SYZFAIL: too much cover (2)

Status: fixed on 2026/08/17 18:31
Reported-by: syzbot+c9b0980bc5de63fcd3b0@syzkaller.appspotmail.com
Fix commit: 31a791793542 Split Landlock syscall tests by ABI version.
First crash: 56d, last: 56d
Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
gvisor SYZFAIL: too much cover -1 2 199d 228d 0/26 auto-obsoleted due to no activity on 2026/06/17 01:22

Sample crash report:
SYZFAIL: too much cover
cov=0 (errno 110: Connection timed out)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
SYZFAIL: too much cover
cov=0 (errno 110: Connection timed out)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
SYZFAIL: too much cover
cov=0 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
SYZFAIL: too much cover
cov=0 (errno 110: Connection timed out)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
SYZFAIL: too many calls in output
slot=64 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
SYZFAIL: too many calls in output
slot=64 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
SYZFAIL: too many calls in output
slot=64 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
SYZFAIL: too many calls in output
slot=64 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
SYZFAIL: too many calls in output
slot=64 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
SYZFAIL: too many calls in output
slot=64 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
SYZFAIL: too many calls in output
slot=64 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
SYZFAIL: too many calls in output
slot=64 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
SYZFAIL: too many calls in output
slot=64 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
SYZFAIL: too many calls in output
slot=64 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
SYZFAIL: too many calls in output
slot=64 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
SYZFAIL: too many calls in output
slot=64 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
SYZFAIL: too many calls in output
slot=64 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
SYZFAIL: too many calls in output
slot=64 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
SYZFAIL: too many calls in output
slot=64 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
SYZFAIL: too many calls in output
slot=64 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
SYZFAIL: too many calls in output
slot=64 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
SYZFAIL: repeatedly failed to execute the program
proc=1 req=8380 state=3 status=67 (errno 9: Bad file descriptor)
D0704 11:27:32.485312       1 task_exit.go:225] [  10:  10] Transitioning from exit state TaskExitNone to TaskExitInitiated
D0704 11:27:32.485483       1 task_signals.go:464] [ 29089: 29089] Notified of signal 9
D0704 11:27:32.485503       1 task_signals.go:464] [ 29099: 29099] Notified of signal 9
D0704 11:27:32.485511       1 task_signals.go:464] [ 29436: 29436] Notified of signal 9
D0704 11:27:32.485516       1 task_exit.go:225] [  10:  10] Transitioning from exit state TaskExitInitiated to TaskExitZombie
D0704 11:27:32.485521       1 task_exit.go:225] [  10:  10] Transitioning from exit state TaskExitZombie to TaskExitDead
D0704 11:27:32.485933       1 task_signals.go:200] [ 29089: 29089] Signal 9, PID: 29089, TID: 29089, fault addr: 0x0: terminating thread group
D0704 11:27:32.485967       1 task_exit.go:225] [ 29089: 29089] Transitioning from exit state TaskExitNone to TaskExitInitiated
D0704 11:27:32.485966       1 task_signals.go:200] [ 29436: 29436] Signal 9, PID: 29436, TID: 29436, fault addr: 0x0: terminating thread group
D0704 11:27:32.485999       1 task_exit.go:225] [ 29436: 29436] Transitioning from exit state TaskExitNone to TaskExitInitiated
D0704 11:27:32.486029       1 loader.go:1681] updated processes (removal): map[{ci-gvisor-ptrace-2-1 0}:0x3da05845a1e0]
D0704 11:27:32.486105       1 controller.go:930] containerManager.Wait, cid: ci-gvisor-ptrace-2-1, pid: 10, waitStatus: 0x4300, err: <nil>
D0704 11:27:32.486156       1 urpc.go:592] urpc: successfully marshalled 40 bytes.
D0704 11:27:32.486174       1 urpc.go:372] urpc: RPC call for method containerManager.WaitPID succeeded.
D0704 11:27:32.486390   15642 urpc.go:635] urpc: unmarshal success.
I0704 11:27:32.486466   15642 cli.go:310] Exiting with status: 17152
D0704 11:27:32.488014       1 urpc.go:433] urpc: unregistering client with FD 25
D0704 11:27:32.488064       1 task_signals.go:437] [ 29101(   1): 29101(   1)] Discarding ignored signal 13
D0704 11:27:32.488216       1 task_signals.go:437] [ 29440(   1): 29440(   1)] Discarding ignored signal 13
D0704 11:27:32.492136       1 task_signals.go:437] [ 29101(   1): 29101(   1)] Discarding ignored signal 13
D0704 11:27:32.493851       1 task_signals.go:437] [ 29091(   1): 29091(   1)] Discarding ignored signal 13
D0704 11:27:32.494342       1 task_signals.go:200] [ 29099: 29099] Signal 9, PID: 29099, TID: 29099, fault addr: 0x0: terminating thread group
D0704 11:27:32.494433       1 task_signals.go:475] [ 29091(   1): 29091(   1)] No task notified of signal 9
D0704 11:27:32.494454       1 task_signals.go:437] [ 29440(   1): 29440(   1)] Discarding ignored signal 13
D0704 11:27:32.494464       1 task_exit.go:225] [ 29089: 29089] Transitioning from exit state TaskExitInitiated to TaskExitZombie
D0704 11:27:32.494485       1 task_signals.go:464] [   1:   1] Notified of signal 17
D0704 11:27:32.494514       1 task_signals.go:175] [   1:   1] Restarting syscall 202: interrupted by signal 17
D0704 11:27:32.494525       1 task_signals.go:216] [   1:   1] Signal 17: delivering to handler
D0704 11:27:32.494449       1 task_signals.go:437] [ 29101(   1): 29101(   1)] Discarding ignored signal 13
D0704 11:27:32.494797       1 task_exit.go:225] [ 29099: 29099] Transitioning from exit state TaskExitNone to TaskExitInitiated
D0704 11:27:32.495177       1 task_signals.go:437] [ 29091(   1): 29091(   1)] Discarding ignored signal 13
D0704 11:27:32.495240       1 task_signals.go:200] [ 29091(   1): 29091(   1)] Signal 9, PID: 29091, TID: 29091, fault addr: 0x0: terminating thread group
D0704 11:27:32.495268       1 task_signals.go:475] [ 29440(   1): 29440(   1)] No task notified of signal 9
D0704 11:27:32.495348       1 task_signals.go:437] [ 29440(   1): 29440(   1)] Discarding ignored signal 13
D0704 11:27:32.495378       1 task_exit.go:225] [ 29436: 29436] Transitioning from exit state TaskExitInitiated to TaskExitZombie
D0704 11:27:32.495397       1 task_signals.go:464] [   1:   1] Notified of signal 17
D0704 11:27:32.495418       1 task_signals.go:175] [   1:   1] Restarting syscall 202: interrupted by signal 17
D0704 11:27:32.495429       1 task_signals.go:216] [   1:   1] Signal 17: delivering to handler
D0704 11:27:32.495450       1 task_signals.go:200] [ 29440(   1): 29440(   1)] Signal 9, PID: 29440, TID: 29440, fault addr: 0x0: terminating thread group
D0704 11:27:32.495464       1 task_exit.go:225] [ 29091(   1): 29091(   1)] Transitioning from exit state TaskExitNone to TaskExitInitiated
D0704 11:27:32.495511       1 task_exit.go:225] [ 29101(   1): 29101(   1)] Transitioning from exit state TaskExitNone to TaskExitInitiated
D0704 11:27:32.495681       1 task_signals.go:475] [ 29101(   1): 29101(   1)] No task notified of signal 9
D0704 11:27:32.495709       1 task_exit.go:225] [ 29099: 29099] Transitioning from exit state TaskExitInitiated to TaskExitZombie
D0704 11:27:32.495720       1 task_signals.go:470] [   1:   2] Notified of group signal 17
D0704 11:27:32.495733       1 task_exit.go:225] [ 29440(   1): 29440(   1)] Transitioning from exit state TaskExitNone to TaskExitInitiated
D0704 11:27:32.495768       1 task_signals.go:172] [   1:   2] Not restarting syscall 202 after error interrupted by signal: interrupted by signal 17
D0704 11:27:32.495791       1 task_signals.go:216] [   1:   2] Signal 17: delivering to handler
D0704 11:27:32.495896       1 task_exit.go:388] [ 29091(   1): 29091(   1)] Init process terminating, killing namespace
D0704 11:27:32.495959       1 task_signals.go:475] [ 29435(  57): 29435(  57)] No task notified of signal 9
D0704 11:27:32.495975       1 task_exit.go:225] [ 29435(  57): 29435(  57)] Transitioning from exit state TaskExitZombie to TaskExitDead
D0704 11:27:32.496004       1 task_exit.go:225] [ 29091(   1): 29091(   1)] Transitioning from exit state TaskExitInitiated to TaskExitZombie
D0704 11:27:32.496020       1 task_signals.go:470] [   1:   3] Notified of group signal 17
D0704 11:27:32.496034       1 task_exit.go:388] [ 29101(   1): 29101(   1)] Init process terminating, killing namespace
D0704 11:27:32.496046       1 task_exit.go:225] [ 29101(   1): 29101(   1)] Transitioning from exit state TaskExitInitiated to TaskExitZombie
D0704 11:27:32.496053       1 task_signals.go:452] [   1:   1] Discarding duplicate signal 17
D0704 11:27:32.496068       1 task_signals.go:175] [   1:   3] Restarting syscall 202: interrupted by signal 17
D0704 11:27:32.496088       1 task_signals.go:216] [   1:   3] Signal 17: delivering to handler
D0704 11:27:32.496447       1 task_exit.go:388] [ 29440(   1): 29440(   1)] Init process terminating, killing namespace
D0704 11:27:32.496470       1 task_exit.go:225] [ 29440(   1): 29440(   1)] Transitioning from exit state TaskExitInitiated to TaskExitZombie
D0704 11:27:32.496480       1 task_signals.go:464] [   1:   1] Notified of signal 17
D0704 11:27:32.496604       1 task_signals.go:175] [   1:   1] Restarting syscall 202: interrupted by signal 17
D0704 11:27:32.496625       1 task_signals.go:216] [   1:   1] Signal 17: delivering to handler
D0704 11:27:32.639864       1 urpc.go:422] urpc: registering client with FD 25
D0704 11:27:32.640021       1 urpc.go:635] urpc: unmarshal success.
D0704 11:27:32.640042       1 urpc.go:302] urpc: handling RPC call for method debug.Stacks
D0704 11:27:32.640996       1 urpc.go:592] urpc: successfully marshalled 43470 bytes.
D0704 11:27:32.641021       1 urpc.go:372] urpc: RPC call for method debug.Stacks succeeded.
D0704 11:27:32.641755       1 urpc.go:433] urpc: unregistering client with FD 25
D0704 11:27:32.642119       1 urpc.go:422] urpc: registering client with FD 25
D0704 11:27:32.642238       1 urpc.go:635] urpc: unmarshal success.
D0704 11:27:32.642255       1 urpc.go:302] urpc: handling RPC call for method containerManager.Processes
D0704 11:27:32.642296       1 controller.go:316] containerManager.Processes, cid: ci-gvisor-ptrace-2-1
D0704 11:27:32.642440       1 urpc.go:592] urpc: successfully marshalled 1195 bytes.
D0704 11:27:32.642450       1 urpc.go:372] urpc: RPC call for method containerManager.Processes succeeded.
D0704 11:27:32.642643       1 urpc.go:433] urpc: unregistering client with FD 25

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/07/04 11:27 gvisor abf59273b7ba fcece630 console log report info ci-gvisor-ptrace-2 SYZFAIL: too much cover
* Struck through repros no longer work on HEAD.