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kvm: panic: Sentry detected stuck tasks (4)

Status: fixed on 2021/12/10 13:30
Reported-by: syzbot+773e19ca2574516c9e00@syzkaller.appspotmail.com
Fix commit: 4d29819e13a1 pipe: have separate notifiers for readers and writers
First crash: 1116d, last: 1082d
▶ ▼ 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 (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 (14) syz 4 481d 486d 26/26 fixed on 2023/08/08 01:03
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: 23 (goroutine 212), entered RunSys state 3m33.12s 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 [running]:
panic(0x10eb2c0, 0xc00029bad0)
	GOROOT/src/runtime/panic.go:1065 +0x565 fp=0xc000707c60 sp=0xc000707b98 pc=0x437c65
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).doAction(0xc00016c100, 0x1, 0x1, 0xc000707da0)
	pkg/sentry/watchdog/watchdog.go:380 +0x565 fp=0xc000707d30 sp=0xc000707c60 pc=0xc16c65
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).report(0xc00016c100, 0xc000eb8000, 0x10c01, 0xd18a646480)
	pkg/sentry/watchdog/watchdog.go:339 +0x315 fp=0xc000707e68 sp=0xc000707d30 pc=0xc16635
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).runTurn(0xc00016c100)
	pkg/sentry/watchdog/watchdog.go:321 +0x52b fp=0xc000707f58 sp=0xc000707e68 pc=0xc1624b
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).loop(0xc00016c100)
	pkg/sentry/watchdog/watchdog.go:256 +0x34 fp=0xc000707fd8 sp=0xc000707f58 pc=0xc15c54
runtime.goexit()
	src/runtime/asm_amd64.s:1371 +0x1 fp=0xc000707fe0 sp=0xc000707fd8 pc=0x472861
created by gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start
	pkg/sentry/watchdog/watchdog.go:207 +0x1b1

Crashes (627):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/12/10 08:42 gvisor 7f4b03068f03 4d4ce9bc .config console log report syz C ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/10 08:39 gvisor 7f4b03068f03 4d4ce9bc .config console log report syz C ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2021/12/09 19:38 gvisor dedb7e6ca10a b54aa474 .config console log report syz C ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 18:16 gvisor dedb7e6ca10a b54aa474 .config console log report syz C ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 12:49 gvisor dedb7e6ca10a a4a2a501 .config console log report syz C ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2021/12/09 10:13 gvisor dedb7e6ca10a a4a2a501 .config console log report syz C ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2021/12/10 12:23 gvisor 7f4b03068f03 4d4ce9bc .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/10 11:56 gvisor 7f4b03068f03 4d4ce9bc .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/10 10:52 gvisor 7f4b03068f03 4d4ce9bc .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/10 10:30 gvisor 7f4b03068f03 4d4ce9bc .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/10 09:29 gvisor 7f4b03068f03 4d4ce9bc .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/10 07:02 gvisor 7f4b03068f03 4d4ce9bc .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/10 06:37 gvisor 7f4b03068f03 4d4ce9bc .config console log report info ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2021/12/10 05:36 gvisor 7f4b03068f03 4d4ce9bc .config console log report info ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2021/12/10 05:30 gvisor 7f4b03068f03 4d4ce9bc .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/10 04:29 gvisor 7f4b03068f03 4d4ce9bc .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/10 03:28 gvisor 7f4b03068f03 4d4ce9bc .config console log report info ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2021/12/10 02:46 gvisor 7f4b03068f03 4d4ce9bc .config console log report info ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2021/12/10 01:33 gvisor 7f4b03068f03 4d4ce9bc .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/10 00:16 gvisor dedb7e6ca10a b54aa474 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 23:12 gvisor dedb7e6ca10a b54aa474 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 22:21 gvisor dedb7e6ca10a b54aa474 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 21:28 gvisor dedb7e6ca10a b54aa474 .config console log report info ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2021/12/09 21:10 gvisor dedb7e6ca10a b54aa474 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 20:05 gvisor dedb7e6ca10a b54aa474 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 19:20 gvisor dedb7e6ca10a b54aa474 .config console log report info ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2021/12/09 17:52 gvisor dedb7e6ca10a b54aa474 .config console log report info ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2021/12/09 16:40 gvisor dedb7e6ca10a b54aa474 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 16:14 gvisor dedb7e6ca10a b54aa474 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 15:55 gvisor dedb7e6ca10a b54aa474 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 15:36 gvisor dedb7e6ca10a b54aa474 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 15:20 gvisor dedb7e6ca10a b54aa474 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 14:58 gvisor dedb7e6ca10a b54aa474 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 14:35 gvisor dedb7e6ca10a b54aa474 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 14:04 gvisor dedb7e6ca10a b54aa474 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 13:39 gvisor dedb7e6ca10a b54aa474 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 13:16 gvisor dedb7e6ca10a b54aa474 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 11:31 gvisor dedb7e6ca10a a4a2a501 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 11:10 gvisor dedb7e6ca10a a4a2a501 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 10:53 gvisor dedb7e6ca10a a4a2a501 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 10:34 gvisor dedb7e6ca10a a4a2a501 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 09:50 gvisor dedb7e6ca10a a4a2a501 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 09:24 gvisor dedb7e6ca10a a4a2a501 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 09:01 gvisor dedb7e6ca10a a4a2a501 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 08:57 gvisor dedb7e6ca10a a4a2a501 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 08:57 gvisor dedb7e6ca10a a4a2a501 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 08:56 gvisor dedb7e6ca10a a4a2a501 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/12/09 08:56 gvisor dedb7e6ca10a a4a2a501 .config console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2021/11/12 22:50 gvisor 7d9bdaf7f86c 83f5c9b5 .config console log report info ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2021/11/06 00:55 gvisor ce4f4283badb 4c1be0be .config console log report info ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
* Struck through repros no longer work on HEAD.