 04 16:58:32 hostname kernel: Modules linked in: rfcomm rpcsec_gss_krb5 
auth_rpcgss nfsv4 nfs lockd grace fscache vboxnetadp(OE) vboxnetflt(OE) 
vboxdrv(OE) msr ccm cmac algif_hash algif_skcipher af_alg aufs bnep overlay 
nls_iso8859_1 mei_hdcp intel_rapl_msr snd_s>
  Jul 04 16:58:32 hostname kernel:  nvram ledtrig_audio mei_me cfg80211 mei 
processor_thermal_device snd_seq ucsi_acpi typec_ucsi intel_rapl_common 
intel_soc_dts_iosf snd_seq_device typec intel_pch_thermal snd_timer snd 
int3403_thermal soundcore int340x_thermal_zone i>
  Jul 04 16:58:32 hostname kernel:  pinctrl_cannonlake video pinctrl_intel
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632
  Jul 04 16:58:32 hostname kernel: ---[ end trace cbbaed921eb439ce ]---
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09:

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-07-24 Thread Andrew Conway

For what it is worth, I also have the same enncryption aes256-cts-hmac-
sha1-96 (and same problem).  The tickets come from MIT Kerberos on
Ubuntu 18.04; the NFS servers are Ubuntu 18.04 using krb5p security
option.

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https://bugs.launchpad.net/bugs/1886277

Title:
  Regression on NFS: unable to handle page fault in mempool_alloc_slab

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  On kernel 5.4.0-40-generic in focal I'm getting errors like this on
  several machines with different hardware in the first hour after boot:

  Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for 
address: 9083e222e632
  Jul 04 16:58:32 hostname kernel: #PF: supervisor read access in kernel mode
  Jul 04 16:58:32 hostname kernel: #PF: error_code(0x) - not-present page
  Jul 04 16:58:32 hostname kernel: PGD 3ac205067 P4D 3ac205067 PUD 0
  Jul 04 16:58:32 hostname kernel: Oops:  [#1] SMP NOPTI
  Jul 04 16:58:32 hostname kernel: CPU: 4 PID: 289 Comm: kworker/u16:4 Tainted: 
G   OE 5.4.0-40-generic #44-Ubuntu
  Jul 04 16:58:32 hostname kernel: Hardware name: LENOVO 20N2CTO1WW/20N2CTO1WW, 
BIOS N2IET88W (1.66 ) 04/22/2020
  Jul 04 16:58:32 hostname kernel: Workqueue: rpciod rpc_async_schedule [sunrpc]
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12: 9083e222e632
  Jul 04 16:58:32 hostname kernel: R13: 00092800 R14: 908367ca6140 
R15: 908367ca6140
  Jul 04 16:58:32 hostname kernel: FS:  () 
GS:90836c30() knlGS:
  Jul 04 16:58:32 hostname kernel: CS:  0010 DS:  ES:  CR0: 
80050033
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632 CR3: 0003ab80a003 
CR4: 003606e0
  Jul 04 16:58:32 hostname kernel: Call Trace:
  Jul 04 16:58:32 hostname kernel:  ? mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc+0x64/0x180
  Jul 04 16:58:32 hostname kernel:  rpc_malloc+0xa1/0xb0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  call_allocate+0xd1/0x1b0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  ? call_refreshresult+0x100/0x100 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  __rpc_execute+0x8c/0x3a0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  rpc_async_schedule+0x30/0x50 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  process_one_work+0x1eb/0x3b0
  Jul 04 16:58:32 hostname kernel:  worker_thread+0x4d/0x400
  Jul 04 16:58:32 hostname kernel:  kthread+0x104/0x140
  Jul 04 16:58:32 hostname kernel:  ? process_one_work+0x3b0/0x3b0
  Jul 04 16:58:32 hostname kernel:  ? kthread_park+0x90/0x90
  Jul 04 16:58:32 hostname kernel:  ret_from_fork+0x35/0x40
  Jul 04 16:58:32 hostname kernel: Modules linked in: rfcomm rpcsec_gss_krb5 
auth_rpcgss nfsv4 nfs lockd grace fscache vboxnetadp(OE) vboxnetflt(OE) 
vboxdrv(OE) msr ccm cmac algif_hash algif_skcipher af_alg aufs bnep overlay 
nls_iso8859_1 mei_hdcp intel_rapl_msr snd_s>
  Jul 04 16:58:32 hostname kernel:  nvram ledtrig_audio mei_me cfg80211 mei 
processor_thermal_device snd_seq ucsi_acpi typec_ucsi intel_rapl_common 
intel_soc_dts_iosf snd_seq_device typec intel_pch_thermal snd_timer snd 
int3403_thermal soundcore int340x_thermal_zone i>
  Jul 04 16:58:32 hostname kernel:  pinctrl_cannonlake video pinctrl_intel
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632
  Jul 04 16:58:32 hostname kernel: ---[ end trace cbbaed921eb439ce ]---
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-07-24 Thread Jani Jaakkola

The enctypes according to klist are: Etype (skey, tkt): aes256-cts-hmac-
sha1-96, aes256-cts-hmac-sha1-96. The kerberos tickets come from Active
Directory server and NFS servers are NetApps, if that matters.

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https://bugs.launchpad.net/bugs/1886277

Title:
  Regression on NFS: unable to handle page fault in mempool_alloc_slab

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  On kernel 5.4.0-40-generic in focal I'm getting errors like this on
  several machines with different hardware in the first hour after boot:

  Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for 
address: 9083e222e632
  Jul 04 16:58:32 hostname kernel: #PF: supervisor read access in kernel mode
  Jul 04 16:58:32 hostname kernel: #PF: error_code(0x) - not-present page
  Jul 04 16:58:32 hostname kernel: PGD 3ac205067 P4D 3ac205067 PUD 0
  Jul 04 16:58:32 hostname kernel: Oops:  [#1] SMP NOPTI
  Jul 04 16:58:32 hostname kernel: CPU: 4 PID: 289 Comm: kworker/u16:4 Tainted: 
G   OE 5.4.0-40-generic #44-Ubuntu
  Jul 04 16:58:32 hostname kernel: Hardware name: LENOVO 20N2CTO1WW/20N2CTO1WW, 
BIOS N2IET88W (1.66 ) 04/22/2020
  Jul 04 16:58:32 hostname kernel: Workqueue: rpciod rpc_async_schedule [sunrpc]
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12: 9083e222e632
  Jul 04 16:58:32 hostname kernel: R13: 00092800 R14: 908367ca6140 
R15: 908367ca6140
  Jul 04 16:58:32 hostname kernel: FS:  () 
GS:90836c30() knlGS:
  Jul 04 16:58:32 hostname kernel: CS:  0010 DS:  ES:  CR0: 
80050033
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632 CR3: 0003ab80a003 
CR4: 003606e0
  Jul 04 16:58:32 hostname kernel: Call Trace:
  Jul 04 16:58:32 hostname kernel:  ? mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc+0x64/0x180
  Jul 04 16:58:32 hostname kernel:  rpc_malloc+0xa1/0xb0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  call_allocate+0xd1/0x1b0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  ? call_refreshresult+0x100/0x100 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  __rpc_execute+0x8c/0x3a0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  rpc_async_schedule+0x30/0x50 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  process_one_work+0x1eb/0x3b0
  Jul 04 16:58:32 hostname kernel:  worker_thread+0x4d/0x400
  Jul 04 16:58:32 hostname kernel:  kthread+0x104/0x140
  Jul 04 16:58:32 hostname kernel:  ? process_one_work+0x3b0/0x3b0
  Jul 04 16:58:32 hostname kernel:  ? kthread_park+0x90/0x90
  Jul 04 16:58:32 hostname kernel:  ret_from_fork+0x35/0x40
  Jul 04 16:58:32 hostname kernel: Modules linked in: rfcomm rpcsec_gss_krb5 
auth_rpcgss nfsv4 nfs lockd grace fscache vboxnetadp(OE) vboxnetflt(OE) 
vboxdrv(OE) msr ccm cmac algif_hash algif_skcipher af_alg aufs bnep overlay 
nls_iso8859_1 mei_hdcp intel_rapl_msr snd_s>
  Jul 04 16:58:32 hostname kernel:  nvram ledtrig_audio mei_me cfg80211 mei 
processor_thermal_device snd_seq ucsi_acpi typec_ucsi intel_rapl_common 
intel_soc_dts_iosf snd_seq_device typec intel_pch_thermal snd_timer snd 
int3403_thermal soundcore int340x_thermal_zone i>
  Jul 04 16:58:32 hostname kernel:  pinctrl_cannonlake video pinctrl_intel
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632
  Jul 04 16:58:32 hostname kernel: ---[ end trace cbbaed921eb439ce ]---
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-07-24 Thread Jani Jaakkola

This also affects Ubuntu Bionic, if linux-generic-hwe-18.04 is
installed. The 4.15.0-112-generic works fine.

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https://bugs.launchpad.net/bugs/1886277

Title:
  Regression on NFS: unable to handle page fault in mempool_alloc_slab

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  On kernel 5.4.0-40-generic in focal I'm getting errors like this on
  several machines with different hardware in the first hour after boot:

  Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for 
address: 9083e222e632
  Jul 04 16:58:32 hostname kernel: #PF: supervisor read access in kernel mode
  Jul 04 16:58:32 hostname kernel: #PF: error_code(0x) - not-present page
  Jul 04 16:58:32 hostname kernel: PGD 3ac205067 P4D 3ac205067 PUD 0
  Jul 04 16:58:32 hostname kernel: Oops:  [#1] SMP NOPTI
  Jul 04 16:58:32 hostname kernel: CPU: 4 PID: 289 Comm: kworker/u16:4 Tainted: 
G   OE 5.4.0-40-generic #44-Ubuntu
  Jul 04 16:58:32 hostname kernel: Hardware name: LENOVO 20N2CTO1WW/20N2CTO1WW, 
BIOS N2IET88W (1.66 ) 04/22/2020
  Jul 04 16:58:32 hostname kernel: Workqueue: rpciod rpc_async_schedule [sunrpc]
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12: 9083e222e632
  Jul 04 16:58:32 hostname kernel: R13: 00092800 R14: 908367ca6140 
R15: 908367ca6140
  Jul 04 16:58:32 hostname kernel: FS:  () 
GS:90836c30() knlGS:
  Jul 04 16:58:32 hostname kernel: CS:  0010 DS:  ES:  CR0: 
80050033
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632 CR3: 0003ab80a003 
CR4: 003606e0
  Jul 04 16:58:32 hostname kernel: Call Trace:
  Jul 04 16:58:32 hostname kernel:  ? mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc+0x64/0x180
  Jul 04 16:58:32 hostname kernel:  rpc_malloc+0xa1/0xb0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  call_allocate+0xd1/0x1b0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  ? call_refreshresult+0x100/0x100 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  __rpc_execute+0x8c/0x3a0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  rpc_async_schedule+0x30/0x50 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  process_one_work+0x1eb/0x3b0
  Jul 04 16:58:32 hostname kernel:  worker_thread+0x4d/0x400
  Jul 04 16:58:32 hostname kernel:  kthread+0x104/0x140
  Jul 04 16:58:32 hostname kernel:  ? process_one_work+0x3b0/0x3b0
  Jul 04 16:58:32 hostname kernel:  ? kthread_park+0x90/0x90
  Jul 04 16:58:32 hostname kernel:  ret_from_fork+0x35/0x40
  Jul 04 16:58:32 hostname kernel: Modules linked in: rfcomm rpcsec_gss_krb5 
auth_rpcgss nfsv4 nfs lockd grace fscache vboxnetadp(OE) vboxnetflt(OE) 
vboxdrv(OE) msr ccm cmac algif_hash algif_skcipher af_alg aufs bnep overlay 
nls_iso8859_1 mei_hdcp intel_rapl_msr snd_s>
  Jul 04 16:58:32 hostname kernel:  nvram ledtrig_audio mei_me cfg80211 mei 
processor_thermal_device snd_seq ucsi_acpi typec_ucsi intel_rapl_common 
intel_soc_dts_iosf snd_seq_device typec intel_pch_thermal snd_timer snd 
int3403_thermal soundcore int340x_thermal_zone i>
  Jul 04 16:58:32 hostname kernel:  pinctrl_cannonlake video pinctrl_intel
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632
  Jul 04 16:58:32 hostname kernel: ---[ end trace cbbaed921eb439ce ]---
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12: 9083e222e632
  Jul 04

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-07-15 Thread Kai-Heng Feng

>From the patch author:

"Please ask what encryption type is in use. The
kerberos_v1 enctypes might exercise a code path I wasn't able to
test."

"Have the testers enable memory debugging : KASAN or SLUB debugging
might provide more information. I might have some time later this week
to try reproducing on upstream stable, but no guarantees."

Follow the discussion here:
https://lore.kernel.org/lkml/309e203b-8818-4e33-87f0-017e12778...@canonical.com/

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https://bugs.launchpad.net/bugs/1886277

Title:
  Regression on NFS: unable to handle page fault in mempool_alloc_slab

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  On kernel 5.4.0-40-generic in focal I'm getting errors like this on
  several machines with different hardware in the first hour after boot:

  Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for 
address: 9083e222e632
  Jul 04 16:58:32 hostname kernel: #PF: supervisor read access in kernel mode
  Jul 04 16:58:32 hostname kernel: #PF: error_code(0x) - not-present page
  Jul 04 16:58:32 hostname kernel: PGD 3ac205067 P4D 3ac205067 PUD 0
  Jul 04 16:58:32 hostname kernel: Oops:  [#1] SMP NOPTI
  Jul 04 16:58:32 hostname kernel: CPU: 4 PID: 289 Comm: kworker/u16:4 Tainted: 
G   OE 5.4.0-40-generic #44-Ubuntu
  Jul 04 16:58:32 hostname kernel: Hardware name: LENOVO 20N2CTO1WW/20N2CTO1WW, 
BIOS N2IET88W (1.66 ) 04/22/2020
  Jul 04 16:58:32 hostname kernel: Workqueue: rpciod rpc_async_schedule [sunrpc]
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12: 9083e222e632
  Jul 04 16:58:32 hostname kernel: R13: 00092800 R14: 908367ca6140 
R15: 908367ca6140
  Jul 04 16:58:32 hostname kernel: FS:  () 
GS:90836c30() knlGS:
  Jul 04 16:58:32 hostname kernel: CS:  0010 DS:  ES:  CR0: 
80050033
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632 CR3: 0003ab80a003 
CR4: 003606e0
  Jul 04 16:58:32 hostname kernel: Call Trace:
  Jul 04 16:58:32 hostname kernel:  ? mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc+0x64/0x180
  Jul 04 16:58:32 hostname kernel:  rpc_malloc+0xa1/0xb0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  call_allocate+0xd1/0x1b0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  ? call_refreshresult+0x100/0x100 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  __rpc_execute+0x8c/0x3a0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  rpc_async_schedule+0x30/0x50 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  process_one_work+0x1eb/0x3b0
  Jul 04 16:58:32 hostname kernel:  worker_thread+0x4d/0x400
  Jul 04 16:58:32 hostname kernel:  kthread+0x104/0x140
  Jul 04 16:58:32 hostname kernel:  ? process_one_work+0x3b0/0x3b0
  Jul 04 16:58:32 hostname kernel:  ? kthread_park+0x90/0x90
  Jul 04 16:58:32 hostname kernel:  ret_from_fork+0x35/0x40
  Jul 04 16:58:32 hostname kernel: Modules linked in: rfcomm rpcsec_gss_krb5 
auth_rpcgss nfsv4 nfs lockd grace fscache vboxnetadp(OE) vboxnetflt(OE) 
vboxdrv(OE) msr ccm cmac algif_hash algif_skcipher af_alg aufs bnep overlay 
nls_iso8859_1 mei_hdcp intel_rapl_msr snd_s>
  Jul 04 16:58:32 hostname kernel:  nvram ledtrig_audio mei_me cfg80211 mei 
processor_thermal_device snd_seq ucsi_acpi typec_ucsi intel_rapl_common 
intel_soc_dts_iosf snd_seq_device typec intel_pch_thermal snd_timer snd 
int3403_thermal soundcore int340x_thermal_zone i>
  Jul 04 16:58:32 hostname kernel:  pinctrl_cannonlake video pinctrl_intel
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632
  Jul 04 16:58:32 hostname kernel: ---[ end trace cbbaed921eb439ce ]---
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-07-15 Thread Pierre Sauter

5.5.19 looks good for me. I have home over nfs4+krb5p, so the original bug 
triggers immediately after login and the DE locks up.
The problem mentioned in comment #31 is not really reproducible, I only 
encountered it on the first few boots on Monday, the patched 5.4.0-40 has been 
stable yesterday and today for my use case.

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Title:
  Regression on NFS: unable to handle page fault in mempool_alloc_slab

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  On kernel 5.4.0-40-generic in focal I'm getting errors like this on
  several machines with different hardware in the first hour after boot:

  Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for 
address: 9083e222e632
  Jul 04 16:58:32 hostname kernel: #PF: supervisor read access in kernel mode
  Jul 04 16:58:32 hostname kernel: #PF: error_code(0x) - not-present page
  Jul 04 16:58:32 hostname kernel: PGD 3ac205067 P4D 3ac205067 PUD 0
  Jul 04 16:58:32 hostname kernel: Oops:  [#1] SMP NOPTI
  Jul 04 16:58:32 hostname kernel: CPU: 4 PID: 289 Comm: kworker/u16:4 Tainted: 
G   OE 5.4.0-40-generic #44-Ubuntu
  Jul 04 16:58:32 hostname kernel: Hardware name: LENOVO 20N2CTO1WW/20N2CTO1WW, 
BIOS N2IET88W (1.66 ) 04/22/2020
  Jul 04 16:58:32 hostname kernel: Workqueue: rpciod rpc_async_schedule [sunrpc]
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12: 9083e222e632
  Jul 04 16:58:32 hostname kernel: R13: 00092800 R14: 908367ca6140 
R15: 908367ca6140
  Jul 04 16:58:32 hostname kernel: FS:  () 
GS:90836c30() knlGS:
  Jul 04 16:58:32 hostname kernel: CS:  0010 DS:  ES:  CR0: 
80050033
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632 CR3: 0003ab80a003 
CR4: 003606e0
  Jul 04 16:58:32 hostname kernel: Call Trace:
  Jul 04 16:58:32 hostname kernel:  ? mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc+0x64/0x180
  Jul 04 16:58:32 hostname kernel:  rpc_malloc+0xa1/0xb0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  call_allocate+0xd1/0x1b0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  ? call_refreshresult+0x100/0x100 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  __rpc_execute+0x8c/0x3a0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  rpc_async_schedule+0x30/0x50 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  process_one_work+0x1eb/0x3b0
  Jul 04 16:58:32 hostname kernel:  worker_thread+0x4d/0x400
  Jul 04 16:58:32 hostname kernel:  kthread+0x104/0x140
  Jul 04 16:58:32 hostname kernel:  ? process_one_work+0x3b0/0x3b0
  Jul 04 16:58:32 hostname kernel:  ? kthread_park+0x90/0x90
  Jul 04 16:58:32 hostname kernel:  ret_from_fork+0x35/0x40
  Jul 04 16:58:32 hostname kernel: Modules linked in: rfcomm rpcsec_gss_krb5 
auth_rpcgss nfsv4 nfs lockd grace fscache vboxnetadp(OE) vboxnetflt(OE) 
vboxdrv(OE) msr ccm cmac algif_hash algif_skcipher af_alg aufs bnep overlay 
nls_iso8859_1 mei_hdcp intel_rapl_msr snd_s>
  Jul 04 16:58:32 hostname kernel:  nvram ledtrig_audio mei_me cfg80211 mei 
processor_thermal_device snd_seq ucsi_acpi typec_ucsi intel_rapl_common 
intel_soc_dts_iosf snd_seq_device typec intel_pch_thermal snd_timer snd 
int3403_thermal soundcore int340x_thermal_zone i>
  Jul 04 16:58:32 hostname kernel:  pinctrl_cannonlake video pinctrl_intel
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632
  Jul 04 16:58:32 hostname kernel: ---[ end trace cbbaed921eb439ce ]---
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI:

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-07-15 Thread Kai-Heng Feng

The patch author wants to know if upstream stable 5.5 has the same issue.
The kernel can be found here:
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.5.19/

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https://bugs.launchpad.net/bugs/1886277

Title:
  Regression on NFS: unable to handle page fault in mempool_alloc_slab

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  On kernel 5.4.0-40-generic in focal I'm getting errors like this on
  several machines with different hardware in the first hour after boot:

  Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for 
address: 9083e222e632
  Jul 04 16:58:32 hostname kernel: #PF: supervisor read access in kernel mode
  Jul 04 16:58:32 hostname kernel: #PF: error_code(0x) - not-present page
  Jul 04 16:58:32 hostname kernel: PGD 3ac205067 P4D 3ac205067 PUD 0
  Jul 04 16:58:32 hostname kernel: Oops:  [#1] SMP NOPTI
  Jul 04 16:58:32 hostname kernel: CPU: 4 PID: 289 Comm: kworker/u16:4 Tainted: 
G   OE 5.4.0-40-generic #44-Ubuntu
  Jul 04 16:58:32 hostname kernel: Hardware name: LENOVO 20N2CTO1WW/20N2CTO1WW, 
BIOS N2IET88W (1.66 ) 04/22/2020
  Jul 04 16:58:32 hostname kernel: Workqueue: rpciod rpc_async_schedule [sunrpc]
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12: 9083e222e632
  Jul 04 16:58:32 hostname kernel: R13: 00092800 R14: 908367ca6140 
R15: 908367ca6140
  Jul 04 16:58:32 hostname kernel: FS:  () 
GS:90836c30() knlGS:
  Jul 04 16:58:32 hostname kernel: CS:  0010 DS:  ES:  CR0: 
80050033
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632 CR3: 0003ab80a003 
CR4: 003606e0
  Jul 04 16:58:32 hostname kernel: Call Trace:
  Jul 04 16:58:32 hostname kernel:  ? mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc+0x64/0x180
  Jul 04 16:58:32 hostname kernel:  rpc_malloc+0xa1/0xb0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  call_allocate+0xd1/0x1b0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  ? call_refreshresult+0x100/0x100 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  __rpc_execute+0x8c/0x3a0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  rpc_async_schedule+0x30/0x50 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  process_one_work+0x1eb/0x3b0
  Jul 04 16:58:32 hostname kernel:  worker_thread+0x4d/0x400
  Jul 04 16:58:32 hostname kernel:  kthread+0x104/0x140
  Jul 04 16:58:32 hostname kernel:  ? process_one_work+0x3b0/0x3b0
  Jul 04 16:58:32 hostname kernel:  ? kthread_park+0x90/0x90
  Jul 04 16:58:32 hostname kernel:  ret_from_fork+0x35/0x40
  Jul 04 16:58:32 hostname kernel: Modules linked in: rfcomm rpcsec_gss_krb5 
auth_rpcgss nfsv4 nfs lockd grace fscache vboxnetadp(OE) vboxnetflt(OE) 
vboxdrv(OE) msr ccm cmac algif_hash algif_skcipher af_alg aufs bnep overlay 
nls_iso8859_1 mei_hdcp intel_rapl_msr snd_s>
  Jul 04 16:58:32 hostname kernel:  nvram ledtrig_audio mei_me cfg80211 mei 
processor_thermal_device snd_seq ucsi_acpi typec_ucsi intel_rapl_common 
intel_soc_dts_iosf snd_seq_device typec intel_pch_thermal snd_timer snd 
int3403_thermal soundcore int340x_thermal_zone i>
  Jul 04 16:58:32 hostname kernel:  pinctrl_cannonlake video pinctrl_intel
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632
  Jul 04 16:58:32 hostname kernel: ---[ end trace cbbaed921eb439ce ]---
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11:

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-07-13 Thread Pierre Sauter

https://github.com/torvalds/linux/commit/89a3c9f5b9f0bcaa9aea3e8b2a616fcaea9aad78
SUNRPC: Properly set the @Subbuf parameter of xdr_buf_subsegment()

When I apply that patch to 5.4.0-40-generic the original bug disappears,
however I sometimes still get:

[Mo Jul 13 20:22:53 2020] BUG: unable to handle page fault for address: 
98fd15cd
[Mo Jul 13 20:22:53 2020] #PF: supervisor write access in kernel mode
[Mo Jul 13 20:22:53 2020] #PF: error_code(0x0003) - permissions violation
[Mo Jul 13 20:22:53 2020] PGD 214c01067 P4D 214c01067 PUD 214c05067 PMD 
455d94063 PTE 800455cd0061
[Mo Jul 13 20:22:53 2020] Oops: 0003 [#1] SMP PTI
[Mo Jul 13 20:22:53 2020] CPU: 0 PID: 1428 Comm: update-desktop- Tainted: G 
  OE 5.4.0-40-generic #44
[Mo Jul 13 20:22:53 2020] Hardware name: XXX
[Mo Jul 13 20:22:53 2020] RIP: 0010:memcpy_erms+0x6/0x10
[Mo Jul 13 20:22:53 2020] Code: ff 90 90 90 eb 1e 0f 1f 00 48 89 f8 48 89 d1 48 
c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 c3 66 0f 1f 44 00 00 48 89 f8 48 89 d1 
 a4 c3 0f 1f 80 00 00 00 00 48 89 f8 48 83 fa 
20 72 7e 40 38 fe
[Mo Jul 13 20:22:53 2020] RSP: 0018:b4f780bdb610 EFLAGS: 00010286
[Mo Jul 13 20:22:53 2020] RAX: 98fd15ccffc4 RBX: b4f780bdba08 RCX: 
0004
[Mo Jul 13 20:22:53 2020] RDX: 0040 RSI: 98fd132eb064 RDI: 
98fd15cd
[Mo Jul 13 20:22:53 2020] RBP: b4f780bdb640 R08:  R09: 
015b
[Mo Jul 13 20:22:53 2020] R10: b4f780bdb5e0 R11: 98fd10f14850 R12: 
0028
[Mo Jul 13 20:22:53 2020] R13: 0040 R14: 98fd188be280 R15: 
0040
[Mo Jul 13 20:22:53 2020] FS:  7fea854dcb80() GS:98fd1da0() 
knlGS:
[Mo Jul 13 20:22:53 2020] CS:  0010 DS:  ES:  CR0: 80050033
[Mo Jul 13 20:22:53 2020] CR2: 98fd15cd CR3: 0004532e0003 CR4: 
003606f0
[Mo Jul 13 20:22:53 2020] Call Trace:
[Mo Jul 13 20:22:53 2020]  ? _copy_from_pages+0x6f/0xa0 [sunrpc]
[Mo Jul 13 20:22:53 2020]  xdr_shrink_pagelen+0x83/0xb0 [sunrpc]
[Mo Jul 13 20:22:53 2020]  xdr_align_pages+0x8e/0x1c0 [sunrpc]
[Mo Jul 13 20:22:53 2020]  xdr_read_pages+0x18/0x80 [sunrpc]
[Mo Jul 13 20:22:53 2020]  nfs4_xdr_dec_readlink+0xea/0x140 [nfsv4]
[Mo Jul 13 20:22:53 2020]  rpcauth_unwrap_resp_decode+0x27/0x30 [sunrpc]
[Mo Jul 13 20:22:53 2020]  gss_unwrap_resp+0x358/0x5a0 [auth_rpcgss]
[Mo Jul 13 20:22:53 2020]  ? call_bind_status+0x290/0x290 [sunrpc]
[Mo Jul 13 20:22:53 2020]  rpcauth_unwrap_resp+0x24/0x30 [sunrpc]
[Mo Jul 13 20:22:53 2020]  call_decode+0x158/0x1d0 [sunrpc]
[Mo Jul 13 20:22:53 2020]  __rpc_execute+0x8c/0x3a0 [sunrpc]
[Mo Jul 13 20:22:53 2020]  rpc_execute+0xa0/0xb0 [sunrpc]
[Mo Jul 13 20:22:53 2020]  rpc_run_task+0x120/0x150 [sunrpc]
[Mo Jul 13 20:22:53 2020]  nfs4_call_sync_custom+0x10/0x30 [nfsv4]
[Mo Jul 13 20:22:53 2020]  nfs4_call_sync_sequence+0x65/0x80 [nfsv4]
[Mo Jul 13 20:22:53 2020]  _nfs4_proc_readlink+0xa3/0xc0 [nfsv4]
[Mo Jul 13 20:22:53 2020]  nfs4_proc_readlink+0x6e/0x100 [nfsv4]
[Mo Jul 13 20:22:53 2020]  nfs_symlink_filler+0x33/0x70 [nfs]
[Mo Jul 13 20:22:53 2020]  do_read_cache_page+0x2f6/0x830
[Mo Jul 13 20:22:53 2020]  ? nfs_get_link+0x120/0x120 [nfs]
[Mo Jul 13 20:22:53 2020]  ? xas_load+0xd/0x80
[Mo Jul 13 20:22:53 2020]  ? find_get_entry+0x5e/0x170
[Mo Jul 13 20:22:53 2020]  ? nfs4_do_check_delegation+0x1d/0x40 [nfsv4]
[Mo Jul 13 20:22:53 2020]  ? nfs4_have_delegation+0x13/0x20 [nfsv4]
[Mo Jul 13 20:22:53 2020]  ? nfs_check_cache_invalid+0x38/0xa0 [nfs]
[Mo Jul 13 20:22:53 2020]  read_cache_page+0x12/0x20
[Mo Jul 13 20:22:53 2020]  nfs_get_link+0x47/0x120 [nfs]
[Mo Jul 13 20:22:53 2020]  trailing_symlink+0x21d/0x280
[Mo Jul 13 20:22:53 2020]  ? nfs_destroy_readpagecache+0x20/0x20 [nfs]
[Mo Jul 13 20:22:53 2020]  path_lookupat.isra.0+0x8c/0x230
[Mo Jul 13 20:22:53 2020]  ? rpc_free_task+0x64/0x70 [sunrpc]
[Mo Jul 13 20:22:53 2020]  ? rpc_do_put_task+0x6a/0x70 [sunrpc]
[Mo Jul 13 20:22:53 2020]  filename_lookup+0xae/0x170
[Mo Jul 13 20:22:53 2020]  ? strncpy_from_user+0x4c/0x150
[Mo Jul 13 20:22:53 2020]  user_path_at_empty+0x3a/0x50
[Mo Jul 13 20:22:53 2020]  vfs_statx+0x7d/0xe0
[Mo Jul 13 20:22:53 2020]  __do_sys_newstat+0x3e/0x80
[Mo Jul 13 20:22:53 2020]  ? _cond_resched+0x19/0x30
[Mo Jul 13 20:22:53 2020]  ? exit_to_usermode_loop+0xea/0x160
[Mo Jul 13 20:22:53 2020]  __x64_sys_newstat+0x16/0x20
[Mo Jul 13 20:22:53 2020]  do_syscall_64+0x57/0x190
[Mo Jul 13 20:22:53 2020]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[Mo Jul 13 20:22:53 2020] RIP: 0033:0x7fea8568449a

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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1886277

Title:
  Regression on NFS: unable to handle page fault in mempool_alloc_slab

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  On kernel 5.4.0-40-generic in focal I'm getting errors like this on
  several machines with different hardware in the

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-07-13 Thread Pierre Sauter

I can confirm that 5.8.0-050800-generic does fix the bug. I also tested
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.4.51/ and the problem
is still present in that version.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1886277

Title:
  Regression on NFS: unable to handle page fault in mempool_alloc_slab

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  On kernel 5.4.0-40-generic in focal I'm getting errors like this on
  several machines with different hardware in the first hour after boot:

  Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for 
address: 9083e222e632
  Jul 04 16:58:32 hostname kernel: #PF: supervisor read access in kernel mode
  Jul 04 16:58:32 hostname kernel: #PF: error_code(0x) - not-present page
  Jul 04 16:58:32 hostname kernel: PGD 3ac205067 P4D 3ac205067 PUD 0
  Jul 04 16:58:32 hostname kernel: Oops:  [#1] SMP NOPTI
  Jul 04 16:58:32 hostname kernel: CPU: 4 PID: 289 Comm: kworker/u16:4 Tainted: 
G   OE 5.4.0-40-generic #44-Ubuntu
  Jul 04 16:58:32 hostname kernel: Hardware name: LENOVO 20N2CTO1WW/20N2CTO1WW, 
BIOS N2IET88W (1.66 ) 04/22/2020
  Jul 04 16:58:32 hostname kernel: Workqueue: rpciod rpc_async_schedule [sunrpc]
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12: 9083e222e632
  Jul 04 16:58:32 hostname kernel: R13: 00092800 R14: 908367ca6140 
R15: 908367ca6140
  Jul 04 16:58:32 hostname kernel: FS:  () 
GS:90836c30() knlGS:
  Jul 04 16:58:32 hostname kernel: CS:  0010 DS:  ES:  CR0: 
80050033
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632 CR3: 0003ab80a003 
CR4: 003606e0
  Jul 04 16:58:32 hostname kernel: Call Trace:
  Jul 04 16:58:32 hostname kernel:  ? mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc+0x64/0x180
  Jul 04 16:58:32 hostname kernel:  rpc_malloc+0xa1/0xb0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  call_allocate+0xd1/0x1b0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  ? call_refreshresult+0x100/0x100 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  __rpc_execute+0x8c/0x3a0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  rpc_async_schedule+0x30/0x50 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  process_one_work+0x1eb/0x3b0
  Jul 04 16:58:32 hostname kernel:  worker_thread+0x4d/0x400
  Jul 04 16:58:32 hostname kernel:  kthread+0x104/0x140
  Jul 04 16:58:32 hostname kernel:  ? process_one_work+0x3b0/0x3b0
  Jul 04 16:58:32 hostname kernel:  ? kthread_park+0x90/0x90
  Jul 04 16:58:32 hostname kernel:  ret_from_fork+0x35/0x40
  Jul 04 16:58:32 hostname kernel: Modules linked in: rfcomm rpcsec_gss_krb5 
auth_rpcgss nfsv4 nfs lockd grace fscache vboxnetadp(OE) vboxnetflt(OE) 
vboxdrv(OE) msr ccm cmac algif_hash algif_skcipher af_alg aufs bnep overlay 
nls_iso8859_1 mei_hdcp intel_rapl_msr snd_s>
  Jul 04 16:58:32 hostname kernel:  nvram ledtrig_audio mei_me cfg80211 mei 
processor_thermal_device snd_seq ucsi_acpi typec_ucsi intel_rapl_common 
intel_soc_dts_iosf snd_seq_device typec intel_pch_thermal snd_timer snd 
int3403_thermal soundcore int340x_thermal_zone i>
  Jul 04 16:58:32 hostname kernel:  pinctrl_cannonlake video pinctrl_intel
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632
  Jul 04 16:58:32 hostname kernel: ---[ end trace cbbaed921eb439ce ]---
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10:

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-07-13 Thread Kai-Heng Feng

Can you please also test upstream 5.4:
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.4.51/

Hopefully we don't need to do any backport, there are a hundred
commits...

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https://bugs.launchpad.net/bugs/1886277

Title:
  Regression on NFS: unable to handle page fault in mempool_alloc_slab

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  On kernel 5.4.0-40-generic in focal I'm getting errors like this on
  several machines with different hardware in the first hour after boot:

  Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for 
address: 9083e222e632
  Jul 04 16:58:32 hostname kernel: #PF: supervisor read access in kernel mode
  Jul 04 16:58:32 hostname kernel: #PF: error_code(0x) - not-present page
  Jul 04 16:58:32 hostname kernel: PGD 3ac205067 P4D 3ac205067 PUD 0
  Jul 04 16:58:32 hostname kernel: Oops:  [#1] SMP NOPTI
  Jul 04 16:58:32 hostname kernel: CPU: 4 PID: 289 Comm: kworker/u16:4 Tainted: 
G   OE 5.4.0-40-generic #44-Ubuntu
  Jul 04 16:58:32 hostname kernel: Hardware name: LENOVO 20N2CTO1WW/20N2CTO1WW, 
BIOS N2IET88W (1.66 ) 04/22/2020
  Jul 04 16:58:32 hostname kernel: Workqueue: rpciod rpc_async_schedule [sunrpc]
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12: 9083e222e632
  Jul 04 16:58:32 hostname kernel: R13: 00092800 R14: 908367ca6140 
R15: 908367ca6140
  Jul 04 16:58:32 hostname kernel: FS:  () 
GS:90836c30() knlGS:
  Jul 04 16:58:32 hostname kernel: CS:  0010 DS:  ES:  CR0: 
80050033
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632 CR3: 0003ab80a003 
CR4: 003606e0
  Jul 04 16:58:32 hostname kernel: Call Trace:
  Jul 04 16:58:32 hostname kernel:  ? mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc+0x64/0x180
  Jul 04 16:58:32 hostname kernel:  rpc_malloc+0xa1/0xb0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  call_allocate+0xd1/0x1b0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  ? call_refreshresult+0x100/0x100 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  __rpc_execute+0x8c/0x3a0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  rpc_async_schedule+0x30/0x50 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  process_one_work+0x1eb/0x3b0
  Jul 04 16:58:32 hostname kernel:  worker_thread+0x4d/0x400
  Jul 04 16:58:32 hostname kernel:  kthread+0x104/0x140
  Jul 04 16:58:32 hostname kernel:  ? process_one_work+0x3b0/0x3b0
  Jul 04 16:58:32 hostname kernel:  ? kthread_park+0x90/0x90
  Jul 04 16:58:32 hostname kernel:  ret_from_fork+0x35/0x40
  Jul 04 16:58:32 hostname kernel: Modules linked in: rfcomm rpcsec_gss_krb5 
auth_rpcgss nfsv4 nfs lockd grace fscache vboxnetadp(OE) vboxnetflt(OE) 
vboxdrv(OE) msr ccm cmac algif_hash algif_skcipher af_alg aufs bnep overlay 
nls_iso8859_1 mei_hdcp intel_rapl_msr snd_s>
  Jul 04 16:58:32 hostname kernel:  nvram ledtrig_audio mei_me cfg80211 mei 
processor_thermal_device snd_seq ucsi_acpi typec_ucsi intel_rapl_common 
intel_soc_dts_iosf snd_seq_device typec intel_pch_thermal snd_timer snd 
int3403_thermal soundcore int340x_thermal_zone i>
  Jul 04 16:58:32 hostname kernel:  pinctrl_cannonlake video pinctrl_intel
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632
  Jul 04 16:58:32 hostname kernel: ---[ end trace cbbaed921eb439ce ]---
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10:

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-07-12 Thread Marian Rainer-Harbach

I downloaded and installed the packages from https://kernel.ubuntu.com
/~kernel-ppa/mainline/v5.8-rc4/amd64/ and tested 5.8.0-050800-generic
#202007052030. I could not reproduce the problem in this version.

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https://bugs.launchpad.net/bugs/1886277

Title:
  Regression on NFS: unable to handle page fault in mempool_alloc_slab

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  On kernel 5.4.0-40-generic in focal I'm getting errors like this on
  several machines with different hardware in the first hour after boot:

  Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for 
address: 9083e222e632
  Jul 04 16:58:32 hostname kernel: #PF: supervisor read access in kernel mode
  Jul 04 16:58:32 hostname kernel: #PF: error_code(0x) - not-present page
  Jul 04 16:58:32 hostname kernel: PGD 3ac205067 P4D 3ac205067 PUD 0
  Jul 04 16:58:32 hostname kernel: Oops:  [#1] SMP NOPTI
  Jul 04 16:58:32 hostname kernel: CPU: 4 PID: 289 Comm: kworker/u16:4 Tainted: 
G   OE 5.4.0-40-generic #44-Ubuntu
  Jul 04 16:58:32 hostname kernel: Hardware name: LENOVO 20N2CTO1WW/20N2CTO1WW, 
BIOS N2IET88W (1.66 ) 04/22/2020
  Jul 04 16:58:32 hostname kernel: Workqueue: rpciod rpc_async_schedule [sunrpc]
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12: 9083e222e632
  Jul 04 16:58:32 hostname kernel: R13: 00092800 R14: 908367ca6140 
R15: 908367ca6140
  Jul 04 16:58:32 hostname kernel: FS:  () 
GS:90836c30() knlGS:
  Jul 04 16:58:32 hostname kernel: CS:  0010 DS:  ES:  CR0: 
80050033
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632 CR3: 0003ab80a003 
CR4: 003606e0
  Jul 04 16:58:32 hostname kernel: Call Trace:
  Jul 04 16:58:32 hostname kernel:  ? mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc+0x64/0x180
  Jul 04 16:58:32 hostname kernel:  rpc_malloc+0xa1/0xb0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  call_allocate+0xd1/0x1b0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  ? call_refreshresult+0x100/0x100 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  __rpc_execute+0x8c/0x3a0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  rpc_async_schedule+0x30/0x50 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  process_one_work+0x1eb/0x3b0
  Jul 04 16:58:32 hostname kernel:  worker_thread+0x4d/0x400
  Jul 04 16:58:32 hostname kernel:  kthread+0x104/0x140
  Jul 04 16:58:32 hostname kernel:  ? process_one_work+0x3b0/0x3b0
  Jul 04 16:58:32 hostname kernel:  ? kthread_park+0x90/0x90
  Jul 04 16:58:32 hostname kernel:  ret_from_fork+0x35/0x40
  Jul 04 16:58:32 hostname kernel: Modules linked in: rfcomm rpcsec_gss_krb5 
auth_rpcgss nfsv4 nfs lockd grace fscache vboxnetadp(OE) vboxnetflt(OE) 
vboxdrv(OE) msr ccm cmac algif_hash algif_skcipher af_alg aufs bnep overlay 
nls_iso8859_1 mei_hdcp intel_rapl_msr snd_s>
  Jul 04 16:58:32 hostname kernel:  nvram ledtrig_audio mei_me cfg80211 mei 
processor_thermal_device snd_seq ucsi_acpi typec_ucsi intel_rapl_common 
intel_soc_dts_iosf snd_seq_device typec intel_pch_thermal snd_timer snd 
int3403_thermal soundcore int340x_thermal_zone i>
  Jul 04 16:58:32 hostname kernel:  pinctrl_cannonlake video pinctrl_intel
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632
  Jul 04 16:58:32 hostname kernel: ---[ end trace cbbaed921eb439ce ]---
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-07-10 Thread Kai-Heng Feng

Please test latest mainline kernel:
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.8-rc4/

If mainline kernel works, then we need to backport some commits to
filling gap between v5.4 and the offending commit.

If mainline kernel doesn't work, we need to raise the issue to upstream.

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https://bugs.launchpad.net/bugs/1886277

Title:
  Regression on NFS: unable to handle page fault in mempool_alloc_slab

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  On kernel 5.4.0-40-generic in focal I'm getting errors like this on
  several machines with different hardware in the first hour after boot:

  Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for 
address: 9083e222e632
  Jul 04 16:58:32 hostname kernel: #PF: supervisor read access in kernel mode
  Jul 04 16:58:32 hostname kernel: #PF: error_code(0x) - not-present page
  Jul 04 16:58:32 hostname kernel: PGD 3ac205067 P4D 3ac205067 PUD 0
  Jul 04 16:58:32 hostname kernel: Oops:  [#1] SMP NOPTI
  Jul 04 16:58:32 hostname kernel: CPU: 4 PID: 289 Comm: kworker/u16:4 Tainted: 
G   OE 5.4.0-40-generic #44-Ubuntu
  Jul 04 16:58:32 hostname kernel: Hardware name: LENOVO 20N2CTO1WW/20N2CTO1WW, 
BIOS N2IET88W (1.66 ) 04/22/2020
  Jul 04 16:58:32 hostname kernel: Workqueue: rpciod rpc_async_schedule [sunrpc]
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12: 9083e222e632
  Jul 04 16:58:32 hostname kernel: R13: 00092800 R14: 908367ca6140 
R15: 908367ca6140
  Jul 04 16:58:32 hostname kernel: FS:  () 
GS:90836c30() knlGS:
  Jul 04 16:58:32 hostname kernel: CS:  0010 DS:  ES:  CR0: 
80050033
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632 CR3: 0003ab80a003 
CR4: 003606e0
  Jul 04 16:58:32 hostname kernel: Call Trace:
  Jul 04 16:58:32 hostname kernel:  ? mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc+0x64/0x180
  Jul 04 16:58:32 hostname kernel:  rpc_malloc+0xa1/0xb0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  call_allocate+0xd1/0x1b0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  ? call_refreshresult+0x100/0x100 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  __rpc_execute+0x8c/0x3a0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  rpc_async_schedule+0x30/0x50 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  process_one_work+0x1eb/0x3b0
  Jul 04 16:58:32 hostname kernel:  worker_thread+0x4d/0x400
  Jul 04 16:58:32 hostname kernel:  kthread+0x104/0x140
  Jul 04 16:58:32 hostname kernel:  ? process_one_work+0x3b0/0x3b0
  Jul 04 16:58:32 hostname kernel:  ? kthread_park+0x90/0x90
  Jul 04 16:58:32 hostname kernel:  ret_from_fork+0x35/0x40
  Jul 04 16:58:32 hostname kernel: Modules linked in: rfcomm rpcsec_gss_krb5 
auth_rpcgss nfsv4 nfs lockd grace fscache vboxnetadp(OE) vboxnetflt(OE) 
vboxdrv(OE) msr ccm cmac algif_hash algif_skcipher af_alg aufs bnep overlay 
nls_iso8859_1 mei_hdcp intel_rapl_msr snd_s>
  Jul 04 16:58:32 hostname kernel:  nvram ledtrig_audio mei_me cfg80211 mei 
processor_thermal_device snd_seq ucsi_acpi typec_ucsi intel_rapl_common 
intel_soc_dts_iosf snd_seq_device typec intel_pch_thermal snd_timer snd 
int3403_thermal soundcore int340x_thermal_zone i>
  Jul 04 16:58:32 hostname kernel:  pinctrl_cannonlake video pinctrl_intel
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632
  Jul 04 16:58:32 hostname kernel: ---[ end trace cbbaed921eb439ce ]---
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP:

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-07-10 Thread Marian Rainer-Harbach

Thanks for the advice for bisecting! I found the commits causing the
problem:

After bb4fb62a863ea6131bdac77b21faa9444a605c58 (SUNRPC: Add "@len" parameter to 
gss_unwrap()) NFS with Kerberos is completely broken:
$ mount -v /nfs/share
mount.nfs: trying text-based options 
'sec=krb5p,soft,intr,bg,timeo=100,retrans=2,vers=4.2,addr=:::1::1,clientaddr=:::1::dbfb'
mount.nfs: mount(2): Input/output error
mount.nfs: mount system call failed

After c711ec1aa0c8ff7d979d7f12d1d09df46f349d61 (SUNRPC: Fix GSS privacy
computation of auth->au_ralign) mounts work again but the crashes shown
in the previous comments occur.

** Changed in: linux (Ubuntu)
   Status: Incomplete => Confirmed

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1886277

Title:
  Regression on NFS: unable to handle page fault in mempool_alloc_slab

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  On kernel 5.4.0-40-generic in focal I'm getting errors like this on
  several machines with different hardware in the first hour after boot:

  Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for 
address: 9083e222e632
  Jul 04 16:58:32 hostname kernel: #PF: supervisor read access in kernel mode
  Jul 04 16:58:32 hostname kernel: #PF: error_code(0x) - not-present page
  Jul 04 16:58:32 hostname kernel: PGD 3ac205067 P4D 3ac205067 PUD 0
  Jul 04 16:58:32 hostname kernel: Oops:  [#1] SMP NOPTI
  Jul 04 16:58:32 hostname kernel: CPU: 4 PID: 289 Comm: kworker/u16:4 Tainted: 
G   OE 5.4.0-40-generic #44-Ubuntu
  Jul 04 16:58:32 hostname kernel: Hardware name: LENOVO 20N2CTO1WW/20N2CTO1WW, 
BIOS N2IET88W (1.66 ) 04/22/2020
  Jul 04 16:58:32 hostname kernel: Workqueue: rpciod rpc_async_schedule [sunrpc]
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12: 9083e222e632
  Jul 04 16:58:32 hostname kernel: R13: 00092800 R14: 908367ca6140 
R15: 908367ca6140
  Jul 04 16:58:32 hostname kernel: FS:  () 
GS:90836c30() knlGS:
  Jul 04 16:58:32 hostname kernel: CS:  0010 DS:  ES:  CR0: 
80050033
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632 CR3: 0003ab80a003 
CR4: 003606e0
  Jul 04 16:58:32 hostname kernel: Call Trace:
  Jul 04 16:58:32 hostname kernel:  ? mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc+0x64/0x180
  Jul 04 16:58:32 hostname kernel:  rpc_malloc+0xa1/0xb0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  call_allocate+0xd1/0x1b0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  ? call_refreshresult+0x100/0x100 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  __rpc_execute+0x8c/0x3a0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  rpc_async_schedule+0x30/0x50 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  process_one_work+0x1eb/0x3b0
  Jul 04 16:58:32 hostname kernel:  worker_thread+0x4d/0x400
  Jul 04 16:58:32 hostname kernel:  kthread+0x104/0x140
  Jul 04 16:58:32 hostname kernel:  ? process_one_work+0x3b0/0x3b0
  Jul 04 16:58:32 hostname kernel:  ? kthread_park+0x90/0x90
  Jul 04 16:58:32 hostname kernel:  ret_from_fork+0x35/0x40
  Jul 04 16:58:32 hostname kernel: Modules linked in: rfcomm rpcsec_gss_krb5 
auth_rpcgss nfsv4 nfs lockd grace fscache vboxnetadp(OE) vboxnetflt(OE) 
vboxdrv(OE) msr ccm cmac algif_hash algif_skcipher af_alg aufs bnep overlay 
nls_iso8859_1 mei_hdcp intel_rapl_msr snd_s>
  Jul 04 16:58:32 hostname kernel:  nvram ledtrig_audio mei_me cfg80211 mei 
processor_thermal_device snd_seq ucsi_acpi typec_ucsi intel_rapl_common 
intel_soc_dts_iosf snd_seq_device typec intel_pch_thermal snd_timer snd 
int3403_thermal soundcore int340x_thermal_zone i>
  Jul 04 16:58:32 hostname kernel:  pinctrl_cannonlake video pinctrl_intel
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632
  Jul 04 16:58:32 hostname kernel: ---[ end trace cbbaed921eb439ce ]---
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

2020-07-08 Thread Kai-Heng Feng

** Summary changed:

- unable to handle page fault in mempool_alloc_slab
+ Regression on NFS: unable to handle page fault in mempool_alloc_slab

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1886277

Title:
  Regression on NFS: unable to handle page fault in mempool_alloc_slab

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  On kernel 5.4.0-40-generic in focal I'm getting errors like this on
  several machines with different hardware in the first hour after boot:

  Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for 
address: 9083e222e632
  Jul 04 16:58:32 hostname kernel: #PF: supervisor read access in kernel mode
  Jul 04 16:58:32 hostname kernel: #PF: error_code(0x) - not-present page
  Jul 04 16:58:32 hostname kernel: PGD 3ac205067 P4D 3ac205067 PUD 0
  Jul 04 16:58:32 hostname kernel: Oops:  [#1] SMP NOPTI
  Jul 04 16:58:32 hostname kernel: CPU: 4 PID: 289 Comm: kworker/u16:4 Tainted: 
G   OE 5.4.0-40-generic #44-Ubuntu
  Jul 04 16:58:32 hostname kernel: Hardware name: LENOVO 20N2CTO1WW/20N2CTO1WW, 
BIOS N2IET88W (1.66 ) 04/22/2020
  Jul 04 16:58:32 hostname kernel: Workqueue: rpciod rpc_async_schedule [sunrpc]
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018 
R12: 9083e222e632
  Jul 04 16:58:32 hostname kernel: R13: 00092800 R14: 908367ca6140 
R15: 908367ca6140
  Jul 04 16:58:32 hostname kernel: FS:  () 
GS:90836c30() knlGS:
  Jul 04 16:58:32 hostname kernel: CS:  0010 DS:  ES:  CR0: 
80050033
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632 CR3: 0003ab80a003 
CR4: 003606e0
  Jul 04 16:58:32 hostname kernel: Call Trace:
  Jul 04 16:58:32 hostname kernel:  ? mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc_slab+0x17/0x20
  Jul 04 16:58:32 hostname kernel:  mempool_alloc+0x64/0x180
  Jul 04 16:58:32 hostname kernel:  rpc_malloc+0xa1/0xb0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  call_allocate+0xd1/0x1b0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  ? call_refreshresult+0x100/0x100 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  __rpc_execute+0x8c/0x3a0 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  rpc_async_schedule+0x30/0x50 [sunrpc]
  Jul 04 16:58:32 hostname kernel:  process_one_work+0x1eb/0x3b0
  Jul 04 16:58:32 hostname kernel:  worker_thread+0x4d/0x400
  Jul 04 16:58:32 hostname kernel:  kthread+0x104/0x140
  Jul 04 16:58:32 hostname kernel:  ? process_one_work+0x3b0/0x3b0
  Jul 04 16:58:32 hostname kernel:  ? kthread_park+0x90/0x90
  Jul 04 16:58:32 hostname kernel:  ret_from_fork+0x35/0x40
  Jul 04 16:58:32 hostname kernel: Modules linked in: rfcomm rpcsec_gss_krb5 
auth_rpcgss nfsv4 nfs lockd grace fscache vboxnetadp(OE) vboxnetflt(OE) 
vboxdrv(OE) msr ccm cmac algif_hash algif_skcipher af_alg aufs bnep overlay 
nls_iso8859_1 mei_hdcp intel_rapl_msr snd_s>
  Jul 04 16:58:32 hostname kernel:  nvram ledtrig_audio mei_me cfg80211 mei 
processor_thermal_device snd_seq ucsi_acpi typec_ucsi intel_rapl_common 
intel_soc_dts_iosf snd_seq_device typec intel_pch_thermal snd_timer snd 
int3403_thermal soundcore int340x_thermal_zone i>
  Jul 04 16:58:32 hostname kernel:  pinctrl_cannonlake video pinctrl_intel
  Jul 04 16:58:32 hostname kernel: CR2: 9083e222e632
  Jul 04 16:58:32 hostname kernel: ---[ end trace cbbaed921eb439ce ]---
  Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
  Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65 
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f 
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
  Jul 04 16:58:32 hostname kernel: RSP: 0018:bc38c046fcc8 EFLAGS: 00010282
  Jul 04 16:58:32 hostname kernel: RAX: 9083e222e632 RBX:  
RCX: 0002
  Jul 04 16:58:32 hostname kernel: RDX: 0009 RSI: 00092800 
RDI: 00031fb0
  Jul 04 16:58:32 hostname kernel: RBP: bc38c046fcf8 R08: 90836c331fb0 
R09: c1436a94
  Jul 04 16:58:32 hostname kernel: R10: 908368178d2c R11: 0018

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

[Kernel-packages] [Bug 1886277] Re: Regression on NFS: unable to handle page fault in mempool_alloc_slab

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