I got the same bug again. Here are the kernel messages:
[ 1450.993972] INFO: task systemd:1 blocked for more than 120 seconds.
[ 1451.000279] Tainted: P O 4.15.0-36-generic #39-Ubuntu
[ 1451.007094] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
[ 1451.014957] systemd D 0 1 0 0x00000000
[ 1451.014960] Call Trace:
[ 1451.014969] __schedule+0x291/0x8a0
[ 1451.014971] schedule+0x2c/0x80
[ 1451.014973] schedule_preempt_disabled+0xe/0x10
[ 1451.014974] __mutex_lock.isra.2+0x18c/0x4d0
[ 1451.014976] __mutex_lock_slowpath+0x13/0x20
[ 1451.014978] ? __mutex_lock_slowpath+0x13/0x20
[ 1451.014979] mutex_lock+0x2f/0x40
[ 1451.014982] proc_cgroup_show+0x4c/0x2a0
[ 1451.014985] proc_single_show+0x56/0x80
[ 1451.014988] seq_read+0xe5/0x430
[ 1451.014990] __vfs_read+0x1b/0x40
[ 1451.014991] vfs_read+0x8e/0x130
[ 1451.014992] SyS_read+0x55/0xc0
[ 1451.014995] do_syscall_64+0x73/0x130
[ 1451.014997] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[ 1451.014999] RIP: 0033:0x7fc9a5300081
[ 1451.015000] RSP: 002b:00007ffcdf16ab48 EFLAGS: 00000246 ORIG_RAX:
0000000000000000
[ 1451.015002] RAX: ffffffffffffffda RBX: 000055c5a2612290 RCX: 00007fc9a5300081
[ 1451.015003] RDX: 0000000000000400 RSI: 000055c5a269b4d0 RDI: 0000000000000026
[ 1451.015004] RBP: 0000000000000d68 R08: 0000000000000001 R09: 0000000000000000
[ 1451.015004] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc9a55d7760
[ 1451.015005] R13: 00007fc9a55d82a0 R14: 000055c5a2612290 R15: 00000000000007ff
[ 1451.015077] INFO: task systemd-journal:811 blocked for more than 120 seconds.
[ 1451.022239] Tainted: P O 4.15.0-36-generic #39-Ubuntu
[ 1451.029073] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
[ 1451.036938] systemd-journal D 0 811 1 0x00000120
[ 1451.036942] Call Trace:
[ 1451.036950] __schedule+0x291/0x8a0
[ 1451.036954] ? ___slab_alloc+0x20a/0x4b0
[ 1451.036956] schedule+0x2c/0x80
[ 1451.036957] schedule_preempt_disabled+0xe/0x10
[ 1451.036958] __mutex_lock.isra.2+0x18c/0x4d0
[ 1451.036960] __mutex_lock_slowpath+0x13/0x20
[ 1451.036962] ? __mutex_lock_slowpath+0x13/0x20
[ 1451.036963] mutex_lock+0x2f/0x40
[ 1451.036966] proc_cgroup_show+0x4c/0x2a0
[ 1451.036969] proc_single_show+0x56/0x80
[ 1451.036972] seq_read+0xe5/0x430
[ 1451.036975] __vfs_read+0x1b/0x40
[ 1451.036978] vfs_read+0x8e/0x130
[ 1451.036981] SyS_read+0x55/0xc0
[ 1451.036985] do_syscall_64+0x73/0x130
[ 1451.036988] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[ 1451.036991] RIP: 0033:0x7f331df97081
[ 1451.036993] RSP: 002b:00007ffd719a04c8 EFLAGS: 00000246 ORIG_RAX:
0000000000000000
[ 1451.036997] RAX: ffffffffffffffda RBX: 000056046305a6c0 RCX: 00007f331df97081
[ 1451.037000] RDX: 0000000000000400 RSI: 0000560463012a10 RDI: 000000000000001f
[ 1451.037001] RBP: 0000000000000d68 R08: 0000000000000001 R09: 0000000000000000
[ 1451.037003] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f331e26e760
[ 1451.037005] R13: 00007f331e26f2a0 R14: 000056046305a6c0 R15: 00000000000007ff
[ 1451.037029] INFO: task lxcfs:39982 blocked for more than 120 seconds.
[ 1451.043498] Tainted: P O 4.15.0-36-generic #39-Ubuntu
[ 1451.050308] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
[ 1451.058165] lxcfs D 0 39982 1 0x00000000
[ 1451.058167] Call Trace:
[ 1451.058172] __schedule+0x291/0x8a0
[ 1451.058174] schedule+0x2c/0x80
[ 1451.058175] schedule_preempt_disabled+0xe/0x10
[ 1451.058176] __mutex_lock.isra.2+0x18c/0x4d0
[ 1451.058178] __mutex_lock_slowpath+0x13/0x20
[ 1451.058179] ? __mutex_lock_slowpath+0x13/0x20
[ 1451.058180] mutex_lock+0x2f/0x40
[ 1451.058182] proc_cgroup_show+0x4c/0x2a0
[ 1451.058184] proc_single_show+0x56/0x80
[ 1451.058185] seq_read+0xe5/0x430
[ 1451.058187] __vfs_read+0x1b/0x40
[ 1451.058188] vfs_read+0x8e/0x130
[ 1451.058189] SyS_read+0x55/0xc0
[ 1451.058191] do_syscall_64+0x73/0x130
[ 1451.058192] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[ 1451.058194] RIP: 0033:0x7fe0461c70b4
[ 1451.058194] RSP: 002b:00007fe036ffc870 EFLAGS: 00000246 ORIG_RAX:
0000000000000000
[ 1451.058196] RAX: ffffffffffffffda RBX: 000000000000001a RCX: 00007fe0461c70b4
[ 1451.058196] RDX: 0000000000000400 RSI: 00007fdfb00231e0 RDI: 000000000000001a
[ 1451.058197] RBP: 00007fdfb00231e0 R08: 0000000000000001 R09: 0000000000000000
[ 1451.058198] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000400
[ 1451.058198] R13: 00007fe04649f2a0 R14: 0000000000000000 R15: 0000000000000000
[ 1451.058200] INFO: task lxcfs:118730 blocked for more than 120 seconds.
[ 1451.064746] Tainted: P O 4.15.0-36-generic #39-Ubuntu
[ 1451.071559] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
[ 1451.079411] lxcfs D 0 118730 1 0x00000000
[ 1451.079415] Call Trace:
[ 1451.079418] __schedule+0x291/0x8a0
[ 1451.079421] ? ___slab_alloc+0xf2/0x4b0
[ 1451.079423] schedule+0x2c/0x80
[ 1451.079424] schedule_preempt_disabled+0xe/0x10
[ 1451.079426] __mutex_lock.isra.2+0x18c/0x4d0
[ 1451.079428] __mutex_lock_slowpath+0x13/0x20
[ 1451.079431] ? __mutex_lock_slowpath+0x13/0x20
[ 1451.079433] mutex_lock+0x2f/0x40
[ 1451.079437] proc_cgroup_show+0x4c/0x2a0
[ 1451.079440] proc_single_show+0x56/0x80
[ 1451.079442] seq_read+0xe5/0x430
[ 1451.079444] __vfs_read+0x1b/0x40
[ 1451.079445] vfs_read+0x8e/0x130
[ 1451.079447] SyS_read+0x55/0xc0
[ 1451.079449] do_syscall_64+0x73/0x130
[ 1451.079451] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[ 1451.079453] RIP: 0033:0x7fe0461c70b4
[ 1451.079454] RSP: 002b:00007fe0167fb870 EFLAGS: 00000246 ORIG_RAX:
0000000000000000
[ 1451.079455] RAX: ffffffffffffffda RBX: 0000000000000016 RCX: 00007fe0461c70b4
[ 1451.079456] RDX: 0000000000000400 RSI: 00007fe038001a50 RDI: 0000000000000016
[ 1451.079457] RBP: 00007fe038001a50 R08: 0000000000000001 R09: 0000000000000000
[ 1451.079458] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000400
[ 1451.079459] R13: 00007fe04649f2a0 R14: 0000000000000000 R15: 0000000000000000
[ 1451.079463] INFO: task lxcfs:118762 blocked for more than 120 seconds.
[ 1451.086015] Tainted: P O 4.15.0-36-generic #39-Ubuntu
[ 1451.092826] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
[ 1451.100681] lxcfs D 0 118762 1 0x00000000
[ 1451.100683] Call Trace:
[ 1451.100685] __schedule+0x291/0x8a0
[ 1451.100688] ? ___slab_alloc+0xf2/0x4b0
[ 1451.100689] schedule+0x2c/0x80
[ 1451.100690] schedule_preempt_disabled+0xe/0x10
[ 1451.100691] __mutex_lock.isra.2+0x18c/0x4d0
[ 1451.100693] __mutex_lock_slowpath+0x13/0x20
[ 1451.100694] ? __mutex_lock_slowpath+0x13/0x20
[ 1451.100696] mutex_lock+0x2f/0x40
[ 1451.100697] proc_cgroup_show+0x4c/0x2a0
[ 1451.100699] proc_single_show+0x56/0x80
[ 1451.100701] seq_read+0xe5/0x430
[ 1451.100703] __vfs_read+0x1b/0x40
[ 1451.100704] vfs_read+0x8e/0x130
[ 1451.100705] SyS_read+0x55/0xc0
[ 1451.100707] do_syscall_64+0x73/0x130
[ 1451.100708] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[ 1451.100709] RIP: 0033:0x7fe0461c70b4
[ 1451.100710] RSP: 002b:00007fdfd77fd870 EFLAGS: 00000246 ORIG_RAX:
0000000000000000
[ 1451.100712] RAX: ffffffffffffffda RBX: 0000000000000017 RCX: 00007fe0461c70b4
[ 1451.100712] RDX: 0000000000000400 RSI: 00007fdff00218e0 RDI: 0000000000000017
[ 1451.100713] RBP: 00007fdff00218e0 R08: 0000000000000001 R09: 0000000000000000
[ 1451.100714] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000400
[ 1451.100714] R13: 00007fe04649f2a0 R14: 0000000000000000 R15: 0000000000000000
[ 1451.100716] INFO: task lxcfs:119718 blocked for more than 120 seconds.
[ 1451.107265] Tainted: P O 4.15.0-36-generic #39-Ubuntu
[ 1451.114077] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
[ 1451.121930] lxcfs D 0 119718 1 0x00000000
[ 1451.121933] Call Trace:
[ 1451.121937] __schedule+0x291/0x8a0
[ 1451.121938] ? ___slab_alloc+0xf2/0x4b0
[ 1451.121940] schedule+0x2c/0x80
[ 1451.121942] schedule_preempt_disabled+0xe/0x10
[ 1451.121943] __mutex_lock.isra.2+0x18c/0x4d0
[ 1451.121946] __mutex_lock_slowpath+0x13/0x20
[ 1451.121948] ? __mutex_lock_slowpath+0x13/0x20
[ 1451.121951] mutex_lock+0x2f/0x40
[ 1451.121955] proc_cgroup_show+0x4c/0x2a0
[ 1451.121958] proc_single_show+0x56/0x80
[ 1451.121960] seq_read+0xe5/0x430
[ 1451.121962] __vfs_read+0x1b/0x40
[ 1451.121963] vfs_read+0x8e/0x130
[ 1451.121965] SyS_read+0x55/0xc0
[ 1451.121968] do_syscall_64+0x73/0x130
[ 1451.121970] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[ 1451.121971] RIP: 0033:0x7fe0461c70b4
[ 1451.121972] RSP: 002b:00007fdf97ffe870 EFLAGS: 00000246 ORIG_RAX:
0000000000000000
[ 1451.121976] RAX: ffffffffffffffda RBX: 0000000000000015 RCX: 00007fe0461c70b4
[ 1451.121978] RDX: 0000000000000400 RSI: 00007fdf90022100 RDI: 0000000000000015
[ 1451.121979] RBP: 00007fdf90022100 R08: 0000000000000001 R09: 0000000000000000
[ 1451.121981] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000400
[ 1451.121982] R13: 00007fe04649f2a0 R14: 0000000000000000 R15: 0000000000000000
[ 1451.121986] INFO: task lxcfs:7667 blocked for more than 120 seconds.
[ 1451.128367] Tainted: P O 4.15.0-36-generic #39-Ubuntu
[ 1451.135180] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
[ 1451.143034] lxcfs D 0 7667 1 0x00000000
[ 1451.143035] Call Trace:
[ 1451.143038] __schedule+0x291/0x8a0
[ 1451.143040] schedule+0x2c/0x80
[ 1451.143041] schedule_preempt_disabled+0xe/0x10
[ 1451.143043] __mutex_lock.isra.2+0x18c/0x4d0
[ 1451.143044] __mutex_lock_slowpath+0x13/0x20
[ 1451.143045] ? __mutex_lock_slowpath+0x13/0x20
[ 1451.143047] mutex_lock+0x2f/0x40
[ 1451.143048] proc_cgroup_show+0x4c/0x2a0
[ 1451.143050] proc_single_show+0x56/0x80
[ 1451.143051] seq_read+0xe5/0x430
[ 1451.143053] __vfs_read+0x1b/0x40
[ 1451.143054] vfs_read+0x8e/0x130
[ 1451.143055] SyS_read+0x55/0xc0
[ 1451.143056] do_syscall_64+0x73/0x130
[ 1451.143058] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[ 1451.143059] RIP: 0033:0x7fe0461c70b4
[ 1451.143059] RSP: 002b:00007fdfb7ffe870 EFLAGS: 00000246 ORIG_RAX:
0000000000000000
[ 1451.143060] RAX: ffffffffffffffda RBX: 0000000000000013 RCX: 00007fe0461c70b4
[ 1451.143061] RDX: 0000000000000400 RSI: 00007fdfb0021f40 RDI: 0000000000000013
[ 1451.143062] RBP: 00007fdfb0021f40 R08: 0000000000000001 R09: 0000000000000000
[ 1451.143062] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000400
[ 1451.143063] R13: 00007fe04649f2a0 R14: 0000000000000000 R15: 0000000000000000
[ 1451.143065] INFO: task lxcfs:8665 blocked for more than 120 seconds.
[ 1451.149445] Tainted: P O 4.15.0-36-generic #39-Ubuntu
[ 1451.156257] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
[ 1451.164111] lxcfs D 0 8665 1 0x00000000
[ 1451.164113] Call Trace:
[ 1451.164115] __schedule+0x291/0x8a0
[ 1451.164117] schedule+0x2c/0x80
[ 1451.164118] schedule_preempt_disabled+0xe/0x10
[ 1451.164119] __mutex_lock.isra.2+0x18c/0x4d0
[ 1451.164121] __mutex_lock_slowpath+0x13/0x20
[ 1451.164123] ? __mutex_lock_slowpath+0x13/0x20
[ 1451.164124] mutex_lock+0x2f/0x40
[ 1451.164126] proc_cgroup_show+0x4c/0x2a0
[ 1451.164127] proc_single_show+0x56/0x80
[ 1451.164129] seq_read+0xe5/0x430
[ 1451.164131] __vfs_read+0x1b/0x40
[ 1451.164131] vfs_read+0x8e/0x130
[ 1451.164133] SyS_read+0x55/0xc0
[ 1451.164135] do_syscall_64+0x73/0x130
[ 1451.164136] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[ 1451.164137] RIP: 0033:0x7fe0461c70b4
[ 1451.164138] RSP: 002b:00007fe045e9c870 EFLAGS: 00000246 ORIG_RAX:
0000000000000000
[ 1451.164139] RAX: ffffffffffffffda RBX: 0000000000000019 RCX: 00007fe0461c70b4
[ 1451.164140] RDX: 0000000000000400 RSI: 00007fdfec022550 RDI: 0000000000000019
[ 1451.164140] RBP: 00007fdfec022550 R08: 0000000000000001 R09: 0000000000000000
[ 1451.164141] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000400
[ 1451.164142] R13: 00007fe04649f2a0 R14: 0000000000000000 R15: 0000000000000000
[ 1451.164143] INFO: task lxcfs:8864 blocked for more than 120 seconds.
[ 1451.170520] Tainted: P O 4.15.0-36-generic #39-Ubuntu
[ 1451.177325] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
[ 1451.185179] lxcfs D 0 8864 1 0x00000000
[ 1451.185181] Call Trace:
[ 1451.185183] __schedule+0x291/0x8a0
[ 1451.185186] ? ___slab_alloc+0xf2/0x4b0
[ 1451.185187] schedule+0x2c/0x80
[ 1451.185189] schedule_preempt_disabled+0xe/0x10
[ 1451.185190] __mutex_lock.isra.2+0x18c/0x4d0
[ 1451.185192] __mutex_lock_slowpath+0x13/0x20
[ 1451.185193] ? __mutex_lock_slowpath+0x13/0x20
[ 1451.185194] mutex_lock+0x2f/0x40
[ 1451.185196] proc_cgroup_show+0x4c/0x2a0
[ 1451.185197] proc_single_show+0x56/0x80
[ 1451.185199] seq_read+0xe5/0x430
[ 1451.185200] __vfs_read+0x1b/0x40
[ 1451.185201] vfs_read+0x8e/0x130
[ 1451.185202] SyS_read+0x55/0xc0
[ 1451.185204] do_syscall_64+0x73/0x130
[ 1451.185206] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[ 1451.185206] RIP: 0033:0x7fe0461c70b4
[ 1451.185207] RSP: 002b:00007fe015ffa870 EFLAGS: 00000246 ORIG_RAX:
0000000000000000
[ 1451.185208] RAX: ffffffffffffffda RBX: 000000000000001d RCX: 00007fe0461c70b4
[ 1451.185209] RDX: 0000000000000400 RSI: 00007fdfbc022a20 RDI: 000000000000001d
[ 1451.185209] RBP: 00007fdfbc022a20 R08: 0000000000000001 R09: 0000000000000000
[ 1451.185210] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000400
[ 1451.185210] R13: 00007fe04649f2a0 R14: 0000000000000000 R15: 0000000000000000
[ 1451.185212] INFO: task lxcfs:8866 blocked for more than 120 seconds.
[ 1451.191589] Tainted: P O 4.15.0-36-generic #39-Ubuntu
[ 1451.198403] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
[ 1451.206257] lxcfs D 0 8866 1 0x00000000
[ 1451.206259] Call Trace:
[ 1451.206261] __schedule+0x291/0x8a0
[ 1451.206262] schedule+0x2c/0x80
[ 1451.206264] schedule_preempt_disabled+0xe/0x10
[ 1451.206265] __mutex_lock.isra.2+0x18c/0x4d0
[ 1451.206267] __mutex_lock_slowpath+0x13/0x20
[ 1451.206268] ? __mutex_lock_slowpath+0x13/0x20
[ 1451.206269] mutex_lock+0x2f/0x40
[ 1451.206271] proc_cgroup_show+0x4c/0x2a0
[ 1451.206272] proc_single_show+0x56/0x80
[ 1451.206274] seq_read+0xe5/0x430
[ 1451.206275] __vfs_read+0x1b/0x40
[ 1451.206276] vfs_read+0x8e/0x130
[ 1451.206277] SyS_read+0x55/0xc0
[ 1451.206279] do_syscall_64+0x73/0x130
[ 1451.206281] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[ 1451.206282] RIP: 0033:0x7fe0461c70b4
[ 1451.206282] RSP: 002b:00007fe0157f9870 EFLAGS: 00000246 ORIG_RAX:
0000000000000000
[ 1451.206283] RAX: ffffffffffffffda RBX: 0000000000000014 RCX: 00007fe0461c70b4
[ 1451.206284] RDX: 0000000000000400 RSI: 00007fdfdc022000 RDI: 0000000000000014
[ 1451.206285] RBP: 00007fdfdc022000 R08: 0000000000000001 R09: 0000000000000000
[ 1451.206285] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000400
[ 1451.206286] R13: 00007fe04649f2a0 R14: 0000000000000000 R15: 0000000000000000
I am unable to install apport in order to send the information.
I get the error (probably due to the kernel problem?):
Setting up apport (2.20.9-0ubuntu7.4) ...
Failed to preset unit: Connection timed out
/usr/bin/deb-systemd-helper: error: systemctl preset failed on
apport-autoreport.path: No such file or directory
** Changed in: linux (Ubuntu Bionic)
Status: Expired => Confirmed
** Changed in: linux (Ubuntu)
Status: Expired => Confirmed
--
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https://bugs.launchpad.net/bugs/1781601
Title:
Stress-testing LXD causes kernel hung in cgroups (cgroup_destroy
css_killed_work_fn)
Status in linux package in Ubuntu:
Confirmed
Status in linux source package in Bionic:
Confirmed
Bug description:
I have been stress-testing LXD and managed to cause the following
kernel hung:
[10271.564074] INFO: task systemd:1 blocked for more than 120 seconds.
[10271.570397] Tainted: P OE 4.15.0-20-generic #21-Ubuntu
[10271.577212] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[10271.585071] systemd D 0 1 0 0x00000000
[10271.585073] Call Trace:
[10271.585080] __schedule+0x297/0x8b0
[10271.585086] schedule+0x2c/0x80
[10271.585090] schedule_preempt_disabled+0xe/0x10
[10271.585095] __mutex_lock.isra.2+0x18c/0x4d0
[10271.585100] __mutex_lock_slowpath+0x13/0x20
[10271.585101] ? __mutex_lock_slowpath+0x13/0x20
[10271.585102] mutex_lock+0x2f/0x40
[10271.585106] proc_cgroup_show+0x4c/0x2a0
[10271.585108] proc_single_show+0x56/0x80
[10271.585111] seq_read+0xe5/0x430
[10271.585114] __vfs_read+0x1b/0x40
[10271.585115] vfs_read+0x8e/0x130
[10271.585117] SyS_read+0x55/0xc0
[10271.585120] do_syscall_64+0x73/0x130
[10271.585121] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[10271.585123] RIP: 0033:0x7fd47634d0b4
[10271.585124] RSP: 002b:00007ffe9a186700 EFLAGS: 00000246 ORIG_RAX:
0000000000000000
[10271.585125] RAX: ffffffffffffffda RBX: 0000000000000021 RCX:
00007fd47634d0b4
[10271.585126] RDX: 0000000000000400 RSI: 000055f70a08c0c0 RDI:
0000000000000021
[10271.585127] RBP: 000055f70a08c0c0 R08: 0000000000000000 R09:
0000000000000000
[10271.585128] R10: 0000000000000000 R11: 0000000000000246 R12:
0000000000000400
[10271.585129] R13: 00007fd4766252a0 R14: 000055f70a0298e0 R15:
00000000000007ff
[10271.585221] INFO: task lxcfs:84510 blocked for more than 120 seconds.
[10271.591687] Tainted: P OE 4.15.0-20-generic #21-Ubuntu
[10271.598531] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[10271.606401] lxcfs D 0 84510 1 0x00000000
[10271.606407] Call Trace:
[10271.606416] __schedule+0x297/0x8b0
[10271.606418] schedule+0x2c/0x80
[10271.606420] schedule_preempt_disabled+0xe/0x10
[10271.606421] __mutex_lock.isra.2+0x18c/0x4d0
[10271.606423] __mutex_lock_slowpath+0x13/0x20
[10271.606424] ? __mutex_lock_slowpath+0x13/0x20
[10271.606425] mutex_lock+0x2f/0x40
[10271.606427] proc_cgroup_show+0x4c/0x2a0
[10271.606429] proc_single_show+0x56/0x80
[10271.606432] seq_read+0xe5/0x430
[10271.606434] __vfs_read+0x1b/0x40
[10271.606436] vfs_read+0x8e/0x130
[10271.606437] SyS_read+0x55/0xc0
[10271.606440] do_syscall_64+0x73/0x130
[10271.606441] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[10271.606443] RIP: 0033:0x7f1a50e700b4
[10271.606443] RSP: 002b:00007f1a2b7fd870 EFLAGS: 00000246 ORIG_RAX:
0000000000000000
[10271.606445] RAX: ffffffffffffffda RBX: 0000000000000013 RCX:
00007f1a50e700b4
[10271.606446] RDX: 0000000000000400 RSI: 00007f1a04000f90 RDI:
0000000000000013
[10271.606446] RBP: 00007f1a04000f90 R08: 0000000000000001 R09:
0000000000000000
[10271.606447] R10: 0000000000000000 R11: 0000000000000246 R12:
0000000000000400
[10271.606448] R13: 00007f1a511482a0 R14: 0000000000000000 R15:
00007f1a38003a40
[10271.606450] INFO: task lxcfs:84676 blocked for more than 120 seconds.
[10271.612911] Tainted: P OE 4.15.0-20-generic #21-Ubuntu
[10271.619722] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[10271.627577] lxcfs D 0 84676 1 0x00000000
[10271.627579] Call Trace:
[10271.627583] __schedule+0x297/0x8b0
[10271.627589] schedule+0x2c/0x80
[10271.627594] schedule_preempt_disabled+0xe/0x10
[10271.627598] __mutex_lock.isra.2+0x18c/0x4d0
[10271.627600] __mutex_lock_slowpath+0x13/0x20
[10271.627601] ? __mutex_lock_slowpath+0x13/0x20
[10271.627602] mutex_lock+0x2f/0x40
[10271.627604] proc_cgroup_show+0x4c/0x2a0
[10271.627606] proc_single_show+0x56/0x80
[10271.627608] seq_read+0xe5/0x430
[10271.627610] __vfs_read+0x1b/0x40
[10271.627611] vfs_read+0x8e/0x130
[10271.627613] SyS_read+0x55/0xc0
[10271.627615] do_syscall_64+0x73/0x130
[10271.627617] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[10271.627618] RIP: 0033:0x7f1a50e700b4
[10271.627618] RSP: 002b:00007f1a297f9870 EFLAGS: 00000246 ORIG_RAX:
0000000000000000
[10271.627620] RAX: ffffffffffffffda RBX: 0000000000000014 RCX:
00007f1a50e700b4
[10271.627620] RDX: 0000000000000400 RSI: 00007f1a2c001e80 RDI:
0000000000000014
[10271.627621] RBP: 00007f1a2c001e80 R08: 0000000000000001 R09:
0000000000000000
[10271.627622] R10: 0000000000000000 R11: 0000000000000246 R12:
0000000000000400
[10271.627622] R13: 00007f1a511482a0 R14: 0000000000000000 R15:
00007f1a2c002b10
[10271.627625] INFO: task lxcfs:115507 blocked for more than 120 seconds.
[10271.634180] Tainted: P OE 4.15.0-20-generic #21-Ubuntu
[10271.641007] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[10271.648870] lxcfs D 0 115507 1 0x00000000
[10271.648872] Call Trace:
[10271.648876] __schedule+0x297/0x8b0
[10271.648883] schedule+0x2c/0x80
[10271.648887] schedule_preempt_disabled+0xe/0x10
[10271.648891] __mutex_lock.isra.2+0x18c/0x4d0
[10271.648895] __mutex_lock_slowpath+0x13/0x20
[10271.648896] ? __mutex_lock_slowpath+0x13/0x20
[10271.648897] mutex_lock+0x2f/0x40
[10271.648899] proc_cgroup_show+0x4c/0x2a0
[10271.648902] proc_single_show+0x56/0x80
[10271.648904] seq_read+0xe5/0x430
[10271.648906] __vfs_read+0x1b/0x40
[10271.648907] vfs_read+0x8e/0x130
[10271.648909] SyS_read+0x55/0xc0
[10271.648911] do_syscall_64+0x73/0x130
[10271.648913] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[10271.648914] RIP: 0033:0x7f1a50e700b4
[10271.648915] RSP: 002b:00007f1a29ffa870 EFLAGS: 00000246 ORIG_RAX:
0000000000000000
[10271.648916] RAX: ffffffffffffffda RBX: 0000000000000015 RCX:
00007f1a50e700b4
[10271.648917] RDX: 0000000000000400 RSI: 00007f19f0001820 RDI:
0000000000000015
[10271.648918] RBP: 00007f19f0001820 R08: 0000000000000001 R09:
0000000000000000
[10271.648925] R10: 0000000000000000 R11: 0000000000000246 R12:
0000000000000400
[10271.648928] R13: 00007f1a511482a0 R14: 0000000000000000 R15:
00007f19f00024d0
[10271.648964] INFO: task kworker/14:1:111280 blocked for more than 120
seconds.
[10271.656131] Tainted: P OE 4.15.0-20-generic #21-Ubuntu
[10271.662944] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[10271.670822] kworker/14:1 D 0 111280 2 0x80000000
[10271.670827] Workqueue: cgroup_destroy css_killed_work_fn
[10271.670828] Call Trace:
[10271.670832] __schedule+0x297/0x8b0
[10271.670834] schedule+0x2c/0x80
[10271.670836] schedule_preempt_disabled+0xe/0x10
[10271.670837] __mutex_lock.isra.2+0x18c/0x4d0
[10271.670841] ? wake_up_q+0x44/0x80
[10271.670842] __mutex_lock_slowpath+0x13/0x20
[10271.670843] ? __mutex_lock_slowpath+0x13/0x20
[10271.670844] mutex_lock+0x2f/0x40
[10271.670845] css_killed_work_fn+0x1f/0xe0
[10271.670848] process_one_work+0x1de/0x410
[10271.670849] worker_thread+0x32/0x410
[10271.670851] kthread+0x121/0x140
[10271.670852] ? process_one_work+0x410/0x410
[10271.670854] ? kthread_create_worker_on_cpu+0x70/0x70
[10271.670856] ? kthread_create_worker_on_cpu+0x70/0x70
[10271.670857] ret_from_fork+0x22/0x40
[10271.670859] INFO: task kworker/29:0:111571 blocked for more than 120
seconds.
[10271.678018] Tainted: P OE 4.15.0-20-generic #21-Ubuntu
[10271.684827] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[10271.692681] kworker/29:0 D 0 111571 2 0x80000000
[10271.692686] Workqueue: cgroup_destroy css_release_work_fn
[10271.692691] Call Trace:
[10271.692694] __schedule+0x297/0x8b0
[10271.692697] ? ttwu_do_wakeup+0x1e/0x150
[10271.692699] schedule+0x2c/0x80
[10271.692700] schedule_preempt_disabled+0xe/0x10
[10271.692702] __mutex_lock.isra.2+0x18c/0x4d0
[10271.692709] ? wake_up_q+0x44/0x80
[10271.692714] __mutex_lock_slowpath+0x13/0x20
[10271.692719] ? __mutex_lock_slowpath+0x13/0x20
[10271.692723] mutex_lock+0x2f/0x40
[10271.692728] css_release_work_fn+0x2b/0x180
[10271.692733] process_one_work+0x1de/0x410
[10271.692735] worker_thread+0x32/0x410
[10271.692737] kthread+0x121/0x140
[10271.692738] ? process_one_work+0x410/0x410
[10271.692740] ? kthread_create_worker_on_cpu+0x70/0x70
[10271.692742] ? do_syscall_64+0x115/0x130
[10271.692743] ret_from_fork+0x22/0x40
[10271.692752] INFO: task kworker/2:1:128568 blocked for more than 120
seconds.
[10271.699827] Tainted: P OE 4.15.0-20-generic #21-Ubuntu
[10271.706653] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[10271.714524] kworker/2:1 D 0 128568 2 0x80000000
[10271.714529] Workqueue: cgroup_destroy css_release_work_fn
[10271.714530] Call Trace:
[10271.714534] __schedule+0x297/0x8b0
[10271.714536] schedule+0x2c/0x80
[10271.714537] schedule_preempt_disabled+0xe/0x10
[10271.714539] __mutex_lock.isra.2+0x18c/0x4d0
[10271.714540] __mutex_lock_slowpath+0x13/0x20
[10271.714541] ? __mutex_lock_slowpath+0x13/0x20
[10271.714543] mutex_lock+0x2f/0x40
[10271.714544] css_release_work_fn+0x2b/0x180
[10271.714545] process_one_work+0x1de/0x410
[10271.714547] worker_thread+0x32/0x410
[10271.714548] kthread+0x121/0x140
[10271.714550] ? process_one_work+0x410/0x410
[10271.714551] ? kthread_create_worker_on_cpu+0x70/0x70
[10271.714552] ? kthread_create_worker_on_cpu+0x70/0x70
[10271.714554] ret_from_fork+0x22/0x40
[10271.714564] INFO: task kworker/43:4:46368 blocked for more than 120
seconds.
[10271.721637] Tainted: P OE 4.15.0-20-generic #21-Ubuntu
[10271.728456] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[10271.736309] kworker/43:4 D 0 46368 2 0x80000000
[10271.736314] Workqueue: cgroup_destroy css_killed_work_fn
[10271.736321] Call Trace:
[10271.736328] __schedule+0x297/0x8b0
[10271.736330] schedule+0x2c/0x80
[10271.736332] schedule_preempt_disabled+0xe/0x10
[10271.736333] __mutex_lock.isra.2+0x18c/0x4d0
[10271.736336] ? wake_up_q+0x44/0x80
[10271.736337] __mutex_lock_slowpath+0x13/0x20
[10271.736338] ? __mutex_lock_slowpath+0x13/0x20
[10271.736339] mutex_lock+0x2f/0x40
[10271.736341] css_killed_work_fn+0x1f/0xe0
[10271.736342] process_one_work+0x1de/0x410
[10271.736344] worker_thread+0x32/0x410
[10271.736346] kthread+0x121/0x140
[10271.736352] ? process_one_work+0x410/0x410
[10271.736357] ? kthread_create_worker_on_cpu+0x70/0x70
[10271.736362] ret_from_fork+0x22/0x40
[10271.736367] INFO: task kworker/13:3:49251 blocked for more than 120
seconds.
[10271.743439] Tainted: P OE 4.15.0-20-generic #21-Ubuntu
[10271.750250] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[10271.758106] kworker/13:3 D 0 49251 2 0x80000000
[10271.758110] Workqueue: cgroup_destroy css_killed_work_fn
[10271.758111] Call Trace:
[10271.758119] __schedule+0x297/0x8b0
[10271.758122] schedule+0x2c/0x80
[10271.758123] schedule_preempt_disabled+0xe/0x10
[10271.758124] __mutex_lock.isra.2+0x18c/0x4d0
[10271.758127] ? wake_up_q+0x44/0x80
[10271.758128] __mutex_lock_slowpath+0x13/0x20
[10271.758129] ? __mutex_lock_slowpath+0x13/0x20
[10271.758130] mutex_lock+0x2f/0x40
[10271.758131] css_killed_work_fn+0x1f/0xe0
[10271.758133] process_one_work+0x1de/0x410
[10271.758134] worker_thread+0x32/0x410
[10271.758136] kthread+0x121/0x140
[10271.758143] ? process_one_work+0x410/0x410
[10271.758148] ? kthread_create_worker_on_cpu+0x70/0x70
[10271.758153] ret_from_fork+0x22/0x40
[10271.758161] INFO: task kworker/38:1:21823 blocked for more than 120
seconds.
[10271.765236] Tainted: P OE 4.15.0-20-generic #21-Ubuntu
[10271.772047] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[10271.779902] kworker/38:1 D 0 21823 2 0x80000000
[10271.779907] Workqueue: cgroup_destroy css_release_work_fn
[10271.779911] Call Trace:
[10271.779918] __schedule+0x297/0x8b0
[10271.779920] schedule+0x2c/0x80
[10271.779922] schedule_preempt_disabled+0xe/0x10
[10271.779923] __mutex_lock.isra.2+0x18c/0x4d0
[10271.779925] ? wake_up_q+0x44/0x80
[10271.779926] __mutex_lock_slowpath+0x13/0x20
[10271.779928] ? __mutex_lock_slowpath+0x13/0x20
[10271.779929] mutex_lock+0x2f/0x40
[10271.779930] css_release_work_fn+0x2b/0x180
[10271.779935] process_one_work+0x1de/0x410
[10271.779941] worker_thread+0x32/0x410
[10271.779946] kthread+0x121/0x140
[10271.779952] ? process_one_work+0x410/0x410
[10271.779955] ? kthread_create_worker_on_cpu+0x70/0x70
[10271.779959] ret_from_fork+0x22/0x40
root@myserver:~#
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