What's the status on the update? We're getting crashes on Ubuntu 18.04,
Amazon kernel 5.4.0-1081-aws.

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https://bugs.launchpad.net/bugs/1981658

Title:
  BUG: kernel NULL pointer dereference, address: 0000000000000008

Status in linux package in Ubuntu:
  Confirmed
Status in linux-hwe-5.4 package in Ubuntu:
  Confirmed
Status in linux source package in Bionic:
  Confirmed
Status in linux-hwe-5.4 source package in Bionic:
  Confirmed

Bug description:
  Hi,

  On one of the main US Ubuntu Archive servers (banjo), we decided to
  reboot into a HWE kernel. The latest being 5.4.0-122 but on doing so,
  ran into this kernel panic:

  | [  350.776585] BUG: kernel NULL pointer dereference, address: 
0000000000000008
  | [  350.783674] #PF: supervisor read access in kernel mode
  | [  350.788846] #PF: error_code(0x0000) - not-present page
  | [  350.794019] PGD 0 P4D 0
  | [  350.796631] Oops: 0000 [#1] SMP NOPTI
  | [  350.800425] CPU: 8 PID: 0 Comm: swapper/8 Not tainted 5.4.0-122-generic 
#138~18.04.1-Ubuntu
  | [  350.808918] Hardware name: HPE ProLiant DL385 Gen10/ProLiant DL385 
Gen10, BIOS A40 02/10/2022
  | [  350.817666] RIP: 0010:tcp_create_openreq_child+0x2e1/0x3e0
  | [  350.823187] Code: 08 00 00 41 8b 84 24 18 01 00 00 48 c7 83 80 08 00 00 
00 00 00 00 4c 89 e6 4c 89 ef 89 83 c4 05 00 00 49 8b 84 24 f8 00 00 00 <48> 8b 
40 08 e8 96 28 42 00 48 85 c0 0f b7 83 68 05 00 00 74 0a 83
  | [  350.842068] RSP: 0018:ffff9a958cce8858 EFLAGS: 00010246
  | [  350.847324] RAX: 0000000000000000 RBX: ffff897618739c80 RCX: 
0000000000000007
  | [  350.854502] RDX: 0000000000000020 RSI: ffff897607afb0b0 RDI: 
ffff897605c85580
  | [  350.861682] RBP: ffff9a958cce8878 R08: 0000000000000178 R09: 
ffff89763e407800
  | [  350.868859] R10: 00000000000004c4 R11: ffff9a958cce89c7 R12: 
ffff897607afb0b0
  | [  350.876039] R13: ffff897605c85580 R14: ffff8976205fbe00 R15: 
ffff89762688b400
  | [  350.883219] FS:  0000000000000000(0000) GS:ffff89763ec00000(0000) 
knlGS:0000000000000000
  | [  350.891358] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  | [  350.897138] CR2: 0000000000000008 CR3: 0000001fd7914000 CR4: 
0000000000340ee0
  | [  350.904319] Call Trace:
  | [  350.906787]  <IRQ>
  | [  350.908824]  tcp_v6_syn_recv_sock+0x8d/0x710
  | [  350.913259]  ? ip6_route_output_flags_noref+0xd0/0x110
  | [  350.918435]  tcp_get_cookie_sock+0x48/0x140
  | [  350.922688]  cookie_v6_check+0x5a2/0x700
  | [  350.926714]  tcp_v6_do_rcv+0x36c/0x3e0
  | [  350.930589]  ? tcp_v6_do_rcv+0x36c/0x3e0
  | [  350.934589]  tcp_v6_rcv+0xa16/0xa60
  | [  350.938102]  ip6_protocol_deliver_rcu+0xd8/0x4d0
  | [  350.942750]  ip6_input+0x41/0xb0
  | [  350.946000]  ip6_sublist_rcv_finish+0x42/0x60
  | [  350.950385]  ip6_sublist_rcv+0x235/0x260
  | [  350.954333]  ? __netif_receive_skb_core+0x19d/0xc60
  | [  350.959245]  ipv6_list_rcv+0x110/0x140
  | [  350.963018]  __netif_receive_skb_list_core+0x157/0x260
  | [  350.968192]  ? build_skb+0x17/0x80
  | [  350.971615]  netif_receive_skb_list_internal+0x187/0x2a0
  | [  350.976961]  gro_normal_list.part.131+0x1e/0x40
  | [  350.981519]  napi_complete_done+0x94/0x120
  | [  350.985700]  mlx5e_napi_poll+0x178/0x630 [mlx5_core]
  | [  350.990697]  net_rx_action+0x140/0x3e0
  | [  350.994475]  __do_softirq+0xe4/0x2da
  | [  350.998079]  irq_exit+0xae/0xb0
  | [  351.001239]  do_IRQ+0x59/0xe0
  | [  351.004228]  common_interrupt+0xf/0xf
  | [  351.007913]  </IRQ>
  | [  351.010029] RIP: 0010:cpuidle_enter_state+0xbc/0x440
  | [  351.015023] Code: ff e8 b8 ca 80 ff 80 7d d3 00 74 17 9c 58 0f 1f 44 00 
00 f6 c4 02 0f 85 54 03 00 00 31 ff e8 4b 4f 87 ff fb 66 0f 1f 44 00 00 <45> 85 
ed 0f 88 1a 03 00 00 4c 2b 7d c8 48 ba cf f7 53 e3 a5 9b c4
  | [  351.033952] RSP: 0018:ffff9a958026fe48 EFLAGS: 00000246 ORIG_RAX: 
ffffffffffffffd6
  | [  351.041633] RAX: ffff89763ec2fe00 RBX: ffffffff84b66b40 RCX: 
000000000000001f
  | [  351.048816] RDX: 00000051abe96150 RSI: 000000002abf3234 RDI: 
0000000000000000
  | [  351.055997] RBP: ffff9a958026fe88 R08: 0000000000000002 R09: 
000000000002f680
  | [  351.063176] R10: ffff9a958026fe18 R11: 0000000000000115 R12: 
ffff8976274c3800
  | [  351.070355] R13: 0000000000000001 R14: ffffffff84b66bb8 R15: 
00000051abe96150
  | [  351.077540]  ? cpuidle_enter_state+0x98/0x440
  | [  351.081930]  ? menu_select+0x377/0x600
  | [  351.085706]  cpuidle_enter+0x2e/0x40
  | [  351.089310]  call_cpuidle+0x23/0x40
  | [  351.092821]  do_idle+0x1f6/0x270
  | [  351.096069]  cpu_startup_entry+0x1d/0x20
  | [  351.100024]  start_secondary+0x166/0x1c0
  | [  351.103977]  secondary_startup_64+0xa4/0xb0
  | [  351.108186] Modules linked in: binfmt_misc bonding nls_iso8859_1 
ipmi_ssif edac_mce_amd kvm_amd kvm hpilo ccp ipmi_si ipmi_devintf 
ipmi_msghandler acpi_tad k10temp mac_hid acpi_power_meter sch_fq tcp_bbr 
ib_iser rdma_cm iw_cm ib_cm iscsi_tcp libiscsi_tcp libiscsi 
scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 
raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq 
libcrc32c raid0 multipath linear mlx5_ib raid1 ses enclosure ib_uverbs ib_core 
mgag200 drm_vram_helper ttm drm_kms_helper syscopyarea crct10dif_pclmul 
sysfillrect mlx5_core crc32_pclmul sysimgblt smartpqi fb_sys_fops uas 
ghash_clmulni_intel aesni_intel crypto_simd igb pci_hyperv_intf cryptd 
glue_helper usb_storage dca tls drm i2c_algo_bit scsi_transport_sas mlxfw nvme 
i2c_piix4 nvme_core wmi
  | [  351.180156] CR2: 0000000000000008
  | [  351.183629] ---[ end trace 23210cdf0c6d5851 ]---
  | [  351.322276] RIP: 0010:tcp_create_openreq_child+0x2e1/0x3e0
  | [  351.327974] Code: 08 00 00 41 8b 84 24 18 01 00 00 48 c7 83 80 08 00 00 
00 00 00 00 4c 89 e6 4c 89 ef 89 83 c4 05 00 00 49 8b 84 24 f8 00 00 00 <48> 8b 
40 08 e8 96 28 42 00 48 85 c0 0f b7 83 68 05 00 00 74 0a 83
  | [  351.346878] RSP: 0018:ffff9a958cce8858 EFLAGS: 00010246
  | [  351.352166] RAX: 0000000000000000 RBX: ffff897618739c80 RCX: 
0000000000000007
  | [  351.359348] RDX: 0000000000000020 RSI: ffff897607afb0b0 RDI: 
ffff897605c85580
  | [  351.366526] RBP: ffff9a958cce8878 R08: 0000000000000178 R09: 
ffff89763e407800
  | [  351.373705] R10: 00000000000004c4 R11: ffff9a958cce89c7 R12: 
ffff897607afb0b0
  | [  351.380886] R13: ffff897605c85580 R14: ffff8976205fbe00 R15: 
ffff89762688b400
  | [  351.388065] FS:  0000000000000000(0000) GS:ffff89763ec00000(0000) 
knlGS:0000000000000000
  | [  351.396203] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  | [  351.401982] CR2: 0000000000000008 CR3: 0000001fd7914000 CR4: 
0000000000340ee0
  | [  351.409162] Kernel panic - not syncing: Fatal exception in interrupt
  | [  351.415613] Kernel Offset: 0x2000000 from 0xffffffff81000000 (relocation 
range: 0xffffffff80000000-0xffffffffbfffffff)
  | [  351.437793] ---[ end Kernel panic - not syncing: Fatal exception in 
interrupt ]---

  Per ~IS-Outage on Mattermost, tried various other older kernels and it
  seems -121 is working fine so looks to be introduced in -122.

  | [hloeung@banjo ~]$ lsb_release -a
  | No LSB modules are available.
  | Distributor ID: Ubuntu
  | Description:    Ubuntu 18.04.6 LTS
  | Release:        18.04
  | Codename:       bionic
  --- 
  ProblemType: Bug
  AlsaDevices:
   total 0
   crw-rw---- 1 root audio 116,  1 Jul 14 03:13 seq
   crw-rw---- 1 root audio 116, 33 Jul 14 03:13 timer
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
  ApportVersion: 2.20.9-0ubuntu7.28
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 
'arecord'
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', 
'/dev/snd/timer'] failed with exit code 1:
  DistroRelease: Ubuntu 18.04
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
  MachineType: HPE ProLiant DL385 Gen10
  Package: linux-hwe-5.4
  PciMultimedia:
   
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.utf8
   SHELL=/bin/bash
  ProcFB: 0 mgag200drmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-121-generic 
root=UUID=a5a2675d-dc52-48f0-9273-2c6dadac446f ro console=ttyS0,115200 nosplash
  ProcVersionSignature: Ubuntu 5.4.0-121.137~18.04.1-generic 5.4.189
  RelatedPackageVersions:
   linux-restricted-modules-5.4.0-121-generic N/A
   linux-backports-modules-5.4.0-121-generic  N/A
   linux-firmware                             1.173.21
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
  Tags:  bionic
  Uname: Linux 5.4.0-121-generic x86_64
  UpgradeStatus: Upgraded to bionic on 2019-12-16 (940 days ago)
  UserGroups: adm
  _MarkForUpload: True
  dmi.bios.date: 02/10/2022
  dmi.bios.vendor: HPE
  dmi.bios.version: A40
  dmi.board.name: ProLiant DL385 Gen10
  dmi.board.vendor: HPE
  dmi.chassis.type: 23
  dmi.chassis.vendor: HPE
  dmi.modalias: 
dmi:bvnHPE:bvrA40:bd02/10/2022:svnHPE:pnProLiantDL385Gen10:pvr:rvnHPE:rnProLiantDL385Gen10:rvr:cvnHPE:ct23:cvr:
  dmi.product.family: ProLiant
  dmi.product.name: ProLiant DL385 Gen10
  dmi.product.sku: 878615-B21
  dmi.sys.vendor: HPE

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