syzbot

 sign-in | mailing list | source | docs
🐞 Open [11]
🐞 Fixed [556]
🐞 Invalid [414]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
💬 Send us feedback

panic: Sentry detected stuck tasks (33)

Status: fixed on 2025/11/19 02:01
Fix commit: 2d94e669ae96 Avoid netlink deadlock
First crash: 5d07h, last: 4d05h
▶ ▼ Similar bugs (30)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
gvisor panic: Sentry detected stuck tasks (16) 2 5 1262d 1335d 14/26 fixed on 2022/06/10 10:13
gvisor panic: Sentry detected stuck tasks (9) 2 9 1730d 1730d 14/26 fixed on 2021/02/26 03:02
gvisor panic: Sentry detected stuck tasks (14) 2 20 1451d 1497d 14/26 fixed on 2021/12/02 12:02
gvisor panic: Sentry detected stuck tasks (17) 2 C 822 917d 1183d 26/26 fixed on 2023/05/19 14:28
gvisor panic: Sentry detected stuck tasks (12) 2 2 1528d 1527d 14/26 fixed on 2021/09/17 01:50
gvisor panic: Sentry detected stuck tasks (20) 2 C 895 827d 829d 26/26 fixed on 2023/08/19 00:55
gvisor panic: Sentry detected stuck tasks 2 C 506 1875d 1896d 0/26 fixed on 2020/10/03 12:41
gvisor panic: Sentry detected stuck tasks (6) 2 syz 714 1764d 1816d 14/26 fixed on 2021/01/22 19:49
gvisor panic: Sentry detected stuck tasks (7) 2 syz 2567 1732d 1764d 14/26 fixed on 2021/02/23 13:36
gvisor panic: Sentry detected stuck tasks (4) 2 C 5 1830d 1830d 0/26 fixed on 2020/11/18 07:03
gvisor panic: Sentry detected stuck tasks (22) 2 5 777d 777d 26/26 fixed on 2023/10/07 05:04
gvisor panic: Sentry detected stuck tasks (8) 2 C 64 1730d 1732d 14/26 fixed on 2021/02/25 13:46
gvisor panic: Sentry detected stuck tasks (13) 2 1 1526d 1526d 14/26 fixed on 2021/09/27 21:02
gvisor panic: Sentry detected stuck tasks (10) 2 C 264 1677d 1730d 14/26 fixed on 2021/04/20 00:15
gvisor panic: Sentry detected stuck tasks (26) 2 C 17 346d 347d 26/26 fixed on 2024/12/11 10:55
gvisor panic: Sentry detected stuck tasks (11) 2 C 31 1543d 1670d 14/26 fixed on 2021/09/03 10:11
gvisor panic: Sentry detected stuck tasks (3) 2 C 180 1831d 1835d 0/26 fixed on 2020/11/17 10:52
gvisor panic: Sentry detected stuck tasks (31) 2 3 65d 107d 26/26 fixed on 2025/09/19 06:07
gvisor panic: Sentry detected stuck tasks (28) 2 C 11282 211d 315d 26/26 fixed on 2025/04/24 21:44
gvisor panic: Sentry detected stuck tasks (21) 2 64 778d 826d 26/26 fixed on 2023/10/05 23:05
gvisor panic: Sentry detected stuck tasks (2) 2 C 951 1835d 1875d 0/26 fixed on 2020/11/13 09:22
gvisor panic: Sentry detected stuck tasks (5) 2 syz 83 1817d 1829d 0/26 fixed on 2020/12/01 11:18
gvisor panic: Sentry detected stuck tasks (27) 2 C 14 323d 343d 26/26 fixed on 2025/01/07 21:12
gvisor panic: Sentry detected stuck tasks (32) 2 5 12d 50d 26/26 fixed on 2025/11/12 21:14
gvisor panic: Sentry detected stuck tasks (15) 2 C 2582 1371d 1448d 14/26 fixed on 2022/02/25 14:00
gvisor panic: Sentry detected stuck tasks (25) 2 C 78 347d 376d 26/26 fixed on 2024/12/09 18:01
gvisor panic: Sentry detected stuck tasks (29) 2 C 51 206d 211d 26/26 fixed on 2025/04/30 13:05
gvisor panic: Sentry detected stuck tasks (24) 2 C 13 765d 771d 26/26 fixed on 2023/10/19 08:45
gvisor panic: Sentry detected stuck tasks (23) 2 C 23 772d 777d 26/26 fixed on 2023/10/12 20:28
gvisor panic: Sentry detected stuck tasks (18) 2 C 625 858d 917d 26/26 fixed on 2023/07/19 00:35

Sample crash report:
panic: Sentry detected 1 stuck task(s):
		Task tid: 77 (goroutine 592), entered RunSys state 3m11.61s 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 151 gp=0xc00061aa80 m=14 mp=0xc00075c008 [running]:
panic({0x22eaf40?, 0xc001047820?})
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/21/execroot/_main/go/src/runtime/panic.go:802 +0x168 fp=0xc000c69b98 sp=0xc000c69ae8 pc=0x4bc308
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).doAction(0xc0001a4200, 0x1, 0x1, 0xc000c69d18)
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/21/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/watchdog/watchdog.go:371 +0x57f fp=0xc000c69cb0 sp=0xc000c69b98 pc=0x18c5fff
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).report(0xc0001a4200, 0xc0002adc80, 0x1, {0x1?})
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/21/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/watchdog/watchdog.go:330 +0x4e5 fp=0xc000c69df8 sp=0xc000c69cb0 pc=0x18c5925
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).runTurn(0xc0001a4200)
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/21/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/watchdog/watchdog.go:312 +0xa58 fp=0xc000c69f30 sp=0xc000c69df8 pc=0x18c51d8
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).loop(0xc0001a4200)
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/21/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/watchdog/watchdog.go:249 +0x9d fp=0xc000c69fc0 sp=0xc000c69f30 pc=0x18c463d
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start.gowrap2()
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/21/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/watchdog/watchdog.go:200 +0x34 fp=0xc000c69fe0 sp=0xc000c69fc0 pc=0x18c3ed4
runtime.goexit({})
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/21/execroot/_main/go/src/runtime/asm_amd64.s:1693 +0x1 fp=0xc000c69fe8 sp=0xc000c69fe0 pc=0x4c5b61
created by gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start in goroutine 1
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/21/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/watchdog/watchdog.go:200 +0x47d

Crashes (13):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/11/17 04:07 gvisor 9fc4303aefe1 f7988ea4 .config console log report syz / log C ci-gvisor-ptrace-1-race-cover panic: Sentry detected stuck tasks
2025/11/17 04:07 gvisor 9fc4303aefe1 f7988ea4 .config console log report syz / log C ci-gvisor-ptrace-2-race-cover panic: Sentry detected stuck tasks
2025/11/17 04:07 gvisor 9fc4303aefe1 f7988ea4 .config console log report syz / log C ci-gvisor-systrap-1-race-cover panic: Sentry detected stuck tasks
2025/11/17 03:58 gvisor 9fc4303aefe1 f7988ea4 .config console log report syz / log C ci-gvisor-ptrace-2-race panic: Sentry detected stuck tasks
2025/11/17 03:58 gvisor 9fc4303aefe1 f7988ea4 console log report syz / log C ci-gvisor-ptrace-1 panic: Sentry detected stuck tasks
2025/11/17 03:58 gvisor 9fc4303aefe1 f7988ea4 console log report syz / log C ci-gvisor-systrap-1 panic: Sentry detected stuck tasks
2025/11/17 03:58 gvisor 9fc4303aefe1 f7988ea4 console log report syz / log C ci-gvisor-ptrace-2 panic: Sentry detected stuck tasks
2025/11/17 03:57 gvisor 9fc4303aefe1 f7988ea4 .config console log report syz / log C ci-gvisor-systrap-1-race panic: Sentry detected stuck tasks
2025/11/17 03:57 gvisor 9fc4303aefe1 f7988ea4 .config console log report syz / log C ci-gvisor-ptrace-1-race panic: Sentry detected stuck tasks
2025/11/17 03:55 gvisor 9fc4303aefe1 f7988ea4 .config console log report syz / log C ci-gvisor-systrap-1-cover panic: Sentry detected stuck tasks
2025/11/17 03:54 gvisor 9fc4303aefe1 f7988ea4 .config console log report syz / log C ci-gvisor-ptrace-2-cover panic: Sentry detected stuck tasks
2025/11/17 03:54 gvisor 9fc4303aefe1 f7988ea4 .config console log report syz / log C ci-gvisor-ptrace-1-cover panic: Sentry detected stuck tasks
2025/11/18 06:29 gvisor e2c42ec307c0 ef766cd7 .config console log report info ci-gvisor-arm64-ptrace-1-cover panic: Sentry detected stuck tasks
* Struck through repros no longer work on HEAD.