panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x28 pc=0x5a6c84]
goroutine 1 [running]:
main.diffProgInfo(0x0, 0x634c8?)
/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:432 +0x24
main.(*FuzzerTool).diffMaxSignal(0x70?, 0x40014d0000?)
/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:442 +0xb8
main.(*FuzzerTool).convertExecutionResult(0x0?, {{0x14f1, {0x4001250000, 0x123c8, 0x123c8}, 0x0, 0x0, 0x0, 0x1, 0x0}, ...})
/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:386 +0x74
main.(*FuzzerTool).exchangeDataCall(0x40003d0000, 0x2, {0x40010a6180, 0x2, 0x691f00?})
/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:345 +0x314
main.(*FuzzerTool).exchangeDataWorker(0x40003d0000)
/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:380 +0x58
main.main()
/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:273 +0x1100
D0325 22:44:58.294273 313591 task_signals.go:470] [ 11778: 11778] Notified of signal 9
D0325 22:44:58.294280 313591 task_exit.go:204] [ 7: 1874] Transitioning from exit state TaskExitInitiated to TaskExitZombie
D0325 22:44:58.294284 313591 task_exit.go:204] [ 7: 1874] Transitioning from exit state TaskExitZombie to TaskExitDead
D0325 22:44:58.294294 313591 task_signals.go:204] [ 11778: 11778] Signal 9, PID: 11778, TID: 11778, fault addr: 0x0: terminating thread group
D0325 22:44:58.294299 313591 task_exit.go:204] [ 11778: 11778] Transitioning from exit state TaskExitNone to TaskExitInitiated
D0325 22:44:58.294358 313591 task_signals.go:470] [ 11781( 1): 11781( 1)] Notified of signal 9
D0325 22:44:58.294365 313591 task_exit.go:204] [ 11778: 11778] Transitioning from exit state TaskExitInitiated to TaskExitZombie
D0325 22:44:58.294370 313591 task_signals.go:458] [ 7: 7] Discarding duplicate signal 17
D0325 22:44:58.294600 313591 task_signals.go:204] [ 11781( 1): 11781( 1)] Signal 9, PID: 11781, TID: 11781, fault addr: 0x0: terminating thread group
D0325 22:44:58.294613 313591 task_exit.go:204] [ 11781( 1): 11781( 1)] Transitioning from exit state TaskExitNone to TaskExitInitiated
D0325 22:44:58.294663 313591 task_exit.go:361] [ 11781( 1): 11781( 1)] Init process terminating, killing namespace
D0325 22:44:58.294673 313591 task_signals.go:481] [ 11798( 6): 11798( 6)] No task notified of signal 9
D0325 22:44:58.294681 313591 task_signals.go:458] [ 11798( 6): 11798( 6)] Discarding duplicate signal 9
D0325 22:44:58.294687 313591 task_exit.go:204] [ 11781( 1): 11781( 1)] Transitioning from exit state TaskExitInitiated to TaskExitZombie
D0325 22:44:58.294693 313591 task_signals.go:470] [ 1: 1] Notified of signal 17
D0325 22:44:58.293691 313591 task_signals.go:204] [ 7: 11] Signal 9, PID: 7, TID: 11, fault addr: 0x0: terminating thread group
D0325 22:44:58.294860 313591 task_exit.go:204] [ 7: 11] Transitioning from exit state TaskExitNone to TaskExitInitiated
D0325 22:44:58.294893 313591 task_signals.go:458] [ 11778: 11778] Discarding duplicate signal 9
D0325 22:44:58.294900 313591 task_signals.go:458] [ 6676: 6676] Discarding duplicate signal 9
D0325 22:44:58.294905 313591 task_signals.go:458] [ 5077: 5077] Discarding duplicate signal 9
D0325 22:44:58.294910 313591 task_exit.go:204] [ 7: 11] Transitioning from exit state TaskExitInitiated to TaskExitZombie
D0325 22:44:58.294914 313591 task_exit.go:204] [ 7: 11] Transitioning from exit state TaskExitZombie to TaskExitDead
D0325 22:44:58.294929 313591 task_signals.go:204] [ 6676: 6676] Signal 9, PID: 6676, TID: 6676, fault addr: 0x0: terminating thread group
D0325 22:44:58.294935 313591 task_exit.go:204] [ 6676: 6676] Transitioning from exit state TaskExitNone to TaskExitInitiated
D0325 22:44:58.294950 313591 task_signals.go:204] [ 11798( 6): 11798( 6)] Signal 9, PID: 11798, TID: 11798, fault addr: 0x0: terminating thread group
D0325 22:44:58.294975 313591 task_exit.go:204] [ 11798( 6): 11798( 6)] Transitioning from exit state TaskExitNone to TaskExitInitiated
D0325 22:44:58.295129 313591 task_exit.go:361] [ 11798( 6): 11798( 6)] Init process terminating, killing namespace
D0325 22:44:58.295140 313591 task_signals.go:458] [ 11781( 1): 11781( 1)] Discarding duplicate signal 9
D0325 22:44:58.295147 313591 task_exit.go:204] [ 11798( 6): 11798( 6)] Transitioning from exit state TaskExitInitiated to TaskExitZombie
D0325 22:44:58.295152 313591 task_exit.go:204] [ 11798( 6): 11798( 6)] Transitioning from exit state TaskExitZombie to TaskExitDead
D0325 22:44:58.295169 313591 task_signals.go:179] [ 1: 1] Restarting syscall 98: interrupted by signal 17
D0325 22:44:58.295177 313591 task_signals.go:220] [ 1: 1] Signal 17: delivering to handler
D0325 22:44:58.295288 313591 task_signals.go:470] [ 6678( 1): 6678( 1)] Notified of signal 9
D0325 22:44:58.295302 313591 task_exit.go:204] [ 6676: 6676] Transitioning from exit state TaskExitInitiated to TaskExitZombie
D0325 22:44:58.295308 313591 task_signals.go:458] [ 7: 7] Discarding duplicate signal 17
D0325 22:44:58.298382 313591 task_signals.go:204] [ 7: 15] Signal 9, PID: 7, TID: 15, fault addr: 0x0: terminating thread group
D0325 22:44:58.298418 313591 task_exit.go:204] [ 7: 15] Transitioning from exit state TaskExitNone to TaskExitInitiated
D0325 22:44:58.298446 313591 task_signals.go:458] [ 11778: 11778] Discarding duplicate signal 9
D0325 22:44:58.298455 313591 task_signals.go:458] [ 6676: 6676] Discarding duplicate signal 9
D0325 22:44:58.298460 313591 task_signals.go:458] [ 5077: 5077] Discarding duplicate signal 9
D0325 22:44:58.298464 313591 task_exit.go:204] [ 7: 15] Transitioning from exit state TaskExitInitiated to TaskExitZombie
D0325 22:44:58.298469 313591 task_exit.go:204] [ 7: 15] Transitioning from exit state TaskExitZombie to TaskExitDead
D0325 22:44:58.298482 313591 task_signals.go:204] [ 7: 16] Signal 9, PID: 7, TID: 16, fault addr: 0x0: terminating thread group
D0325 22:44:58.298488 313591 task_exit.go:204] [ 7: 16] Transitioning from exit state TaskExitNone to TaskExitInitiated
D0325 22:44:58.298497 313591 task_signals.go:458] [ 5077: 5077] Discarding duplicate signal 9
D0325 22:44:58.298504 313591 task_signals.go:470] [ 9678: 9678] Notified of signal 9
D0325 22:44:58.298510 313591 task_signals.go:458] [ 11778: 11778] Discarding duplicate signal 9
D0325 22:44:58.298516 313591 task_signals.go:458] [ 6676: 6676] Discarding duplicate signal 9
D0325 22:44:58.298520 313591 task_exit.go:204] [ 7: 16] Transitioning from exit state TaskExitInitiated to TaskExitZombie
D0325 22:44:58.298523 313591 task_exit.go:204] [ 7: 16] Transitioning from exit state TaskExitZombie to TaskExitDead
D0325 22:44:58.298533 313591 task_signals.go:204] [ 7: 26] Signal 9, PID: 7, TID: 26, fault addr: 0x0: terminating thread group
D0325 22:44:58.298539 313591 task_exit.go:204] [ 7: 26] Transitioning from exit state TaskExitNone to TaskExitInitiated
D0325 22:44:58.298573 313591 task_signals.go:204] [ 9678: 9678] Signal 9, PID: 9678, TID: 9678, fault addr: 0x0: terminating thread group
D0325 22:44:58.298601 313591 task_exit.go:204] [ 9678: 9678] Transitioning from exit state TaskExitNone to TaskExitInitiated
D0325 22:44:58.298711 313591 task_signals.go:470] [ 9679( 1): 9679( 1)] Notified of signal 9
D0325 22:44:58.298720 313591 task_exit.go:204] [ 9678: 9678] Transitioning from exit state TaskExitInitiated to TaskExitZombie
D0325 22:44:58.298735 313591 task_signals.go:458] [ 7: 7] Discarding duplicate signal 17
D0325 22:44:58.299880 313591 task_signals.go:458] [ 11778: 11778] Discarding duplicate signal 9
D0325 22:44:58.299902 313591 task_signals.go:470] [ 1: 1] Notified of signal 17
D0325 22:44:58.299910 313591 task_signals.go:458] [ 6676: 6676] Discarding duplicate signal 9
D0325 22:44:58.299915 313591 task_signals.go:458] [ 1: 1] Discarding duplicate signal 17
D0325 22:44:58.299920 313591 task_signals.go:458] [ 5077: 5077] Discarding duplicate signal 9
D0325 22:44:58.299924 313591 task_signals.go:458] [ 1: 1] Discarding duplicate signal 17
D0325 22:44:58.299929 313591 task_signals.go:458] [ 9678: 9678] Discarding duplicate signal 9
D0325 22:44:58.299934 313591 task_signals.go:458] [ 1: 1] Discarding duplicate signal 17
D0325 22:44:58.299938 313591 task_exit.go:204] [ 7: 26] Transitioning from exit state TaskExitInitiated to TaskExitZombie
D0325 22:44:58.299943 313591 task_exit.go:204] [ 7: 26] Transitioning from exit state TaskExitZombie to TaskExitDead
D0325 22:44:58.299948 313591 task_exit.go:204] [ 7: 7] Transitioning from exit state TaskExitZombie to TaskExitDead
D0325 22:44:58.302076 313591 task_signals.go:179] [ 1: 1] Restarting syscall 98: interrupted by signal 17
D0325 22:44:58.302161 313591 task_signals.go:220] [ 1: 1] Signal 17: delivering to handler
D0325 22:44:58.302301 313591 task_signals.go:204] [ 5080( 1): 5080( 1)] Signal 9, PID: 5080, TID: 5080, fault addr: 0x0: terminating thread group
D0325 22:44:58.302371 313591 task_exit.go:204] [ 5080( 1): 5080( 1)] Transitioning from exit state TaskExitNone to TaskExitInitiated
D0325 22:44:58.302721 313653 urpc.go:611] urpc: unmarshal success.
I0325 22:44:58.302772 313653 main.go:226] Exiting with status: 512
D0325 22:44:58.302503 313591 task_signals.go:204] [ 9679( 1): 9679( 1)] Signal 9, PID: 9679, TID: 9679, fault addr: 0x0: terminating thread group
D0325 22:44:58.302545 313591 task_exit.go:204] [ 9679( 1): 9679( 1)] Transitioning from exit state TaskExitNone to TaskExitInitiated
D0325 22:44:58.302522 313591 loader.go:1259] updated processes (removal): map[{ci-gvisor-arm64-ptrace-1-0 0}:0x400028dc20]
D0325 22:44:58.302605 313591 controller.go:523] containerManager.Wait, cid: ci-gvisor-arm64-ptrace-1-0, pid: 7, waitStatus: 0x200, err: <nil>
D0325 22:44:58.302625 313591 task_exit.go:361] [ 9679( 1): 9679( 1)] Init process terminating, killing namespace
D0325 22:44:58.302634 313591 task_stop.go:138] [ 11760( 535): 11760( 535)] Leaving internal stop (*kernel.groupStop)(nil)
D0325 22:44:58.302646 313591 task_stop.go:138] [ 11760( 535): 11761( 536)] Leaving internal stop (*kernel.groupStop)(nil)
D0325 22:44:58.302652 313591 task_signals.go:481] [ 11760( 535): 11760( 535)] No task notified of signal 9
D0325 22:44:58.302654 313591 urpc.go:568] urpc: successfully marshalled 38 bytes.
D0325 22:44:58.302660 313591 task_signals.go:458] [ 11760( 535): 11760( 535)] Discarding duplicate signal 9
D0325 22:44:58.302666 313591 task_exit.go:204] [ 9679( 1): 9679( 1)] Transitioning from exit state TaskExitInitiated to TaskExitZombie
D0325 22:44:58.302673 313591 task_signals.go:470] [ 1: 1] Notified of signal 17
D0325 22:44:58.302722 313591 task_exit.go:361] [ 5080( 1): 5080( 1)] Init process terminating, killing namespace
D0325 22:44:58.302735 313591 task_exit.go:204] [ 5080( 1): 5080( 1)] Transitioning from exit state TaskExitInitiated to TaskExitZombie
D0325 22:44:58.302743 313591 task_signals.go:458] [ 1: 1] Discarding duplicate signal 17
D0325 22:44:58.303175 313591 task_signals.go:204] [ 11760( 535): 11760( 535)] Signal 9, PID: 11760, TID: 11760, fault addr: 0x0: terminating thread group
D0325 22:44:58.303188 313591 task_exit.go:204] [ 11760( 535): 11760( 535)] Transitioning from exit state TaskExitNone to TaskExitInitiated
D0325 22:44:58.303224 313591 task_exit.go:204] [ 11760( 535): 11760( 535)] Transitioning from exit state TaskExitInitiated to TaskExitZombie
D0325 22:44:58.303236 313591 task_signals.go:204] [ 11760( 535): 11761( 536)] Signal 9, PID: 11760, TID: 11761, fault addr: 0x0: terminating thread group
D0325 22:44:58.303242 313591 task_exit.go:204] [ 11760( 535): 11761( 536)] Transitioning from exit state TaskExitNone to TaskExitInitiated
D0325 22:44:58.303273 313591 task_signals.go:179] [ 1: 1] Restarting syscall 98: interrupted by signal 17
D0325 22:44:58.303289 313591 task_signals.go:220] [ 1: 1] Signal 17: delivering to handler
D0325 22:44:58.302582 313591 task_signals.go:204] [ 6678( 1): 6678( 1)] Signal 9, PID: 6678, TID: 6678, fault addr: 0x0: terminating thread group
D0325 22:44:58.303379 313591 task_exit.go:204] [ 6678( 1): 6678( 1)] Transitioning from exit state TaskExitNone to TaskExitInitiated
D0325 22:44:58.303426 313591 task_exit.go:361] [ 11760( 535): 11761( 536)] Init process terminating, killing namespace
D0325 22:44:58.303437 313591 task_signals.go:458] [ 9679( 1): 9679( 1)] Discarding duplicate signal 9
D0325 22:44:58.303443 313591 task_exit.go:204] [ 11760( 535): 11761( 536)] Transitioning from exit state TaskExitInitiated to TaskExitZombie
D0325 22:44:58.303449 313591 task_exit.go:204] [ 11760( 535): 11761( 536)] Transitioning from exit state TaskExitZombie to TaskExitDead
D0325 22:44:58.303453 313591 task_exit.go:204] [ 11760( 535): 11760( 535)] Transitioning from exit state TaskExitZombie to TaskExitDead
D0325 22:44:58.303874 313591 task_exit.go:361] [ 6678( 1): 6678( 1)] Init process terminating, killing namespace
D0325 22:44:58.303908 313591 task_exit.go:204] [ 6678( 1): 6678( 1)] Transitioning from exit state TaskExitInitiated to TaskExitZombie
D0325 22:44:58.303931 313591 task_signals.go:470] [ 1: 1] Notified of signal 17
D0325 22:44:58.303980 313591 task_signals.go:179] [ 1: 1] Restarting syscall 98: interrupted by signal 17
D0325 22:44:58.303990 313591 task_signals.go:220] [ 1: 1] Signal 17: delivering to handler
D0325 22:44:58.372088 313591 urpc.go:611] urpc: unmarshal success.
D0325 22:44:58.379472 313591 urpc.go:568] urpc: successfully marshalled 60265 bytes.
D0325 22:44:58.386231 313591 urpc.go:611] urpc: unmarshal success.
D0325 22:44:58.386283 313591 controller.go:232] containerManager.Processes, cid: ci-gvisor-arm64-ptrace-1-0
D0325 22:44:58.386514 313591 urpc.go:568] urpc: successfully marshalled 2313 bytes.
D0325 22:44:58.442689 313591 sampler.go:191] Time: Adjusting syscall overhead down to 7
D0325 22:44:59.439105 313591 sampler.go:191] Time: Adjusting syscall overhead down to 7
I0325 22:44:59.640451 313591 watchdog.go:295] Watchdog starting loop, tasks: 25, discount: 0s
D0325 22:45:00.439081 313591 sampler.go:191] Time: Adjusting syscall overhead down to 7
D0325 22:45:01.439092 313591 sampler.go:191] Time: Adjusting syscall overhead down to 7
D0325 22:45:02.439144 313591 sampler.go:191] Time: Adjusting syscall overhead down to 7