My computer had some very unhappy times just now, while I was using it, where it did not respond to mouse or keyboard for minutes. I saw via my i3bar that it went from 700-ish megabytes of free memory to 2.6 gigabytes of free memory. These are the entries from dmesg after it recovered:
[629656.318431] INFO: task Xorg:4451 blocked for more than 120 seconds. [629656.318440] Tainted: P O 5.4.0-196-generic #216-Ubuntu [629656.318443] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [629656.318447] Xorg D 0 4451 4406 0x00000084 [629656.318453] Call Trace: [629656.318467] __schedule+0x2e3/0x740 [629656.318474] ? kfree_skbmem+0x4e/0x90 [629656.318480] schedule+0x42/0xb0 [629656.318485] schedule_preempt_disabled+0xe/0x10 [629656.318489] __mutex_lock.isra.0+0x172/0x4c0 [629656.318498] __mutex_lock_slowpath+0x13/0x20 [629656.318502] mutex_lock+0x2e/0x40 [629656.318607] __i915_gem_free_objects+0x73/0x1a0 [i915] [629656.318695] i915_gem_flush_free_objects+0x1d/0x20 [i915] [629656.318783] i915_gem_create_ioctl+0x1d/0x40 [i915] [629656.318866] ? i915_gem_dumb_create+0xb0/0xb0 [i915] [629656.318903] drm_ioctl_kernel+0xae/0xf0 [drm] [629656.318934] drm_ioctl+0x24a/0x3f0 [drm] [629656.319016] ? i915_gem_dumb_create+0xb0/0xb0 [i915] [629656.319024] ? ___sys_recvmsg+0x88/0xc0 [629656.319031] ? timerqueue_add+0x68/0xb0 [629656.319040] ? enqueue_hrtimer+0x43/0xa0 [629656.319048] do_vfs_ioctl+0x407/0x670 [629656.319054] ? __audit_syscall_entry+0xdb/0x120 [629656.319060] ksys_ioctl+0x67/0x90 [629656.319065] __x64_sys_ioctl+0x1a/0x20 [629656.319073] do_syscall_64+0x57/0x190 [629656.319080] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [629656.319085] RIP: 0033:0x7f2fa401a5cb [629656.319095] Code: Bad RIP value. [629656.319099] RSP: 002b:00007ffe5e18fa08 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [629656.319103] RAX: ffffffffffffffda RBX: 000055c547d18290 RCX: 00007f2fa401a5cb [629656.319106] RDX: 00007ffe5e18fa50 RSI: 00000000c010645b RDI: 0000000000000011 [629656.319108] RBP: 00007ffe5e18fae0 R08: 000055c5484ff200 R09: 000055c547c5d022 [629656.319110] R10: 000055c547c5d010 R11: 0000000000000246 R12: 0000000000000000 [629656.319112] R13: 000055c547d182a8 R14: 00007ffe5e18fa50 R15: 000055c547d182b0 [629656.319311] INFO: task kworker/u16:7:3226844 blocked for more than 120 seconds. [629656.319317] Tainted: P O 5.4.0-196-generic #216-Ubuntu [629656.319320] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [629656.319323] kworker/u16:7 D 0 3226844 2 0x80004080 [629656.319415] Workqueue: i915 __i915_gem_free_work [i915] [629656.319418] Call Trace: [629656.319425] __schedule+0x2e3/0x740 [629656.319432] schedule+0x42/0xb0 [629656.319436] schedule_preempt_disabled+0xe/0x10 [629656.319441] __mutex_lock.isra.0+0x172/0x4c0 [629656.319451] ? __pm_runtime_resume+0x60/0x80 [629656.319457] __mutex_lock_slowpath+0x13/0x20 [629656.319461] mutex_lock+0x2e/0x40 [629656.319539] __i915_gem_free_objects+0x73/0x1a0 [i915] [629656.319615] __i915_gem_free_work+0x21/0x30 [i915] [629656.319621] process_one_work+0x1eb/0x3b0 [629656.319626] worker_thread+0x4d/0x400 [629656.319634] kthread+0x104/0x140 [629656.319638] ? process_one_work+0x3b0/0x3b0 [629656.319643] ? kthread_park+0x90/0x90 [629656.319649] ret_from_fork+0x1f/0x40 [629674.524803] Purging GPU memory, 134196 pages freed, 8256 pages still pinned, 1 pages left available. [866218.047519] mce: CPU5: Core temperature above threshold, cpu clock throttled (total events = 429) [866218.047520] mce: CPU1: Core temperature above threshold, cpu clock throttled (total events = 429) [866218.047521] mce: CPU7: Package temperature above threshold, cpu clock throttled (total events = 763) [866218.047522] mce: CPU3: Package temperature above threshold, cpu clock throttled (total events = 763) [866218.047523] mce: CPU1: Package temperature above threshold, cpu clock throttled (total events = 763) [866218.047524] mce: CPU5: Package temperature above threshold, cpu clock throttled (total events = 763) [866218.047574] mce: CPU4: Package temperature above threshold, cpu clock throttled (total events = 763) [866218.047575] mce: CPU0: Package temperature above threshold, cpu clock throttled (total events = 763) [866218.047576] mce: CPU6: Package temperature above threshold, cpu clock throttled (total events = 763) [866218.047576] mce: CPU2: Package temperature above threshold, cpu clock throttled (total events = 763) [866218.048556] mce: CPU1: Core temperature/speed normal [866218.048556] mce: CPU5: Core temperature/speed normal [866218.048557] mce: CPU3: Package temperature/speed normal [866218.048557] mce: CPU7: Package temperature/speed normal [866218.048558] mce: CPU5: Package temperature/speed normal [866218.048559] mce: CPU1: Package temperature/speed normal [866218.048609] mce: CPU6: Package temperature/speed normal [866218.048610] mce: CPU0: Package temperature/speed normal [866218.048610] mce: CPU2: Package temperature/speed normal [866218.048611] mce: CPU4: Package temperature/speed normal [868651.737607] sctp: Hash tables configured (bind 256/256) [886544.836485] INFO: task txg_sync:1271 blocked for more than 120 seconds. [886544.836494] Tainted: P O 5.4.0-196-generic #216-Ubuntu [886544.836497] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [886544.836503] txg_sync D 0 1271 2 0x80004000 [886544.836509] Call Trace: [886544.836526] __schedule+0x2e3/0x740 [886544.836536] ? __internal_add_timer+0x2d/0x40 [886544.836544] schedule+0x42/0xb0 [886544.836552] schedule_timeout+0x8a/0x160 [886544.836561] ? __next_timer_interrupt+0xe0/0xe0 [886544.836568] io_schedule_timeout+0x1e/0x50 [886544.836588] __cv_timedwait_common+0x15e/0x1c0 [spl] [886544.836597] ? __wake_up_pollfree+0x40/0x40 [886544.836613] __cv_timedwait_io+0x19/0x20 [spl] [886544.836813] zio_wait+0x11e/0x230 [zfs] [886544.836990] ? __raw_spin_unlock+0x9/0x10 [zfs] [886544.837161] dsl_pool_sync+0xbc/0x410 [zfs] [886544.837364] spa_sync_iterate_to_convergence+0xe0/0x1c0 [zfs] [886544.837533] spa_sync+0x312/0x5b0 [zfs] [886544.837705] txg_sync_thread+0x27a/0x310 [zfs] [886544.837895] ? txg_dispatch_callbacks+0x100/0x100 [zfs] [886544.837916] thread_generic_wrapper+0x83/0xa0 [spl] [886544.837925] kthread+0x104/0x140 [886544.837941] ? clear_bit+0x20/0x20 [spl] [886544.837946] ? kthread_park+0x90/0x90 [886544.837954] ret_from_fork+0x1f/0x40 [886594.499181] Purging GPU memory, 175226 pages freed, 8256 pages still pinned, 1 pages left available. Given the timestamps, I'm going to guess this happened before, when I wasn't around, and it recovered on its own, before I saw it in action. Thanks -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2083638 Title: overnight crashes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2083638/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
