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kvm: panic: Sentry detected stuck tasks (20)

Status: fixed on 2023/11/17 11:27
Fix commit: 77b137ffd8ec Fix umount not unmounting all the mounts it is supposed to.
First crash: 774d, last: 774d
▶ ▼ 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 1564d 1726d 14/26 fixed on 2021/09/25 08:25
gvisor kvm: panic: Sentry detected stuck tasks (26) -1 C 3 248d 249d 0/26 closed as invalid on 2025/04/25 22:43
gvisor kvm: panic: Sentry detected stuck tasks (7) -1 1 1318d 1311d 14/26 fixed on 2022/06/09 21:04
gvisor kvm: panic: Sentry detected stuck tasks (19) -1 3 777d 775d 26/26 fixed on 2023/11/15 20:33
gvisor kvm: panic: Sentry detected stuck tasks (23) -1 1 650d 650d 0/26 auto-obsoleted due to no activity on 2024/06/25 13:36
gvisor kvm: panic: Sentry detected stuck tasks -1 C 152 1741d 1757d 14/26 fixed on 2021/03/24 13:21
gvisor kvm: panic: Sentry detected stuck tasks (24) -1 C 9 384d 427d 26/26 fixed on 2024/12/11 10:55
gvisor kvm: panic: Sentry detected stuck tasks (6) -1 15 1399d 1410d 14/26 fixed on 2022/03/01 23:36
gvisor kvm: panic: Sentry detected stuck tasks (18) -1 C 3 789d 794d 26/26 fixed on 2023/11/03 12:12
gvisor kvm: panic: Sentry detected stuck tasks (4) -1 C 627 1480d 1507d 14/26 fixed on 2021/12/10 13:30
gvisor kvm: panic: Sentry detected stuck tasks (27) -1 C 5 245d 247d 26/26 fixed on 2025/05/02 08:36
gvisor kvm: panic: Sentry detected stuck tasks (10) -1 3 1141d 1158d 14/26 fixed on 2022/11/30 11:09
gvisor kvm: panic: Sentry detected stuck tasks (22) -1 C 8 755d 766d 26/26 fixed on 2023/12/12 09:56
gvisor kvm: panic: Sentry detected stuck tasks (8) -1 1 1236d 1236d 0/26 closed as invalid on 2022/08/11 16:05
gvisor kvm: panic: Sentry detected stuck tasks (11) -1 1 1122d 1122d 0/26 closed as invalid on 2022/12/05 18:51
gvisor kvm: panic: Sentry detected stuck tasks (21) -1 C 2 770d 772d 26/26 fixed on 2023/11/21 23:47
gvisor kvm: panic: Sentry detected stuck tasks (15) -1 C 186 864d 867d 26/26 fixed on 2023/08/19 00:49
gvisor kvm: panic: Sentry detected stuck tasks (28) -1 C 11 196d 201d 26/26 fixed on 2025/07/10 09:16
gvisor kvm: panic: Sentry detected stuck tasks (29) -1 C 3 42d 43d 26/26 fixed on 2025/11/19 02:01
gvisor kvm: panic: Sentry detected stuck tasks (5) -1 C 65 1411d 1473d 14/26 fixed on 2022/02/18 08:00
gvisor kvm: panic: Sentry detected stuck tasks (25) -1 C 3409 257d 353d 26/26 fixed on 2025/04/24 21:45
gvisor kvm: panic: Sentry detected stuck tasks (9) -1 2 1207d 1208d 14/26 fixed on 2022/09/20 07:30
gvisor kvm: panic: Sentry detected stuck tasks (3) -1 1 1525d 1525d 0/26 closed as invalid on 2021/10/27 19:47
gvisor kvm: panic: Sentry detected stuck tasks (12) -1 193 934d 1096d 26/26 fixed on 2023/06/10 02:45
gvisor kvm: panic: Sentry detected stuck tasks (14) -1 syz 4 879d 885d 26/26 fixed on 2023/08/08 01:03
gvisor kvm: panic: Sentry detected stuck tasks (17) -1 14 813d 844d 26/26 fixed on 2023/10/09 12:22

Sample crash report:
panic: Sentry detected 1 stuck task(s):
	Task tid: 168 (goroutine 735), entered RunSys state 3m18.29s 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 103 [running]:
panic({0xfe2ce0?, 0xc000b10c50?})
	GOROOT/src/runtime/panic.go:1017 +0x3ac fp=0xc00140dc68 sp=0xc00140dbb8 pc=0x43a72c
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).doAction(0xc00140dd90?, 0x125df1c?, 0x50?, 0xc00140dd90)
	pkg/sentry/watchdog/watchdog.go:379 +0x32a fp=0xc00140dd28 sp=0xc00140dc68 pc=0xb7548a
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).report(0xc000144200, 0xc000ce4090, 0x0?, {0xc000116f60?})
	pkg/sentry/watchdog/watchdog.go:338 +0x24b fp=0xc00140de58 sp=0xc00140dd28 pc=0xb7508b
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).runTurn(0xc000144200)
	pkg/sentry/watchdog/watchdog.go:320 +0x505 fp=0xc00140df58 sp=0xc00140de58 pc=0xb74d45
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).loop(0xc000144200)
	pkg/sentry/watchdog/watchdog.go:255 +0x25 fp=0xc00140dfc8 sp=0xc00140df58 pc=0xb747a5
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start.func2()
	pkg/sentry/watchdog/watchdog.go:206 +0x25 fp=0xc00140dfe0 sp=0xc00140dfc8 pc=0xb742c5
runtime.goexit()
	src/runtime/asm_amd64.s:1650 +0x1 fp=0xc00140dfe8 sp=0xc00140dfe0 pc=0x471241
created by gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start in goroutine 1
	pkg/sentry/watchdog/watchdog.go:206 +0x1cc

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/11/16 02:20 gvisor ceb1b69e35ec cb976f63 console log report syz C ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2023/11/16 02:14 gvisor ceb1b69e35ec 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.