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panic: Sentry detected stuck tasks (26)

Status: fixed on 2024/12/11 10:55
Fix commit: c88ffa321eb9 Returns ENOBUFS when writing to a veth device whose buffer is full.
First crash: 323d, last: 322d
▶ ▼ Similar bugs (29)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
gvisor panic: Sentry detected stuck tasks (16) 2 5 1238d 1311d 14/26 fixed on 2022/06/10 10:13
gvisor panic: Sentry detected stuck tasks (9) 2 9 1706d 1707d 14/26 fixed on 2021/02/26 03:02
gvisor panic: Sentry detected stuck tasks (14) 2 20 1427d 1473d 14/26 fixed on 2021/12/02 12:02
gvisor panic: Sentry detected stuck tasks (17) 2 C 822 894d 1159d 26/26 fixed on 2023/05/19 14:28
gvisor panic: Sentry detected stuck tasks (12) 2 2 1504d 1504d 14/26 fixed on 2021/09/17 01:50
gvisor panic: Sentry detected stuck tasks (20) 2 C 895 803d 805d 26/26 fixed on 2023/08/19 00:55
gvisor panic: Sentry detected stuck tasks 2 C 506 1852d 1872d 0/26 fixed on 2020/10/03 12:41
gvisor panic: Sentry detected stuck tasks (6) 2 syz 714 1741d 1792d 14/26 fixed on 2021/01/22 19:49
gvisor panic: Sentry detected stuck tasks (7) 2 syz 2567 1709d 1740d 14/26 fixed on 2021/02/23 13:36
gvisor panic: Sentry detected stuck tasks (4) 2 C 5 1806d 1807d 0/26 fixed on 2020/11/18 07:03
gvisor panic: Sentry detected stuck tasks (22) 2 5 753d 754d 26/26 fixed on 2023/10/07 05:04
gvisor panic: Sentry detected stuck tasks (8) 2 C 64 1707d 1708d 14/26 fixed on 2021/02/25 13:46
gvisor panic: Sentry detected stuck tasks (13) 2 1 1503d 1503d 14/26 fixed on 2021/09/27 21:02
gvisor panic: Sentry detected stuck tasks (10) 2 C 264 1653d 1706d 14/26 fixed on 2021/04/20 00:15
gvisor panic: Sentry detected stuck tasks (11) 2 C 31 1519d 1646d 14/26 fixed on 2021/09/03 10:11
gvisor panic: Sentry detected stuck tasks (3) 2 C 180 1807d 1811d 0/26 fixed on 2020/11/17 10:52
gvisor panic: Sentry detected stuck tasks (31) 2 3 41d 83d 26/26 fixed on 2025/09/19 06:07
gvisor panic: Sentry detected stuck tasks (28) 2 C 11282 187d 291d 26/26 fixed on 2025/04/24 21:44
gvisor panic: Sentry detected stuck tasks (21) 2 64 754d 802d 26/26 fixed on 2023/10/05 23:05
gvisor panic: Sentry detected stuck tasks (2) 2 C 951 1811d 1852d 0/26 fixed on 2020/11/13 09:22
gvisor panic: Sentry detected stuck tasks (5) 2 syz 83 1793d 1806d 0/26 fixed on 2020/12/01 11:18
gvisor panic: Sentry detected stuck tasks (27) 2 C 14 299d 319d 26/26 fixed on 2025/01/07 21:12
gvisor panic: Sentry detected stuck tasks (32) 2 3 21d 26d 13/26 internal: reported on 2025/10/02 17:05
gvisor panic: Sentry detected stuck tasks (15) 2 C 2582 1347d 1424d 14/26 fixed on 2022/02/25 14:00
gvisor panic: Sentry detected stuck tasks (25) 2 C 78 324d 352d 26/26 fixed on 2024/12/09 18:01
gvisor panic: Sentry detected stuck tasks (29) 2 C 51 182d 187d 26/26 fixed on 2025/04/30 13:05
gvisor panic: Sentry detected stuck tasks (24) 2 C 13 741d 747d 26/26 fixed on 2023/10/19 08:45
gvisor panic: Sentry detected stuck tasks (23) 2 C 23 748d 753d 26/26 fixed on 2023/10/12 20:28
gvisor panic: Sentry detected stuck tasks (18) 2 C 625 835d 894d 26/26 fixed on 2023/07/19 00:35

Sample crash report:
panic: Sentry detected 1 stuck task(s):
		Task tid: 11 (goroutine 434), entered RunSys state 3m13.83s 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 22 gp=0xc0005168c0 m=23 mp=0xc000677c08 [running]:
panic({0x1aeed20?, 0xc001004d40?})
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc000277ba8 sp=0xc000277af8 pc=0x478628
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).doAction(0xc000336000, 0x1, 0x1, 0xc000277d28)
	pkg/sentry/watchdog/watchdog.go:376 +0x4a8 fp=0xc000277cc0 sp=0xc000277ba8 pc=0x1246348
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).report(0xc000336000, 0xc000d8b320, 0x1, {0x1?})
	pkg/sentry/watchdog/watchdog.go:335 +0x3d3 fp=0xc000277e08 sp=0xc000277cc0 pc=0x1245db3
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).runTurn(0xc000336000)
	pkg/sentry/watchdog/watchdog.go:317 +0x78d fp=0xc000277f30 sp=0xc000277e08 pc=0x124582d
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).loop(0xc000336000)
	pkg/sentry/watchdog/watchdog.go:254 +0x3b fp=0xc000277fc0 sp=0xc000277f30 pc=0x1244f7b
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start.gowrap2()
	pkg/sentry/watchdog/watchdog.go:205 +0x34 fp=0xc000277fe0 sp=0xc000277fc0 pc=0x1244974
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000277fe8 sp=0xc000277fe0 pc=0x4819a1
created by gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start in goroutine 1
	pkg/sentry/watchdog/watchdog.go:205 +0x3a8

Crashes (17):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/12/10 23:31 gvisor 394d0852a80f cfc402b4 .config console log report syz / log C ci-gvisor-ptrace-1-race panic: Sentry detected stuck tasks
2024/12/10 23:07 gvisor 01e30ab09b71 cfc402b4 console log report syz / log C ci-gvisor-ptrace-2 panic: Sentry detected stuck tasks
2024/12/10 17:25 gvisor 95ca82d87278 cfc402b4 console log report syz / log C ci-gvisor-ptrace-1 panic: Sentry detected stuck tasks
2024/12/10 17:24 gvisor 95ca82d87278 cfc402b4 .config console log report syz / log C ci-gvisor-systrap-1-race panic: Sentry detected stuck tasks
2024/12/10 17:23 gvisor 95ca82d87278 cfc402b4 console log report syz / log C ci-gvisor-systrap-1 panic: Sentry detected stuck tasks
2024/12/10 17:23 gvisor 95ca82d87278 cfc402b4 .config console log report syz / log C ci-gvisor-ptrace-1-race-cover panic: Sentry detected stuck tasks
2024/12/10 17:21 gvisor 95ca82d87278 cfc402b4 .config console log report syz / log C ci-gvisor-ptrace-2-race-cover panic: Sentry detected stuck tasks
2024/12/10 17:21 gvisor 95ca82d87278 cfc402b4 .config console log report syz / log C ci-gvisor-systrap-1-race-cover panic: Sentry detected stuck tasks
2024/12/10 17:21 gvisor 95ca82d87278 cfc402b4 .config console log report syz / log C ci-gvisor-ptrace-2-race panic: Sentry detected stuck tasks
2024/12/10 17:20 gvisor 95ca82d87278 cfc402b4 .config console log report syz / log C ci-gvisor-systrap-1-cover panic: Sentry detected stuck tasks
2024/12/10 17:19 gvisor 95ca82d87278 cfc402b4 .config console log report syz / log C ci-gvisor-ptrace-1-cover panic: Sentry detected stuck tasks
2024/12/11 00:15 gvisor 394d0852a80f cfc402b4 console log report syz / log C ci-gvisor-arm64-systrap-1 panic: Sentry detected stuck tasks
2024/12/10 17:24 gvisor 95ca82d87278 cfc402b4 console log report syz / log C ci-gvisor-arm64-ptrace-1 panic: Sentry detected stuck tasks
2024/12/10 17:14 gvisor 95ca82d87278 cfc402b4 .config console log report syz / log C ci-gvisor-arm64-ptrace-1-cover panic: Sentry detected stuck tasks
2024/12/10 15:20 gvisor 95ca82d87278 cfc402b4 .config console log report syz / log C ci-gvisor-arm64-systrap-1-cover panic: Sentry detected stuck tasks
2024/12/10 16:59 gvisor 95ca82d87278 cfc402b4 .config console log report syz / log ci-gvisor-ptrace-2-cover panic: Sentry detected stuck tasks
2024/12/10 00:12 gvisor b41e6b89daaa deb72877 .config console log report info ci-gvisor-arm64-systrap-1-cover panic: Sentry detected stuck tasks
* Struck through repros no longer work on HEAD.