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kvm: panic: Sentry detected stuck tasks (14)

Status: fixed on 2023/08/08 01:03
Fix commit: 118a17d92dcf kernfs: set DenySpliceIn for DynamicBytesFD
First crash: 486d, last: 481d
▶ ▼ Similar bugs (20)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
gvisor kvm: panic: Sentry detected stuck tasks (2) C 66 1165d 1328d 14/26 fixed on 2021/09/25 08:25
gvisor kvm: panic: Sentry detected stuck tasks (7) 1 919d 912d 14/26 fixed on 2022/06/09 21:04
gvisor kvm: panic: Sentry detected stuck tasks (19) 3 378d 377d 26/26 fixed on 2023/11/15 20:33
gvisor kvm: panic: Sentry detected stuck tasks (23) 1 252d 252d 0/26 auto-obsoleted due to no activity on 2024/06/25 13:36
gvisor kvm: panic: Sentry detected stuck tasks C 152 1343d 1358d 14/26 fixed on 2021/03/24 13:21
gvisor kvm: panic: Sentry detected stuck tasks (6) 15 1001d 1012d 14/26 fixed on 2022/03/01 23:36
gvisor kvm: panic: Sentry detected stuck tasks (18) C 3 390d 395d 26/26 fixed on 2023/11/03 12:12
gvisor kvm: panic: Sentry detected stuck tasks (4) C 627 1082d 1109d 14/26 fixed on 2021/12/10 13:30
gvisor kvm: panic: Sentry detected stuck tasks (10) 3 742d 760d 14/26 fixed on 2022/11/30 11:09
gvisor kvm: panic: Sentry detected stuck tasks (22) C 8 357d 367d 26/26 fixed on 2023/12/12 09:56
gvisor kvm: panic: Sentry detected stuck tasks (8) 1 838d 838d 0/26 closed as invalid on 2022/08/11 16:05
gvisor kvm: panic: Sentry detected stuck tasks (11) 1 724d 724d 0/26 closed as invalid on 2022/12/05 18:51
gvisor kvm: panic: Sentry detected stuck tasks (21) C 2 372d 374d 26/26 fixed on 2023/11/21 23:47
gvisor kvm: panic: Sentry detected stuck tasks (15) C 186 466d 469d 26/26 fixed on 2023/08/19 00:49
gvisor kvm: panic: Sentry detected stuck tasks (20) C 2 376d 376d 26/26 fixed on 2023/11/17 11:27
gvisor kvm: panic: Sentry detected stuck tasks (5) C 65 1013d 1074d 14/26 fixed on 2022/02/18 08:00
gvisor kvm: panic: Sentry detected stuck tasks (9) 2 808d 810d 14/26 fixed on 2022/09/20 07:30
gvisor kvm: panic: Sentry detected stuck tasks (3) 1 1127d 1127d 0/26 closed as invalid on 2021/10/27 19:47
gvisor kvm: panic: Sentry detected stuck tasks (12) 193 535d 698d 26/26 fixed on 2023/06/10 02:45
gvisor kvm: panic: Sentry detected stuck tasks (17) 14 415d 445d 26/26 fixed on 2023/10/09 12:22

Sample crash report:
panic: Sentry detected 1 stuck task(s):
	Task tid: 2803 (goroutine 48075), entered RunSys state 3m15.07s 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 130 [running]:
panic({0x1127920, 0xc005039630})
	GOROOT/src/runtime/panic.go:987 +0x3bb fp=0xc000579c68 sp=0xc000579ba8 pc=0x436d7b
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).doAction(0xc000579d90?, 0x13a9ea5?, 0x50?, 0xc000579d90)
	pkg/sentry/watchdog/watchdog.go:379 +0x339 fp=0xc000579d28 sp=0xc000579c68 pc=0xb35879
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).report(0xc000136600, 0xc003098150, 0x80?, {0xc000120cf0?})
	pkg/sentry/watchdog/watchdog.go:338 +0x24e fp=0xc000579e58 sp=0xc000579d28 pc=0xb3546e
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).runTurn(0xc000136600)
	pkg/sentry/watchdog/watchdog.go:320 +0x517 fp=0xc000579f58 sp=0xc000579e58 pc=0xb35137
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).loop(0xc000136600)
	pkg/sentry/watchdog/watchdog.go:255 +0x29 fp=0xc000579fc8 sp=0xc000579f58 pc=0xb34b89
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start.func2()
	pkg/sentry/watchdog/watchdog.go:206 +0x26 fp=0xc000579fe0 sp=0xc000579fc8 pc=0xb34666
runtime.goexit()
	src/runtime/asm_amd64.s:1598 +0x1 fp=0xc000579fe8 sp=0xc000579fe0 pc=0x46d821
created by gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start
	pkg/sentry/watchdog/watchdog.go:206 +0x1d6

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/07/28 19:26 gvisor 3924579214c2 92476829 console log report syz ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2023/07/28 19:23 gvisor 3924579214c2 92476829 .config console log report syz ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2023/08/03 08:44 gvisor 17e10cc47df7 39a91c18 .config console log report info ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2023/08/02 02:03 gvisor ab7259268b10 df07ffe8 .config console log report info ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
* Struck through repros no longer work on HEAD.