W0116 18:09:01.469152 3803 x:0] FATAL ERROR: error waiting on pid 16: error waiting on PID 16 in sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3": urpc method "containerManager.WaitPID" failed: EOF error waiting on pid 16: error waiting on PID 16 in sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3": urpc method "containerManager.WaitPID" failed: EOF DIAGNOSIS: Error collecting stacks: failed to run ["/syzkaller/managers/ptrace-proxy-sandbox-race/current/image" "-root" "/syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root" "-watchdog-action=panic" "-network=none" "-debug" "-platform=ptrace" "-file-access=shared" "-network=sandbox" "debug" "-stacks" "ci-gvisor-ptrace-proxy-sandbox-race-3"]: exit status 128 I0116 18:09:01.500212 61025 x:0] *************************** I0116 18:09:01.500362 61025 x:0] Args: [/syzkaller/managers/ptrace-proxy-sandbox-race/current/image -root /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root -watchdog-action=panic -network=none -debug -platform=ptrace -file-access=shared -network=sandbox debug -stacks ci-gvisor-ptrace-proxy-sandbox-race-3] I0116 18:09:01.500425 61025 x:0] Git Revision: 92cf3764e032740f0c84a1b242c54b99f45a6bf0 I0116 18:09:01.500456 61025 x:0] PID: 61025 I0116 18:09:01.500478 61025 x:0] UID: 0, GID: 0 I0116 18:09:01.500495 61025 x:0] Configuration: I0116 18:09:01.500509 61025 x:0] RootDir: /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root I0116 18:09:01.500538 61025 x:0] Platform: ptrace I0116 18:09:01.500560 61025 x:0] FileAccess: shared, overlay: false I0116 18:09:01.500600 61025 x:0] Network: sandbox, logging: false I0116 18:09:01.500625 61025 x:0] Strace: false, max size: 1024, syscalls: [] I0116 18:09:01.500648 61025 x:0] *************************** D0116 18:09:01.500718 61025 x:0] Load container "/syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root" "ci-gvisor-ptrace-proxy-sandbox-race-3" D0116 18:09:01.503815 61025 x:0] Signal container "ci-gvisor-ptrace-proxy-sandbox-race-3": signal 0 D0116 18:09:01.503894 61025 x:0] Signal sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3" D0116 18:09:01.503926 61025 x:0] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3" D0116 18:09:01.504346 61025 x:0] urpc: successfully marshalled 117 bytes. I0116 18:09:01.561242 61025 x:0] Found sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3", PID: 3685 I0116 18:09:01.561306 61025 x:0] Retrieving sandbox stacks D0116 18:09:01.561341 61025 x:0] Stacks sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3" D0116 18:09:01.561397 61025 x:0] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3" W0116 18:09:01.561484 61025 x:0] FATAL ERROR: error retrieving stacks: error connecting to control server at PID 3685: connection refused error retrieving stacks: error connecting to control server at PID 3685: connection refused W0116 18:09:01.560819 3608 x:0] Wait RPC to container "ci-gvisor-ptrace-proxy-sandbox-race-3" failed: urpc method "containerManager.Wait" failed: EOF. Will try waiting on the sandbox process instead. D0116 18:09:01.561622 3608 x:0] Destroy container "ci-gvisor-ptrace-proxy-sandbox-race-3" D0116 18:09:01.561692 3608 x:0] Destroying container "ci-gvisor-ptrace-proxy-sandbox-race-3" D0116 18:09:01.561728 3608 x:0] Destroying root container "ci-gvisor-ptrace-proxy-sandbox-race-3" by destroying sandbox D0116 18:09:01.561764 3608 x:0] Destroy sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3" D0116 18:09:01.561801 3608 x:0] Killing sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3" W0116 18:09:06.562683 3608 x:0] error stopping container: error destroying container "ci-gvisor-ptrace-proxy-sandbox-race-3": error waiting sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3" stop: error waiting the sandbox process: no child processes I0116 18:09:06.563497 3608 x:0] Exiting with status: 6