panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x10 pc=0x6e01c8] goroutine 1 [running]: github.com/google/syzkaller/prog.(*ChoiceTable).Enabled(...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/prio.go:239 main.(*Fuzzer).checkDisabledCalls(0xc0002811e0, 0xc00055c440) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:469 +0x68 main.(*Fuzzer).deserializeInput(0xc0002811e0, 0xc0001d0140, 0x4e, 0x4e, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:460 +0x14c main.(*Fuzzer).addCandidateInput(0xc0002811e0, 0xc0001d0140, 0x4e, 0x4e, 0x101) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:438 +0x4d main.(*Fuzzer).poll(0xc0002811e0, 0xc0006a5101, 0x0, 0xc0001b6be0) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:409 +0x4d4 main.main() /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:273 +0x1271 D0510 23:29:32.952427 578497 task_signals.go:216] [ 15] Signal 9: terminating thread group D0510 23:29:32.952932 578497 task_signals.go:216] [ 17] Signal 9: terminating thread group D0510 23:29:32.953345 578497 task_signals.go:216] [ 21] Signal 9: terminating thread group D0510 23:29:32.953510 578497 task_signals.go:216] [ 24] Signal 9: terminating thread group D0510 23:29:32.953596 578497 task_exit.go:252] [ 20] Transitioning from exit state TaskExitNone to TaskExitInitiated D0510 23:29:32.954337 578497 task_signals.go:216] [ 18] Signal 9: terminating thread group I0510 23:29:32.954497 578497 compat.go:135] Uncaught signal: "killed" (9), PID: 12, TID: 24, fault addr: 0x0 D0510 23:29:32.954599 578497 task_signals.go:216] [ 12] Signal 9: terminating thread group I0510 23:29:32.954774 578497 compat.go:135] Uncaught signal: "killed" (9), PID: 12, TID: 18, fault addr: 0x0 D0510 23:29:32.954878 578497 task_signals.go:216] [ 19] Signal 9: terminating thread group I0510 23:29:32.955023 578497 compat.go:135] Uncaught signal: "killed" (9), PID: 12, TID: 21, fault addr: 0x0 D0510 23:29:32.955153 578497 task_exit.go:252] [ 20] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0510 23:29:32.955132 578497 task_signals.go:216] [ 16] Signal 9: terminating thread group I0510 23:29:32.955222 578497 compat.go:135] Uncaught signal: "killed" (9), PID: 12, TID: 12, fault addr: 0x0 D0510 23:29:32.955309 578497 task_signals.go:216] [ 14] Signal 9: terminating thread group D0510 23:29:32.955396 578497 task_exit.go:252] [ 20] Transitioning from exit state TaskExitZombie to TaskExitDead D0510 23:29:32.955550 578497 task_signals.go:216] [ 13] Signal 9: terminating thread group I0510 23:29:32.955624 578497 compat.go:135] Uncaught signal: "killed" (9), PID: 12, TID: 17, fault addr: 0x0 D0510 23:29:32.955767 578497 task_signals.go:216] [ 22] Signal 9: terminating thread group I0510 23:29:32.955969 578497 compat.go:135] Uncaught signal: "killed" (9), PID: 12, TID: 15, fault addr: 0x0 I0510 23:29:32.956601 578497 compat.go:135] Uncaught signal: "killed" (9), PID: 12, TID: 13, fault addr: 0x0 D0510 23:29:32.956757 578497 task_exit.go:252] [ 24] Transitioning from exit state TaskExitNone to TaskExitInitiated I0510 23:29:32.957145 578497 compat.go:135] Uncaught signal: "killed" (9), PID: 12, TID: 14, fault addr: 0x0 D0510 23:29:32.957373 578497 task_exit.go:252] [ 18] Transitioning from exit state TaskExitNone to TaskExitInitiated I0510 23:29:32.957417 578497 compat.go:135] Uncaught signal: "killed" (9), PID: 12, TID: 16, fault addr: 0x0 I0510 23:29:32.957683 578497 compat.go:135] Uncaught signal: "killed" (9), PID: 12, TID: 19, fault addr: 0x0 D0510 23:29:32.957701 578497 task_exit.go:252] [ 17] Transitioning from exit state TaskExitNone to TaskExitInitiated I0510 23:29:32.957854 578497 compat.go:135] Uncaught signal: "killed" (9), PID: 12, TID: 22, fault addr: 0x0 D0510 23:29:32.957980 578497 task_exit.go:252] [ 21] Transitioning from exit state TaskExitNone to TaskExitInitiated D0510 23:29:32.958373 578497 task_exit.go:252] [ 12] Transitioning from exit state TaskExitNone to TaskExitInitiated D0510 23:29:32.958726 578497 task_exit.go:252] [ 15] Transitioning from exit state TaskExitNone to TaskExitInitiated D0510 23:29:32.958985 578497 task_exit.go:252] [ 13] Transitioning from exit state TaskExitNone to TaskExitInitiated D0510 23:29:32.959158 578497 task_exit.go:252] [ 14] Transitioning from exit state TaskExitNone to TaskExitInitiated D0510 23:29:32.959572 578497 task_exit.go:252] [ 16] Transitioning from exit state TaskExitNone to TaskExitInitiated D0510 23:29:32.960165 578497 task_exit.go:252] [ 19] Transitioning from exit state TaskExitNone to TaskExitInitiated D0510 23:29:32.961017 578497 task_exit.go:252] [ 22] Transitioning from exit state TaskExitNone to TaskExitInitiated D0510 23:29:32.963233 578497 task_exit.go:252] [ 15] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0510 23:29:32.963428 578497 task_exit.go:252] [ 15] Transitioning from exit state TaskExitZombie to TaskExitDead D0510 23:29:32.963753 578497 task_exit.go:252] [ 24] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0510 23:29:32.963884 578497 task_exit.go:252] [ 24] Transitioning from exit state TaskExitZombie to TaskExitDead D0510 23:29:32.964918 578497 task_exit.go:252] [ 12] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0510 23:29:32.965226 578497 task_exit.go:252] [ 17] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0510 23:29:32.965415 578497 task_exit.go:252] [ 17] Transitioning from exit state TaskExitZombie to TaskExitDead D0510 23:29:32.965962 578497 task_exit.go:252] [ 18] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0510 23:29:32.966257 578497 task_exit.go:252] [ 18] Transitioning from exit state TaskExitZombie to TaskExitDead D0510 23:29:32.966738 578497 task_exit.go:252] [ 21] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0510 23:29:32.966891 578497 task_exit.go:252] [ 21] Transitioning from exit state TaskExitZombie to TaskExitDead D0510 23:29:32.967515 578497 task_exit.go:252] [ 13] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0510 23:29:32.967761 578497 task_exit.go:252] [ 13] Transitioning from exit state TaskExitZombie to TaskExitDead D0510 23:29:32.968164 578497 task_exit.go:252] [ 14] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0510 23:29:32.968361 578497 task_exit.go:252] [ 14] Transitioning from exit state TaskExitZombie to TaskExitDead D0510 23:29:32.968864 578497 task_exit.go:252] [ 16] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0510 23:29:32.969032 578497 task_exit.go:252] [ 16] Transitioning from exit state TaskExitZombie to TaskExitDead D0510 23:29:32.969488 578497 task_exit.go:252] [ 19] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0510 23:29:32.969662 578497 task_exit.go:252] [ 19] Transitioning from exit state TaskExitZombie to TaskExitDead D0510 23:29:33.016250 578497 task_exit.go:252] [ 22] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0510 23:29:33.016446 578497 task_exit.go:252] [ 22] Transitioning from exit state TaskExitZombie to TaskExitDead D0510 23:29:33.016704 578497 task_exit.go:252] [ 12] Transitioning from exit state TaskExitZombie to TaskExitDead D0510 23:29:33.017326 578497 loader.go:1029] updated processes (removal): map[{ci-gvisor-ptrace-2-race-cover-0 0}:0xc00031ff20] D0510 23:29:33.017540 578497 controller.go:506] containerManager.Wait, cid: ci-gvisor-ptrace-2-race-cover-0, pid: 12, waitStatus: 0x200, err: D0510 23:29:33.017837 578497 urpc.go:641] urpc: successfully marshalled 38 bytes. D0510 23:29:33.018106 578999 urpc.go:695] urpc: unmarshal success. I0510 23:29:33.018256 578999 main.go:248] Exiting with status: 512 D0510 23:29:33.026441 578497 urpc.go:695] urpc: unmarshal success. D0510 23:29:33.026873 578497 controller.go:565] containerManager.Signal: cid: ci-gvisor-ptrace-2-race-cover-0, PID: 0, signal: 0, mode: Process D0510 23:29:33.027280 578497 urpc.go:641] urpc: successfully marshalled 37 bytes. D0510 23:29:33.028761 578497 urpc.go:695] urpc: unmarshal success. D0510 23:29:33.041494 578497 urpc.go:641] urpc: successfully marshalled 95112 bytes. D0510 23:29:33.060356 578497 urpc.go:695] urpc: unmarshal success. D0510 23:29:33.060714 578497 controller.go:200] containerManager.Processes, cid: ci-gvisor-ptrace-2-race-cover-0 D0510 23:29:33.061892 578497 urpc.go:641] urpc: successfully marshalled 160 bytes. D0510 23:29:35.337745 578497 sampler.go:190] Time: Adjusting syscall overhead up to 2000 D0510 23:29:35.338301 578497 sampler.go:190] Time: Adjusting syscall overhead up to 2000 D0510 23:29:39.337633 578497 sampler.go:229] Time: Adjusting syscall overhead down to 1750 D0510 23:29:39.337944 578497 sampler.go:229] Time: Adjusting syscall overhead down to 1750 D0510 23:29:40.337869 578497 sampler.go:229] Time: Adjusting syscall overhead down to 1532 D0510 23:29:40.338269 578497 sampler.go:229] Time: Adjusting syscall overhead down to 1532 D0510 23:29:41.337711 578497 sampler.go:229] Time: Adjusting syscall overhead down to 1341 D0510 23:29:45.337859 578497 sampler.go:229] Time: Adjusting syscall overhead down to 1341