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panic: Sentry detected 1 stuck task(s):

Status: fixed on 2020/06/11 00:39
Reported-by: syzbot+1c0363c17dcbb6e4dd13@syzkaller.appspotmail.com
Fix commit: 4950ccde75b3 Fix write hang bug found by syzkaller.
First crash: 1675d, last: 1581d
▶ ▼ Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
gvisor panic: Sentry detected 1 stuck task(s): (2) C 66 1491d 1567d 0/26 closed as dup on 2020/09/13 08:11

Sample crash report:
panic: Sentry detected 1 stuck task(s):
	Task tid: 15 (0xf), entered RunSys state 3m37.83s ago.
Search for '(*Task).run(0x..., 0x<tid>)' in the stack dump to find the offending goroutine
Stack for running G's are skipped while panicking.

goroutine 16 [running]:
panic(0xdf3ae0, 0xc00049e360)
	GOROOT/src/runtime/panic.go:1064 +0x46d fp=0xc0005afc08 sp=0xc0005afb50 pc=0x43432d
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).doAction(0xc00032e280, 0x1, 0x1, 0xc0005afd70)
	pkg/sentry/watchdog/watchdog.go:368 +0x57d fp=0xc0005afd00 sp=0xc0005afc08 pc=0xa01d6d
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).report(0xc00032e280, 0xc00030cea0, 0xeb01, 0xc712913c80)
	pkg/sentry/watchdog/watchdog.go:327 +0x311 fp=0xc0005afe38 sp=0xc0005afd00 pc=0xa01731
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).runTurn(0xc00032e280)
	pkg/sentry/watchdog/watchdog.go:308 +0x4b1 fp=0xc0005aff40 sp=0xc0005afe38 pc=0xa01341
gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).loop(0xc00032e280)
	pkg/sentry/watchdog/watchdog.go:243 +0x42 fp=0xc0005affd8 sp=0xc0005aff40 pc=0xa00db2
runtime.goexit()
	src/runtime/asm_amd64.s:1373 +0x1 fp=0xc0005affe0 sp=0xc0005affd8 pc=0x467d01
created by gvisor.dev/gvisor/pkg/sentry/watchdog.(*Watchdog).Start
	pkg/sentry/watchdog/watchdog.go:194 +0x1b7

Crashes (6204):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2020/06/07 13:55 gvisor 427d2082165e 2c2b926c .config console log report syz C ci-gvisor-main
2020/06/07 12:21 gvisor 427d2082165e 2c2b926c .config console log report syz C ci-gvisor-main
2020/06/07 06:59 gvisor 427d2082165e e6b89e4e .config console log report syz C ci-gvisor-ptrace-proxy-sandbox-race
2020/06/07 06:54 gvisor 427d2082165e e6b89e4e .config console log report syz C ci-gvisor-main
2020/06/07 05:07 gvisor 427d2082165e e6b89e4e .config console log report syz C ci-gvisor-ptrace-proxy-sandbox-race
2020/06/07 03:06 gvisor 427d2082165e e6b89e4e .config console log report syz C ci-gvisor-ptrace-proxy-sandbox-race
2020/06/07 01:56 gvisor 427d2082165e e6b89e4e .config console log report syz C ci-gvisor-main
2020/06/07 01:39 gvisor 427d2082165e e6b89e4e .config console log report syz C ci-gvisor-ptrace-proxy-sandbox-race
2020/06/06 23:52 gvisor 427d2082165e e6b89e4e .config console log report syz C ci-gvisor-main
2020/06/06 23:27 gvisor 427d2082165e e6b89e4e .config console log report syz C ci-gvisor-ptrace-proxy-sandbox-race
2020/06/06 22:06 gvisor 427d2082165e e6b89e4e .config console log report syz C ci-gvisor-ptrace-proxy-sandbox-race
2020/06/06 21:34 gvisor 427d2082165e e6b89e4e .config console log report syz C ci-gvisor-main
2020/06/06 18:12 gvisor 427d2082165e e6b89e4e .config console log report syz C ci-gvisor-ptrace-proxy-sandbox-race
2020/06/06 16:46 gvisor 427d2082165e e6b89e4e .config console log report syz C ci-gvisor-main
2020/06/06 01:26 gvisor d208bb86ac13 c3e9afb3 .config console log report syz C ci-gvisor-ptrace-proxy-sandbox-race
2020/06/05 22:57 gvisor d208bb86ac13 d36418e9 .config console log report syz C ci-gvisor-ptrace-proxy-sandbox-race
2020/06/05 22:23 gvisor d208bb86ac13 d36418e9 .config console log report syz C ci-gvisor-main
2020/06/05 21:18 gvisor d208bb86ac13 d36418e9 .config console log report syz C ci-gvisor-ptrace-proxy-sandbox-race
2020/06/05 18:24 gvisor d3a8bffe0459 d36418e9 .config console log report syz C ci-gvisor-main
2020/06/05 16:39 gvisor d3a8bffe0459 d36418e9 .config console log report syz C ci-gvisor-main
2020/06/05 16:34 gvisor d3a8bffe0459 d36418e9 .config console log report syz C ci-gvisor-ptrace-proxy-sandbox-race
2020/06/05 14:46 gvisor d3a8bffe0459 d36418e9 .config console log report syz C ci-gvisor-main
2020/06/05 06:00 gvisor d3a8bffe0459 2420d1bc .config console log report syz C ci-gvisor-ptrace-proxy-sandbox-race
2020/06/05 04:19 gvisor d3a8bffe0459 2420d1bc .config console log report syz C ci-gvisor-main
2020/06/04 21:15 gvisor d3a8bffe0459 6720fdef .config console log report syz C ci-gvisor-ptrace-proxy-sandbox-race
2020/06/04 19:30 gvisor d3a8bffe0459 6720fdef .config console log report syz C ci-gvisor-main
2020/06/04 14:31 gvisor d3a8bffe0459 6720fdef .config console log report syz C ci-gvisor-main
2020/06/04 10:29 gvisor d3a8bffe0459 a5ce5de0 .config console log report syz C ci-gvisor-main
2020/06/04 10:17 gvisor d3a8bffe0459 a5ce5de0 .config console log report syz C ci-gvisor-ptrace-proxy-sandbox-race
2020/06/04 08:47 gvisor d3a8bffe0459 a5ce5de0 .config console log report syz C ci-gvisor-main
2020/06/04 07:53 gvisor d3a8bffe0459 a5ce5de0 .config console log report syz C ci-gvisor-ptrace-proxy-sandbox-race
2020/06/04 06:05 gvisor d3a8bffe0459 a5ce5de0 .config console log report syz C ci-gvisor-main
2020/06/04 05:11 gvisor d3a8bffe0459 a5ce5de0 .config console log report syz C ci-gvisor-ptrace-proxy-sandbox-race
2020/05/20 23:17 gvisor f2f2dec7280e 1255f02a .config console log report syz C ci-gvisor-kvm-proxy-overlay-sandbox
2020/06/08 09:29 gvisor 626030417920 7751efd0 .config console log report ci-gvisor-main
2020/06/08 08:34 gvisor 626030417920 7751efd0 .config console log report ci-gvisor-main
2020/06/08 07:30 gvisor 626030417920 7751efd0 .config console log report ci-gvisor-ptrace-proxy-sandbox-race
2020/06/08 06:27 gvisor 626030417920 7751efd0 .config console log report ci-gvisor-ptrace-proxy-sandbox-race
2020/06/08 05:46 gvisor 626030417920 7751efd0 .config console log report ci-gvisor-main
2020/06/08 04:42 gvisor 626030417920 7751efd0 .config console log report ci-gvisor-main
2020/06/08 03:40 gvisor 626030417920 7751efd0 .config console log report ci-gvisor-ptrace-proxy-sandbox-race
2020/06/08 02:38 gvisor 626030417920 7751efd0 .config console log report ci-gvisor-main
2020/06/08 01:34 gvisor 626030417920 7751efd0 .config console log report ci-gvisor-main
2020/06/08 00:16 gvisor 626030417920 7751efd0 .config console log report ci-gvisor-ptrace-proxy-sandbox-race
2020/06/07 23:05 gvisor 626030417920 7751efd0 .config console log report ci-gvisor-main
2020/06/07 21:42 gvisor 626030417920 7751efd0 .config console log report ci-gvisor-main
2020/06/07 20:17 gvisor 626030417920 2c2b926c .config console log report ci-gvisor-main
2020/06/07 19:07 gvisor 626030417920 2c2b926c .config console log report ci-gvisor-ptrace-proxy-sandbox-race
2020/06/07 18:53 gvisor 626030417920 2c2b926c .config console log report ci-gvisor-ptrace-proxy-sandbox-race
2020/06/07 17:47 gvisor 626030417920 2c2b926c .config console log report ci-gvisor-main
2020/06/07 16:27 gvisor 427d2082165e 2c2b926c .config console log report ci-gvisor-ptrace-proxy-sandbox-race
2020/06/07 15:02 gvisor 427d2082165e 2c2b926c .config console log report ci-gvisor-ptrace-proxy-sandbox-race
2020/06/07 13:56 gvisor 427d2082165e 2c2b926c .config console log report ci-gvisor-ptrace-proxy-sandbox-race
2020/06/07 13:27 gvisor 427d2082165e 2c2b926c .config console log report ci-gvisor-ptrace-proxy-sandbox-race
2020/06/07 10:38 gvisor 427d2082165e 2c2b926c .config console log report ci-gvisor-main
2020/06/07 10:16 gvisor 427d2082165e 2c2b926c .config console log report ci-gvisor-main
2020/06/07 09:55 gvisor 427d2082165e 2c2b926c .config console log report ci-gvisor-main
2020/06/07 09:30 gvisor 427d2082165e 2c2b926c .config console log report ci-gvisor-main
2020/06/07 09:04 gvisor 427d2082165e 2c2b926c .config console log report ci-gvisor-main
2020/06/07 09:03 gvisor 427d2082165e 2c2b926c .config console log report ci-gvisor-main
2020/06/07 08:03 gvisor 9aaca5a6da39 e6b89e4e .config console log report ci-gvisor-kvm-proxy-overlay-sandbox
2020/06/07 08:02 gvisor 9aaca5a6da39 e6b89e4e .config console log report ci-gvisor-kvm-proxy-overlay-sandbox
2020/06/07 06:30 gvisor 427d2082165e e6b89e4e .config console log report ci-gvisor-kvm-direct-sandbox
2020/06/07 04:25 gvisor 9aaca5a6da39 e6b89e4e .config console log report ci-gvisor-kvm-proxy-overlay-sandbox
2020/06/07 04:17 gvisor 427d2082165e e6b89e4e .config console log report ci-gvisor-kvm-direct-sandbox
2020/06/07 00:56 gvisor 427d2082165e e6b89e4e .config console log report ci-gvisor-kvm-direct-sandbox
2020/06/06 18:19 gvisor 427d2082165e e6b89e4e .config console log report ci-gvisor-main
2020/06/06 17:54 gvisor 427d2082165e e6b89e4e .config console log report ci-gvisor-main
2020/06/06 16:54 gvisor 427d2082165e e6b89e4e .config console log report ci-gvisor-main
2020/06/06 16:45 gvisor 427d2082165e e6b89e4e .config console log report ci-gvisor-ptrace-proxy-sandbox-race
2020/06/06 15:38 gvisor 427d2082165e e6b89e4e .config console log report ci-gvisor-ptrace-proxy-sandbox-race
2020/06/06 14:21 gvisor 427d2082165e e6b89e4e .config console log report ci-gvisor-main
2020/06/06 14:03 gvisor 427d2082165e e6b89e4e .config console log report ci-gvisor-main
2020/06/06 12:49 gvisor 427d2082165e e6b89e4e .config console log report ci-gvisor-ptrace-proxy-sandbox-race
2020/06/06 12:31 gvisor 427d2082165e e6b89e4e .config console log report ci-gvisor-main
2020/06/06 12:09 gvisor 427d2082165e e6b89e4e .config console log report ci-gvisor-main
2020/06/06 11:46 gvisor 427d2082165e e6b89e4e .config console log report ci-gvisor-main
2020/06/06 11:20 gvisor 427d2082165e e6b89e4e .config console log report ci-gvisor-main
2020/05/24 03:45 gvisor ba2bf9fc13c2 96c92ad3 .config console log report ci-gvisor-ptrace-direct-overlay-host
2020/05/23 15:26 gvisor ba2bf9fc13c2 9682898d .config console log report ci-gvisor-ptrace-direct-overlay-host-race
2020/03/13 08:09 gvisor 919664600d8d d850e9d0 .config console log report ci-gvisor-kvm-direct-sandbox
2020/03/06 19:54 gvisor b1576e533223 4a4e0509 .config console log report ci-gvisor-ptrace-direct-overlay-host-race
* Struck through repros no longer work on HEAD.