syzbot

 sign-in | mailing list | source | docs
🐞 Open [13]
🐞 Fixed [525]
🐞 Invalid [406]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
💬 Send us feedback

kvm: panic: Sentry detected stuck tasks (26)

Status: closed as invalid on 2025/04/25 22:43
First crash: 128d, last: 127d
▶ ▼ 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 (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 1636d 14/26 fixed on 2021/03/24 13:21
gvisor kvm: panic: Sentry detected stuck tasks (24) -1 C 9 263d 306d 26/26 fixed on 2024/12/11 10:55
gvisor kvm: panic: Sentry detected stuck tasks (6) -1 15 1279d 1289d 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 1359d 1387d 14/26 fixed on 2021/12/10 13:30
gvisor kvm: panic: Sentry detected stuck tasks (27) -1 C 5 125d 126d 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 (22) -1 C 8 635d 645d 26/26 fixed on 2023/12/12 09:56
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 75d 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 2 stuck task(s):
		Task tid: 45 (goroutine 322), entered RunSys state 3m19.79s ago.
		Task tid: 44 (goroutine 224), entered RunSys state 3m19.79s 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 99 gp=0xc000604e00 m=16 mp=0xc00037f108 [running]:
panic({0x116a7a0?, 0xc0000428c0?})
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc0005cbc80 sp=0xc0005cbbd0 pc=0x4741a8
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).doAction(0xc0005cbdf8?, 0x14284c5?, 0x42?, 0xc0005cbda0)
	pkg/sentry/watchdog/watchdog.go:376 +0x348 fp=0xc0005cbd48 sp=0xc0005cbc80 pc=0xc63068
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).report(0xc000148000, 0xc000efc450, 0x1, {0x2f?})
	pkg/sentry/watchdog/watchdog.go:335 +0x24f fp=0xc0005cbe78 sp=0xc0005cbd48 pc=0xc62c4f
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).runTurn(0xc000148000)
	pkg/sentry/watchdog/watchdog.go:317 +0x47c fp=0xc0005cbf58 sp=0xc0005cbe78 pc=0xc6291c
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).loop(0xc000148000)
	pkg/sentry/watchdog/watchdog.go:254 +0x25 fp=0xc0005cbfc8 sp=0xc0005cbf58 pc=0xc62405
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start.gowrap2()
	pkg/sentry/watchdog/watchdog.go:205 +0x25 fp=0xc0005cbfe0 sp=0xc0005cbfc8 pc=0xc61f65
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc0005cbfe8 sp=0xc0005cbfe0 pc=0x47d261
created by gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start in goroutine 1
	pkg/sentry/watchdog/watchdog.go:205 +0x1d8

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/04/25 20:47 gvisor 73c74424ac82 dea5c7e4 console log report syz / log C ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2025/04/25 18:55 gvisor 73c74424ac82 dea5c7e4 console log report syz / log C ci-gvisor-kvm kvm: panic: Sentry detected stuck tasks
2025/04/24 23:44 gvisor 73c74424ac82 e3715315 .config console log report info ci-gvisor-kvm-cover kvm: panic: Sentry detected stuck tasks
* Struck through repros no longer work on HEAD.