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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: 977d, last: 975d
▶ ▼ 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 1768d 1931d 14/26 fixed on 2021/09/25 08:25
gvisor kvm: panic: Sentry detected stuck tasks (26) -1 C 3 452d 453d 0/26 closed as invalid on 2025/04/25 22:43
gvisor kvm: panic: Sentry detected stuck tasks (7) -1 1 1522d 1515d 14/26 fixed on 2022/06/09 21:04
gvisor kvm: panic: Sentry detected stuck tasks (19) -1 3 981d 980d 26/26 fixed on 2023/11/15 20:33
gvisor kvm: panic: Sentry detected stuck tasks (23) -1 1 855d 855d 0/26 auto-obsoleted due to no activity on 2024/06/25 13:36
gvisor kvm: panic: Sentry detected stuck tasks -1 C 152 1946d 1962d 14/26 fixed on 2021/03/24 13:21
gvisor kvm: panic: Sentry detected stuck tasks (24) -1 C 9 589d 632d 26/26 fixed on 2024/12/11 10:55
gvisor kvm: panic: Sentry detected stuck tasks (6) -1 15 1604d 1615d 14/26 fixed on 2022/03/01 23:36
gvisor kvm: panic: Sentry detected stuck tasks (18) -1 C 3 994d 999d 26/26 fixed on 2023/11/03 12:12
gvisor kvm: panic: Sentry detected stuck tasks (4) -1 C 627 1685d 1712d 14/26 fixed on 2021/12/10 13:30
gvisor kvm: panic: Sentry detected stuck tasks (27) -1 C 5 450d 452d 26/26 fixed on 2025/05/02 08:36
gvisor kvm: panic: Sentry detected stuck tasks (10) -1 3 1346d 1363d 14/26 fixed on 2022/11/30 11:09
gvisor kvm: panic: Sentry detected stuck tasks (22) -1 C 8 960d 970d 26/26 fixed on 2023/12/12 09:56
gvisor kvm: panic: Sentry detected stuck tasks (8) -1 1 1441d 1441d 0/26 closed as invalid on 2022/08/11 16:05
gvisor kvm: panic: Sentry detected stuck tasks (11) -1 1 1327d 1327d 0/26 closed as invalid on 2022/12/05 18:51
gvisor kvm: panic: Sentry detected stuck tasks (15) -1 C 186 1069d 1072d 26/26 fixed on 2023/08/19 00:49
gvisor kvm: panic: Sentry detected stuck tasks (28) -1 C 11 401d 406d 26/26 fixed on 2025/07/10 09:16
gvisor kvm: panic: Sentry detected stuck tasks (20) -1 C 2 979d 979d 26/26 fixed on 2023/11/17 11:27
gvisor kvm: panic: Sentry detected stuck tasks (29) -1 C 3 247d 248d 26/26 fixed on 2025/11/19 02:01
gvisor kvm: panic: Sentry detected stuck tasks (5) -1 C 65 1616d 1677d 14/26 fixed on 2022/02/18 08:00
gvisor kvm: panic: Sentry detected stuck tasks (25) -1 C 3409 462d 557d 26/26 fixed on 2025/04/24 21:45
gvisor kvm: panic: Sentry detected stuck tasks (9) -1 2 1411d 1413d 14/26 fixed on 2022/09/20 07:30
gvisor kvm: panic: Sentry detected stuck tasks (3) -1 1 1730d 1730d 0/26 closed as invalid on 2021/10/27 19:47
gvisor kvm: panic: Sentry detected stuck tasks (12) -1 193 1138d 1301d 26/26 fixed on 2023/06/10 02:45
gvisor kvm: panic: Sentry detected stuck tasks (14) -1 syz 4 1084d 1089d 26/26 fixed on 2023/08/08 01:03
gvisor kvm: panic: Sentry detected stuck tasks (17) -1 14 1018d 1048d 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.