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fatal error: unexpected signal during runtime execution

Status: fixed on 2021/04/10 05:37
Reported-by: syzbot+ec55cea6e57ec083b7a6@syzkaller.appspotmail.com
Fix commit: eb9b8e53a3ef platform/kvm/x86: restore mxcsr when switching from guest to sentry
First crash: 2345d, last: 1394d
▶ ▼ Duplicate bugs (4)
duplicates (4):
Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
panic: runtime error: floating point error 6 1394d 2072d 0/26 closed as dup on 2019/08/14 18:47
fatal error: unexpected signal during runtime execution06:LINE executing program 1: 1 1469d 1468d 0/26 closed as dup on 2020/11/18 18:13
fatal error: D1121 15:LINE.ADDR NUM task_signals.go:LINE] [ NUM] Signal 23: delivering to handler 1 1466d 1458d 0/26 closed as dup on 2020/12/10 16:20
fatal error: D1123 23:LINE.ADDR 3621 task_signals.go:LINE] [ 33] Notified of signal 23 1 1463d 1456d 0/26 closed as dup on 2020/12/10 16:21
▶ ▼ Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
gvisor fatal error: unexpected signal during runtime execution (3) 9 606d 608d 26/26 fixed on 2023/03/31 20:51
gvisor fatal error: unexpected signal during runtime execution (2) 1 1188d 1181d 0/26 auto-closed as invalid on 2021/11/23 20:00
gvisor fatal error: unexpected signal during runtime execution (4) C 811 501d 495d 0/26 moderation: reported C repro on 2023/07/19 20:03

Sample crash report:
fatal error: unexpected signal during runtime execution
DIAGNOSIS:
I0318 20:10:41.150754   48209 x:0] ***************************
I0318 20:10:41.150825   48209 x:0] Args: [/syzkaller/managers/kvm-direct-sandbox/current/image -root /syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root -watchdog-action=panic -network=none -debug -platform=kvm -file-access=exclusive -network=sandbox debug -stacks ci-gvisor-kvm-direct-sandbox-0]
I0318 20:10:41.150839   48209 x:0] Git Revision: 6bece16b880e6afd3a1347205c45ae6f9272a5f5
I0318 20:10:41.150844   48209 x:0] PID: 48209
I0318 20:10:41.150857   48209 x:0] UID: 0, GID: 0
I0318 20:10:41.150860   48209 x:0] Configuration:
I0318 20:10:41.150864   48209 x:0] 		RootDir: /syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root
I0318 20:10:41.150867   48209 x:0] 		Platform: kvm
I0318 20:10:41.150873   48209 x:0] 		FileAccess: exclusive, overlay: false
I0318 20:10:41.150879   48209 x:0] 		Network: sandbox, logging: false
I0318 20:10:41.150885   48209 x:0] 		Strace: false, max size: 1024, syscalls: []
I0318 20:10:41.150896   48209 x:0] ***************************
D0318 20:10:41.150916   48209 x:0] Load container "/syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root" "ci-gvisor-kvm-direct-sandbox-0"
D0318 20:10:41.152573   48209 x:0] Signal container "ci-gvisor-kvm-direct-sandbox-0": signal 0
D0318 20:10:41.152601   48209 x:0] Signal sandbox "ci-gvisor-kvm-direct-sandbox-0"
D0318 20:10:41.152611   48209 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-sandbox-0"
D0318 20:10:41.152729   48209 x:0] urpc: successfully marshalled 110 bytes.
I0318 20:10:41.339862   48209 x:0] Found sandbox "ci-gvisor-kvm-direct-sandbox-0", PID: 47499
I0318 20:10:41.339883   48209 x:0] Retrieving sandbox stacks
D0318 20:10:41.339888   48209 x:0] Stacks sandbox "ci-gvisor-kvm-direct-sandbox-0"
D0318 20:10:41.339892   48209 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-sandbox-0"
D0318 20:10:41.339962   48209 x:0] urpc: successfully marshalled 36 bytes.
W0318 20:10:41.353930   48209 x:0] FATAL ERROR: retrieving stacks: getting sandbox "ci-gvisor-kvm-direct-sandbox-0" stacks: urpc method "debug.Stacks" failed: connection reset by peer
retrieving stacks: getting sandbox "ci-gvisor-kvm-direct-sandbox-0" stacks: urpc method "debug.Stacks" failed: connection reset by peer

Crashes (272):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/03/18 20:12 https://gvisor.googlesource.com/gvisor master 6bece16b880e 13026d10 .config console log report syz ci-gvisor-kvm-direct-sandbox
2019/03/18 19:49 https://gvisor.googlesource.com/gvisor master 6bece16b880e 13026d10 .config console log report syz ci-gvisor-kvm-proxy-overlay-sandbox
2019/02/20 17:49 https://gvisor.googlesource.com/gvisor master 3e3a1ef9d61f c95f0707 .config console log report syz ci-gvisor-kvm-direct-sandbox
2018/12/23 17:31 https://gvisor.googlesource.com/gvisor master 0df0df35fc4a e3bd7ab8 .config console log report syz ci-gvisor-kvm-proxy-overlay-sandbox
2021/02/01 09:54 gvisor d930def27a43 fc9fd31e .config console log report info ci-gvisor-kvm-cover fatal error: unexpected signal during runtime execution
2021/02/01 07:30 gvisor daeb06d2cbf5 fc9fd31e .config console log report info ci-gvisor-kvm-cover fatal error: unexpected signal during runtime execution
2021/02/01 06:29 gvisor daeb06d2cbf5 fc9fd31e .config console log report info ci-gvisor-kvm-cover fatal error: unexpected signal during runtime execution
2021/02/01 01:33 gvisor c5e3c1c7bd5b fc9fd31e .config console log report info ci-gvisor-kvm fatal error: unexpected signal during runtime execution
2021/01/31 23:49 gvisor 8dda226542d7 fc9fd31e .config console log report info ci-gvisor-kvm fatal error: unexpected signal during runtime execution
2021/01/31 21:26 gvisor daeb06d2cbf5 fc9fd31e .config console log report info ci-gvisor-kvm-cover fatal error: unexpected signal during runtime execution
2021/01/31 15:29 gvisor 8dda226542d7 fc9fd31e .config console log report info ci-gvisor-kvm-cover fatal error: unexpected signal during runtime execution
2021/01/31 14:06 gvisor 8dda226542d7 fc9fd31e .config console log report info ci-gvisor-kvm-cover fatal error: unexpected signal during runtime execution
2021/01/31 08:28 gvisor 8dda226542d7 fc9fd31e .config console log report info ci-gvisor-kvm-cover fatal error: unexpected signal during runtime execution
2021/01/30 17:49 gvisor 825c185dc562 fc9fd31e .config console log report info ci-gvisor-kvm-cover fatal error: unexpected signal during runtime execution
2021/01/30 14:13 gvisor 825c185dc562 fc9fd31e .config console log report info ci-gvisor-kvm fatal error: unexpected signal during runtime execution
2021/01/30 07:36 gvisor 25284ae3c9b5 fc9fd31e .config console log report info ci-gvisor-kvm-cover fatal error: unexpected signal during runtime execution
2021/01/29 17:40 gvisor ff4fc42784cf 6593fd32 .config console log report info ci-gvisor-kvm-cover fatal error: unexpected signal during runtime execution
2021/01/29 13:05 gvisor ff4fc42784cf 6593fd32 .config console log report info ci-gvisor-kvm-cover fatal error: unexpected signal during runtime execution
2021/01/28 17:55 gvisor 6012fe9b5965 7df34f59 .config console log report info ci-gvisor-kvm fatal error: unexpected signal during runtime execution
2021/01/28 03:38 gvisor 1d22284c13cc eefc07f2 .config console log report info ci-gvisor-kvm fatal error: unexpected signal during runtime execution
2021/01/27 13:22 gvisor 8e6604474101 a0ebf917 .config console log report info ci-gvisor-kvm-cover fatal error: unexpected signal during runtime execution
2021/01/19 22:27 gvisor f5736fa2bf91 63631df1 .config console log report info ci-gvisor-kvm-cover fatal error: unexpected signal during runtime execution
2021/01/18 04:41 gvisor cd75bb163f46 fd103621 .config console log report info ci-gvisor-kvm fatal error: unexpected signal during runtime execution
2021/01/18 01:01 gvisor cd75bb163f46 fd103621 .config console log report info ci-gvisor-kvm-cover fatal error: unexpected signal during runtime execution
2021/01/16 08:09 gvisor 833516c139b5 65a7a854 .config console log report info ci-gvisor-kvm
2021/01/15 08:25 gvisor 833516c139b5 65a7a854 .config console log report info ci-gvisor-kvm
2021/01/11 05:08 gvisor 7817e3b5e420 2c1f2513 .config console log report info ci-gvisor-kvm
2021/01/09 19:58 gvisor 7817e3b5e420 a6c52263 .config console log report info ci-gvisor-kvm
2021/01/09 11:14 gvisor 7817e3b5e420 a6c52263 .config console log report info ci-gvisor-kvm-cover
2021/01/09 05:46 gvisor 7817e3b5e420 c104d4a3 .config console log report info ci-gvisor-kvm
2021/01/08 18:34 gvisor 7817e3b5e420 c104d4a3 .config console log report info ci-gvisor-kvm
2021/01/08 06:42 gvisor 7817e3b5e420 c104d4a3 .config console log report info ci-gvisor-kvm
2021/01/06 14:15 gvisor a1e3845b65c2 fff20c29 .config console log report info ci-gvisor-kvm
2021/01/06 09:54 gvisor 3b1d37f6ab5c b1c228e1 .config console log report info ci-gvisor-kvm
2021/01/05 07:48 gvisor 3b1d37f6ab5c 2a28ff1f .config console log report info ci-gvisor-kvm
2021/01/04 19:42 gvisor 3b1d37f6ab5c 79264ae3 .config console log report info ci-gvisor-kvm
2021/01/03 21:24 gvisor 3b1d37f6ab5c 79264ae3 .config console log report info ci-gvisor-kvm
2021/01/01 14:01 gvisor 3b1d37f6ab5c 79264ae3 .config console log report info ci-gvisor-kvm
2021/01/01 12:12 gvisor ed5850e8eb98 79264ae3 .config console log report info ci-gvisor-kvm-cover
2020/12/24 15:32 gvisor 6d96a2394d3a c2c1d1dd .config console log report info ci-gvisor-kvm
2020/12/23 07:37 gvisor b645fcd241a8 04201c06 .config console log report info ci-gvisor-kvm
2020/12/18 09:15 gvisor b645fcd241a8 04201c06 .config console log report info ci-gvisor-kvm
2020/12/15 07:36 gvisor 2e191cb3f728 97183ed7 .config console log report info ci-gvisor-kvm
2020/12/06 15:42 gvisor df2dbe3e38aa f12ba0c5 .config console log report info ci-gvisor-kvm
2020/12/03 05:06 gvisor 24d6eb58e51b 8c9190ef .config console log report info ci-gvisor-kvm
2020/12/03 03:13 gvisor 24d6eb58e51b 8c9190ef .config console log report info ci-gvisor-kvm
2020/12/01 00:29 gvisor 3a60bc47a082 b3a34598 .config console log report info ci-gvisor-ptrace-proxy-sandbox-race
2020/11/30 05:58 gvisor 4fd71a7b20d5 a0092f9d .config console log report info ci-gvisor-main
2020/11/30 04:23 gvisor 4fd71a7b20d5 a0092f9d .config console log report info ci-gvisor-ptrace-proxy-sandbox-race
2020/11/30 04:16 gvisor 4fd71a7b20d5 a0092f9d .config console log report info ci-gvisor-main
2020/11/29 07:23 gvisor 4fd71a7b20d5 a0092f9d .config console log report info ci-gvisor-main
2020/11/28 16:54 gvisor 4fd71a7b20d5 76b4dcc7 .config console log report info ci-gvisor-ptrace-direct-overlay-host
2020/11/28 13:54 gvisor 4fd71a7b20d5 76b4dcc7 .config console log report info ci-gvisor-ptrace-direct-overlay-host-race
2020/11/27 10:22 gvisor ad83112423ec 5018c946 .config console log report info ci-gvisor-kvm-direct-sandbox
2020/11/04 01:05 gvisor 723464ec5522 cba33199 .config console log report info ci-gvisor-kvm-proxy-overlay-sandbox
2018/08/25 20:19 https://github.com/dvyukov/gvisor.git race d4d5ed1d9def 20749b59 .config console log report ci-gvisor-kvm-direct-overlay-host-race
2018/06/26 13:13 https://github.com/dvyukov/gvisor.git race 60dbbdc2d54b 089f1181 .config console log report ci-gvisor-ptrace-proxy-sandbox-race
* Struck through repros no longer work on HEAD.