Hello!
I'm writing to report a crash in the QXL / DRM code in the Linux kernel. I originally filed the issue on LaunchPad and more details can be found there, although I doubt whether these details are useful.
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1813620
I first experienced these issues with:
* Ubuntu 18.04 (probably kernel 4.15.something) * Ubuntu 18.10 (kernel 4.18.0-13) * Ubuntu 19.04 (kernel 5.0.0-13-generic) * Ubuntu 19.04 (mainline kernel 5.1-rc7) * Ubuntu 19.04 (mainline kernel 5.2.0-050200rc1-generic)
Here is the crash output from dmesg:
[354073.713350] INFO: task Xorg:920 blocked for more than 120 seconds. [354073.717755] Not tainted 5.2.0-050200rc1-generic #201905191930 [354073.722277] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [354073.738332] Xorg D 0 920 854 0x00404004 [354073.738334] Call Trace: [354073.738340] __schedule+0x2ba/0x650 [354073.738342] schedule+0x2d/0x90 [354073.738343] schedule_preempt_disabled+0xe/0x10 [354073.738345] __ww_mutex_lock.isra.11+0x3e0/0x750 [354073.738346] __ww_mutex_lock_slowpath+0x16/0x20 [354073.738347] ww_mutex_lock+0x34/0x50 [354073.738352] ttm_eu_reserve_buffers+0x1f9/0x2e0 [ttm] [354073.738356] qxl_release_reserve_list+0x67/0x150 [qxl] [354073.738358] ? qxl_bo_pin+0xaa/0x190 [qxl] [354073.738359] qxl_cursor_atomic_update+0x1b0/0x2e0 [qxl] [354073.738367] drm_atomic_helper_commit_planes+0xb9/0x220 [drm_kms_helper] [354073.738371] drm_atomic_helper_commit_tail+0x2b/0x70 [drm_kms_helper] [354073.738374] commit_tail+0x67/0x70 [drm_kms_helper] [354073.738378] drm_atomic_helper_commit+0x113/0x120 [drm_kms_helper] [354073.738390] drm_atomic_commit+0x4a/0x50 [drm] [354073.738394] drm_atomic_helper_update_plane+0xe9/0x100 [drm_kms_helper] [354073.738402] __setplane_atomic+0xd3/0x120 [drm] [354073.738410] drm_mode_cursor_universal+0x142/0x270 [drm] [354073.738418] drm_mode_cursor_common+0xcb/0x220 [drm] [354073.738425] ? drm_mode_cursor_ioctl+0x60/0x60 [drm] [354073.738432] drm_mode_cursor2_ioctl+0xe/0x10 [drm] [354073.738438] drm_ioctl_kernel+0xb0/0x100 [drm] [354073.738440] ? ___sys_recvmsg+0x16c/0x200 [354073.738445] drm_ioctl+0x233/0x410 [drm] [354073.738452] ? drm_mode_cursor_ioctl+0x60/0x60 [drm] [354073.738454] ? timerqueue_add+0x57/0x90 [354073.738456] ? enqueue_hrtimer+0x3c/0x90 [354073.738458] do_vfs_ioctl+0xa9/0x640 [354073.738459] ? fput+0x13/0x20 [354073.738461] ? __sys_recvmsg+0x88/0xa0 [354073.738462] ksys_ioctl+0x67/0x90 [354073.738463] __x64_sys_ioctl+0x1a/0x20 [354073.738465] do_syscall_64+0x5a/0x140 [354073.738467] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [354073.738468] RIP: 0033:0x7ffad14d3417 [354073.738472] Code: Bad RIP value. [354073.738472] RSP: 002b:00007ffdd5679978 EFLAGS: 00003246 ORIG_RAX: 0000000000000010 [354073.738473] RAX: ffffffffffffffda RBX: 000056428a474610 RCX: 00007ffad14d3417 [354073.738474] RDX: 00007ffdd56799b0 RSI: 00000000c02464bb RDI: 000000000000000e [354073.738474] RBP: 00007ffdd56799b0 R08: 0000000000000040 R09: 0000000000000010 [354073.738475] R10: 000000000000003f R11: 0000000000003246 R12: 00000000c02464bb [354073.738475] R13: 000000000000000e R14: 0000000000000000 R15: 000056428a4721d0 [354073.738511] INFO: task kworker/1:0:27625 blocked for more than 120 seconds. [354073.745154] Not tainted 5.2.0-050200rc1-generic #201905191930 [354073.751900] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [354073.762197] kworker/1:0 D 0 27625 2 0x80004000 [354073.762205] Workqueue: events qxl_client_monitors_config_work_func [qxl] [354073.762206] Call Trace: [354073.762211] __schedule+0x2ba/0x650 [354073.762214] schedule+0x2d/0x90 [354073.762215] schedule_preempt_disabled+0xe/0x10 [354073.762216] __ww_mutex_lock.isra.11+0x3e0/0x750 [354073.762217] ? __switch_to_asm+0x34/0x70 [354073.762218] ? __switch_to_asm+0x40/0x70 [354073.762219] ? __switch_to_asm+0x40/0x70 [354073.762220] __ww_mutex_lock_slowpath+0x16/0x20 [354073.762221] ww_mutex_lock+0x34/0x50 [354073.762235] drm_modeset_lock+0x35/0xb0 [drm] [354073.762243] drm_modeset_lock_all_ctx+0x5d/0xe0 [drm] [354073.762251] drm_modeset_lock_all+0x5e/0xb0 [drm] [354073.762252] qxl_display_read_client_monitors_config+0x1e1/0x370 [qxl] [354073.762254] qxl_client_monitors_config_work_func+0x15/0x20 [qxl] [354073.762256] process_one_work+0x20f/0x410 [354073.762257] worker_thread+0x34/0x400 [354073.762259] kthread+0x120/0x140 [354073.762260] ? process_one_work+0x410/0x410 [354073.762261] ? __kthread_parkme+0x70/0x70 [354073.762262] ret_from_fork+0x35/0x40 [354194.557095] INFO: task Xorg:920 blocked for more than 241 seconds. [354194.558311] Not tainted 5.2.0-050200rc1-generic #201905191930 [354194.559484] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [354194.560936] Xorg D 0 920 854 0x00404004 [354194.560938] Call Trace: [354194.560944] __schedule+0x2ba/0x650 [354194.560946] schedule+0x2d/0x90 [354194.560947] schedule_preempt_disabled+0xe/0x10 [354194.560948] __ww_mutex_lock.isra.11+0x3e0/0x750 [354194.560950] __ww_mutex_lock_slowpath+0x16/0x20 [354194.560950] ww_mutex_lock+0x34/0x50 [354194.560956] ttm_eu_reserve_buffers+0x1f9/0x2e0 [ttm] [354194.560959] qxl_release_reserve_list+0x67/0x150 [qxl] [354194.560961] ? qxl_bo_pin+0xaa/0x190 [qxl] [354194.560963] qxl_cursor_atomic_update+0x1b0/0x2e0 [qxl] [354194.560971] drm_atomic_helper_commit_planes+0xb9/0x220 [drm_kms_helper] [354194.560975] drm_atomic_helper_commit_tail+0x2b/0x70 [drm_kms_helper] [354194.560979] commit_tail+0x67/0x70 [drm_kms_helper] [354194.560982] drm_atomic_helper_commit+0x113/0x120 [drm_kms_helper] [354194.560993] drm_atomic_commit+0x4a/0x50 [drm] [354194.560997] drm_atomic_helper_update_plane+0xe9/0x100 [drm_kms_helper] [354194.561011] __setplane_atomic+0xd3/0x120 [drm] [354194.561019] drm_mode_cursor_universal+0x142/0x270 [drm] [354194.561027] drm_mode_cursor_common+0xcb/0x220 [drm] [354194.561034] ? drm_mode_cursor_ioctl+0x60/0x60 [drm] [354194.561041] drm_mode_cursor2_ioctl+0xe/0x10 [drm] [354194.561047] drm_ioctl_kernel+0xb0/0x100 [drm] [354194.561049] ? ___sys_recvmsg+0x16c/0x200 [354194.561057] drm_ioctl+0x233/0x410 [drm] [354194.561080] ? drm_mode_cursor_ioctl+0x60/0x60 [drm] [354194.561082] ? timerqueue_add+0x57/0x90 [354194.561084] ? enqueue_hrtimer+0x3c/0x90 [354194.561086] do_vfs_ioctl+0xa9/0x640 [354194.561088] ? fput+0x13/0x20 [354194.561089] ? __sys_recvmsg+0x88/0xa0 [354194.561090] ksys_ioctl+0x67/0x90 [354194.561091] __x64_sys_ioctl+0x1a/0x20 [354194.561093] do_syscall_64+0x5a/0x140 [354194.561094] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [354194.561096] RIP: 0033:0x7ffad14d3417 [354194.561100] Code: Bad RIP value. [354194.561100] RSP: 002b:00007ffdd5679978 EFLAGS: 00003246 ORIG_RAX: 0000000000000010 [354194.561101] RAX: ffffffffffffffda RBX: 000056428a474610 RCX: 00007ffad14d3417 [354194.561102] RDX: 00007ffdd56799b0 RSI: 00000000c02464bb RDI: 000000000000000e [354194.561102] RBP: 00007ffdd56799b0 R08: 0000000000000040 R09: 0000000000000010 [354194.561103] R10: 000000000000003f R11: 0000000000003246 R12: 00000000c02464bb [354194.561103] R13: 000000000000000e R14: 0000000000000000 R15: 000056428a4721d0 [354194.561163] INFO: task kworker/1:0:27625 blocked for more than 241 seconds. [354194.562474] Not tainted 5.2.0-050200rc1-generic #201905191930 [354194.563994] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [354194.565474] kworker/1:0 D 0 27625 2 0x80004000 [354194.565479] Workqueue: events qxl_client_monitors_config_work_func [qxl] [354194.565480] Call Trace: [354194.565483] __schedule+0x2ba/0x650 [354194.565484] schedule+0x2d/0x90 [354194.565486] schedule_preempt_disabled+0xe/0x10 [354194.565486] __ww_mutex_lock.isra.11+0x3e0/0x750 [354194.565488] ? __switch_to_asm+0x34/0x70 [354194.565489] ? __switch_to_asm+0x40/0x70 [354194.565490] ? __switch_to_asm+0x40/0x70 [354194.565490] __ww_mutex_lock_slowpath+0x16/0x20 [354194.565491] ww_mutex_lock+0x34/0x50 [354194.565499] drm_modeset_lock+0x35/0xb0 [drm] [354194.565507] drm_modeset_lock_all_ctx+0x5d/0xe0 [drm] [354194.565514] drm_modeset_lock_all+0x5e/0xb0 [drm] [354194.565516] qxl_display_read_client_monitors_config+0x1e1/0x370 [qxl] [354194.565518] qxl_client_monitors_config_work_func+0x15/0x20 [qxl] [354194.565519] process_one_work+0x20f/0x410 [354194.565521] worker_thread+0x34/0x400 [354194.565522] kthread+0x120/0x140 [354194.565523] ? process_one_work+0x410/0x410 [354194.565524] ? __kthread_parkme+0x70/0x70 [354194.565525] ret_from_fork+0x35/0x40 [354315.400956] INFO: task Xorg:920 blocked for more than 362 seconds. [354315.411626] Not tainted 5.2.0-050200rc1-generic #201905191930 [354315.422647] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [354315.435897] Xorg D 0 920 854 0x00404004 [354315.435899] Call Trace: [354315.435923] __schedule+0x2ba/0x650 [354315.435925] schedule+0x2d/0x90 [354315.435927] schedule_preempt_disabled+0xe/0x10 [354315.435928] __ww_mutex_lock.isra.11+0x3e0/0x750 [354315.435929] __ww_mutex_lock_slowpath+0x16/0x20 [354315.435930] ww_mutex_lock+0x34/0x50 [354315.435935] ttm_eu_reserve_buffers+0x1f9/0x2e0 [ttm] [354315.435939] qxl_release_reserve_list+0x67/0x150 [qxl] [354315.435941] ? qxl_bo_pin+0xaa/0x190 [qxl] [354315.435943] qxl_cursor_atomic_update+0x1b0/0x2e0 [qxl] [354315.435951] drm_atomic_helper_commit_planes+0xb9/0x220 [drm_kms_helper] [354315.435955] drm_atomic_helper_commit_tail+0x2b/0x70 [drm_kms_helper] [354315.435958] commit_tail+0x67/0x70 [drm_kms_helper] [354315.435962] drm_atomic_helper_commit+0x113/0x120 [drm_kms_helper] [354315.435974] drm_atomic_commit+0x4a/0x50 [drm] [354315.435977] drm_atomic_helper_update_plane+0xe9/0x100 [drm_kms_helper] [354315.435985] __setplane_atomic+0xd3/0x120 [drm] [354315.435993] drm_mode_cursor_universal+0x142/0x270 [drm] [354315.436001] drm_mode_cursor_common+0xcb/0x220 [drm] [354315.436009] ? drm_mode_cursor_ioctl+0x60/0x60 [drm] [354315.436016] drm_mode_cursor2_ioctl+0xe/0x10 [drm] [354315.436021] drm_ioctl_kernel+0xb0/0x100 [drm] [354315.436023] ? ___sys_recvmsg+0x16c/0x200 [354315.436029] drm_ioctl+0x233/0x410 [drm] [354315.436036] ? drm_mode_cursor_ioctl+0x60/0x60 [drm] [354315.436038] ? timerqueue_add+0x57/0x90 [354315.436040] ? enqueue_hrtimer+0x3c/0x90 [354315.436042] do_vfs_ioctl+0xa9/0x640 [354315.436043] ? fput+0x13/0x20 [354315.436045] ? __sys_recvmsg+0x88/0xa0 [354315.436046] ksys_ioctl+0x67/0x90 [354315.436047] __x64_sys_ioctl+0x1a/0x20 [354315.436049] do_syscall_64+0x5a/0x140 [354315.436050] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [354315.436051] RIP: 0033:0x7ffad14d3417 [354315.436069] Code: Bad RIP value. [354315.436070] RSP: 002b:00007ffdd5679978 EFLAGS: 00003246 ORIG_RAX: 0000000000000010 [354315.436071] RAX: ffffffffffffffda RBX: 000056428a474610 RCX: 00007ffad14d3417 [354315.436071] RDX: 00007ffdd56799b0 RSI: 00000000c02464bb RDI: 000000000000000e [354315.436072] RBP: 00007ffdd56799b0 R08: 0000000000000040 R09: 0000000000000010 [354315.436072] R10: 000000000000003f R11: 0000000000003246 R12: 00000000c02464bb [354315.436073] R13: 000000000000000e R14: 0000000000000000 R15: 000056428a4721d0 [354315.436103] INFO: task kworker/1:0:27625 blocked for more than 362 seconds. [354315.451103] Not tainted 5.2.0-050200rc1-generic #201905191930 [354315.461927] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [354315.477908] kworker/1:0 D 0 27625 2 0x80004000 [354315.477916] Workqueue: events qxl_client_monitors_config_work_func [qxl] [354315.477918] Call Trace: [354315.477924] __schedule+0x2ba/0x650 [354315.477925] schedule+0x2d/0x90 [354315.477927] schedule_preempt_disabled+0xe/0x10 [354315.477928] __ww_mutex_lock.isra.11+0x3e0/0x750 [354315.477930] ? __switch_to_asm+0x34/0x70 [354315.477931] ? __switch_to_asm+0x40/0x70 [354315.477932] ? __switch_to_asm+0x40/0x70 [354315.477933] __ww_mutex_lock_slowpath+0x16/0x20 [354315.477933] ww_mutex_lock+0x34/0x50 [354315.477947] drm_modeset_lock+0x35/0xb0 [drm] [354315.477955] drm_modeset_lock_all_ctx+0x5d/0xe0 [drm] [354315.477963] drm_modeset_lock_all+0x5e/0xb0 [drm] [354315.477965] qxl_display_read_client_monitors_config+0x1e1/0x370 [qxl] [354315.477967] qxl_client_monitors_config_work_func+0x15/0x20 [qxl] [354315.477969] process_one_work+0x20f/0x410 [354315.477970] worker_thread+0x34/0x400 [354315.477972] kthread+0x120/0x140 [354315.477973] ? process_one_work+0x410/0x410 [354315.477973] ? __kthread_parkme+0x70/0x70 [354315.477975] ret_from_fork+0x35/0x40 [354436.251965] INFO: task Xorg:920 blocked for more than 483 seconds. [354436.253054] Not tainted 5.2.0-050200rc1-generic #201905191930 [354436.254109] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [354436.255421] Xorg D 0 920 854 0x00404004 [354436.255423] Call Trace: [354436.255429] __schedule+0x2ba/0x650 [354436.255431] schedule+0x2d/0x90 [354436.255433] schedule_preempt_disabled+0xe/0x10 [354436.255434] __ww_mutex_lock.isra.11+0x3e0/0x750 [354436.255435] __ww_mutex_lock_slowpath+0x16/0x20 [354436.255435] ww_mutex_lock+0x34/0x50 [354436.255441] ttm_eu_reserve_buffers+0x1f9/0x2e0 [ttm] [354436.255445] qxl_release_reserve_list+0x67/0x150 [qxl] [354436.255446] ? qxl_bo_pin+0xaa/0x190 [qxl] [354436.255448] qxl_cursor_atomic_update+0x1b0/0x2e0 [qxl] [354436.255456] drm_atomic_helper_commit_planes+0xb9/0x220 [drm_kms_helper] [354436.255459] drm_atomic_helper_commit_tail+0x2b/0x70 [drm_kms_helper] [354436.255463] commit_tail+0x67/0x70 [drm_kms_helper] [354436.255467] drm_atomic_helper_commit+0x113/0x120 [drm_kms_helper] [354436.255479] drm_atomic_commit+0x4a/0x50 [drm] [354436.255482] drm_atomic_helper_update_plane+0xe9/0x100 [drm_kms_helper] [354436.255490] __setplane_atomic+0xd3/0x120 [drm] [354436.255498] drm_mode_cursor_universal+0x142/0x270 [drm] [354436.255506] drm_mode_cursor_common+0xcb/0x220 [drm] [354436.255513] ? drm_mode_cursor_ioctl+0x60/0x60 [drm] [354436.255520] drm_mode_cursor2_ioctl+0xe/0x10 [drm] [354436.255526] drm_ioctl_kernel+0xb0/0x100 [drm] [354436.255527] ? ___sys_recvmsg+0x16c/0x200 [354436.255533] drm_ioctl+0x233/0x410 [drm] [354436.255540] ? drm_mode_cursor_ioctl+0x60/0x60 [drm] [354436.255542] ? timerqueue_add+0x57/0x90 [354436.255544] ? enqueue_hrtimer+0x3c/0x90 [354436.255546] do_vfs_ioctl+0xa9/0x640 [354436.255547] ? fput+0x13/0x20 [354436.255548] ? __sys_recvmsg+0x88/0xa0 [354436.255550] ksys_ioctl+0x67/0x90 [354436.255551] __x64_sys_ioctl+0x1a/0x20 [354436.255553] do_syscall_64+0x5a/0x140 [354436.255554] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [354436.255555] RIP: 0033:0x7ffad14d3417 [354436.255559] Code: Bad RIP value. [354436.255560] RSP: 002b:00007ffdd5679978 EFLAGS: 00003246 ORIG_RAX: 0000000000000010 [354436.255561] RAX: ffffffffffffffda RBX: 000056428a474610 RCX: 00007ffad14d3417 [354436.255561] RDX: 00007ffdd56799b0 RSI: 00000000c02464bb RDI: 000000000000000e [354436.255562] RBP: 00007ffdd56799b0 R08: 0000000000000040 R09: 0000000000000010 [354436.255562] R10: 000000000000003f R11: 0000000000003246 R12: 00000000c02464bb [354436.255563] R13: 000000000000000e R14: 0000000000000000 R15: 000056428a4721d0 [354436.255599] INFO: task kworker/1:0:27625 blocked for more than 483 seconds. [354436.256802] Not tainted 5.2.0-050200rc1-generic #201905191930 [354436.257874] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [354436.278727] kworker/1:0 D 0 27625 2 0x80004000 [354436.278735] Workqueue: events qxl_client_monitors_config_work_func [qxl] [354436.278736] Call Trace: [354436.278742] __schedule+0x2ba/0x650 [354436.278743] schedule+0x2d/0x90 [354436.278745] schedule_preempt_disabled+0xe/0x10 [354436.278746] __ww_mutex_lock.isra.11+0x3e0/0x750 [354436.278747] ? __switch_to_asm+0x34/0x70 [354436.278748] ? __switch_to_asm+0x40/0x70 [354436.278749] ? __switch_to_asm+0x40/0x70 [354436.278750] __ww_mutex_lock_slowpath+0x16/0x20 [354436.278751] ww_mutex_lock+0x34/0x50 [354436.278764] drm_modeset_lock+0x35/0xb0 [drm] [354436.278772] drm_modeset_lock_all_ctx+0x5d/0xe0 [drm] [354436.278779] drm_modeset_lock_all+0x5e/0xb0 [drm] [354436.278781] qxl_display_read_client_monitors_config+0x1e1/0x370 [qxl] [354436.278783] qxl_client_monitors_config_work_func+0x15/0x20 [qxl] [354436.278785] process_one_work+0x20f/0x410 [354436.278786] worker_thread+0x34/0x400 [354436.278787] kthread+0x120/0x140 [354436.278788] ? process_one_work+0x410/0x410 [354436.278789] ? __kthread_parkme+0x70/0x70 [354436.278790] ret_from_fork+0x35/0x40 [354557.088600] INFO: task Xorg:920 blocked for more than 604 seconds. [354557.089689] Not tainted 5.2.0-050200rc1-generic #201905191930 [354557.090759] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [354557.092075] Xorg D 0 920 854 0x00404004 [354557.092077] Call Trace: [354557.092083] __schedule+0x2ba/0x650 [354557.092085] schedule+0x2d/0x90 [354557.092086] schedule_preempt_disabled+0xe/0x10 [354557.092087] __ww_mutex_lock.isra.11+0x3e0/0x750 [354557.092089] __ww_mutex_lock_slowpath+0x16/0x20 [354557.092089] ww_mutex_lock+0x34/0x50 [354557.092095] ttm_eu_reserve_buffers+0x1f9/0x2e0 [ttm] [354557.092098] qxl_release_reserve_list+0x67/0x150 [qxl] [354557.092100] ? qxl_bo_pin+0xaa/0x190 [qxl] [354557.092102] qxl_cursor_atomic_update+0x1b0/0x2e0 [qxl] [354557.092110] drm_atomic_helper_commit_planes+0xb9/0x220 [drm_kms_helper] [354557.092114] drm_atomic_helper_commit_tail+0x2b/0x70 [drm_kms_helper] [354557.092117] commit_tail+0x67/0x70 [drm_kms_helper] [354557.092121] drm_atomic_helper_commit+0x113/0x120 [drm_kms_helper] [354557.092133] drm_atomic_commit+0x4a/0x50 [drm] [354557.092137] drm_atomic_helper_update_plane+0xe9/0x100 [drm_kms_helper] [354557.092145] __setplane_atomic+0xd3/0x120 [drm] [354557.092154] drm_mode_cursor_universal+0x142/0x270 [drm] [354557.092162] drm_mode_cursor_common+0xcb/0x220 [drm] [354557.092170] ? drm_mode_cursor_ioctl+0x60/0x60 [drm] [354557.092179] drm_mode_cursor2_ioctl+0xe/0x10 [drm] [354557.092185] drm_ioctl_kernel+0xb0/0x100 [drm] [354557.092187] ? ___sys_recvmsg+0x16c/0x200 [354557.092193] drm_ioctl+0x233/0x410 [drm] [354557.092201] ? drm_mode_cursor_ioctl+0x60/0x60 [drm] [354557.092203] ? timerqueue_add+0x57/0x90 [354557.092205] ? enqueue_hrtimer+0x3c/0x90 [354557.092207] do_vfs_ioctl+0xa9/0x640 [354557.092208] ? fput+0x13/0x20 [354557.092209] ? __sys_recvmsg+0x88/0xa0 [354557.092210] ksys_ioctl+0x67/0x90 [354557.092212] __x64_sys_ioctl+0x1a/0x20 [354557.092213] do_syscall_64+0x5a/0x140 [354557.092215] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [354557.092216] RIP: 0033:0x7ffad14d3417 [354557.092220] Code: Bad RIP value. [354557.092221] RSP: 002b:00007ffdd5679978 EFLAGS: 00003246 ORIG_RAX: 0000000000000010 [354557.092222] RAX: ffffffffffffffda RBX: 000056428a474610 RCX: 00007ffad14d3417 [354557.092223] RDX: 00007ffdd56799b0 RSI: 00000000c02464bb RDI: 000000000000000e [354557.092223] RBP: 00007ffdd56799b0 R08: 0000000000000040 R09: 0000000000000010 [354557.092223] R10: 000000000000003f R11: 0000000000003246 R12: 00000000c02464bb [354557.092224] R13: 000000000000000e R14: 0000000000000000 R15: 000056428a4721d0 [354557.092259] INFO: task kworker/1:0:27625 blocked for more than 604 seconds. [354557.093464] Not tainted 5.2.0-050200rc1-generic #201905191930 [354557.094520] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [354557.095834] kworker/1:0 D 0 27625 2 0x80004000 [354557.095838] Workqueue: events qxl_client_monitors_config_work_func [qxl] [354557.095839] Call Trace: [354557.095841] __schedule+0x2ba/0x650 [354557.095843] schedule+0x2d/0x90 [354557.095844] schedule_preempt_disabled+0xe/0x10 [354557.095845] __ww_mutex_lock.isra.11+0x3e0/0x750 [354557.095846] ? __switch_to_asm+0x34/0x70 [354557.095847] ? __switch_to_asm+0x40/0x70 [354557.095848] ? __switch_to_asm+0x40/0x70 [354557.095849] __ww_mutex_lock_slowpath+0x16/0x20 [354557.095850] ww_mutex_lock+0x34/0x50 [354557.095858] drm_modeset_lock+0x35/0xb0 [drm] [354557.095866] drm_modeset_lock_all_ctx+0x5d/0xe0 [drm] [354557.095874] drm_modeset_lock_all+0x5e/0xb0 [drm] [354557.095876] qxl_display_read_client_monitors_config+0x1e1/0x370 [qxl] [354557.095878] qxl_client_monitors_config_work_func+0x15/0x20 [qxl] [354557.095880] process_one_work+0x20f/0x410 [354557.095881] worker_thread+0x34/0x400 [354557.095882] kthread+0x120/0x140 [354557.095883] ? process_one_work+0x410/0x410 [354557.095884] ? __kthread_parkme+0x70/0x70 [354557.095885] ret_from_fork+0x35/0x40
Please contact me if more information is needed.
Best regards, Jaak Ristioja