panic: invalid allocation length: 0x0 goroutine 360 [running]: DIAGNOSIS: I0121 06:30:49.313913 29594 x:0] *************************** I0121 06:30:49.313926 29594 x:0] Args: [/syzkaller/managers/main/current/image -root /syzkaller/managers/main/workdir/gvisor_root -watchdog-action=panic -network=none -debug -alsologtostderr -platform=ptrace -file-access=shared -network=none debug -stacks --ps ci-gvisor-main-3] I0121 06:30:49.313951 29594 x:0] Version release-20200115.0-34-g10401599e104 I0121 06:30:49.313958 29594 x:0] PID: 29594 I0121 06:30:49.313964 29594 x:0] UID: 0, GID: 0 I0121 06:30:49.313969 29594 x:0] Configuration: I0121 06:30:49.313972 29594 x:0] RootDir: /syzkaller/managers/main/workdir/gvisor_root I0121 06:30:49.313975 29594 x:0] Platform: ptrace I0121 06:30:49.313978 29594 x:0] FileAccess: shared, overlay: false I0121 06:30:49.313991 29594 x:0] Network: none, logging: false I0121 06:30:49.313996 29594 x:0] Strace: false, max size: 1024, syscalls: [] I0121 06:30:49.314000 29594 x:0] *************************** D0121 06:30:49.314023 29594 x:0] Load container "/syzkaller/managers/main/workdir/gvisor_root" "ci-gvisor-main-3" D0121 06:30:49.315122 29594 x:0] Signal container "ci-gvisor-main-3": signal 0 D0121 06:30:49.315138 29594 x:0] Signal sandbox "ci-gvisor-main-3" D0121 06:30:49.315143 29594 x:0] Connecting to sandbox "ci-gvisor-main-3" D0121 06:30:49.315224 29594 x:0] urpc: successfully marshalled 96 bytes. I0121 06:30:49.602502 29594 x:0] Found sandbox "ci-gvisor-main-3", PID: 27821 I0121 06:30:49.602524 29594 x:0] Retrieving sandbox stacks D0121 06:30:49.602529 29594 x:0] Stacks sandbox "ci-gvisor-main-3" D0121 06:30:49.602534 29594 x:0] Connecting to sandbox "ci-gvisor-main-3" D0121 06:30:49.602594 29594 x:0] urpc: successfully marshalled 36 bytes. W0121 06:30:49.609301 29594 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 W0121 06:30:49.609390 29594 x:0] Failure to execute command, err: 1