https://bugzilla.kernel.org/show_bug.cgi?id=203033
Bug ID: 203033 Summary: nouveau hung task Product: Drivers Version: 2.5 Kernel Version: 5.0.0 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: mcroce@redhat.com Regression: No
The GUI freezes randomly with nouveau with this error in the syslog:
INFO: task kworker/u16:4:14755 blocked for more than 120 seconds. Not tainted 5.0.0-matteo #28 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u16:4 D 0 14755 2 0x80000000 Workqueue: events_unbound nv50_disp_atomic_commit_work [nouveau] Call Trace: ? __schedule+0x1a6/0x6c0 schedule+0x2c/0x70 schedule_timeout+0x268/0x380 ? nvif_notify_get+0x94/0xa0 [nouveau] dma_fence_default_wait+0x204/0x270 ? dma_fence_release+0x90/0x90 dma_fence_wait_timeout+0xdd/0x100 drm_atomic_helper_wait_for_fences+0x3a/0xc0 [drm_kms_helper] nv50_disp_atomic_commit_tail+0x7c/0x850 [nouveau] ? __switch_to_asm+0x34/0x70 ? __switch_to_asm+0x40/0x70 ? __switch_to_asm+0x40/0x70 ? __switch_to_asm+0x40/0x70 process_one_work+0x1fa/0x400 worker_thread+0x2d/0x3d0 ? process_one_work+0x400/0x400 kthread+0x113/0x130 ? kthread_create_on_node+0x60/0x60 ret_from_fork+0x35/0x40