[Bug 1805655] Re: BUG: unable to handle kernel NULL pointer dereference at 0000000000000008

Did this issue start happening after an update/upgrade? Was there a
prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.20 kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as
"Confirmed".


Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.20-rc6

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https://bugs.launchpad.net/bugs/1805655

Title:
BUG: unable to handle kernel NULL pointer dereference at
0000000000000008

Status in linux package in Ubuntu:
Confirmed

Bug description:
[77211.421509] BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
[77211.422467] IP: process_one_work+0x2e/0x410
[77211.422970] PGD 0 P4D 0
[77211.423278] Oops: 0000 [#1] SMP PTI
[77211.423699] Modules linked in: binfmt_misc dccp_diag dccp udp_diag unix_diag af_packet_diag netlink_diag tcp_diag inet_diag xt_multiport iptable_filter ip_tables 8021q garp mrp stp llc bonding ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 xt_hl ip6t_rt intel_rapl skx_edac x86_pkg_temp_thermal coretemp kvm_intel kvm irqbypass nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT nf_reject_ipv4 ipmi_si nf_log_ipv4 nf_log_common xt_LOG intel_cstate xt_limit input_leds joydev xt_tcpudp ipmi_devintf intel_rapl_perf xt_addrtype ipmi_msghandler shpchp lpc_ich mei_me mei ioatdma dca mac_hid acpi_power_meter nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack ip6table_filter ib_iser rdma_cm iw_cm ib_cm ib_core ip6_tables iscsi_tcp libiscsi_tcp libiscsi nf_conntrack_netbios_ns nf_conntrack_broadcast scsi_transport_iscsi nf_nat_ftp
[77211.432146] nf_nat nf_conntrack_ftp toa(OE) nf_conntrack lp parport x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic crct10dif_pclmul crc32_pclmul hibmc_drm ghash_clmulni_intel ttm usbhid pcbc drm_kms_helper hid syscopyarea ses aesni_intel sysfillrect enclosure aes_x86_64 sysimgblt i40e crypto_simd scsi_transport_sas fb_sys_fops glue_helper ptp megaraid_sas cryptd drm ahci pps_core libahci [last unloaded: ip_tables]
[77211.437829] CPU: 78 PID: 481 Comm: kworker/78:0 Tainted: G OE 4.15.0-21-shopee-generic #22~16.04.1+3
[77211.439038] Hardware name: Huawei 2288H V5/BC11SPSCB0, BIOS 0.62 03/26/2018
[77211.439865] RIP: 0010:process_one_work+0x2e/0x410
[77211.440417] RSP: 0000:ffffa81d0d7e3e88 EFLAGS: 00010046
[77211.441032] RAX: 0000000000000000 RBX: ffff8a2ebf5a2180 RCX: ffff8a2ebf5a8a60
[77211.441869] RDX: ffff8a2ebf5a8a60 RSI: ffffa81d2f38bb08 RDI: ffff8a2eb71a35c0
[77211.442710] RBP: ffffa81d0d7e3ec0 R08: fffffffffffffffc R09: 0000000000000003
[77211.443547] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8a2ebf5a2180
[77211.444383] R13: ffff8a2ebf5a2180 R14: 0000000000000000 R15: ffff8a2eb71a35c0
[77211.445222] FS: 0000000000000000(0000) GS:ffff8a2ebf580000(0000) knlGS:0000000000000000
[77211.446175] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[77211.446850] CR2: 00000000000000b0 CR3: 0000003eb220a003 CR4: 00000000007606e0
[77211.447688] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[77211.448525] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[77211.475504] PKRU: 55555554
[77211.502040] Call Trace:
[77211.528218] worker_thread+0x253/0x410
[77211.554162] kthread+0x121/0x140
[77211.579749] ? process_one_work+0x410/0x410
[77211.605690] ? kthread_create_worker_on_cpu+0x70/0x70
[77211.631715] ret_from_fork+0x35/0x40
[77211.657159] Code: 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 10 48 8b 06 4c 8b 6f 48 49 89 c6 45 30 f6 a8 04 b8 00 00 00 00 4c 0f 44 f0 <49> 8b 46 08 44 8b b8 00 01 00 00 41 83 e7 20 41 f6 45 10 04 75
[77211.733169] RIP: process_one_work+0x2e/0x410 RSP: ffffa81d0d7e3e88
[77211.758179] CR2: 0000000000000008
---
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Nov 28 20:27 seq
crw-rw---- 1 root audio 116, 33 Nov 28 20:27 timer
AplayDevices: Error: [Errno 2] No such file or directory
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
DistroRelease: Ubuntu 16.04
HibernationDevice: RESUME=UUID=c153c4f5-1fb0-4da5-9bb4-c04f794dc70c
InstallationDate: Installed on 2018-08-23 (97 days ago)
InstallationMedia: Ubuntu-Server 16.04.4 LTS "Xenial Xerus" - Release amd64 (20180228)
IwConfig: Error: [Errno 2] No such file or directory
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 12d1:0003 Huawei Technologies Co., Ltd.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Huawei 2288H V5
Package: linux (not installed)
PciMultimedia:

ProcFB:
0 VESA VGA
1 hibmcdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-21-shopee-generic root=UUID=4fd1d040-bb02-47c5-8657-b898dde9cc78 ro crashkernel=512M
ProcVersionSignature: Ubuntu 4.15.0-21.22~16.04.1+3-generic 4.15.17
RelatedPackageVersions:
linux-restricted-modules-4.15.0-21-shopee-generic N/A
linux-backports-modules-4.15.0-21-shopee-generic N/A
linux-firmware 1.157.20
RfKill: Error: [Errno 2] No such file or directory
Tags: xenial
Uname: Linux 4.15.0-21-shopee-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

WifiSyslog:

_MarkForUpload: True
dmi.bios.date: 03/26/2018
dmi.bios.vendor: INSYDE Corp.
dmi.bios.version: 0.62
dmi.board.asset.tag: 18SVH1089
dmi.board.name: BC11SPSCB0
dmi.board.vendor: Huawei
dmi.board.version: V100R005
dmi.chassis.asset.tag: 18SVH1089
dmi.chassis.type: 17
dmi.chassis.vendor: Huawei
dmi.chassis.version: To be filled by O.E.M.
dmi.modalias: dmi:bvnINSYDECorp.:bvr0.62:bd03/26/2018:svnHuawei:pn2288HV5:pvrPurley:rvnHuawei:rnBC11SPSCB0:rvrV100R005:cvnHuawei:ct17:cvrTobefilledbyO.E.M.:
dmi.product.family: Type1Family
dmi.product.name: 2288H V5
dmi.product.version: Purley
dmi.sys.vendor: Huawei

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