panic: Sentry detected stuck task(s). See stack trace and message above for more details

goroutine 161 [running]:
DIAGNOSIS:
I0522 12:59:57.768991   51075 x:0] ***************************
I0522 12:59:57.769041   51075 x:0] Args: [/syzkaller/managers/ptrace-direct-overlay-host/current/image -root /syzkaller/managers/ptrace-direct-overlay-host/workdir/gvisor_root -watchdog-action=panic -network=none -debug -platform=ptrace -file-access=shared -network=host debug -stacks ci-gvisor-ptrace-direct-overlay-host-2]
I0522 12:59:57.769061   51075 x:0] Version release-20190304.1-217-gae1bb0887175
I0522 12:59:57.769066   51075 x:0] PID: 51075
I0522 12:59:57.769259   51075 x:0] UID: 0, GID: 0
I0522 12:59:57.769264   51075 x:0] Configuration:
I0522 12:59:57.769275   51075 x:0] 		RootDir: /syzkaller/managers/ptrace-direct-overlay-host/workdir/gvisor_root
I0522 12:59:57.769278   51075 x:0] 		Platform: ptrace
I0522 12:59:57.769285   51075 x:0] 		FileAccess: shared, overlay: false
I0522 12:59:57.769290   51075 x:0] 		Network: host, logging: false
I0522 12:59:57.769296   51075 x:0] 		Strace: false, max size: 1024, syscalls: []
I0522 12:59:57.769300   51075 x:0] ***************************
D0522 12:59:57.769865   51075 x:0] Load container "/syzkaller/managers/ptrace-direct-overlay-host/workdir/gvisor_root" "ci-gvisor-ptrace-direct-overlay-host-2"
D0522 12:59:57.783887   51075 x:0] Signal container "ci-gvisor-ptrace-direct-overlay-host-2": signal 0
D0522 12:59:57.784047   51075 x:0] Signal sandbox "ci-gvisor-ptrace-direct-overlay-host-2"
D0522 12:59:57.787693   51075 x:0] Connecting to sandbox "ci-gvisor-ptrace-direct-overlay-host-2"
D0522 12:59:57.788220   51075 x:0] urpc: successfully marshalled 118 bytes.
I0522 12:59:58.354517   51075 x:0] Found sandbox "ci-gvisor-ptrace-direct-overlay-host-2", PID: 19158
I0522 12:59:58.354539   51075 x:0] Retrieving sandbox stacks
D0522 12:59:58.354545   51075 x:0] Stacks sandbox "ci-gvisor-ptrace-direct-overlay-host-2"
D0522 12:59:58.354557   51075 x:0] Connecting to sandbox "ci-gvisor-ptrace-direct-overlay-host-2"
D0522 12:59:58.354608   51075 x:0] urpc: successfully marshalled 36 bytes.
W0522 12:59:58.449602   51075 x:0] FATAL ERROR: retrieving stacks: getting sandbox "ci-gvisor-ptrace-direct-overlay-host-2" stacks: urpc method "debug.Stacks" failed: connection reset by peer
retrieving stacks: getting sandbox "ci-gvisor-ptrace-direct-overlay-host-2" stacks: urpc method "debug.Stacks" failed: connection reset by peer