Public bug reported:

dmesg output follows:
[476712.748600] mmc0: new ultra high speed SDR104 SDXC card at address aaaa
[476712.750392] mmcblk0: mmc0:aaaa SP64G 59.5 GiB 
[476712.761168]  mmcblk0: p1
[477821.312742] BUG: unable to handle kernel paging request at 0000000000003858
[477821.312771] IP: page_vma_mapped_walk+0x1e7/0x5a0
[477821.312782] PGD 0 
[477821.312783] P4D 0 

[477821.312800] Oops: 0000 [#1] SMP NOPTI
[477821.312810] Modules linked in: cdc_acm unix_diag af_packet_diag 
netlink_diag uas usb_storage mmc_block xfrm_user xfrm_algo xt_addrtype 
br_netfilter aufs sctp_diag sctp dccp_diag dccp tcp_diag udp_diag inet_diag ccm 
xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat 
nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack 
ipt_REJECT nf_reject_ipv4 xt_tcpudp joydev bridge stp llc ebtable_filter 
ebtables ip6table_filter ip6_tables iptable_filter rtsx_pci_ms 
snd_hda_codec_hdmi snd_soc_skl snd_soc_skl_ipc memstick rtsx_pci_sdmmc 
snd_hda_codec_conexant snd_hda_codec_generic snd_soc_sst_ipc snd_soc_sst_dsp 
snd_hda_ext_core snd_soc_sst_match snd_soc_core snd_compress ac97_bus 
snd_pcm_dmaengine snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm 
snd_seq_midi
[477821.312971]  snd_seq_midi_event arc4 snd_rawmidi intel_rapl 
x86_pkg_temp_thermal intel_powerclamp snd_seq kvm_intel binfmt_misc uvcvideo 
kvm videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 irqbypass nls_iso8859_1 
videobuf2_core crct10dif_pclmul videodev crc32_pclmul media ghash_clmulni_intel 
intel_cstate intel_rapl_perf snd_seq_device snd_timer iwlmvm mac80211 snd 
psmouse hp_wmi sparse_keymap e1000e ptp pps_core wmi_bmof iwlwifi soundcore 
cfg80211 idma64 virt_dma ahci mei_me rtsx_pci mei libahci intel_lpss_pci 
intel_pch_thermal i2c_hid hid intel_lpss_acpi intel_lpss hp_accel lis3lv02d 
input_polldev hp_wireless acpi_pad coretemp parport_pc ppdev lp parport 
ip_tables x_tables autofs4 dm_thin_pool dm_persistent_data dm_bio_prison 
dm_bufio af_alg dm_crypt raid10 raid456 libcrc32c async_raid6_recov
[477821.313150]  async_memcpy async_pq async_xor xor async_tx raid6_pq raid1 
raid0 multipath linear amdgpu amdkfd i915 amd_iommu_v2 radeon aesni_intel 
aes_x86_64 crypto_simd cryptd glue_helper ttm i2c_algo_bit drm_kms_helper 
input_leds nvme serio_raw syscopyarea sysfillrect sysimgblt nvme_core 
fb_sys_fops drm shpchp wmi pinctrl_sunrisepoint video pinctrl_intel mac_hid
[477821.313225] CPU: 1 PID: 54 Comm: kswapd0 Not tainted 4.13.0-46-generic 
#51-Ubuntu
[477821.313241] Hardware name: HP HP ZBook 14u G4/828C, BIOS P78 Ver. 01.18 
05/16/2018
[477821.313258] task: ffff977d1ba65f00 task.stack: ffffb97b01a9c000
[477821.313274] RIP: 0010:page_vma_mapped_walk+0x1e7/0x5a0
[477821.313287] RSP: 0018:ffffb97b01a9fa70 EFLAGS: 00010246
[477821.313300] RAX: 0000000000000000 RBX: ffffb97b01a9fab8 RCX: 
ffffb97b01a9fb98
[477821.313315] RDX: 0000000100003808 RSI: 0000000000003808 RDI: 
ffffebab8ff50980
[477821.313331] RBP: ffffb97b01a9faa0 R08: 000000000000000a R09: 
0000000000008ac4
[477821.313356] R10: 0000000000000000 R11: 0000000000000010 R12: 
ffffebab8ff50980
[477821.313384] R13: 0000000000000000 R14: 0000000100003808 R15: 
ffff977d01cfcec0
[477821.313402] FS:  0000000000000000(0000) GS:ffff977d2f480000(0000) 
knlGS:0000000000000000
[477821.313419] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[477821.313434] CR2: 0000000000003858 CR3: 000000010340a002 CR4: 
00000000003606e0
[477821.313450] Call Trace:
[477821.313460]  page_referenced_one+0xa1/0x1a0
[477821.313471]  rmap_walk_anon+0xfa/0x270
[477821.313482]  rmap_walk+0x48/0x60
[477821.313491]  page_referenced+0xdc/0x170
[477821.313501]  ? rmap_walk_anon+0x270/0x270
[477821.313512]  ? page_get_anon_vma+0x90/0x90
[477821.313527]  shrink_active_list+0x1d4/0x410
[477821.313539]  shrink_node_memcg+0x225/0x770
[477821.313550]  shrink_node+0xf7/0x300
[477821.313559]  ? shrink_node+0xf7/0x300
[477821.313569]  kswapd+0x2b4/0x730
[477821.313578]  kthread+0x128/0x140
[477821.313587]  ? mem_cgroup_shrink_node+0x190/0x190
[477821.313599]  ? kthread_create_on_node+0x70/0x70
[477821.313611]  ret_from_fork+0x1f/0x40
[477821.313620] Code: c3 48 85 c0 0f 85 7d fe ff ff e8 15 1f 01 00 85 c0 0f 85 
4c ff ff ff 4c 8b 73 10 48 8b 75 d0 4c 89 f0 48 c1 e8 27 25 ff 01 00 00 <48> 8b 
56 50 48 8b 3c c2 48 ba ff 0f 00 00 00 c0 ff ff 40 f6 c7 
[477821.313677] RIP: page_vma_mapped_walk+0x1e7/0x5a0 RSP: ffffb97b01a9fa70
[477821.313692] CR2: 0000000000003858
[477821.319563] ---[ end trace 5fdf55adc9c23577 ]---

Attempt to umount sdcard said: umount: /media/user/sdcard: target is busy.
Attempt to use sudo fuser -k -m /media/user/sdcard gave a reply: Killed
New lines appeared in dmesg:
[478635.472515] BUG: unable to handle kernel paging request at 000000000000822a
[478635.475689] IP: show_map_vma.isra.18+0x4f/0x200
[478635.478576] PGD 0 
[478635.478576] P4D 0 

[478635.485284] Oops: 0000 [#5] SMP NOPTI
[478635.487162] Modules linked in: cdc_acm unix_diag af_packet_diag 
netlink_diag uas usb_storage mmc_block xfrm_user xfrm_algo xt_addrtype 
br_netfilter aufs sctp_diag sctp dccp_diag dccp tcp_diag udp_diag inet_diag ccm 
xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat 
nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack 
ipt_REJECT nf_reject_ipv4 xt_tcpudp joydev bridge stp llc ebtable_filter 
ebtables ip6table_filter ip6_tables iptable_filter rtsx_pci_ms 
snd_hda_codec_hdmi snd_soc_skl snd_soc_skl_ipc memstick rtsx_pci_sdmmc 
snd_hda_codec_conexant snd_hda_codec_generic snd_soc_sst_ipc snd_soc_sst_dsp 
snd_hda_ext_core snd_soc_sst_match snd_soc_core snd_compress ac97_bus 
snd_pcm_dmaengine snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm 
snd_seq_midi
[478635.494035]  snd_seq_midi_event arc4 snd_rawmidi intel_rapl 
x86_pkg_temp_thermal intel_powerclamp snd_seq kvm_intel binfmt_misc uvcvideo 
kvm videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 irqbypass nls_iso8859_1 
videobuf2_core crct10dif_pclmul videodev crc32_pclmul media ghash_clmulni_intel 
intel_cstate intel_rapl_perf snd_seq_device snd_timer iwlmvm mac80211 snd 
psmouse hp_wmi sparse_keymap e1000e ptp pps_core wmi_bmof iwlwifi soundcore 
cfg80211 idma64 virt_dma ahci mei_me rtsx_pci mei libahci intel_lpss_pci 
intel_pch_thermal i2c_hid hid intel_lpss_acpi intel_lpss hp_accel lis3lv02d 
input_polldev hp_wireless acpi_pad coretemp parport_pc ppdev lp parport 
ip_tables x_tables autofs4 dm_thin_pool dm_persistent_data dm_bio_prison 
dm_bufio af_alg dm_crypt raid10 raid456 libcrc32c async_raid6_recov
[478635.500222]  async_memcpy async_pq async_xor xor async_tx raid6_pq raid1 
raid0 multipath linear amdgpu amdkfd i915 amd_iommu_v2 radeon aesni_intel 
aes_x86_64 crypto_simd cryptd glue_helper ttm i2c_algo_bit drm_kms_helper 
input_leds nvme serio_raw syscopyarea sysfillrect sysimgblt nvme_core 
fb_sys_fops drm shpchp wmi pinctrl_sunrisepoint video pinctrl_intel mac_hid
[478635.503483] CPU: 2 PID: 392 Comm: fuser Tainted: G      D         
4.13.0-46-generic #51-Ubuntu
[478635.505081] Hardware name: HP HP ZBook 14u G4/828C, BIOS P78 Ver. 01.18 
05/16/2018
[478635.506718] task: ffff977c8bc117c0 task.stack: ffffb97b0a3a4000
[478635.508361] RIP: 0010:show_map_vma.isra.18+0x4f/0x200
[478635.510008] RSP: 0018:ffffb97b0a3a7df8 EFLAGS: 00010246
[478635.511667] RAX: 000000000000820a RBX: ffff977d1837f4b0 RCX: 
00000000000001b7
[478635.513284] RDX: 000000000000820a RSI: ffffffff9ba44c00 RDI: 
ffff977d1837f4b0
[478635.514880] RBP: ffffb97b0a3a7e28 R08: 0000000000001000 R09: 
00000000000001b7
[478635.516470] R10: 0000000000000000 R11: ffff977cbb3ad1b5 R12: 
0000000008000070
[478635.518005] R13: ffff977cdd36ae00 R14: 000000000000820a R15: 
ffff977cdd36ae00
[478635.519512] FS:  00007f7b7af2e500(0000) GS:ffff977d2f500000(0000) 
knlGS:0000000000000000
[478635.520987] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[478635.522432] CR2: 000000000000822a CR3: 000000016ff64004 CR4: 
00000000003606e0
[478635.523845] Call Trace:
[478635.525237]  show_pid_map+0x17/0x40
[478635.526594]  seq_read+0x316/0x420
[478635.527908]  __vfs_read+0x1b/0x40
[478635.529260]  vfs_read+0x8e/0x130
[478635.530556]  SyS_read+0x55/0xc0
[478635.531899]  entry_SYSCALL_64_fastpath+0x24/0xab
[478635.533196] RIP: 0033:0x7f7b7aa68021
[478635.534515] RSP: 002b:00007fff94ceef28 EFLAGS: 00000246 ORIG_RAX: 
0000000000000000
[478635.535827] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 
00007f7b7aa68021
[478635.537148] RDX: 0000000000000400 RSI: 0000562e98d9f370 RDI: 
0000000000000004
[478635.538441] RBP: 0000562e98db2500 R08: 0000000000000001 R09: 
0000000000000000
[478635.539702] R10: 00007f7b7af2e500 R11: 0000000000000246 R12: 
0000000000000000
[478635.540968] R13: 000000000000000c R14: 0000562e977eba89 R15: 
0000562e977eba8c
[478635.542165] Code: 8b 46 40 4c 8b 66 50 4d 85 f6 48 89 45 d0 0f 84 7a 01 00 
00 ba 2a 01 00 00 48 c7 c6 00 4c a4 9b 48 89 df e8 b4 73 f2 ff 49 89 c6 <48> 8b 
40 20 4c 8b 93 98 00 00 00 48 8b 50 28 4c 8b 78 40 49 c1 
[478635.543435] RIP: show_map_vma.isra.18+0x4f/0x200 RSP: ffffb97b0a3a7df8
[478635.544620] CR2: 000000000000822a
[478635.545783] ---[ end trace 5fdf55adc9c2357b ]---

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: xorg 1:7.7+19ubuntu3
ProcVersionSignature: Ubuntu 4.13.0-46.51-generic 4.13.16
Uname: Linux 4.13.0-46-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.9
Architecture: amd64
CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: KDE
Date: Wed Jul 25 23:14:25 2018
DistUpgraded: 2018-01-11 15:28:39,250 DEBUG Running PostInstallScript: 
'./xorg_fix_proprietary.py'
DistroCodename: artful
DistroVariant: kubuntu
ExtraDebuggingInterest: I just need to know a workaround
GraphicsCard:
 Intel Corporation HD Graphics 620 [8086:5916] (rev 02) (prog-if 00 [VGA 
controller])
   Subsystem: Hewlett-Packard Company HD Graphics 620 [103c:828c]
 Advanced Micro Devices, Inc. [AMD/ATI] Opal XT [Radeon R7 M265] [1002:6604] 
(rev 81) (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Opal XT [Radeon R7 M265] [103c:8290]
InstallationDate: Installed on 2018-01-11 (195 days ago)
InstallationMedia: Kubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 002: ID 04f2:b5ae Chicony Electronics Co., Ltd 
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: HP HP ZBook 14u G4
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-46-generic.efi.signed 
root=/dev/mapper/dell--vg-dell--root ro radeon.runpm=0 quiet splash nopti 
noibrs nospectre_v2 resume=/dev/dell-vg/dell-swap
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to artful on 2018-01-11 (195 days ago)
dmi.bios.date: 05/16/2018
dmi.bios.vendor: HP
dmi.bios.version: P78 Ver. 01.18
dmi.board.name: 828C
dmi.board.vendor: HP
dmi.board.version: KBC Version 45.41
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.modalias: 
dmi:bvnHP:bvrP78Ver.01.18:bd05/16/2018:svnHP:pnHPZBook14uG4:pvr:rvnHP:rn828C:rvrKBCVersion45.41:cvnHP:ct10:cvr:
dmi.product.family: 103C_5336AN HP EliteBook
dmi.product.name: HP ZBook 14u G4
dmi.sys.vendor: HP
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.83-1
version.libgl1-mesa-dri: libgl1-mesa-dri 17.2.8-0ubuntu0~17.10.1
version.libgl1-mesa-glx: libgl1-mesa-glx 17.2.8-0ubuntu0~17.10.1
version.xserver-xorg-core: xserver-xorg-core 2:1.19.5-0ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.10.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20170309-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2

** Affects: linux-signed (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug artful kubuntu

** Attachment removed: "XorgLog.txt"
   
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1783643/+attachment/5167806/+files/XorgLog.txt

** Attachment removed: "xdpyinfo.txt"
   
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1783643/+attachment/5167809/+files/xdpyinfo.txt

** Attachment removed: "Xrandr.txt"
   
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1783643/+attachment/5167808/+files/Xrandr.txt

** Attachment removed: "XorgLogOld.txt"
   
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1783643/+attachment/5167807/+files/XorgLogOld.txt

** Attachment removed: "ProcEnviron.txt"
   
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1783643/+attachment/5167802/+files/ProcEnviron.txt

** Package changed: xorg (Ubuntu) => linux-signed (Ubuntu)

** Attachment removed: "ProcCpuinfoMinimal.txt"
   
https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1783643/+attachment/5167801/+files/ProcCpuinfoMinimal.txt

** Attachment removed: "BootLog.txt"
   
https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1783643/+attachment/5167795/+files/BootLog.txt

** Attachment removed: "Dependencies.txt"
   
https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1783643/+attachment/5167797/+files/Dependencies.txt

** Attachment removed: "DpkgLog.txt"
   
https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1783643/+attachment/5167798/+files/DpkgLog.txt

** Attachment removed: "CurrentDmesg.txt"
   
https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1783643/+attachment/5167796/+files/CurrentDmesg.txt

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1783643

Title:
  System was stuttering during intensive IO on SD card

Status in linux-signed package in Ubuntu:
  New

Bug description:
  dmesg output follows:
  [476712.748600] mmc0: new ultra high speed SDR104 SDXC card at address aaaa
  [476712.750392] mmcblk0: mmc0:aaaa SP64G 59.5 GiB 
  [476712.761168]  mmcblk0: p1
  [477821.312742] BUG: unable to handle kernel paging request at 
0000000000003858
  [477821.312771] IP: page_vma_mapped_walk+0x1e7/0x5a0
  [477821.312782] PGD 0 
  [477821.312783] P4D 0 

  [477821.312800] Oops: 0000 [#1] SMP NOPTI
  [477821.312810] Modules linked in: cdc_acm unix_diag af_packet_diag 
netlink_diag uas usb_storage mmc_block xfrm_user xfrm_algo xt_addrtype 
br_netfilter aufs sctp_diag sctp dccp_diag dccp tcp_diag udp_diag inet_diag ccm 
xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat 
nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack 
ipt_REJECT nf_reject_ipv4 xt_tcpudp joydev bridge stp llc ebtable_filter 
ebtables ip6table_filter ip6_tables iptable_filter rtsx_pci_ms 
snd_hda_codec_hdmi snd_soc_skl snd_soc_skl_ipc memstick rtsx_pci_sdmmc 
snd_hda_codec_conexant snd_hda_codec_generic snd_soc_sst_ipc snd_soc_sst_dsp 
snd_hda_ext_core snd_soc_sst_match snd_soc_core snd_compress ac97_bus 
snd_pcm_dmaengine snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm 
snd_seq_midi
  [477821.312971]  snd_seq_midi_event arc4 snd_rawmidi intel_rapl 
x86_pkg_temp_thermal intel_powerclamp snd_seq kvm_intel binfmt_misc uvcvideo 
kvm videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 irqbypass nls_iso8859_1 
videobuf2_core crct10dif_pclmul videodev crc32_pclmul media ghash_clmulni_intel 
intel_cstate intel_rapl_perf snd_seq_device snd_timer iwlmvm mac80211 snd 
psmouse hp_wmi sparse_keymap e1000e ptp pps_core wmi_bmof iwlwifi soundcore 
cfg80211 idma64 virt_dma ahci mei_me rtsx_pci mei libahci intel_lpss_pci 
intel_pch_thermal i2c_hid hid intel_lpss_acpi intel_lpss hp_accel lis3lv02d 
input_polldev hp_wireless acpi_pad coretemp parport_pc ppdev lp parport 
ip_tables x_tables autofs4 dm_thin_pool dm_persistent_data dm_bio_prison 
dm_bufio af_alg dm_crypt raid10 raid456 libcrc32c async_raid6_recov
  [477821.313150]  async_memcpy async_pq async_xor xor async_tx raid6_pq raid1 
raid0 multipath linear amdgpu amdkfd i915 amd_iommu_v2 radeon aesni_intel 
aes_x86_64 crypto_simd cryptd glue_helper ttm i2c_algo_bit drm_kms_helper 
input_leds nvme serio_raw syscopyarea sysfillrect sysimgblt nvme_core 
fb_sys_fops drm shpchp wmi pinctrl_sunrisepoint video pinctrl_intel mac_hid
  [477821.313225] CPU: 1 PID: 54 Comm: kswapd0 Not tainted 4.13.0-46-generic 
#51-Ubuntu
  [477821.313241] Hardware name: HP HP ZBook 14u G4/828C, BIOS P78 Ver. 01.18 
05/16/2018
  [477821.313258] task: ffff977d1ba65f00 task.stack: ffffb97b01a9c000
  [477821.313274] RIP: 0010:page_vma_mapped_walk+0x1e7/0x5a0
  [477821.313287] RSP: 0018:ffffb97b01a9fa70 EFLAGS: 00010246
  [477821.313300] RAX: 0000000000000000 RBX: ffffb97b01a9fab8 RCX: 
ffffb97b01a9fb98
  [477821.313315] RDX: 0000000100003808 RSI: 0000000000003808 RDI: 
ffffebab8ff50980
  [477821.313331] RBP: ffffb97b01a9faa0 R08: 000000000000000a R09: 
0000000000008ac4
  [477821.313356] R10: 0000000000000000 R11: 0000000000000010 R12: 
ffffebab8ff50980
  [477821.313384] R13: 0000000000000000 R14: 0000000100003808 R15: 
ffff977d01cfcec0
  [477821.313402] FS:  0000000000000000(0000) GS:ffff977d2f480000(0000) 
knlGS:0000000000000000
  [477821.313419] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  [477821.313434] CR2: 0000000000003858 CR3: 000000010340a002 CR4: 
00000000003606e0
  [477821.313450] Call Trace:
  [477821.313460]  page_referenced_one+0xa1/0x1a0
  [477821.313471]  rmap_walk_anon+0xfa/0x270
  [477821.313482]  rmap_walk+0x48/0x60
  [477821.313491]  page_referenced+0xdc/0x170
  [477821.313501]  ? rmap_walk_anon+0x270/0x270
  [477821.313512]  ? page_get_anon_vma+0x90/0x90
  [477821.313527]  shrink_active_list+0x1d4/0x410
  [477821.313539]  shrink_node_memcg+0x225/0x770
  [477821.313550]  shrink_node+0xf7/0x300
  [477821.313559]  ? shrink_node+0xf7/0x300
  [477821.313569]  kswapd+0x2b4/0x730
  [477821.313578]  kthread+0x128/0x140
  [477821.313587]  ? mem_cgroup_shrink_node+0x190/0x190
  [477821.313599]  ? kthread_create_on_node+0x70/0x70
  [477821.313611]  ret_from_fork+0x1f/0x40
  [477821.313620] Code: c3 48 85 c0 0f 85 7d fe ff ff e8 15 1f 01 00 85 c0 0f 
85 4c ff ff ff 4c 8b 73 10 48 8b 75 d0 4c 89 f0 48 c1 e8 27 25 ff 01 00 00 <48> 
8b 56 50 48 8b 3c c2 48 ba ff 0f 00 00 00 c0 ff ff 40 f6 c7 
  [477821.313677] RIP: page_vma_mapped_walk+0x1e7/0x5a0 RSP: ffffb97b01a9fa70
  [477821.313692] CR2: 0000000000003858
  [477821.319563] ---[ end trace 5fdf55adc9c23577 ]---

  Attempt to umount sdcard said: umount: /media/user/sdcard: target is busy.
  Attempt to use sudo fuser -k -m /media/user/sdcard gave a reply: Killed
  New lines appeared in dmesg:
  [478635.472515] BUG: unable to handle kernel paging request at 
000000000000822a
  [478635.475689] IP: show_map_vma.isra.18+0x4f/0x200
  [478635.478576] PGD 0 
  [478635.478576] P4D 0 

  [478635.485284] Oops: 0000 [#5] SMP NOPTI
  [478635.487162] Modules linked in: cdc_acm unix_diag af_packet_diag 
netlink_diag uas usb_storage mmc_block xfrm_user xfrm_algo xt_addrtype 
br_netfilter aufs sctp_diag sctp dccp_diag dccp tcp_diag udp_diag inet_diag ccm 
xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat 
nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack 
ipt_REJECT nf_reject_ipv4 xt_tcpudp joydev bridge stp llc ebtable_filter 
ebtables ip6table_filter ip6_tables iptable_filter rtsx_pci_ms 
snd_hda_codec_hdmi snd_soc_skl snd_soc_skl_ipc memstick rtsx_pci_sdmmc 
snd_hda_codec_conexant snd_hda_codec_generic snd_soc_sst_ipc snd_soc_sst_dsp 
snd_hda_ext_core snd_soc_sst_match snd_soc_core snd_compress ac97_bus 
snd_pcm_dmaengine snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm 
snd_seq_midi
  [478635.494035]  snd_seq_midi_event arc4 snd_rawmidi intel_rapl 
x86_pkg_temp_thermal intel_powerclamp snd_seq kvm_intel binfmt_misc uvcvideo 
kvm videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 irqbypass nls_iso8859_1 
videobuf2_core crct10dif_pclmul videodev crc32_pclmul media ghash_clmulni_intel 
intel_cstate intel_rapl_perf snd_seq_device snd_timer iwlmvm mac80211 snd 
psmouse hp_wmi sparse_keymap e1000e ptp pps_core wmi_bmof iwlwifi soundcore 
cfg80211 idma64 virt_dma ahci mei_me rtsx_pci mei libahci intel_lpss_pci 
intel_pch_thermal i2c_hid hid intel_lpss_acpi intel_lpss hp_accel lis3lv02d 
input_polldev hp_wireless acpi_pad coretemp parport_pc ppdev lp parport 
ip_tables x_tables autofs4 dm_thin_pool dm_persistent_data dm_bio_prison 
dm_bufio af_alg dm_crypt raid10 raid456 libcrc32c async_raid6_recov
  [478635.500222]  async_memcpy async_pq async_xor xor async_tx raid6_pq raid1 
raid0 multipath linear amdgpu amdkfd i915 amd_iommu_v2 radeon aesni_intel 
aes_x86_64 crypto_simd cryptd glue_helper ttm i2c_algo_bit drm_kms_helper 
input_leds nvme serio_raw syscopyarea sysfillrect sysimgblt nvme_core 
fb_sys_fops drm shpchp wmi pinctrl_sunrisepoint video pinctrl_intel mac_hid
  [478635.503483] CPU: 2 PID: 392 Comm: fuser Tainted: G      D         
4.13.0-46-generic #51-Ubuntu
  [478635.505081] Hardware name: HP HP ZBook 14u G4/828C, BIOS P78 Ver. 01.18 
05/16/2018
  [478635.506718] task: ffff977c8bc117c0 task.stack: ffffb97b0a3a4000
  [478635.508361] RIP: 0010:show_map_vma.isra.18+0x4f/0x200
  [478635.510008] RSP: 0018:ffffb97b0a3a7df8 EFLAGS: 00010246
  [478635.511667] RAX: 000000000000820a RBX: ffff977d1837f4b0 RCX: 
00000000000001b7
  [478635.513284] RDX: 000000000000820a RSI: ffffffff9ba44c00 RDI: 
ffff977d1837f4b0
  [478635.514880] RBP: ffffb97b0a3a7e28 R08: 0000000000001000 R09: 
00000000000001b7
  [478635.516470] R10: 0000000000000000 R11: ffff977cbb3ad1b5 R12: 
0000000008000070
  [478635.518005] R13: ffff977cdd36ae00 R14: 000000000000820a R15: 
ffff977cdd36ae00
  [478635.519512] FS:  00007f7b7af2e500(0000) GS:ffff977d2f500000(0000) 
knlGS:0000000000000000
  [478635.520987] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  [478635.522432] CR2: 000000000000822a CR3: 000000016ff64004 CR4: 
00000000003606e0
  [478635.523845] Call Trace:
  [478635.525237]  show_pid_map+0x17/0x40
  [478635.526594]  seq_read+0x316/0x420
  [478635.527908]  __vfs_read+0x1b/0x40
  [478635.529260]  vfs_read+0x8e/0x130
  [478635.530556]  SyS_read+0x55/0xc0
  [478635.531899]  entry_SYSCALL_64_fastpath+0x24/0xab
  [478635.533196] RIP: 0033:0x7f7b7aa68021
  [478635.534515] RSP: 002b:00007fff94ceef28 EFLAGS: 00000246 ORIG_RAX: 
0000000000000000
  [478635.535827] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 
00007f7b7aa68021
  [478635.537148] RDX: 0000000000000400 RSI: 0000562e98d9f370 RDI: 
0000000000000004
  [478635.538441] RBP: 0000562e98db2500 R08: 0000000000000001 R09: 
0000000000000000
  [478635.539702] R10: 00007f7b7af2e500 R11: 0000000000000246 R12: 
0000000000000000
  [478635.540968] R13: 000000000000000c R14: 0000562e977eba89 R15: 
0000562e977eba8c
  [478635.542165] Code: 8b 46 40 4c 8b 66 50 4d 85 f6 48 89 45 d0 0f 84 7a 01 
00 00 ba 2a 01 00 00 48 c7 c6 00 4c a4 9b 48 89 df e8 b4 73 f2 ff 49 89 c6 <48> 
8b 40 20 4c 8b 93 98 00 00 00 48 8b 50 28 4c 8b 78 40 49 c1 
  [478635.543435] RIP: show_map_vma.isra.18+0x4f/0x200 RSP: ffffb97b0a3a7df8
  [478635.544620] CR2: 000000000000822a
  [478635.545783] ---[ end trace 5fdf55adc9c2357b ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: xorg 1:7.7+19ubuntu3
  ProcVersionSignature: Ubuntu 4.13.0-46.51-generic 4.13.16
  Uname: Linux 4.13.0-46-generic x86_64
  ApportVersion: 2.20.7-0ubuntu3.9
  Architecture: amd64
  CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: KDE
  Date: Wed Jul 25 23:14:25 2018
  DistUpgraded: 2018-01-11 15:28:39,250 DEBUG Running PostInstallScript: 
'./xorg_fix_proprietary.py'
  DistroCodename: artful
  DistroVariant: kubuntu
  ExtraDebuggingInterest: I just need to know a workaround
  GraphicsCard:
   Intel Corporation HD Graphics 620 [8086:5916] (rev 02) (prog-if 00 [VGA 
controller])
     Subsystem: Hewlett-Packard Company HD Graphics 620 [103c:828c]
   Advanced Micro Devices, Inc. [AMD/ATI] Opal XT [Radeon R7 M265] [1002:6604] 
(rev 81) (prog-if 00 [VGA controller])
     Subsystem: Hewlett-Packard Company Opal XT [Radeon R7 M265] [103c:8290]
  InstallationDate: Installed on 2018-01-11 (195 days ago)
  InstallationMedia: Kubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 002: ID 04f2:b5ae Chicony Electronics Co., Ltd 
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: HP HP ZBook 14u G4
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-46-generic.efi.signed 
root=/dev/mapper/dell--vg-dell--root ro radeon.runpm=0 quiet splash nopti 
noibrs nospectre_v2 resume=/dev/dell-vg/dell-swap
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: Upgraded to artful on 2018-01-11 (195 days ago)
  dmi.bios.date: 05/16/2018
  dmi.bios.vendor: HP
  dmi.bios.version: P78 Ver. 01.18
  dmi.board.name: 828C
  dmi.board.vendor: HP
  dmi.board.version: KBC Version 45.41
  dmi.chassis.type: 10
  dmi.chassis.vendor: HP
  dmi.modalias: 
dmi:bvnHP:bvrP78Ver.01.18:bd05/16/2018:svnHP:pnHPZBook14uG4:pvr:rvnHP:rn828C:rvrKBCVersion45.41:cvnHP:ct10:cvr:
  dmi.product.family: 103C_5336AN HP EliteBook
  dmi.product.name: HP ZBook 14u G4
  dmi.sys.vendor: HP
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.83-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 17.2.8-0ubuntu0~17.10.1
  version.libgl1-mesa-glx: libgl1-mesa-glx 17.2.8-0ubuntu0~17.10.1
  version.xserver-xorg-core: xserver-xorg-core 2:1.19.5-0ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.10.0-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20170309-0ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1783643/+subscriptions

-- 
Mailing list: https://launchpad.net/~desktop-packages
Post to     : desktop-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~desktop-packages
More help   : https://help.launchpad.net/ListHelp

Reply via email to