panic: munmap(7f2064c00000, 200000)) failed: function not implemented

goroutine 4076620 [running]:
DIAGNOSIS:
I0327 09:30:06.611009   18726 x:0] ***************************
I0327 09:30:06.611126   18726 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-1]
I0327 09:30:06.611166   18726 x:0] Git Revision: cea1dd7d21b976ad5cb145b94be7b1bf879235be
I0327 09:30:06.611197   18726 x:0] PID: 18726
I0327 09:30:06.611229   18726 x:0] UID: 0, GID: 0
I0327 09:30:06.611271   18726 x:0] Configuration:
I0327 09:30:06.611300   18726 x:0] 		RootDir: /syzkaller/managers/ptrace-direct-overlay-host/workdir/gvisor_root
I0327 09:30:06.611341   18726 x:0] 		Platform: ptrace
I0327 09:30:06.611369   18726 x:0] 		FileAccess: shared, overlay: false
I0327 09:30:06.611408   18726 x:0] 		Network: host, logging: false
I0327 09:30:06.611426   18726 x:0] 		Strace: false, max size: 1024, syscalls: []
I0327 09:30:06.611432   18726 x:0] ***************************
D0327 09:30:06.611459   18726 x:0] Load container "/syzkaller/managers/ptrace-direct-overlay-host/workdir/gvisor_root" "ci-gvisor-ptrace-direct-overlay-host-1"
D0327 09:30:06.613076   18726 x:0] Signal container "ci-gvisor-ptrace-direct-overlay-host-1": signal 0
D0327 09:30:06.613106   18726 x:0] Signal sandbox "ci-gvisor-ptrace-direct-overlay-host-1"
D0327 09:30:06.613112   18726 x:0] Connecting to sandbox "ci-gvisor-ptrace-direct-overlay-host-1"
D0327 09:30:06.613438   18726 x:0] urpc: successfully marshalled 118 bytes.
I0327 09:30:07.012116   18726 x:0] Found sandbox "ci-gvisor-ptrace-direct-overlay-host-1", PID: 51585
I0327 09:30:07.012136   18726 x:0] Retrieving sandbox stacks
D0327 09:30:07.012140   18726 x:0] Stacks sandbox "ci-gvisor-ptrace-direct-overlay-host-1"
D0327 09:30:07.012144   18726 x:0] Connecting to sandbox "ci-gvisor-ptrace-direct-overlay-host-1"
D0327 09:30:07.012204   18726 x:0] urpc: successfully marshalled 36 bytes.
W0327 09:30:07.053149   18726 x:0] FATAL ERROR: retrieving stacks: getting sandbox "ci-gvisor-ptrace-direct-overlay-host-1" stacks: urpc method "debug.Stacks" failed: connection reset by peer
retrieving stacks: getting sandbox "ci-gvisor-ptrace-direct-overlay-host-1" stacks: urpc method "debug.Stacks" failed: connection reset by peer