Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: xserver-xorg-video-nouveau (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1788044
Title:
task kworker blocked for more than 120 seconds nouveau
Status in linux package in Ubuntu:
Incomplete
Status in xserver-xorg-video-nouveau package in Ubuntu:
Confirmed
Bug description:
I was using chromium when the whole system GUI stopped responding at
15:42. This corresponds to the system journal at that point:
Aug 20 15:42:56 dh3930 kernel: nouveau 0000:01:00.0: fifo: SCHED_ERROR 0a
[CTXSW_TIMEOUT]
Aug 20 15:42:56 dh3930 kernel: nouveau 0000:01:00.0: fifo: runlist 0:
scheduled for recovery
Aug 20 15:42:56 dh3930 kernel: nouveau 0000:01:00.0: fifo: channel 15: killed
Aug 20 15:42:56 dh3930 kernel: nouveau 0000:01:00.0: fifo: engine 0:
scheduled for recovery
Aug 20 15:42:56 dh3930 kernel: nouveau 0000:01:00.0: compiz[7682]: channel 15
killed!
Aug 20 15:45:50 dh3930 kernel: INFO: task kworker/u24:4:14623 blocked for
more than 120 seconds.
Aug 20 15:45:50 dh3930 kernel: Not tainted 4.15.0-32-generic #35-Ubuntu
Aug 20 15:45:50 dh3930 kernel: "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Aug 20 15:45:50 dh3930 kernel: kworker/u24:4 D 0 14623 2 0x80000000
Aug 20 15:45:50 dh3930 kernel: Workqueue: events_unbound
nv50_disp_atomic_commit_work [nouveau]
Aug 20 15:45:50 dh3930 kernel: Call Trace:
Aug 20 15:45:50 dh3930 kernel: __schedule+0x291/0x8a0
Aug 20 15:45:50 dh3930 kernel: schedule+0x2c/0x80
Aug 20 15:45:50 dh3930 kernel: schedule_timeout+0x1cf/0x350
Aug 20 15:45:50 dh3930 kernel: ? nvif_object_ioctl+0x47/0x50 [nouveau]
Aug 20 15:45:50 dh3930 kernel: ? nouveau_bo_rd32+0x2a/0x30 [nouveau]
Aug 20 15:45:50 dh3930 kernel: ? nv84_fence_read+0x2e/0x30 [nouveau]
Aug 20 15:45:50 dh3930 kernel: ? nouveau_fence_no_signaling+0x2a/0x80
[nouveau]
Aug 20 15:45:50 dh3930 kernel: dma_fence_default_wait+0x1c7/0x260
Aug 20 15:45:50 dh3930 kernel: ? dma_fence_release+0xa0/0xa0
Aug 20 15:45:50 dh3930 kernel: dma_fence_wait_timeout+0x3e/0xf0
Aug 20 15:45:50 dh3930 kernel: drm_atomic_helper_wait_for_fences+0x63/0xc0
[drm_kms_helper]
Aug 20 15:45:50 dh3930 kernel: nv50_disp_atomic_commit_tail+0x55/0x3b10
[nouveau]
Aug 20 15:45:50 dh3930 kernel: nv50_disp_atomic_commit_work+0x12/0x20
[nouveau]
Aug 20 15:45:50 dh3930 kernel: process_one_work+0x1de/0x410
Aug 20 15:45:50 dh3930 kernel: worker_thread+0x32/0x410
Aug 20 15:45:50 dh3930 kernel: kthread+0x121/0x140
Aug 20 15:45:50 dh3930 kernel: ? process_one_work+0x410/0x410
Aug 20 15:45:50 dh3930 kernel: ? kthread_create_worker_on_cpu+0x70/0x70
Aug 20 15:45:50 dh3930 kernel: ret_from_fork+0x35/0x40
The 'blocked for more than 120 seconds' message and call trace
repeated every ~121 seconds until I rebooted. At that point, the
following additional line appeared with the 'blocked for more than 120
seconds' message:
Aug 20 16:01:51 dh3930 kernel: nouveau 0000:01:00.0: chromium-
browse[14187]: failed to idle channel 20 [chromium-browse[14187]]
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-32-generic 4.15.0-32.35
ProcVersionSignature: Ubuntu 4.15.0-32.35-generic 4.15.18
Uname: Linux 4.15.0-32-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: david 2460 F.... pulseaudio
/dev/snd/controlC0: david 2460 F.... pulseaudio
CurrentDesktop: Unity:Unity7:ubuntu
Date: Mon Aug 20 16:07:40 2018
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=9e4f3d6a-f1b3-40c0-8c97-97d861a7ce11
InstallationDate: Installed on 2016-10-24 (664 days ago)
InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
MachineType: System manufacturer System Product Name
ProcFB: 0 nouveaufb
ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-4.15.0-32-generic
root=UUID=311cc681-166d-47bd-847d-f41c81578c1a ro rootflags=subvol=@ quiet
splash vt.handoff=1
RelatedPackageVersions:
linux-restricted-modules-4.15.0-32-generic N/A
linux-backports-modules-4.15.0-32-generic N/A
linux-firmware 1.173.1
RfKill:
SourcePackage: linux
UpgradeStatus: Upgraded to bionic on 2018-05-01 (110 days ago)
dmi.bios.date: 05/06/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4701
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: P9X79
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr4701:bd05/06/2014:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnP9X79:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
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