panic: munmap(2aafbeab0000, 1000)) failed: function not implemented
DIAGNOSIS:
I1201 06:47:22.221112   58186 x:0] ***************************
I1201 06:47:22.221136   58186 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 -alsologtostderr -platform=ptrace -file-access=shared -network=host debug -stacks ci-gvisor-ptrace-direct-overlay-host-3]
I1201 06:47:22.221160   58186 x:0] Version release-20191114.0-42-g10bbcf97d25b
I1201 06:47:22.221488   58186 x:0] PID: 58186
I1201 06:47:22.221495   58186 x:0] UID: 0, GID: 0
I1201 06:47:22.221500   58186 x:0] Configuration:
I1201 06:47:22.221519   58186 x:0] 		RootDir: /syzkaller/managers/ptrace-direct-overlay-host/workdir/gvisor_root
I1201 06:47:22.221549   58186 x:0] 		Platform: ptrace
I1201 06:47:22.221554   58186 x:0] 		FileAccess: shared, overlay: false
I1201 06:47:22.221583   58186 x:0] 		Network: host, logging: false
I1201 06:47:22.221597   58186 x:0] 		Strace: false, max size: 1024, syscalls: []
I1201 06:47:22.221607   58186 x:0] ***************************
D1201 06:47:22.221847   58186 x:0] Load container "/syzkaller/managers/ptrace-direct-overlay-host/workdir/gvisor_root" "ci-gvisor-ptrace-direct-overlay-host-3"
D1201 06:47:22.224507   58186 x:0] Signal container "ci-gvisor-ptrace-direct-overlay-host-3": signal 0
D1201 06:47:22.224549   58186 x:0] Signal sandbox "ci-gvisor-ptrace-direct-overlay-host-3"
D1201 06:47:22.224556   58186 x:0] Connecting to sandbox "ci-gvisor-ptrace-direct-overlay-host-3"
D1201 06:47:22.235465   58186 x:0] urpc: successfully marshalled 118 bytes.
I1201 06:47:22.897065   58186 x:0] Found sandbox "ci-gvisor-ptrace-direct-overlay-host-3", PID: 20888
I1201 06:47:22.897089   58186 x:0] Retrieving sandbox stacks
D1201 06:47:22.897095   58186 x:0] Stacks sandbox "ci-gvisor-ptrace-direct-overlay-host-3"
D1201 06:47:22.897102   58186 x:0] Connecting to sandbox "ci-gvisor-ptrace-direct-overlay-host-3"
D1201 06:47:22.897171   58186 x:0] urpc: successfully marshalled 36 bytes.
W1201 06:47:22.960585   58186 x:0] FATAL ERROR: retrieving stacks: getting sandbox "ci-gvisor-ptrace-direct-overlay-host-3" stacks: urpc method "debug.Stacks" failed: connection reset by peer
retrieving stacks: getting sandbox "ci-gvisor-ptrace-direct-overlay-host-3" stacks: urpc method "debug.Stacks" failed: connection reset by peer
W1201 06:47:22.960719   58186 x:0] Failure to execute command, err: 1