panic: ptrace status unexpected: got 31, wanted stopped 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-2"]: exit status 128 I0309 09:16:27.945263 9341 x:0] *************************** I0309 09:16:27.945439 9341 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-2] I0309 09:16:27.945545 9341 x:0] Git Revision: fbacb350391667fa9ffb78a84ae51a37d477aa02 I0309 09:16:27.945567 9341 x:0] PID: 9341 I0309 09:16:27.945624 9341 x:0] UID: 0, GID: 0 I0309 09:16:27.945656 9341 x:0] Configuration: I0309 09:16:27.945686 9341 x:0] RootDir: /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root I0309 09:16:27.945739 9341 x:0] Platform: ptrace I0309 09:16:27.945779 9341 x:0] FileAccess: shared, overlay: false I0309 09:16:27.945841 9341 x:0] Network: sandbox, logging: false I0309 09:16:27.945877 9341 x:0] Strace: false, max size: 1024, syscalls: [] I0309 09:16:27.945927 9341 x:0] *************************** D0309 09:16:27.946183 9341 x:0] Load container "/syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root" "ci-gvisor-ptrace-proxy-sandbox-race-2" D0309 09:16:27.958949 9341 x:0] Signal container "ci-gvisor-ptrace-proxy-sandbox-race-2": signal 0 D0309 09:16:27.959066 9341 x:0] Signal sandbox "ci-gvisor-ptrace-proxy-sandbox-race-2" D0309 09:16:27.959321 9341 x:0] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-2" D0309 09:16:27.961064 9341 x:0] urpc: successfully marshalled 117 bytes. I0309 09:16:40.991481 9341 x:0] Found sandbox "ci-gvisor-ptrace-proxy-sandbox-race-2", PID: 28800 I0309 09:16:40.991601 9341 x:0] Retrieving sandbox stacks D0309 09:16:40.991629 9341 x:0] Stacks sandbox "ci-gvisor-ptrace-proxy-sandbox-race-2" D0309 09:16:40.991750 9341 x:0] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-2" D0309 09:16:40.992059 9341 x:0] urpc: successfully marshalled 36 bytes. W0309 09:16:41.122575 9341 x:0] FATAL ERROR: retrieving stacks: getting sandbox "ci-gvisor-ptrace-proxy-sandbox-race-2" stacks: urpc method "debug.Stacks" failed: connection reset by peer retrieving stacks: getting sandbox "ci-gvisor-ptrace-proxy-sandbox-race-2" stacks: urpc method "debug.Stacks" failed: connection reset by peer