panic: wd changed: "/tmp" -> "(unreachable)/" goroutine 121 [running]: github.com/google/syzkaller/pkg/osutil.Abs({0xc000195600, 0xcc05f8}) /syzkaller/gopath/src/github.com/google/syzkaller/pkg/osutil/osutil.go:331 +0x1b9 github.com/google/syzkaller/pkg/ipc.makeCommand(0x2, {0xc0003528a0, 0x2, 0x2}, 0xc000618720, 0xc00032bab0, 0xc00032bac8, {0x7fd95a600000, 0x1000000, 0x1000000}, ...) /syzkaller/gopath/src/github.com/google/syzkaller/pkg/ipc/ipc.go:558 +0x132 github.com/google/syzkaller/pkg/ipc.(*Env).Exec(0xc00069a120, 0xac1bc0, 0xc00058c200) /syzkaller/gopath/src/github.com/google/syzkaller/pkg/ipc/ipc.go:282 +0x20e main.(*Context).execute(0xc0002ca000, 0x2, 0x0, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/tools/syz-execprog/execprog.go:172 +0x151 main.(*Context).run(0xc0002ca000, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/tools/syz-execprog/execprog.go:157 +0xed main.main.func3() /syzkaller/gopath/src/github.com/google/syzkaller/tools/syz-execprog/execprog.go:120 +0x5c created by main.main /syzkaller/gopath/src/github.com/google/syzkaller/tools/syz-execprog/execprog.go:118 +0x61c D0131 06:15:16.115795 974694 task_exit.go:204] [ 14: 24] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.115879 974694 task_exit.go:204] [ 14: 24] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.115889 974694 task_exit.go:204] [ 14: 24] Transitioning from exit state TaskExitZombie to TaskExitDead D0131 06:15:16.115878 974694 task_signals.go:189] [ 14: 22] Signal 9: terminating thread group D0131 06:15:16.115979 974694 task_signals.go:189] [ 14: 23] Signal 9: terminating thread group D0131 06:15:16.116010 974694 task_signals.go:189] [ 14: 20] Signal 9: terminating thread group D0131 06:15:16.116033 974694 task_signals.go:189] [ 14: 28] Signal 9: terminating thread group D0131 06:15:16.116028 974694 task_signals.go:189] [ 14: 21] Signal 9: terminating thread group I0131 06:15:16.115979 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 14, TID: 22, fault addr: 0x0 D0131 06:15:16.116106 974694 task_signals.go:189] [ 14: 26] Signal 9: terminating thread group D0131 06:15:16.116105 974694 task_signals.go:189] [ 14: 25] Signal 9: terminating thread group D0131 06:15:16.116077 974694 task_signals.go:189] [ 14: 18] Signal 9: terminating thread group D0131 06:15:16.116003 974694 task_signals.go:189] [ 14: 19] Signal 9: terminating thread group I0131 06:15:16.116117 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 14, TID: 26, fault addr: 0x0 D0131 06:15:16.116118 974694 task_exit.go:204] [ 14: 22] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.116115 974694 task_signals.go:189] [ 14: 39] Signal 9: terminating thread group I0131 06:15:16.116135 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 14, TID: 20, fault addr: 0x0 I0131 06:15:16.116159 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 14, TID: 23, fault addr: 0x0 D0131 06:15:16.116187 974694 task_signals.go:189] [ 14: 14] Signal 9: terminating thread group I0131 06:15:16.116197 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 14, TID: 21, fault addr: 0x0 D0131 06:15:16.116210 974694 task_signals.go:189] [ 14: 38] Signal 9: terminating thread group D0131 06:15:16.116222 974694 task_signals.go:189] [ 14: 15] Signal 9: terminating thread group D0131 06:15:16.116239 974694 task_signals.go:189] [ 14: 16] Signal 9: terminating thread group D0131 06:15:16.116222 974694 task_exit.go:204] [ 14: 22] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.116403 974694 task_exit.go:204] [ 14: 22] Transitioning from exit state TaskExitZombie to TaskExitDead D0131 06:15:16.116255 974694 task_signals.go:189] [ 14: 17] Signal 9: terminating thread group D0131 06:15:16.116477 974694 task_exit.go:204] [ 14: 26] Transitioning from exit state TaskExitNone to TaskExitInitiated I0131 06:15:16.116342 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 14, TID: 28, fault addr: 0x0 D0131 06:15:16.116499 974694 task_exit.go:204] [ 14: 26] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.116514 974694 task_exit.go:204] [ 14: 26] Transitioning from exit state TaskExitZombie to TaskExitDead I0131 06:15:16.116517 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 14, TID: 25, fault addr: 0x0 I0131 06:15:16.116570 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 14, TID: 19, fault addr: 0x0 I0131 06:15:16.116653 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 14, TID: 18, fault addr: 0x0 I0131 06:15:16.116743 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 14, TID: 39, fault addr: 0x0 I0131 06:15:16.116776 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 14, TID: 17, fault addr: 0x0 I0131 06:15:16.116785 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 14, TID: 14, fault addr: 0x0 I0131 06:15:16.116795 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 14, TID: 38, fault addr: 0x0 I0131 06:15:16.116814 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 14, TID: 15, fault addr: 0x0 I0131 06:15:16.116823 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 14, TID: 16, fault addr: 0x0 D0131 06:15:16.116530 974694 task_exit.go:204] [ 14: 23] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.116850 974694 task_signals.go:470] [ 34: 34] Notified of signal 9 D0131 06:15:16.116867 974694 task_exit.go:204] [ 14: 23] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.116893 974694 task_exit.go:204] [ 14: 23] Transitioning from exit state TaskExitZombie to TaskExitDead D0131 06:15:16.116909 974694 task_exit.go:204] [ 14: 25] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.116918 974694 task_exit.go:204] [ 14: 25] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.116924 974694 task_exit.go:204] [ 14: 25] Transitioning from exit state TaskExitZombie to TaskExitDead D0131 06:15:16.116936 974694 task_exit.go:204] [ 14: 20] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.116950 974694 task_signals.go:470] [ 31: 31] Notified of signal 9 D0131 06:15:16.116958 974694 task_exit.go:204] [ 14: 20] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.116965 974694 task_exit.go:204] [ 14: 20] Transitioning from exit state TaskExitZombie to TaskExitDead D0131 06:15:16.116984 974694 task_signals.go:189] [ 34: 34] Signal 9: terminating thread group I0131 06:15:16.117051 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 34, TID: 34, fault addr: 0x0 D0131 06:15:16.117074 974694 task_exit.go:204] [ 34: 34] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.117182 974694 task_signals.go:470] [ 36: 36] Notified of signal 9 D0131 06:15:16.117266 974694 task_signals.go:189] [ 31: 31] Signal 9: terminating thread group D0131 06:15:16.119081 974694 task_signals.go:189] [ 82: 85] Signal 9: terminating thread group D0131 06:15:16.121106 974694 task_signals.go:189] [ 36: 36] Signal 9: terminating thread group D0131 06:15:16.121122 974694 task_exit.go:204] [ 34: 34] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.121221 974694 task_signals.go:481] [ 14: 14] No task notified of signal 17 I0131 06:15:16.121286 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 31, TID: 31, fault addr: 0x0 D0131 06:15:16.121308 974694 task_exit.go:204] [ 14: 19] Transitioning from exit state TaskExitNone to TaskExitInitiated I0131 06:15:16.121378 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 36, TID: 36, fault addr: 0x0 D0131 06:15:16.121415 974694 task_exit.go:204] [ 14: 28] Transitioning from exit state TaskExitNone to TaskExitInitiated I0131 06:15:16.121464 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 82, TID: 85, fault addr: 0x0 D0131 06:15:16.121491 974694 task_exit.go:204] [ 14: 18] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.121501 974694 task_exit.go:204] [ 14: 39] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.121509 974694 task_exit.go:204] [ 14: 17] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.121518 974694 task_exit.go:204] [ 14: 14] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.121525 974694 task_exit.go:204] [ 14: 38] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.121531 974694 task_exit.go:204] [ 14: 15] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.121537 974694 task_exit.go:204] [ 14: 16] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.121547 974694 task_exit.go:204] [ 14: 21] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.121571 974694 task_exit.go:204] [ 82: 82] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.121662 974694 task_exit.go:204] [ 82: 82] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.121832 974694 task_exit.go:204] [ 31: 31] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.121914 974694 task_exit.go:204] [ 36: 36] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.122032 974694 task_exit.go:204] [ 14: 19] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.122116 974694 task_exit.go:204] [ 14: 19] Transitioning from exit state TaskExitZombie to TaskExitDead D0131 06:15:16.122251 974694 task_exit.go:358] [ 36: 36] Init process terminating, killing namespace D0131 06:15:16.122288 974694 task_signals.go:476] [ 83: 87] Notified of group signal 9 D0131 06:15:16.122304 974694 task_signals.go:458] [ 83: 83] Discarding duplicate signal 9 D0131 06:15:16.122333 974694 task_exit.go:204] [ 36: 36] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.122352 974694 task_signals.go:470] [ 1: 1] Notified of signal 17 D0131 06:15:16.122381 974694 task_exit.go:204] [ 14: 28] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.122390 974694 task_exit.go:204] [ 14: 28] Transitioning from exit state TaskExitZombie to TaskExitDead D0131 06:15:16.122401 974694 task_exit.go:204] [ 82: 85] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.122401 974694 task_signals.go:179] [ 1: 1] Restarting syscall 202: interrupted by signal 17 D0131 06:15:16.122439 974694 task_signals.go:220] [ 1: 1] Signal 17: delivering to handler D0131 06:15:16.122477 974694 task_signals.go:470] [ 29: 29] Notified of signal 9 D0131 06:15:16.122566 974694 task_exit.go:204] [ 14: 18] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.122590 974694 task_exit.go:204] [ 14: 18] Transitioning from exit state TaskExitZombie to TaskExitDead D0131 06:15:16.122632 974694 task_signals.go:458] [ 34: 34] Discarding duplicate signal 9 D0131 06:15:16.122650 974694 task_signals.go:476] [ 1: 2] Notified of group signal 17 D0131 06:15:16.122660 974694 task_signals.go:458] [ 31: 31] Discarding duplicate signal 9 D0131 06:15:16.122680 974694 task_exit.go:204] [ 14: 14] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.122702 974694 task_exit.go:204] [ 14: 39] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.122719 974694 task_exit.go:204] [ 14: 39] Transitioning from exit state TaskExitZombie to TaskExitDead D0131 06:15:16.122717 974694 task_signals.go:189] [ 83: 83] Signal 9: terminating thread group D0131 06:15:16.122747 974694 task_exit.go:204] [ 82: 85] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.122850 974694 task_exit.go:204] [ 82: 85] Transitioning from exit state TaskExitZombie to TaskExitDead D0131 06:15:16.122916 974694 task_signals.go:443] [ 32: 32] Discarding ignored signal 17 D0131 06:15:16.122380 974694 task_signals.go:189] [ 83: 87] Signal 9: terminating thread group I0131 06:15:16.122962 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 83, TID: 83, fault addr: 0x0 D0131 06:15:16.122695 974694 task_signals.go:189] [ 29: 29] Signal 9: terminating thread group D0131 06:15:16.122723 974694 task_signals.go:176] [ 1: 2] Not restarting syscall 202 after errno &{516 %!d(string=interrupted by signal)}: interrupted by signal 17 I0131 06:15:16.122997 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 29, TID: 29, fault addr: 0x0 D0131 06:15:16.123013 974694 task_signals.go:220] [ 1: 2] Signal 17: delivering to handler I0131 06:15:16.123032 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 83, TID: 87, fault addr: 0x0 D0131 06:15:16.123059 974694 task_exit.go:204] [ 83: 83] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.123145 974694 task_exit.go:204] [ 83: 83] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.123167 974694 task_exit.go:204] [ 14: 17] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.123184 974694 task_exit.go:204] [ 14: 17] Transitioning from exit state TaskExitZombie to TaskExitDead D0131 06:15:16.123221 974694 task_exit.go:204] [ 29: 29] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.123344 974694 task_exit.go:204] [ 14: 15] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.123380 974694 task_exit.go:204] [ 14: 15] Transitioning from exit state TaskExitZombie to TaskExitDead D0131 06:15:16.123410 974694 task_exit.go:204] [ 83: 87] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.123541 974694 task_exit.go:204] [ 14: 21] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.123579 974694 task_exit.go:204] [ 14: 21] Transitioning from exit state TaskExitZombie to TaskExitDead D0131 06:15:16.123617 974694 task_exit.go:204] [ 14: 38] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.123641 974694 task_exit.go:204] [ 14: 38] Transitioning from exit state TaskExitZombie to TaskExitDead D0131 06:15:16.123675 974694 task_exit.go:358] [ 83: 87] Init process terminating, killing namespace D0131 06:15:16.123840 974694 task_signals.go:458] [ 36: 36] Discarding duplicate signal 9 D0131 06:15:16.123889 974694 task_exit.go:204] [ 83: 87] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.123899 974694 task_exit.go:204] [ 83: 87] Transitioning from exit state TaskExitZombie to TaskExitDead D0131 06:15:16.123907 974694 task_exit.go:204] [ 83: 83] Transitioning from exit state TaskExitZombie to TaskExitDead D0131 06:15:16.123943 974694 task_signals.go:481] [ 32: 32] No task notified of signal 9 D0131 06:15:16.123959 974694 task_exit.go:204] [ 29: 29] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.123968 974694 task_signals.go:470] [ 1: 1] Notified of signal 17 D0131 06:15:16.123992 974694 task_signals.go:179] [ 1: 1] Restarting syscall 202: interrupted by signal 17 D0131 06:15:16.124005 974694 task_signals.go:220] [ 1: 1] Signal 17: delivering to handler D0131 06:15:16.124051 974694 task_signals.go:481] [ 35: 35] No task notified of signal 9 D0131 06:15:16.124085 974694 task_exit.go:204] [ 31: 31] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.124094 974694 task_signals.go:476] [ 1: 3] Notified of group signal 17 D0131 06:15:16.124119 974694 task_signals.go:220] [ 1: 3] Signal 17: delivering to handler D0131 06:15:16.126474 974694 task_exit.go:204] [ 14: 16] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.126514 974694 task_exit.go:204] [ 14: 16] Transitioning from exit state TaskExitZombie to TaskExitDead D0131 06:15:16.126521 974694 task_exit.go:204] [ 14: 14] Transitioning from exit state TaskExitZombie to TaskExitDead D0131 06:15:16.126555 974694 loader.go:1069] updated processes (removal): map[{ci-gvisor-ptrace-3-1 0}:0xc0004d2990] D0131 06:15:16.126596 974694 controller.go:516] containerManager.Wait, cid: ci-gvisor-ptrace-3-1, pid: 14, waitStatus: 0x200, err: D0131 06:15:16.126647 974694 urpc.go:568] urpc: successfully marshalled 38 bytes. D0131 06:15:16.126795 976404 urpc.go:611] urpc: unmarshal success. I0131 06:15:16.126876 976404 main.go:269] Exiting with status: 512 D0131 06:15:16.128124 974694 task_signals.go:189] [ 35: 35] Signal 9: terminating thread group I0131 06:15:16.128162 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 35, TID: 35, fault addr: 0x0 D0131 06:15:16.128176 974694 task_exit.go:204] [ 35: 35] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.128265 974694 task_exit.go:358] [ 35: 35] Init process terminating, killing namespace D0131 06:15:16.128311 974694 task_signals.go:476] [ 84: 86] Notified of group signal 9 D0131 06:15:16.128337 974694 task_signals.go:458] [ 84: 84] Discarding duplicate signal 9 D0131 06:15:16.128352 974694 task_exit.go:204] [ 35: 35] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.128368 974694 task_signals.go:476] [ 1: 2] Notified of group signal 17 D0131 06:15:16.128384 974694 task_signals.go:189] [ 84: 86] Signal 9: terminating thread group I0131 06:15:16.128402 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 84, TID: 86, fault addr: 0x0 D0131 06:15:16.128412 974694 task_exit.go:204] [ 84: 86] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.128426 974694 task_exit.go:204] [ 82: 82] Transitioning from exit state TaskExitZombie to TaskExitDead D0131 06:15:16.128448 974694 task_signals.go:189] [ 84: 84] Signal 9: terminating thread group D0131 06:15:16.128479 974694 task_signals.go:189] [ 32: 32] Signal 9: terminating thread group D0131 06:15:16.128498 974694 task_exit.go:204] [ 84: 86] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.128514 974694 task_exit.go:204] [ 84: 86] Transitioning from exit state TaskExitZombie to TaskExitDead D0131 06:15:16.128429 974694 task_signals.go:176] [ 1: 2] Not restarting syscall 202 after errno &{516 %!d(string=interrupted by signal)}: interrupted by signal 17 I0131 06:15:16.128539 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 32, TID: 32, fault addr: 0x0 D0131 06:15:16.128559 974694 task_exit.go:204] [ 32: 32] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.128554 974694 task_signals.go:220] [ 1: 2] Signal 17: delivering to handler I0131 06:15:16.128625 974694 compat.go:135] Uncaught signal: "killed" (9), PID: 84, TID: 84, fault addr: 0x0 D0131 06:15:16.128660 974694 task_exit.go:204] [ 84: 84] Transitioning from exit state TaskExitNone to TaskExitInitiated D0131 06:15:16.128690 974694 task_exit.go:358] [ 32: 32] Init process terminating, killing namespace D0131 06:15:16.128716 974694 task_exit.go:204] [ 32: 32] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.128730 974694 task_signals.go:476] [ 1: 2] Notified of group signal 17 D0131 06:15:16.128768 974694 task_signals.go:176] [ 1: 2] Not restarting syscall 202 after errno &{516 %!d(string=interrupted by signal)}: interrupted by signal 17 D0131 06:15:16.128799 974694 task_signals.go:220] [ 1: 2] Signal 17: delivering to handler D0131 06:15:16.129100 974694 task_exit.go:358] [ 84: 84] Init process terminating, killing namespace D0131 06:15:16.129132 974694 task_signals.go:458] [ 35: 35] Discarding duplicate signal 9 D0131 06:15:16.129142 974694 task_exit.go:204] [ 84: 84] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0131 06:15:16.129149 974694 task_exit.go:204] [ 84: 84] Transitioning from exit state TaskExitZombie to TaskExitDead D0131 06:15:16.160787 974694 urpc.go:611] urpc: unmarshal success. D0131 06:15:16.161961 974694 urpc.go:568] urpc: successfully marshalled 39146 bytes. D0131 06:15:16.163285 974694 urpc.go:611] urpc: unmarshal success. D0131 06:15:16.163325 974694 controller.go:227] containerManager.Processes, cid: ci-gvisor-ptrace-3-1 D0131 06:15:16.163478 974694 urpc.go:568] urpc: successfully marshalled 940 bytes. D0131 06:15:21.987313 974694 sampler.go:191] Time: Adjusting syscall overhead down to 395