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)
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