2023/07/31 02:36:54 SYZFATAL: executor 0 failed 11 times: failed to chmod temp dir: chmod /tmp/syzkaller-testdir672630883: no such file or directory D0731 02:36:54.109859 375518 task_signals.go:204] [ 6: 21359] Signal 6, PID: 21359, TID: 0, fault addr: 0x9: terminating thread group D0731 02:36:54.109872 375518 task_signals.go:204] [ 6: 553] Signal 6, PID: 553, TID: 0, fault addr: 0x9: terminating thread group D0731 02:36:54.109881 375518 task_exit.go:204] [ 6: 540] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.109886 375518 task_exit.go:204] [ 6: 540] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.109896 375518 task_exit.go:204] [ 6: 544] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.109902 375518 task_exit.go:204] [ 6: 544] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.109906 375518 task_exit.go:204] [ 6: 544] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.109913 375518 task_exit.go:204] [ 6: 549] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.109918 375518 task_exit.go:204] [ 6: 549] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.109922 375518 task_exit.go:204] [ 6: 549] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.109937 375518 task_exit.go:204] [ 6: 550] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.109943 375518 task_exit.go:204] [ 6: 550] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.109947 375518 task_exit.go:204] [ 6: 550] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.109961 375518 task_exit.go:204] [ 6: 542] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.109966 375518 task_exit.go:204] [ 6: 542] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.109970 375518 task_exit.go:204] [ 6: 542] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.109977 375518 task_exit.go:204] [ 6: 546] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.109983 375518 task_exit.go:204] [ 6: 546] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.109987 375518 task_exit.go:204] [ 6: 546] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.109994 375518 task_exit.go:204] [ 6: 547] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.110000 375518 task_exit.go:204] [ 6: 547] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.110004 375518 task_exit.go:204] [ 6: 547] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.110012 375518 task_exit.go:204] [ 6: 28] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.110023 375518 task_signals.go:470] [ 29: 29] Notified of signal 9 D0731 02:36:54.110031 375518 task_exit.go:204] [ 6: 28] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.110035 375518 task_exit.go:204] [ 6: 28] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.110042 375518 task_exit.go:204] [ 6: 548] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.110048 375518 task_exit.go:204] [ 6: 548] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.110052 375518 task_exit.go:204] [ 6: 548] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.110062 375518 task_signals.go:204] [ 29: 29] Signal 29, PID: 29, TID: 0, fault addr: 0x9: terminating thread group D0731 02:36:54.110069 375518 task_exit.go:204] [ 29: 29] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.110159 375518 task_signals.go:470] [ 33( 1): 33( 1)] Notified of signal 9 D0731 02:36:54.110168 375518 task_exit.go:204] [ 29: 29] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.110179 375518 task_signals.go:481] [ 6: 6] No task notified of signal 17 D0731 02:36:54.110190 375518 task_exit.go:204] [ 6: 454] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.110197 375518 task_exit.go:204] [ 6: 454] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.110201 375518 task_exit.go:204] [ 6: 454] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.113348 375518 task_signals.go:204] [ 33( 1): 33( 1)] Signal 33, PID: 33, TID: 0, fault addr: 0x9: terminating thread group D0731 02:36:54.113359 375518 task_exit.go:204] [ 6: 551] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.113428 375518 task_exit.go:204] [ 6: 551] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.113437 375518 task_exit.go:204] [ 6: 551] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.113452 375518 task_exit.go:204] [ 6: 456] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.113461 375518 task_exit.go:204] [ 6: 456] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.113469 375518 task_exit.go:204] [ 6: 456] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.113499 375518 task_exit.go:204] [ 6: 552] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.113507 375518 task_exit.go:204] [ 6: 552] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.113511 375518 task_exit.go:204] [ 6: 552] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.113519 375518 task_exit.go:204] [ 6: 459] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.113530 375518 task_exit.go:204] [ 6: 459] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.113535 375518 task_exit.go:204] [ 6: 459] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.113544 375518 task_exit.go:204] [ 6: 554] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.113551 375518 task_exit.go:204] [ 6: 554] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.113555 375518 task_exit.go:204] [ 6: 554] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.113563 375518 task_exit.go:204] [ 6: 2381] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.113570 375518 task_exit.go:204] [ 6: 2381] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.113574 375518 task_exit.go:204] [ 6: 2381] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.113583 375518 task_exit.go:204] [ 6: 555] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.113590 375518 task_exit.go:204] [ 6: 555] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.113594 375518 task_exit.go:204] [ 6: 555] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.113602 375518 task_exit.go:204] [ 6: 556] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.113612 375518 task_exit.go:204] [ 6: 556] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.113616 375518 task_exit.go:204] [ 6: 556] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.113628 375518 task_exit.go:204] [ 6: 18469] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.113637 375518 task_exit.go:204] [ 6: 18469] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.113641 375518 task_exit.go:204] [ 6: 18469] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.113649 375518 task_exit.go:204] [ 6: 557] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.113656 375518 task_exit.go:204] [ 6: 557] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.113659 375518 task_exit.go:204] [ 6: 557] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.113667 375518 task_exit.go:204] [ 6: 558] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.113674 375518 task_exit.go:204] [ 6: 558] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.113678 375518 task_exit.go:204] [ 6: 558] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.113685 375518 task_exit.go:204] [ 6: 18805] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.113692 375518 task_exit.go:204] [ 6: 18805] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.113698 375518 task_exit.go:204] [ 6: 18805] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.113710 375518 task_exit.go:204] [ 6: 559] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.113737 375518 task_exit.go:204] [ 6: 559] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.113751 375518 task_exit.go:204] [ 6: 559] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.113762 375518 task_exit.go:204] [ 688: 688] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.113855 375518 task_signals.go:470] [ 689( 1): 689( 1)] Notified of signal 9 D0731 02:36:54.113869 375518 task_exit.go:204] [ 688: 688] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.113887 375518 task_signals.go:458] [ 6: 6] Discarding duplicate signal 17 D0731 02:36:54.113898 375518 task_exit.go:204] [ 6: 21535] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.113908 375518 task_exit.go:204] [ 6: 21535] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.113912 375518 task_exit.go:204] [ 6: 21535] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.115627 375518 task_signals.go:204] [ 689( 1): 689( 1)] Signal 689, PID: 689, TID: 0, fault addr: 0x9: terminating thread group D0731 02:36:54.115664 375518 task_exit.go:204] [ 689( 1): 689( 1)] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.116842 375518 task_exit.go:358] [ 689( 1): 689( 1)] Init process terminating, killing namespace D0731 02:36:54.116871 375518 task_signals.go:481] [ 43498(28247): 43498(28247)] No task notified of signal 9 D0731 02:36:54.116881 375518 task_exit.go:204] [ 43498(28247): 43498(28247)] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.116892 375518 task_exit.go:204] [ 689( 1): 689( 1)] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.116900 375518 task_signals.go:470] [ 1: 1] Notified of signal 17 D0731 02:36:54.117267 375518 task_exit.go:204] [ 6: 7] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.117317 375518 task_signals.go:458] [ 688: 688] Discarding duplicate signal 9 D0731 02:36:54.117327 375518 task_signals.go:458] [ 29: 29] Discarding duplicate signal 9 D0731 02:36:54.117333 375518 task_exit.go:204] [ 6: 7] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.117338 375518 task_exit.go:204] [ 6: 7] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.117351 375518 task_exit.go:204] [ 6: 21902] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.117360 375518 task_exit.go:204] [ 6: 21902] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.117377 375518 task_exit.go:204] [ 6: 21902] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.117388 375518 task_exit.go:204] [ 6: 545] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.117395 375518 task_exit.go:204] [ 6: 545] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.117399 375518 task_exit.go:204] [ 6: 545] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.117407 375518 task_exit.go:204] [ 6: 27] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.117406 375518 task_signals.go:179] [ 1: 1] Restarting syscall 98: interrupted by signal 17 D0731 02:36:54.117417 375518 task_signals.go:470] [ 30: 30] Notified of signal 9 D0731 02:36:54.117422 375518 task_signals.go:220] [ 1: 1] Signal 17: delivering to handler D0731 02:36:54.117425 375518 task_signals.go:458] [ 688: 688] Discarding duplicate signal 9 D0731 02:36:54.117431 375518 task_signals.go:458] [ 29: 29] Discarding duplicate signal 9 D0731 02:36:54.117436 375518 task_exit.go:204] [ 6: 27] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.117440 375518 task_exit.go:204] [ 6: 27] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.117448 375518 task_exit.go:204] [ 6: 18549] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.117459 375518 task_exit.go:204] [ 6: 18549] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.117463 375518 task_exit.go:204] [ 6: 18549] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.117473 375518 task_exit.go:204] [ 6: 18599] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.117644 375518 task_signals.go:204] [ 30: 30] Signal 30, PID: 30, TID: 0, fault addr: 0x9: terminating thread group D0731 02:36:54.117694 375518 task_exit.go:204] [ 6: 18800] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.117739 375518 task_exit.go:204] [ 6: 541] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.117749 375518 task_exit.go:204] [ 6: 5421] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.117756 375518 task_exit.go:204] [ 6: 21359] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.117761 375518 task_exit.go:204] [ 6: 553] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.117767 375518 task_exit.go:204] [ 33( 1): 33( 1)] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.117773 375518 task_exit.go:204] [ 30: 30] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.117803 375518 task_exit.go:204] [ 6: 21359] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.117824 375518 task_exit.go:204] [ 6: 21359] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.117841 375518 task_exit.go:204] [ 6: 541] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.117846 375518 task_exit.go:204] [ 6: 541] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.117858 375518 task_exit.go:204] [ 6: 18800] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.117862 375518 task_exit.go:204] [ 6: 18800] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.117878 375518 task_signals.go:470] [ 35( 1): 35( 1)] Notified of signal 9 D0731 02:36:54.117892 375518 task_exit.go:204] [ 30: 30] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.117897 375518 task_signals.go:458] [ 6: 6] Discarding duplicate signal 17 D0731 02:36:54.117967 375518 task_exit.go:358] [ 33( 1): 33( 1)] Init process terminating, killing namespace D0731 02:36:54.117976 375518 task_stop.go:138] [ 4217(34246): 4217(34246)] Leaving internal stop (*kernel.groupStop)(nil) D0731 02:36:54.117986 375518 task_signals.go:481] [ 4217(34246): 4217(34246)] No task notified of signal 9 D0731 02:36:54.117994 375518 task_exit.go:204] [ 33( 1): 33( 1)] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.118000 375518 task_signals.go:470] [ 1: 1] Notified of signal 17 D0731 02:36:54.118015 375518 task_exit.go:204] [ 6: 553] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.118020 375518 task_exit.go:204] [ 6: 553] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.118043 375518 task_signals.go:204] [ 35( 1): 35( 1)] Signal 35, PID: 35, TID: 0, fault addr: 0x9: terminating thread group D0731 02:36:54.118053 375518 task_exit.go:204] [ 35( 1): 35( 1)] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.118077 375518 task_signals.go:204] [ 4217(34246): 4217(34246)] Signal 4217, PID: 4217, TID: 0, fault addr: 0x9: terminating thread group D0731 02:36:54.118090 375518 task_exit.go:204] [ 4217(34246): 4217(34246)] Transitioning from exit state TaskExitNone to TaskExitInitiated D0731 02:36:54.118662 375518 task_exit.go:204] [ 6: 18599] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.118677 375518 task_exit.go:204] [ 6: 18599] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.118697 375518 task_signals.go:179] [ 1: 1] Restarting syscall 98: interrupted by signal 17 D0731 02:36:54.118703 375518 task_signals.go:220] [ 1: 1] Signal 17: delivering to handler D0731 02:36:54.122178 375518 task_signals.go:458] [ 688: 688] Discarding duplicate signal 9 D0731 02:36:54.122224 375518 task_signals.go:470] [ 1: 1] Notified of signal 17 D0731 02:36:54.122235 375518 task_signals.go:458] [ 29: 29] Discarding duplicate signal 9 D0731 02:36:54.122246 375518 task_signals.go:458] [ 1: 1] Discarding duplicate signal 17 D0731 02:36:54.122252 375518 task_signals.go:458] [ 30: 30] Discarding duplicate signal 9 D0731 02:36:54.122258 375518 task_signals.go:458] [ 1: 1] Discarding duplicate signal 17 D0731 02:36:54.122264 375518 task_exit.go:204] [ 6: 5421] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.122271 375518 task_exit.go:204] [ 6: 5421] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.122277 375518 task_exit.go:204] [ 6: 6] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.122300 375518 task_signals.go:179] [ 1: 1] Restarting syscall 98: interrupted by signal 17 D0731 02:36:54.122307 375518 task_signals.go:220] [ 1: 1] Signal 17: delivering to handler D0731 02:36:54.122364 375518 loader.go:1169] updated processes (removal): map[{ci-gvisor-arm64-ptrace-1-0 0}:0x40004f4240] D0731 02:36:54.122393 375518 controller.go:560] containerManager.Wait, cid: ci-gvisor-arm64-ptrace-1-0, pid: 6, waitStatus: 0x100, err: D0731 02:36:54.122438 375518 urpc.go:568] urpc: successfully marshalled 38 bytes. D0731 02:36:54.124190 375518 task_exit.go:358] [ 35( 1): 35( 1)] Init process terminating, killing namespace D0731 02:36:54.124243 375518 task_exit.go:204] [ 35( 1): 35( 1)] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.124256 375518 task_signals.go:470] [ 1: 1] Notified of signal 17 D0731 02:36:54.124742 375518 task_signals.go:179] [ 1: 1] Restarting syscall 98: interrupted by signal 17 D0731 02:36:54.124780 375518 task_signals.go:220] [ 1: 1] Signal 17: delivering to handler D0731 02:36:54.125790 375518 task_exit.go:358] [ 4217(34246): 4217(34246)] Init process terminating, killing namespace D0731 02:36:54.125815 375518 task_signals.go:458] [ 33( 1): 33( 1)] Discarding duplicate signal 9 D0731 02:36:54.125825 375518 task_exit.go:204] [ 4217(34246): 4217(34246)] Transitioning from exit state TaskExitInitiated to TaskExitZombie D0731 02:36:54.125832 375518 task_exit.go:204] [ 4217(34246): 4217(34246)] Transitioning from exit state TaskExitZombie to TaskExitDead D0731 02:36:54.125320 375666 urpc.go:611] urpc: unmarshal success. I0731 02:36:54.125390 375666 main.go:265] Exiting with status: 256 D0731 02:36:54.224037 375518 urpc.go:611] urpc: unmarshal success. D0731 02:36:54.226955 375518 urpc.go:568] urpc: successfully marshalled 76280 bytes. D0731 02:36:54.230244 375518 urpc.go:611] urpc: unmarshal success. D0731 02:36:54.230286 375518 controller.go:226] containerManager.Processes, cid: ci-gvisor-arm64-ptrace-1-0 D0731 02:36:54.230426 375518 urpc.go:568] urpc: successfully marshalled 820 bytes. D0731 02:36:56.338363 375518 sampler.go:191] Time: Adjusting syscall overhead down to 7 D0731 02:36:57.338371 375518 sampler.go:191] Time: Adjusting syscall overhead down to 7 D0731 02:36:58.338411 375518 sampler.go:191] Time: Adjusting syscall overhead down to 7 D0731 02:37:03.338061 375518 sampler.go:191] Time: Adjusting syscall overhead down to 7