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kvm: panic: Sentry detected stuck tasks (28)

Status: fixed on 2025/07/10 09:16
Fix commit: 973b2f23e566 Check for fatal signals and reset watchdog during MM.mapASLocked().
First crash: 321d, last: 316d
▶ ▼ Similar bugs (26)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
gvisor kvm: panic: Sentry detected stuck tasks (2) -1 C 66 1683d 1846d 14/26 fixed on 2021/09/25 08:25
gvisor kvm: panic: Sentry detected stuck tasks (26) -1 C 3 367d 368d 0/26 closed as invalid on 2025/04/25 22:43
gvisor kvm: panic: Sentry detected stuck tasks (7) -1 1 1438d 1430d 14/26 fixed on 2022/06/09 21:04
gvisor kvm: panic: Sentry detected stuck tasks (19) -1 3 896d 895d 26/26 fixed on 2023/11/15 20:33
gvisor kvm: panic: Sentry detected stuck tasks (23) -1 1 770d 770d 0/26 auto-obsoleted due to no activity on 2024/06/25 13:36
gvisor kvm: panic: Sentry detected stuck tasks -1 C 152 1861d 1877d 14/26 fixed on 2021/03/24 13:21
gvisor kvm: panic: Sentry detected stuck tasks (24) -1 C 9 504d 547d 26/26 fixed on 2024/12/11 10:55
gvisor kvm: panic: Sentry detected stuck tasks (6) -1 15 1519d 1530d 14/26 fixed on 2022/03/01 23:36
gvisor kvm: panic: Sentry detected stuck tasks (18) -1 C 3 909d 914d 26/26 fixed on 2023/11/03 12:12
gvisor kvm: panic: Sentry detected stuck tasks (4) -1 C 627 1600d 1627d 14/26 fixed on 2021/12/10 13:30
gvisor kvm: panic: Sentry detected stuck tasks (27) -1 C 5 365d 367d 26/26 fixed on 2025/05/02 08:36
gvisor kvm: panic: Sentry detected stuck tasks (10) -1 3 1261d 1278d 14/26 fixed on 2022/11/30 11:09
gvisor kvm: panic: Sentry detected stuck tasks (22) -1 C 8 875d 885d 26/26 fixed on 2023/12/12 09:56
gvisor kvm: panic: Sentry detected stuck tasks (8) -1 1 1356d 1356d 0/26 closed as invalid on 2022/08/11 16:05
gvisor kvm: panic: Sentry detected stuck tasks (11) -1 1 1242d 1242d 0/26 closed as invalid on 2022/12/05 18:51
gvisor kvm: panic: Sentry detected stuck tasks (21) -1 C 2 890d 892d 26/26 fixed on 2023/11/21 23:47
gvisor kvm: panic: Sentry detected stuck tasks (15) -1 C 186 984d 987d 26/26 fixed on 2023/08/19 00:49
gvisor kvm: panic: Sentry detected stuck tasks (20) -1 C 2 894d 894d 26/26 fixed on 2023/11/17 11:27
gvisor kvm: panic: Sentry detected stuck tasks (29) -1 C 3 162d 163d 26/26 fixed on 2025/11/19 02:01
gvisor kvm: panic: Sentry detected stuck tasks (5) -1 C 65 1531d 1592d 14/26 fixed on 2022/02/18 08:00
gvisor kvm: panic: Sentry detected stuck tasks (25) -1 C 3409 377d 472d 26/26 fixed on 2025/04/24 21:45
gvisor kvm: panic: Sentry detected stuck tasks (9) -1 2 1326d 1328d 14/26 fixed on 2022/09/20 07:30
gvisor kvm: panic: Sentry detected stuck tasks (3) -1 1 1645d 1645d 0/26 closed as invalid on 2021/10/27 19:47
gvisor kvm: panic: Sentry detected stuck tasks (12) -1 193 1053d 1216d 26/26 fixed on 2023/06/10 02:45
gvisor kvm: panic: Sentry detected stuck tasks (14) -1 syz 4 999d 1004d 26/26 fixed on 2023/08/08 01:03
gvisor kvm: panic: Sentry detected stuck tasks (17) -1 14 933d 963d 26/26 fixed on 2023/10/09 12:22

Sample crash report:
panic: Sentry detected 1 stuck task(s):
		Task tid: 16 (goroutine 95), entered RunSys state 3m1.1s ago.
	Search for 'goroutine <id>' in the stack dump to find the offending goroutine(s)
	Stack for running G's are skipped while panicking.

goroutine 60 gp=0xc000602fc0 m=18 mp=0xc000a98008 [running]:
panic({0x1169260?, 0xc000a14e50?})
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:811 +0x168 fp=0xc0006d5c80 sp=0xc0006d5bd0 pc=0x478768
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).doAction(0xc0006d5da0?, 0x1440920?, 0x50?, 0xc0006d5da0)
	pkg/sentry/watchdog/watchdog.go:376 +0x348 fp=0xc0006d5d48 sp=0xc0006d5c80 pc=0xc57788
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).report(0xc000180080, 0xc0006ba9f0, 0x1, {0x2f?})
	pkg/sentry/watchdog/watchdog.go:335 +0x24f fp=0xc0006d5e78 sp=0xc0006d5d48 pc=0xc5736f
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).runTurn(0xc000180080)
	pkg/sentry/watchdog/watchdog.go:317 +0x47b fp=0xc0006d5f58 sp=0xc0006d5e78 pc=0xc5703b
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).loop(0xc000180080)
	pkg/sentry/watchdog/watchdog.go:254 +0x25 fp=0xc0006d5fc8 sp=0xc0006d5f58 pc=0xc56b25
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start.gowrap2()
	pkg/sentry/watchdog/watchdog.go:205 +0x25 fp=0xc0006d5fe0 sp=0xc0006d5fc8 pc=0xc56685
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc0006d5fe8 sp=0xc0006d5fe0 pc=0x481581
created by gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start in goroutine 1
	pkg/sentry/watchdog/watchdog.go:205 +0x1d8

Crashes (11):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/06/12 07:00 gvisor cbf278951e7e 98683f8f console log report syz / log C ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2025/06/12 06:00 gvisor cbf278951e7e 98683f8f console log report syz / log C ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2025/06/12 05:37 gvisor cbf278951e7e 98683f8f .config console log report syz / log C ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2025/06/12 05:00 gvisor cbf278951e7e 98683f8f console log report syz / log C ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2025/06/12 04:27 gvisor cbf278951e7e 98683f8f .config console log report syz / log C ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2025/06/11 22:55 gvisor 84c77aa8ad7e 98683f8f .config console log report syz / log C ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2025/06/11 22:39 gvisor 84c77aa8ad7e 98683f8f .config console log report syz / log C ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2025/06/16 15:22 gvisor 03a93e960bfc d1716036 console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2025/06/16 15:18 gvisor 03a93e960bfc d1716036 .config console log report info ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2025/06/11 16:36 gvisor 84c77aa8ad7e 98683f8f .config console log report info ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2025/06/11 16:36 gvisor 84c77aa8ad7e 98683f8f console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
* Struck through repros no longer work on HEAD.