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panic: Sentry detected stuck tasks (31)

Status: fixed on 2025/09/19 06:07
Fix commit: 6448dbe1b799 procfs: release the file system mutex on the error path
First crash: 91d, last: 49d
▶ ▼ 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 1246d 1318d 14/26 fixed on 2022/06/10 10:13
gvisor panic: Sentry detected stuck tasks (9) 2 9 1714d 1714d 14/26 fixed on 2021/02/26 03:02
gvisor panic: Sentry detected stuck tasks (14) 2 20 1435d 1480d 14/26 fixed on 2021/12/02 12:02
gvisor panic: Sentry detected stuck tasks (17) 2 C 822 901d 1167d 26/26 fixed on 2023/05/19 14:28
gvisor panic: Sentry detected stuck tasks (12) 2 2 1512d 1511d 14/26 fixed on 2021/09/17 01:50
gvisor panic: Sentry detected stuck tasks (20) 2 C 895 810d 813d 26/26 fixed on 2023/08/19 00:55
gvisor panic: Sentry detected stuck tasks 2 C 506 1859d 1879d 0/26 fixed on 2020/10/03 12:41
gvisor panic: Sentry detected stuck tasks (6) 2 syz 714 1748d 1800d 14/26 fixed on 2021/01/22 19:49
gvisor panic: Sentry detected stuck tasks (7) 2 syz 2567 1716d 1748d 14/26 fixed on 2021/02/23 13:36
gvisor panic: Sentry detected stuck tasks (4) 2 C 5 1814d 1814d 0/26 fixed on 2020/11/18 07:03
gvisor panic: Sentry detected stuck tasks (22) 2 5 761d 761d 26/26 fixed on 2023/10/07 05:04
gvisor panic: Sentry detected stuck tasks (8) 2 C 64 1714d 1716d 14/26 fixed on 2021/02/25 13:46
gvisor panic: Sentry detected stuck tasks (13) 2 1 1510d 1510d 14/26 fixed on 2021/09/27 21:02
gvisor panic: Sentry detected stuck tasks (10) 2 C 264 1661d 1713d 14/26 fixed on 2021/04/20 00:15
gvisor panic: Sentry detected stuck tasks (26) 2 C 17 330d 331d 26/26 fixed on 2024/12/11 10:55
gvisor panic: Sentry detected stuck tasks (11) 2 C 31 1527d 1654d 14/26 fixed on 2021/09/03 10:11
gvisor panic: Sentry detected stuck tasks (3) 2 C 180 1814d 1818d 0/26 fixed on 2020/11/17 10:52
gvisor panic: Sentry detected stuck tasks (28) 2 C 11282 195d 299d 26/26 fixed on 2025/04/24 21:44
gvisor panic: Sentry detected stuck tasks (21) 2 64 762d 810d 26/26 fixed on 2023/10/05 23:05
gvisor panic: Sentry detected stuck tasks (2) 2 C 951 1818d 1859d 0/26 fixed on 2020/11/13 09:22
gvisor panic: Sentry detected stuck tasks (5) 2 syz 83 1800d 1813d 0/26 fixed on 2020/12/01 11:18
gvisor panic: Sentry detected stuck tasks (27) 2 C 14 307d 327d 26/26 fixed on 2025/01/07 21:12
gvisor panic: Sentry detected stuck tasks (32) 2 3 28d 34d 20/26 internal: reported on 2025/10/02 17:05
gvisor panic: Sentry detected stuck tasks (15) 2 C 2582 1354d 1432d 14/26 fixed on 2022/02/25 14:00
gvisor panic: Sentry detected stuck tasks (25) 2 C 78 331d 360d 26/26 fixed on 2024/12/09 18:01
gvisor panic: Sentry detected stuck tasks (29) 2 C 51 190d 194d 26/26 fixed on 2025/04/30 13:05
gvisor panic: Sentry detected stuck tasks (24) 2 C 13 749d 755d 26/26 fixed on 2023/10/19 08:45
gvisor panic: Sentry detected stuck tasks (23) 2 C 23 755d 760d 26/26 fixed on 2023/10/12 20:28
gvisor panic: Sentry detected stuck tasks (18) 2 C 625 842d 901d 26/26 fixed on 2023/07/19 00:35

Sample crash report:
panic: Sentry detected 1 stuck task(s):
		Task tid: 27146 (goroutine 93438), entered RunSys state 3m37.66s 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 258 gp=0xc0001836c0 m=51 mp=0xc001ab3008 [running]:
panic({0x1c108e0?, 0xc0025c0e60?})
	GOROOT/src/runtime/panic.go:811 +0x168 fp=0xc001d6bba8 sp=0xc001d6baf8 pc=0x47d728
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).doAction(0xc000444080, 0x1, 0x1, 0xc001d6bd28)
	pkg/sentry/watchdog/watchdog.go:376 +0x499 fp=0xc001d6bcc0 sp=0xc001d6bba8 pc=0x129b9d9
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).report(0xc000444080, 0xc0048ac6f0, 0x1, {0x1?})
	pkg/sentry/watchdog/watchdog.go:335 +0x3b0 fp=0xc001d6be08 sp=0xc001d6bcc0 pc=0x129b450
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).runTurn(0xc000444080)
	pkg/sentry/watchdog/watchdog.go:317 +0x76d fp=0xc001d6bf30 sp=0xc001d6be08 pc=0x129aeed
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).loop(0xc000444080)
	pkg/sentry/watchdog/watchdog.go:254 +0x3b fp=0xc001d6bfc0 sp=0xc001d6bf30 pc=0x129a67b
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start.gowrap2()
	pkg/sentry/watchdog/watchdog.go:205 +0x34 fp=0xc001d6bfe0 sp=0xc001d6bfc0 pc=0x129a074
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc001d6bfe8 sp=0xc001d6bfe0 pc=0x486aa1
created by gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start in goroutine 1
	pkg/sentry/watchdog/watchdog.go:205 +0x39b

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/09/17 18:36 gvisor 2c49d9fd3897 e2beed91 .config console log report info ci-gvisor-ptrace-1-race panic: Sentry detected stuck tasks
2025/08/31 21:37 gvisor 376319f48048 807a3b61 .config console log report info ci-gvisor-systrap-1-cover panic: Sentry detected stuck tasks
2025/08/07 03:27 gvisor 7048e11fa6c3 9a42d6b1 .config console log report info ci-gvisor-systrap-1-cover panic: Sentry detected stuck tasks
* Struck through repros no longer work on HEAD.