INFO: task hung in vivid_fop_release (5)

Status: auto-obsoleted due to no activity on 2026/10/02 03:08
Subsystems: media
Labels: prio:high
[Documentation on labels]
First crash: 101d, last: 101d
▶ ▼ ✨ AI Jobs (1)
ID Workflow Result Correct Bug Created Started Finished Revision
35352124 assessment-security DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ❌ RemoteTrigger: ❌ Unprivileged: ✅ UserNamespace: ❌ VMGuestTrigger: ❌ VMHostTrigger: ❌ ❓ INFO: task hung in vivid_fop_release (5) 2026/07/05 09:49 2026/07/05 09:49 2026/07/05 10:38 93f57954
▶ ▼ Similar bugs (5)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in vivid_fop_release media 1 1 2413d 2413d 0/29 auto-closed as invalid on 2020/06/02 22:11
upstream INFO: task hung in vivid_fop_release (4) media prio:low 1 1 196d 196d 0/29 auto-obsoleted due to no activity on 2026/06/28 19:30
upstream INFO: task hung in vivid_fop_release (2) media 1 1 698d 698d 0/29 auto-obsoleted due to no activity on 2025/02/12 03:48
linux-5.15 INFO: task hung in vivid_fop_release origin:lts-only 1 syz inconclusive 3 46d 352d 0/3 upstream: reported syz repro on 2025/10/26 00:40
upstream INFO: task hung in vivid_fop_release (3) media 1 1 285d 285d 0/29 auto-obsoleted due to no activity on 2026/03/02 14:42

Sample crash report:
INFO: task syz.8.6902:28338 blocked for more than 144 seconds.
      Tainted: G             L      syzkaller #0
      Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.6902      state:D
 stack:22720 pid:28338 tgid:28335 ppid:26706  task_flags:0x40054c flags:0x00080003
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5510 [inline]
 __schedule+0x17d9/0x56c0 kernel/sched/core.c:7234
 __schedule_loop kernel/sched/core.c:7311 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7326
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383
 __mutex_lock_common kernel/locking/mutex.c:726 [inline]
 __mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821
 vivid_fop_release+0x6c/0xab0 drivers/media/test-drivers/vivid/vivid-core.c:645
 v4l2_release+0x195/0x350 drivers/media/v4l2-core/v4l2-dev.c:468
 __fput+0x418/0xa50 fs/file_table.c:512
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x73a/0x2360 kernel/exit.c:1004
 do_group_exit+0x22d/0x2f0 kernel/exit.c:1147
 get_signal+0x121b/0x12c0 kernel/signal.c:3038
 arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
 exit_to_user_mode_loop+0x104/0x730 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
 do_syscall_64+0x353/0x580 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f176099de59
RSP: 002b:00007f175ebd50e8 EFLAGS: 00000246

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/07/04 03:04 upstream d2c9a99135da fcece630 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in vivid_fop_release
* Struck through repros no longer work on HEAD.