panic: Sentry detected stuck tasks (36)

Status: fixed on 2026/09/18 11:33
Fix commit: 15e33efbdaee Do not present memory.current on the true root cgroup2 node
First crash: 74d, last: 51d
▶ ▼ Similar bugs (34)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
gvisor panic: Sentry detected stuck tasks (16) 2 5 1612d 1685d 14/26 fixed on 2022/06/10 10:13
gvisor panic: Sentry detected stuck tasks (9) 2 9 2080d 2080d 14/26 fixed on 2021/02/26 03:02
gvisor panic: Sentry detected stuck tasks (14) 2 20 1801d 1847d 14/26 fixed on 2021/12/02 12:02
gvisor panic: Sentry detected stuck tasks (17) 2 syz, C 822 1268d 1533d 26/26 fixed on 2023/05/19 14:28
gvisor panic: Sentry detected stuck tasks (12) 2 2 1878d 1878d 14/26 fixed on 2021/09/17 01:50
gvisor panic: Sentry detected stuck tasks (20) 2 syz, C 895 1177d 1179d 26/26 fixed on 2023/08/19 00:55
gvisor panic: Sentry detected stuck tasks 2 syz, C 506 2226d 2246d 0/26 fixed on 2020/10/03 12:41
gvisor panic: Sentry detected stuck tasks (6) 2 syz 714 2114d 2166d 14/26 fixed on 2021/01/22 19:49
gvisor panic: Sentry detected stuck tasks (7) 2 syz 2567 2083d 2114d 14/26 fixed on 2021/02/23 13:36
gvisor panic: Sentry detected stuck tasks (4) 2 syz, C 5 2180d 2180d 0/26 fixed on 2020/11/18 07:03
gvisor panic: Sentry detected stuck tasks (22) 2 5 1127d 1127d 26/26 fixed on 2023/10/07 05:04
gvisor panic: Sentry detected stuck tasks (8) 2 syz, C 64 2081d 2082d 14/26 fixed on 2021/02/25 13:46
gvisor panic: Sentry detected stuck tasks (13) 2 1 1877d 1877d 14/26 fixed on 2021/09/27 21:02
gvisor panic: Sentry detected stuck tasks (10) 2 syz, C 264 2027d 2080d 14/26 fixed on 2021/04/20 00:15
gvisor panic: Sentry detected stuck tasks (26) 2 syz, C 17 696d 697d 26/26 fixed on 2024/12/11 10:55
gvisor panic: Sentry detected stuck tasks (11) 2 syz, C 31 1893d 2020d 14/26 fixed on 2021/09/03 10:11
gvisor panic: Sentry detected stuck tasks (35) 2 syz 41 207d 259d 26/26 fixed on 2026/04/14 23:49
gvisor panic: Sentry detected stuck tasks (3) 2 syz, C 180 2181d 2185d 0/26 fixed on 2020/11/17 10:52
gvisor panic: Sentry detected stuck tasks (31) 2 3 415d 457d 26/26 fixed on 2025/09/19 06:07
gvisor panic: Sentry detected stuck tasks (28) 2 syz, C 11282 561d 665d 26/26 fixed on 2025/04/24 21:44
gvisor panic: Sentry detected stuck tasks (21) 2 64 1128d 1176d 26/26 fixed on 2023/10/05 23:05
gvisor panic: Sentry detected stuck tasks (2) 2 syz, C 951 2185d 2225d 0/26 fixed on 2020/11/13 09:22
gvisor panic: Sentry detected stuck tasks (5) 2 syz 83 2167d 2180d 0/26 fixed on 2020/12/01 11:18
gvisor panic: Sentry detected stuck tasks (33) 2 syz, C 13 354d 355d 26/26 fixed on 2025/11/19 02:01
gvisor panic: Sentry detected stuck tasks (37) 2 11 9d05h 21d 0/26 moderation: reported on 2026/10/17 00:44
gvisor panic: Sentry detected stuck tasks (27) 2 syz, C 14 673d 693d 26/26 fixed on 2025/01/07 21:12
gvisor panic: Sentry detected stuck tasks (32) 2 5 362d 400d 26/26 fixed on 2025/11/12 21:14
gvisor panic: Sentry detected stuck tasks (15) 2 syz, C 2582 1721d 1798d 14/26 fixed on 2022/02/25 14:00
gvisor panic: Sentry detected stuck tasks (34) 2 2 297d 303d 26/26 fixed on 2026/01/14 10:50
gvisor panic: Sentry detected stuck tasks (25) 2 syz, C 78 697d 726d 26/26 fixed on 2024/12/09 18:01
gvisor panic: Sentry detected stuck tasks (29) 2 syz, C 51 556d 561d 26/26 fixed on 2025/04/30 13:05
gvisor panic: Sentry detected stuck tasks (24) 2 syz, C 13 1115d 1121d 26/26 fixed on 2023/10/19 08:45
gvisor panic: Sentry detected stuck tasks (23) 2 syz, C 23 1122d 1127d 26/26 fixed on 2023/10/12 20:28
gvisor panic: Sentry detected stuck tasks (18) 2 syz, C 625 1209d 1267d 26/26 fixed on 2023/07/19 00:35

Sample crash report:
panic: Sentry detected 1 stuck task(s):
		Task tid: 25637 (goroutine 119819), entered RunSys state 3m12.63s 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 259 gp=0x34b55b300b40 m=34 mp=0x34b55b135808 [running]:
panic({0x1a8e100?, 0x34b55e90ef30?})
	/syzkaller/.cache/bazel/_bazel_root/8c3527d6b90f1bcab77f0f2b1b1fec96/sandbox/linux-sandbox/87/execroot/_main/go/src/runtime/panic.go:879 +0x16f fp=0x34b55e079bf0 sp=0x34b55e079b40 pc=0x48d0cf
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).doAction(0x34b55c208c90?, 0x1dd919b?, 0x50?, 0x3b?, 0x34b55c208c90)
	/syzkaller/.cache/bazel/_bazel_root/8c3527d6b90f1bcab77f0f2b1b1fec96/sandbox/linux-sandbox/87/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/watchdog/watchdog.go:394 +0x3d4 fp=0x34b55e079c80 sp=0x34b55e079bf0 pc=0x12dd054
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).report(0x34b55abea100, 0x34b55c208c60, 0x1, {0x2f?})
	/syzkaller/.cache/bazel/_bazel_root/8c3527d6b90f1bcab77f0f2b1b1fec96/sandbox/linux-sandbox/87/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/watchdog/watchdog.go:359 +0x485 fp=0x34b55e079e58 sp=0x34b55e079c80 pc=0x12dcb85
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).runTurn(0x34b55abea100)
	/syzkaller/.cache/bazel/_bazel_root/8c3527d6b90f1bcab77f0f2b1b1fec96/sandbox/linux-sandbox/87/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/watchdog/watchdog.go:339 +0x733 fp=0x34b55e079f38 sp=0x34b55e079e58 pc=0x12dc573
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).loop(0x34b55abea100)
	/syzkaller/.cache/bazel/_bazel_root/8c3527d6b90f1bcab77f0f2b1b1fec96/sandbox/linux-sandbox/87/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/watchdog/watchdog.go:273 +0xc5 fp=0x34b55e079fc8 sp=0x34b55e079f38 pc=0x12dbca5
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start.gowrap2()
	/syzkaller/.cache/bazel/_bazel_root/8c3527d6b90f1bcab77f0f2b1b1fec96/sandbox/linux-sandbox/87/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/watchdog/watchdog.go:203 +0x17 fp=0x34b55e079fe0 sp=0x34b55e079fc8 pc=0x12db637
runtime.goexit({})
	/syzkaller/.cache/bazel/_bazel_root/8c3527d6b90f1bcab77f0f2b1b1fec96/sandbox/linux-sandbox/87/execroot/_main/go/src/runtime/asm_amd64.s:1771 +0x1 fp=0x34b55e079fe8 sp=0x34b55e079fe0 pc=0x495e61
created by gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start in goroutine 1
	/syzkaller/.cache/bazel/_bazel_root/8c3527d6b90f1bcab77f0f2b1b1fec96/sandbox/linux-sandbox/87/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/watchdog/watchdog.go:203 +0x2f6

Crashes (8):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/09/17 01:41 gvisor 901e954dacfd 95928915 .config console log report info ci-gvisor-systrap-1-cover panic: Sentry detected stuck tasks
2026/09/16 16:53 gvisor 88969d2e2fd3 b0e4c57e .config console log report info ci-gvisor-ptrace-1-cover panic: Sentry detected stuck tasks
2026/09/16 15:46 gvisor 88969d2e2fd3 b0e4c57e .config console log report info ci-gvisor-systrap-1-cover panic: Sentry detected stuck tasks
2026/09/16 04:39 gvisor 32d64686c131 12a0a44a .config console log report info ci-gvisor-systrap-1-cover panic: Sentry detected stuck tasks
2026/09/15 19:18 gvisor f2f951cb50be f41e228a .config console log report info ci-gvisor-ptrace-2-cover panic: Sentry detected stuck tasks
2026/09/15 16:45 gvisor f2f951cb50be f41e228a .config console log report info ci-gvisor-systrap-1-cover panic: Sentry detected stuck tasks
2026/08/25 00:09 gvisor 0b9499c9fb54 614e416a .config console log report info ci-gvisor-systrap-1-cover panic: Sentry detected stuck tasks
2026/08/24 22:35 gvisor 0b9499c9fb54 614e416a .config console log report info ci-gvisor-ptrace-3-cover panic: Sentry detected stuck tasks
* Struck through repros no longer work on HEAD.