panic: ptrace status unexpected: got 31, wanted stopped
DIAGNOSIS:
I0512 18:10:15.597838    4287 x:0] ***************************
I0512 18:10:15.597895    4287 x:0] Args: [/syzkaller/managers/main/current/image -root /syzkaller/managers/main/workdir/gvisor_root -watchdog-action=panic -network=none -debug -platform=ptrace -file-access=shared -network=none debug -stacks ci-gvisor-main-3]
I0512 18:10:15.597917    4287 x:0] Version release-20190304.1-170-g8972e47a2edb
I0512 18:10:15.597923    4287 x:0] PID: 4287
I0512 18:10:15.597929    4287 x:0] UID: 0, GID: 0
I0512 18:10:15.597933    4287 x:0] Configuration:
I0512 18:10:15.597936    4287 x:0] 		RootDir: /syzkaller/managers/main/workdir/gvisor_root
I0512 18:10:15.597940    4287 x:0] 		Platform: ptrace
I0512 18:10:15.597954    4287 x:0] 		FileAccess: shared, overlay: false
I0512 18:10:15.597961    4287 x:0] 		Network: none, logging: false
I0512 18:10:15.597967    4287 x:0] 		Strace: false, max size: 1024, syscalls: []
I0512 18:10:15.597972    4287 x:0] ***************************
D0512 18:10:15.597997    4287 x:0] Load container "/syzkaller/managers/main/workdir/gvisor_root" "ci-gvisor-main-3"
D0512 18:10:15.603096    4287 x:0] Signal container "ci-gvisor-main-3": signal 0
D0512 18:10:15.603126    4287 x:0] Signal sandbox "ci-gvisor-main-3"
D0512 18:10:15.603132    4287 x:0] Connecting to sandbox "ci-gvisor-main-3"
D0512 18:10:15.604829    4287 x:0] urpc: successfully marshalled 96 bytes.
I0512 18:10:16.118513    4287 x:0] Found sandbox "ci-gvisor-main-3", PID: 34948
I0512 18:10:16.118548    4287 x:0] Retrieving sandbox stacks
D0512 18:10:16.118630    4287 x:0] Stacks sandbox "ci-gvisor-main-3"
D0512 18:10:16.118636    4287 x:0] Connecting to sandbox "ci-gvisor-main-3"
D0512 18:10:16.118688    4287 x:0] urpc: successfully marshalled 36 bytes.
W0512 18:10:16.352997    4287 x:0] FATAL ERROR: retrieving stacks: getting sandbox "ci-gvisor-main-3" stacks: urpc method "debug.Stacks" failed: connection reset by peer
retrieving stacks: getting sandbox "ci-gvisor-main-3" stacks: urpc method "debug.Stacks" failed: connection reset by peer