Bug #1717443 “Call trace observed when running xfstests on btrfs...” : Bugs : linux package : Ubuntu

Bug Description

== Comment: #0 - Harish Sriram <> - 2017-07-21 00:34:58 ==
Problem Description
----------------------------
Call trace observed when running xfstests on btrfs filesystem

Environment
------------------
Kernel Build: 4.11.0-10-generic
System Name : ltc-boston124
Model : 9006-22C
Platform : PowerNV ( P9 )

Uname output
-------------------
# uname -a
Linux ltc-boston124 4.11.0-10-generic #15-Ubuntu SMP Thu Jun 29 15:02:54 UTC 2017 ppc64le ppc64le ppc64le GNU/Linux

Steps to reproduce:
----------------------------------------
1. Create a loop device with btrfs filesystem
2. git clone git://git.kernel.org/pub/scm/fs/xfs/xfstests-dev.git; cd xfstests-dev
3. make
4. Create a local.config for running with created loop device
5.. Run xfstests-dev test : ./check tests/btrfs/130

Dmesg:
----------
[Fri Jul 21 01:26:55 2017] INFO: rcu_sched self-detected stall on CPU
[Fri Jul 21 01:26:55 2017] 4-...: (210013 ticks this GP) idle=6db/140000000000001/0 softirq=18227470/18227470 fqs=104791
[Fri Jul 21 01:26:55 2017] (t=210039 jiffies g=10179019 c=10179018 q=1388)
[Fri Jul 21 01:26:55 2017] Task dump for CPU 4:
[Fri Jul 21 01:26:55 2017] btrfs R running task 0 24224 19847 0x00042006
[Fri Jul 21 01:26:55 2017] Call Trace:
[Fri Jul 21 01:26:55 2017] [c0002003dd62efb0] [c0000000001240dc] sched_show_task+0xcc/0x150 (unreliable)
[Fri Jul 21 01:26:55 2017] [c0002003dd62f020] [c000000000b80d20] rcu_dump_cpu_stacks+0xd0/0x134
[Fri Jul 21 01:26:55 2017] [c0002003dd62f070] [c000000000177214] rcu_check_callbacks+0x9f4/0xb40
[Fri Jul 21 01:26:55 2017] [c0002003dd62f1a0] [c000000000180968] update_process_times+0x48/0x90
[Fri Jul 21 01:26:55 2017] [c0002003dd62f1d0] [c000000000197a70] tick_sched_handle.isra.7+0x30/0xb0
[Fri Jul 21 01:26:55 2017] [c0002003dd62f200] [c000000000197b54] tick_sched_timer+0x64/0xd0
[Fri Jul 21 01:26:55 2017] [c0002003dd62f240] [c000000000181408] __hrtimer_run_queues+0x108/0x390
[Fri Jul 21 01:26:55 2017] [c0002003dd62f2c0] [c000000000182458] hrtimer_interrupt+0xf8/0x330
[Fri Jul 21 01:26:55 2017] [c0002003dd62f390] [c000000000023dcc] __timer_interrupt+0x8c/0x270
[Fri Jul 21 01:26:55 2017] [c0002003dd62f3e0] [c0000000000241cc] timer_interrupt+0x9c/0xe0
[Fri Jul 21 01:26:55 2017] [c0002003dd62f410] [c0000000000090a4] decrementer_common+0x114/0x120
[Fri Jul 21 01:26:55 2017] --- interrupt: 901 at find_parent_nodes+0x97c/0x1680 [btrfs]
LR = find_parent_nodes+0x930/0x1680 [btrfs]
[Fri Jul 21 01:26:55 2017] [c0002003dd62f700] [c0080000571bcbfc] find_parent_nodes+0x874/0x1680 [btrfs] (unreliable)
[Fri Jul 21 01:26:55 2017] [c0002003dd62f840] [c0080000571bee64] iterate_extent_inodes+0x3ec/0x440 [btrfs]
[Fri Jul 21 01:26:55 2017] [c0002003dd62f960] [c0080000571ccddc] process_extent+0x804/0xc00 [btrfs]
[Fri Jul 21 01:26:55 2017] [c0002003dd62fa80] [c0080000571d06cc] changed_cb+0x574/0xe00 [btrfs]
[Fri Jul 21 01:26:55 2017] [c0002003dd62fb40] [c0080000571d1f74] btrfs_ioctl_send+0x101c/0x10e0 [btrfs]
[Fri Jul 21 01:26:55 2017] [c0002003dd62fc40] [c008000057186218] btrfs_ioctl+0x16e0/0x23f0 [btrfs]
[Fri Jul 21 01:26:55 2017] [c0002003dd62fd40] [c000000000372124] do_vfs_ioctl+0xd4/0x8c0
[Fri Jul 21 01:26:55 2017] [c0002003dd62fde0] [c0000000003729e4] SyS_ioctl+0xd4/0xf0
[Fri Jul 21 01:26:55 2017] [c0002003dd62fe30] [c00000000000b184] system_call+0x38/0xe0
[Fri Jul 21 01:27:58 2017] INFO: rcu_sched self-detected stall on CPU
[Fri Jul 21 01:27:58 2017] 4-...: (225763 ticks this GP) idle=6db/140000000000001/0 softirq=18227470/18227470 fqs=112651
[Fri Jul 21 01:27:58 2017] (t=225792 jiffies g=10179019 c=10179018 q=2542)
[Fri Jul 21 01:27:58 2017] Task dump for CPU 4:
[Fri Jul 21 01:27:58 2017] btrfs R running task 0 24224 19847 0x00042006
[Fri Jul 21 01:27:58 2017] Call Trace:
[Fri Jul 21 01:27:58 2017] [c0002003dd62efb0] [c0000000001240dc] sched_show_task+0xcc/0x150 (unreliable)
[Fri Jul 21 01:27:58 2017] [c0002003dd62f020] [c000000000b80d20] rcu_dump_cpu_stacks+0xd0/0x134
[Fri Jul 21 01:27:58 2017] [c0002003dd62f070] [c000000000177214] rcu_check_callbacks+0x9f4/0xb40
[Fri Jul 21 01:27:58 2017] [c0002003dd62f1a0] [c000000000180968] update_process_times+0x48/0x90
[Fri Jul 21 01:27:58 2017] [c0002003dd62f1d0] [c000000000197a70] tick_sched_handle.isra.7+0x30/0xb0
[Fri Jul 21 01:27:58 2017] [c0002003dd62f200] [c000000000197b54] tick_sched_timer+0x64/0xd0
[Fri Jul 21 01:27:58 2017] [c0002003dd62f240] [c000000000181408] __hrtimer_run_queues+0x108/0x390
[Fri Jul 21 01:27:58 2017] [c0002003dd62f2c0] [c000000000182458] hrtimer_interrupt+0xf8/0x330
[Fri Jul 21 01:27:58 2017] [c0002003dd62f390] [c000000000023dcc] __timer_interrupt+0x8c/0x270
[Fri Jul 21 01:27:58 2017] [c0002003dd62f3e0] [c0000000000241cc] timer_interrupt+0x9c/0xe0
[Fri Jul 21 01:27:58 2017] [c0002003dd62f410] [c0000000000090a4] decrementer_common+0x114/0x120
[Fri Jul 21 01:27:58 2017] --- interrupt: 901 at find_parent_nodes+0x97c/0x1680 [btrfs]
LR = find_parent_nodes+0x930/0x1680 [btrfs]
[Fri Jul 21 01:27:58 2017] [c0002003dd62f700] [c0080000571bcbfc] find_parent_nodes+0x874/0x1680 [btrfs] (unreliable)
[Fri Jul 21 01:27:58 2017] [c0002003dd62f840] [c0080000571bee64] iterate_extent_inodes+0x3ec/0x440 [btrfs]
[Fri Jul 21 01:27:58 2017] [c0002003dd62f960] [c0080000571ccddc] process_extent+0x804/0xc00 [btrfs]
[Fri Jul 21 01:27:58 2017] [c0002003dd62fa80] [c0080000571d06cc] changed_cb+0x574/0xe00 [btrfs]
[Fri Jul 21 01:27:58 2017] [c0002003dd62fb40] [c0080000571d1f74] btrfs_ioctl_send+0x101c/0x10e0 [btrfs]
[Fri Jul 21 01:27:58 2017] [c0002003dd62fc40] [c008000057186218] btrfs_ioctl+0x16e0/0x23f0 [btrfs]
[Fri Jul 21 01:27:58 2017] [c0002003dd62fd40] [c000000000372124] do_vfs_ioctl+0xd4/0x8c0
[Fri Jul 21 01:27:58 2017] [c0002003dd62fde0] [c0000000003729e4] SyS_ioctl+0xd4/0xf0
[Fri Jul 21 01:27:58 2017] [c0002003dd62fe30] [c00000000000b184] system_call+0x38/0xe0

System is hung till process is killed..

== Comment: #5 - Harish Sriram <> - 2017-07-24 01:22:02 ==
Issue is reproducible on 4.13-rc2 kernel from http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.13-rc2/

[ 901.860630] NMI backtrace for cpu 12
[ 901.860637] CPU: 12 PID: 21321 Comm: btrfs Not tainted 4.13.0-041300rc2-generic #201707232231
[ 901.860641] Call Trace:
[ 901.860657] [c000203965d2aeb0] [c000000000bab93c] dump_stack+0xb0/0xf4 (unreliable)
[ 901.860666] [c000203965d2aef0] [c000000000bb4a68] nmi_cpu_backtrace+0x208/0x210
[ 901.860673] [c000203965d2af80] [c000000000bb4c30] nmi_trigger_cpumask_backtrace+0x1c0/0x200
[ 901.860681] [c000203965d2b010] [c00000000002e2b8] arch_trigger_cpumask_backtrace+0x28/0x40
[ 901.860690] [c000203965d2b030] [c0000000001862f0] rcu_dump_cpu_stacks+0xf0/0x160
[ 901.860697] [c000203965d2b080] [c0000000001857d4] rcu_check_callbacks+0xa14/0xb60
[ 901.860705] [c000203965d2b1b0] [c000000000191528] update_process_times+0x48/0x90
[ 901.860713] [c000203965d2b1e0] [c0000000001a88bc] tick_sched_handle.isra.5+0x4c/0x80
[ 901.860721] [c000203965d2b200] [c0000000001a8950] tick_sched_timer+0x60/0xe0
[ 901.860728] [c000203965d2b240] [c000000000191fb8] __hrtimer_run_queues+0xf8/0x360
[ 901.860735] [c000203965d2b2c0] [c000000000192f0c] hrtimer_interrupt+0xfc/0x340
[ 901.860742] [c000203965d2b390] [c0000000000243e4] __timer_interrupt+0x94/0x270
[ 901.860750] [c000203965d2b3e0] [c000000000024804] timer_interrupt+0xa4/0xe0
[ 901.860757] [c000203965d2b410] [c000000000008f74] decrementer_common+0x114/0x120
[ 901.860858] --- interrupt: 901 at find_parent_nodes+0x97c/0x1680 [btrfs]
LR = find_parent_nodes+0x930/0x1680 [btrfs]
[ 901.860905] [c000203965d2b700] [c00800000fd2f6fc] find_parent_nodes+0x874/0x1680 [btrfs] (unreliable)
[ 901.860958] [c000203965d2b840] [c00800000fd31964] iterate_extent_inodes+0x3ec/0x440 [btrfs]
[ 901.861006] [c000203965d2b960] [c00800000fd4047c] process_extent+0x904/0xce0 [btrfs]
[ 901.861054] [c000203965d2ba80] [c00800000fd4357c] changed_cb+0x574/0xe00 [btrfs]
[ 901.861104] [c000203965d2bb40] [c00800000fd45548] btrfs_ioctl_send+0xea0/0x1070 [btrfs]
[ 901.861156] [c000203965d2bc40] [c00800000fcf85b8] btrfs_ioctl+0x1580/0x2470 [btrfs]
[ 901.861164] [c000203965d2bd40] [c00000000038cd74] do_vfs_ioctl+0xd4/0x8d0
[ 901.861171] [c000203965d2bde0] [c00000000038d644] SyS_ioctl+0xd4/0x130
[ 901.861179] [c000203965d2be30] [c00000000000b184] system_call+0x58/0x6c

Thanks,
Harish

== Comment: #9 - Victor Aoqui <> - 2017-09-14 14:20:32 ==
Problem Description
----------------------------
Call trace observed when running xfstests on btrfs filesystem

Environment
------------------
Kernel Build: 4.11.0-10-generic
System Name : ltc-boston124
Model : 9006-22C
Platform : PowerNV ( P9 )

Uname output
-------------------
# uname -a
Linux ltc-boston124 4.11.0-10-generic #15-Ubuntu SMP Thu Jun 29 15:02:54 UTC 2017 ppc64le ppc64le ppc64le GNU/Linux

System is hung till process is killed..

Tags: Edit Tag help

bugproxy (bugproxy) wrote on 2017-09-15: sosreport

sosreport Edit (13.2 MiB, application/x-xz)

Default Comment by Bridge

tags:	added: architecture-ppc64le bugnameltc-156897 severity-high targetmilestone-inin---
Changed in ubuntu:
assignee:	nobody → Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage)
affects:	ubuntu → linux (Ubuntu)

Andrew Cloke (andrew-cloke) on 2017-09-15

Changed in ubuntu-power-systems:
importance:	Undecided → High
assignee:	nobody → Canonical Kernel Team (canonical-kernel-team)

Joseph Salisbury (jsalisbury) wrote on 2017-09-18:

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 v4.14 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/v4.14-rc1/

Changed in linux (Ubuntu):
importance:	Undecided → High
status:	New → Incomplete
Changed in ubuntu-power-systems:
status:	New → Incomplete
tags:	added: kernel-da-key

Manoj Iyer (manjo) on 2017-09-25

Changed in linux (Ubuntu):
assignee:	Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) → Canonical Kernel Team (canonical-kernel-team)
tags:	added: triage-g

Po-Hsu Lin (cypressyew) wrote on 2017-10-12:

Similar bug 1718925

Po-Hsu Lin (cypressyew) wrote on 2017-11-01:

Hello Harish,

This test is known to be buggy, and is suggested to be skipped from upstream [1].
And with our colleague Colin's investigation suggests the same action too.

Therefore I will mark this bug as invalid.

Thank you.

[1] https://<email address hidden>/msg69094.html

Changed in ubuntu-power-systems:
status:	Incomplete → Invalid
Changed in linux (Ubuntu):
status:	Incomplete → Invalid

bugproxy (bugproxy) on 2017-11-29

tags:

added: targetmilestone-inin1710
removed: targetmilestone-inin---

Ubuntu
linux package

Call trace observed when running xfstests on btrfs filesystem

Bug Description

Other bug subscribers

Bug attachments

Ubuntulinux package

Call trace observed when running xfstests on btrfs filesystem

Bug Description

Other bug subscribers

Bug attachments

Ubuntu
linux package