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kvm: panic: Sentry detected stuck tasks (22)

Status: fixed on 2023/12/12 09:56
Fix commit: eaee2b213b2d Add check to pivot_root that ensures the new root is underneath the old root.
First crash: 645d, last: 635d
▶ ▼ Similar bugs (25)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
gvisor kvm: panic: Sentry detected stuck tasks (2) -1 C 66 1443d 1606d 14/26 fixed on 2021/09/25 08:25
gvisor kvm: panic: Sentry detected stuck tasks (26) -1 C 3 127d 128d 0/26 closed as invalid on 2025/04/25 22:43
gvisor kvm: panic: Sentry detected stuck tasks (7) -1 1 1197d 1190d 14/26 fixed on 2022/06/09 21:04
gvisor kvm: panic: Sentry detected stuck tasks (19) -1 3 656d 655d 26/26 fixed on 2023/11/15 20:33
gvisor kvm: panic: Sentry detected stuck tasks (23) -1 1 530d 530d 0/26 auto-obsoleted due to no activity on 2024/06/25 13:36
gvisor kvm: panic: Sentry detected stuck tasks -1 C 152 1621d 1637d 14/26 fixed on 2021/03/24 13:21
gvisor kvm: panic: Sentry detected stuck tasks (24) -1 C 9 263d 307d 26/26 fixed on 2024/12/11 10:55
gvisor kvm: panic: Sentry detected stuck tasks (6) -1 15 1279d 1290d 14/26 fixed on 2022/03/01 23:36
gvisor kvm: panic: Sentry detected stuck tasks (18) -1 C 3 668d 673d 26/26 fixed on 2023/11/03 12:12
gvisor kvm: panic: Sentry detected stuck tasks (4) -1 C 627 1360d 1387d 14/26 fixed on 2021/12/10 13:30
gvisor kvm: panic: Sentry detected stuck tasks (27) -1 C 5 125d 127d 26/26 fixed on 2025/05/02 08:36
gvisor kvm: panic: Sentry detected stuck tasks (10) -1 3 1020d 1038d 14/26 fixed on 2022/11/30 11:09
gvisor kvm: panic: Sentry detected stuck tasks (8) -1 1 1116d 1116d 0/26 closed as invalid on 2022/08/11 16:05
gvisor kvm: panic: Sentry detected stuck tasks (11) -1 1 1002d 1002d 0/26 closed as invalid on 2022/12/05 18:51
gvisor kvm: panic: Sentry detected stuck tasks (21) -1 C 2 650d 652d 26/26 fixed on 2023/11/21 23:47
gvisor kvm: panic: Sentry detected stuck tasks (15) -1 C 186 744d 747d 26/26 fixed on 2023/08/19 00:49
gvisor kvm: panic: Sentry detected stuck tasks (28) -1 C 11 76d 80d 26/26 fixed on 2025/07/10 09:16
gvisor kvm: panic: Sentry detected stuck tasks (20) -1 C 2 654d 654d 26/26 fixed on 2023/11/17 11:27
gvisor kvm: panic: Sentry detected stuck tasks (5) -1 C 65 1291d 1352d 14/26 fixed on 2022/02/18 08:00
gvisor kvm: panic: Sentry detected stuck tasks (25) -1 C 3409 136d 232d 26/26 fixed on 2025/04/24 21:45
gvisor kvm: panic: Sentry detected stuck tasks (9) -1 2 1086d 1088d 14/26 fixed on 2022/09/20 07:30
gvisor kvm: panic: Sentry detected stuck tasks (3) -1 1 1405d 1405d 0/26 closed as invalid on 2021/10/27 19:47
gvisor kvm: panic: Sentry detected stuck tasks (12) -1 193 813d 976d 26/26 fixed on 2023/06/10 02:45
gvisor kvm: panic: Sentry detected stuck tasks (14) -1 syz 4 759d 764d 26/26 fixed on 2023/08/08 01:03
gvisor kvm: panic: Sentry detected stuck tasks (17) -1 14 693d 723d 26/26 fixed on 2023/10/09 12:22

Sample crash report:
panic: Sentry detected 1 stuck task(s):
	Task tid: 546 (goroutine 2105), entered RunSys state 3m16.19s 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 146 [running]:
panic({0xffae80?, 0xc002058c50?})
	GOROOT/src/runtime/panic.go:1017 +0x3ac fp=0xc002129c68 sp=0xc002129bb8 pc=0x43a72c
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).doAction(0xc002129d90?, 0x1279e1f?, 0x50?, 0xc002129d90)
	pkg/sentry/watchdog/watchdog.go:379 +0x32a fp=0xc002129d28 sp=0xc002129c68 pc=0xb85f0a
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).report(0xc00018e200, 0xc000f5e510, 0x0?, {0xc0000d3230?})
	pkg/sentry/watchdog/watchdog.go:338 +0x24b fp=0xc002129e58 sp=0xc002129d28 pc=0xb85b0b
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).runTurn(0xc00018e200)
	pkg/sentry/watchdog/watchdog.go:320 +0x505 fp=0xc002129f58 sp=0xc002129e58 pc=0xb857c5
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).loop(0xc00018e200)
	pkg/sentry/watchdog/watchdog.go:255 +0x25 fp=0xc002129fc8 sp=0xc002129f58 pc=0xb85225
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start.func2()
	pkg/sentry/watchdog/watchdog.go:206 +0x25 fp=0xc002129fe0 sp=0xc002129fc8 pc=0xb84d45
runtime.goexit()
	src/runtime/asm_amd64.s:1650 +0x1 fp=0xc002129fe8 sp=0xc002129fe0 pc=0x471241
created by gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start in goroutine 1
	pkg/sentry/watchdog/watchdog.go:206 +0x1cc

Crashes (8):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/11/24 22:59 gvisor 722ddab51ebf 5b429f39 console log report syz C ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2023/11/24 22:55 gvisor 722ddab51ebf 5b429f39 .config console log report syz C ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2023/12/05 04:42 gvisor 73fe5bffafcd f819d6f7 .config console log report info ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2023/12/05 03:59 gvisor 73fe5bffafcd f819d6f7 .config console log report info ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2023/12/05 03:59 gvisor 73fe5bffafcd f819d6f7 .config console log report info ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2023/12/05 01:18 gvisor 73fe5bffafcd f819d6f7 console log report info ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2023/12/04 23:28 gvisor 73fe5bffafcd f819d6f7 .config console log report info ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
2023/11/27 14:06 gvisor 815dade355a3 7ec6c044 .config console log report info ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
* Struck through repros no longer work on HEAD.