Ubuntu18.04[P9, WSP]: While running ltp kernel_misc test hitting cpu warn_on on unregister_blkdev+0xac/0x300
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
The Ubuntu-power-systems project |
Fix Released
|
High
|
Canonical Kernel Team | ||
linux (Ubuntu) |
Fix Released
|
High
|
Canonical Kernel Team | ||
Bionic |
Fix Released
|
High
|
Canonical Kernel Team |
Bug Description
== Comment: #0 - Praveen K. Pandey <email address hidden> - 2018-03-06 05:19:10 ==
Problem Description :
While running ltp kernel_misc test hitting cpu warn_on on unregister_blkdev
Reproducible Step:
1- Install WSP system with Ubuntu18.04
2- get ltp from github
a- git clone https:/
b-cd ltp
c- make autotools
d- ./configure
e- make
f- make install
g- cd /opt/ltp
h- ./runltp -f kernel_misc
LOG:
[87195.381004] WARNING: CPU: 8 PID: 25873 at /build/
[87195.381166] Modules linked in: ltp_block_dev(OE) sctp nls_iso8859_1 ntfs btrfs zstd_compress xor raid6_pq xfs libcrc32c idt_89hpesx ofpart at24 uio_pdrv_genirq cmdlinepart powernv_flash ibmpowernv vmx_crypto mtd ipmi_powernv ipmi_devintf ipmi_msghandler crct10dif_vpmsum opal_prd uio sch_fq_codel ip_tables x_tables autofs4 ast i2c_algo_bit ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ahci crc32c_vpmsum drm tg3 libahci [last unloaded: ltp_fw_load]
[87195.381750] CPU: 8 PID: 25873 Comm: block_dev Tainted: G OE 4.15.0-10-generic #11-Ubuntu
[87195.381869] NIP: c00000000069808c LR: c00000000069803c CTR: c000000000697fe0
[87195.381967] REGS: c000001cf0bf3970 TRAP: 0700 Tainted: G OE (4.15.0-10-generic)
[87195.382078] MSR: 9000000000029033 <SF,HV,
[87195.382177] CFAR: c00000000069805c SOFTE: 1
[87195.382177] GPR00: c00000000069803c c000001cf0bf3bf0 c0000000016ea600 0000000000000000
[87195.382177] GPR04: c008000019e113d8 000000000000000d 00000000636f6c62 c000001cee876a00
[87195.382177] GPR08: c000000001a0f4b8 0000000000000000 0000000000000000 c008000019e111b8
[87195.382177] GPR12: c000000000697fe0 c00000000fa85800 0000000000000000 0000000000000000
[87195.382177] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[87195.382177] GPR20: 000007399d9b8c10 000007399d9b8c28 00007fffd61064a4 000007399d9b8c50
[87195.382177] GPR24: 000007399d9b8cf0 000007399d9d0010 c000001cf0bf3e00 00000000000000fc
[87195.382177] GPR28: c008000019e113d8 c0000000015e2a60 0000000000000000 0000000000000000
[87195.383098] NIP [c00000000069808c] unregister_
[87195.383180] LR [c00000000069803c] unregister_
[87195.383266] Call Trace:
[87195.383302] [c000001cf0bf3bf0] [c00000000069803c] unregister_
[87195.383424] [c000001cf0bf3c30] [c008000019e10790] sys_tcase+
[87195.383542] [c000001cf0bf3ce0] [c0000000008530dc] dev_attr_
[87195.383628] [c000001cf0bf3d00] [c00000000049a6b4] sysfs_kf_
[87195.383726] [c000001cf0bf3d20] [c0000000004993ac] kernfs_
[87195.383824] [c000001cf0bf3d70] [c0000000003cf8dc] __vfs_write+
[87195.383919] [c000001cf0bf3d90] [c0000000003cfb38] vfs_write+
[87195.384009] [c000001cf0bf3de0] [c0000000003cfe58] SyS_write+
[87195.384103] [c000001cf0bf3e30] [c00000000000b184] system_
[87195.384196] Instruction dump:
[87195.384241] 419e0030 812a0008 7f89f000 409e0018 48000144 813f0008 7f89f040 419e0058
[87195.384347] 7feafb78 ebea0000 2fbf0000 409effe8 <0fe00000> 7fa3eb78 3be00000 48668431
[87195.384459] ---[ end trace fdc18fb4b5cc1498 ]---
Regards
Praveen
tags: | added: architecture-ppc64le bugnameltc-165381 severity-high targetmilestone-inin--- |
Changed in ubuntu: | |
assignee: | nobody → Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) |
affects: | ubuntu → linux (Ubuntu) |
tags: | added: kernel-da-key |
Changed in ubuntu-power-systems: | |
importance: | Undecided → High |
Changed in ubuntu-power-systems: | |
assignee: | nobody → Canonical Kernel Team (canonical-kernel-team) |
tags: | added: triage-g |
Changed in linux (Ubuntu): | |
assignee: | Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) → Canonical Kernel Team (canonical-kernel-team) |
Changed in ubuntu-power-systems: | |
status: | New → Triaged |
Changed in ubuntu-power-systems: | |
status: | Triaged → Incomplete |
Changed in ubuntu-power-systems: | |
status: | Incomplete → Fix Committed |
tags: | added: cscc |
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/KernelMainl ineBuilds . Please test the latest v4.16 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/ v4.16-rc4