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kvm: panic: Sentry detected stuck tasks (29)

Status: fixed on 2025/11/19 02:01
Fix commit: 2d94e669ae96 Avoid netlink deadlock
First crash: 249d, last: 248d
▶ ▼ 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 1769d 1932d 14/26 fixed on 2021/09/25 08:25
gvisor kvm: panic: Sentry detected stuck tasks (26) -1 C 3 453d 454d 0/26 closed as invalid on 2025/04/25 22:43
gvisor kvm: panic: Sentry detected stuck tasks (7) -1 1 1523d 1516d 14/26 fixed on 2022/06/09 21:04
gvisor kvm: panic: Sentry detected stuck tasks (19) -1 3 982d 981d 26/26 fixed on 2023/11/15 20:33
gvisor kvm: panic: Sentry detected stuck tasks (23) -1 1 856d 856d 0/26 auto-obsoleted due to no activity on 2024/06/25 13:36
gvisor kvm: panic: Sentry detected stuck tasks -1 C 152 1947d 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 1605d 1616d 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 1686d 1713d 14/26 fixed on 2021/12/10 13:30
gvisor kvm: panic: Sentry detected stuck tasks (27) -1 C 5 451d 453d 26/26 fixed on 2025/05/02 08:36
gvisor kvm: panic: Sentry detected stuck tasks (10) -1 3 1346d 1364d 14/26 fixed on 2022/11/30 11:09
gvisor kvm: panic: Sentry detected stuck tasks (22) -1 C 8 961d 971d 26/26 fixed on 2023/12/12 09:56
gvisor kvm: panic: Sentry detected stuck tasks (8) -1 1 1442d 1442d 0/26 closed as invalid on 2022/08/11 16:05
gvisor kvm: panic: Sentry detected stuck tasks (11) -1 1 1328d 1328d 0/26 closed as invalid on 2022/12/05 18:51
gvisor kvm: panic: Sentry detected stuck tasks (21) -1 C 2 976d 978d 26/26 fixed on 2023/11/21 23:47
gvisor kvm: panic: Sentry detected stuck tasks (15) -1 C 186 1070d 1073d 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 980d 980d 26/26 fixed on 2023/11/17 11:27
gvisor kvm: panic: Sentry detected stuck tasks (5) -1 C 65 1617d 1678d 14/26 fixed on 2022/02/18 08:00
gvisor kvm: panic: Sentry detected stuck tasks (25) -1 C 3409 462d 558d 26/26 fixed on 2025/04/24 21:45
gvisor kvm: panic: Sentry detected stuck tasks (9) -1 2 1412d 1414d 14/26 fixed on 2022/09/20 07:30
gvisor kvm: panic: Sentry detected stuck tasks (3) -1 1 1731d 1731d 0/26 closed as invalid on 2021/10/27 19:47
gvisor kvm: panic: Sentry detected stuck tasks (12) -1 193 1139d 1302d 26/26 fixed on 2023/06/10 02:45
gvisor kvm: panic: Sentry detected stuck tasks (14) -1 syz 4 1085d 1090d 26/26 fixed on 2023/08/08 01:03
gvisor kvm: panic: Sentry detected stuck tasks (17) -1 14 1019d 1049d 26/26 fixed on 2023/10/09 12:22

Sample crash report:
panic: Sentry detected 2 stuck task(s):
		Task tid: 86 (goroutine 844), entered RunSys state 3m14.76s ago.
		Task tid: 89 (goroutine 1010), entered RunSys state 3m0.15s 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 114 gp=0xc000880540 m=35 mp=0xc004380008 [running]:
panic({0x11ce4e0?, 0xc00032cd00?})
	GOROOT/src/runtime/panic.go:811 +0x168 fp=0xc000792c80 sp=0xc000792bd0 pc=0x4785e8
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).doAction(0xc000792da0?, 0x14b7714?, 0x42?, 0xc000792da0)
	pkg/sentry/watchdog/watchdog.go:371 +0x348 fp=0xc000792d48 sp=0xc000792c80 pc=0xd1fc88
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).report(0xc00014e080, 0xc002de2810, 0x1, {0x2f?})
	pkg/sentry/watchdog/watchdog.go:330 +0x24f fp=0xc000792e78 sp=0xc000792d48 pc=0xd1f86f
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).runTurn(0xc00014e080)
	pkg/sentry/watchdog/watchdog.go:312 +0x47b fp=0xc000792f58 sp=0xc000792e78 pc=0xd1f53b
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).loop(0xc00014e080)
	pkg/sentry/watchdog/watchdog.go:249 +0x25 fp=0xc000792fc8 sp=0xc000792f58 pc=0xd1f025
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start.gowrap2()
	pkg/sentry/watchdog/watchdog.go:200 +0x25 fp=0xc000792fe0 sp=0xc000792fc8 pc=0xd1eb85
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000792fe8 sp=0xc000792fe0 pc=0x481401
created by gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start in goroutine 1
	pkg/sentry/watchdog/watchdog.go:200 +0x1d8

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/11/17 05:38 gvisor 9fc4303aefe1 f7988ea4 console log report syz / log C ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2025/11/17 01:19 gvisor 9fc4303aefe1 f7988ea4 .config console log report syz / log C ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2025/11/16 04:44 gvisor 9fc4303aefe1 f7988ea4 .config console log report info ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
* Struck through repros no longer work on HEAD.