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kvm: panic: Sentry detected stuck tasks (21)

Status: fixed on 2023/11/21 23:47
Fix commit: c16916e7d780 Move lockMountpoint to the beginning of pivot_root.
First crash: 651d, last: 649d
▶ ▼ Similar bugs (25)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
gvisor kvm: panic: Sentry detected stuck tasks (2) -1 C 66 1442d 1605d 14/26 fixed on 2021/09/25 08:25
gvisor kvm: panic: Sentry detected stuck tasks (26) -1 C 3 126d 127d 0/26 closed as invalid on 2025/04/25 22:43
gvisor kvm: panic: Sentry detected stuck tasks (7) -1 1 1196d 1189d 14/26 fixed on 2022/06/09 21:04
gvisor kvm: panic: Sentry detected stuck tasks (19) -1 3 655d 654d 26/26 fixed on 2023/11/15 20:33
gvisor kvm: panic: Sentry detected stuck tasks (23) -1 1 529d 529d 0/26 auto-obsoleted due to no activity on 2024/06/25 13:36
gvisor kvm: panic: Sentry detected stuck tasks -1 C 152 1620d 1635d 14/26 fixed on 2021/03/24 13:21
gvisor kvm: panic: Sentry detected stuck tasks (24) -1 C 9 262d 305d 26/26 fixed on 2024/12/11 10:55
gvisor kvm: panic: Sentry detected stuck tasks (6) -1 15 1278d 1288d 14/26 fixed on 2022/03/01 23:36
gvisor kvm: panic: Sentry detected stuck tasks (18) -1 C 3 667d 672d 26/26 fixed on 2023/11/03 12:12
gvisor kvm: panic: Sentry detected stuck tasks (4) -1 C 627 1359d 1386d 14/26 fixed on 2021/12/10 13:30
gvisor kvm: panic: Sentry detected stuck tasks (27) -1 C 5 124d 125d 26/26 fixed on 2025/05/02 08:36
gvisor kvm: panic: Sentry detected stuck tasks (10) -1 3 1019d 1037d 14/26 fixed on 2022/11/30 11:09
gvisor kvm: panic: Sentry detected stuck tasks (22) -1 C 8 634d 644d 26/26 fixed on 2023/12/12 09:56
gvisor kvm: panic: Sentry detected stuck tasks (8) -1 1 1115d 1115d 0/26 closed as invalid on 2022/08/11 16:05
gvisor kvm: panic: Sentry detected stuck tasks (11) -1 1 1001d 1001d 0/26 closed as invalid on 2022/12/05 18:51
gvisor kvm: panic: Sentry detected stuck tasks (15) -1 C 186 743d 746d 26/26 fixed on 2023/08/19 00:49
gvisor kvm: panic: Sentry detected stuck tasks (28) -1 C 11 74d 79d 26/26 fixed on 2025/07/10 09:16
gvisor kvm: panic: Sentry detected stuck tasks (20) -1 C 2 653d 653d 26/26 fixed on 2023/11/17 11:27
gvisor kvm: panic: Sentry detected stuck tasks (5) -1 C 65 1290d 1351d 14/26 fixed on 2022/02/18 08:00
gvisor kvm: panic: Sentry detected stuck tasks (25) -1 C 3409 135d 231d 26/26 fixed on 2025/04/24 21:45
gvisor kvm: panic: Sentry detected stuck tasks (9) -1 2 1085d 1087d 14/26 fixed on 2022/09/20 07:30
gvisor kvm: panic: Sentry detected stuck tasks (3) -1 1 1404d 1404d 0/26 closed as invalid on 2021/10/27 19:47
gvisor kvm: panic: Sentry detected stuck tasks (12) -1 193 812d 975d 26/26 fixed on 2023/06/10 02:45
gvisor kvm: panic: Sentry detected stuck tasks (14) -1 syz 4 758d 763d 26/26 fixed on 2023/08/08 01:03
gvisor kvm: panic: Sentry detected stuck tasks (17) -1 14 692d 722d 26/26 fixed on 2023/10/09 12:22

Sample crash report:
panic: Sentry detected 2 stuck task(s):
	Task tid: 325 (goroutine 1376), entered RunSys state 3m27.43s ago.
	Task tid: 326 (goroutine 1296), entered RunSys state 3m27.48s 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 29 [running]:
panic({0x1109c40?, 0xc00080ea90?})
	GOROOT/src/runtime/panic.go:1017 +0x3ac fp=0xc000719c90 sp=0xc000719be0 pc=0x43a72c
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).doAction(0xc000719e10?, 0x1395d72?, 0x44?, 0xc000719db8)
	pkg/sentry/watchdog/watchdog.go:379 +0x385 fp=0xc000719d50 sp=0xc000719c90 pc=0xc57ac5
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).report(0xc0006c4300, 0xc000c72930, 0x80?, {0x0?})
	pkg/sentry/watchdog/watchdog.go:338 +0x285 fp=0xc000719e80 sp=0xc000719d50 pc=0xc57685
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).runTurn(0xc0006c4300)
	pkg/sentry/watchdog/watchdog.go:320 +0x585 fp=0xc000719f58 sp=0xc000719e80 pc=0xc572e5
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).loop(0xc0006c4300)
	pkg/sentry/watchdog/watchdog.go:255 +0x37 fp=0xc000719fc8 sp=0xc000719f58 pc=0xc56cb7
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start.func2()
	pkg/sentry/watchdog/watchdog.go:206 +0x25 fp=0xc000719fe0 sp=0xc000719fc8 pc=0xc56805
runtime.goexit()
	src/runtime/asm_amd64.s:1650 +0x1 fp=0xc000719fe8 sp=0xc000719fe0 pc=0x471241
created by gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start in goroutine 1
	pkg/sentry/watchdog/watchdog.go:206 +0x1ec

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/11/20 03:51 gvisor 88d35cd8f13a cb976f63 .config console log report syz C ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2023/11/18 10:52 gvisor 2ef56fee9433 cb976f63 .config console log report syz C ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
* Struck through repros no longer work on HEAD.