panic: ptrace status unexpected: got 31, wanted stopped

goroutine 251314 [running]:
DIAGNOSIS:


Error collecting stacks: failed to run ["/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"]: exit status 128
I0118 01:22:47.981795    9470 x:0] ***************************
I0118 01:22:47.981868    9470 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]
I0118 01:22:47.981885    9470 x:0] Git Revision: 12bc7834dccdcd21353fc476dc76a5c9bc0d47bb
I0118 01:22:47.981890    9470 x:0] PID: 9470
I0118 01:22:47.981896    9470 x:0] UID: 0, GID: 0
I0118 01:22:47.981904    9470 x:0] Configuration:
I0118 01:22:47.981908    9470 x:0] 		RootDir: /syzkaller/managers/ptrace-direct-overlay-host/workdir/gvisor_root
I0118 01:22:47.981911    9470 x:0] 		Platform: ptrace
I0118 01:22:47.981925    9470 x:0] 		FileAccess: shared, overlay: false
I0118 01:22:47.981936    9470 x:0] 		Network: host, logging: false
I0118 01:22:47.981942    9470 x:0] 		Strace: false, max size: 1024, syscalls: []
I0118 01:22:47.981946    9470 x:0] ***************************
D0118 01:22:47.981961    9470 x:0] Load container "/syzkaller/managers/ptrace-direct-overlay-host/workdir/gvisor_root" "ci-gvisor-ptrace-direct-overlay-host-1"
D0118 01:22:47.982715    9470 x:0] Signal container "ci-gvisor-ptrace-direct-overlay-host-1": signal 0
D0118 01:22:47.982737    9470 x:0] Signal sandbox "ci-gvisor-ptrace-direct-overlay-host-1"
D0118 01:22:47.982742    9470 x:0] Connecting to sandbox "ci-gvisor-ptrace-direct-overlay-host-1"
D0118 01:22:47.983102    9470 x:0] urpc: successfully marshalled 118 bytes.
I0118 01:22:48.343738    9470 x:0] Found sandbox "ci-gvisor-ptrace-direct-overlay-host-1", PID: 2997
I0118 01:22:48.343806    9470 x:0] Retrieving sandbox stacks
D0118 01:22:48.343814    9470 x:0] Stacks sandbox "ci-gvisor-ptrace-direct-overlay-host-1"
D0118 01:22:48.343819    9470 x:0] Connecting to sandbox "ci-gvisor-ptrace-direct-overlay-host-1"
D0118 01:22:48.343884    9470 x:0] urpc: successfully marshalled 36 bytes.
W0118 01:22:48.403256    9470 x:0] FATAL ERROR: error retrieving stacks: err getting sandbox "ci-gvisor-ptrace-direct-overlay-host-1" stacks: urpc method "debug.Stacks" failed: connection reset by peer
error retrieving stacks: err getting sandbox "ci-gvisor-ptrace-direct-overlay-host-1" stacks: urpc method "debug.Stacks" failed: connection reset by peer
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*thread).wait(0xc0013ccc30, 0x0, 0x1f9e)
	pkg/sentry/platform/ptrace/subprocess.go:323 +0x3fb
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*thread).syscall(0xc0013ccc30, 0xc000e49ad8, 0xc000e49c68, 0x6, 0x6)
	pkg/sentry/platform/ptrace/subprocess.go:390 +0xc3
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*thread).syscallIgnoreInterrupt(0xc0013ccc30, 0xc0013ccc40, 0x9, 0xc000e49c68, 0x6, 0x6, 0xc000bb41f0, 0x0, 0xc000e49cb0)
	pkg/sentry/platform/ptrace/subprocess.go:428 +0xc2
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*subprocess).syscall(0xc0002f6cc0, 0x9, 0xc000e49c68, 0x6, 0x6, 0x0, 0x0, 0x0)
	pkg/sentry/platform/ptrace/subprocess.go:562 +0xe8
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*subprocess).MapFile(0xc0002f6cc0, 0x400000, 0xc, 0xe8ad000, 0xe98e000, 0x10001, 0xc000bb3b70, 0x0)
	pkg/sentry/platform/ptrace/subprocess.go:571 +0x107
gvisor.googlesource.com/gvisor/pkg/sentry/platform/filemem.(*FileMem).MapInto(0xc0002d6000, 0xd5abc0, 0xc0002f6cc0, 0x400000, 0xe8ad000, 0xe98e000, 0x10001, 0xc000e49d90, 0x695441)
	pkg/sentry/platform/filemem/filemem.go:512 +0xeb
gvisor.googlesource.com/gvisor/pkg/sentry/mm.(*MemoryManager).mapASLocked(0xc000bb3b00, 0xc000bb41f0, 0x0, 0x456000, 0x457000, 0x456000, 0x457000, 0x0)
	pkg/sentry/mm/address_space.go:186 +0x1aa
gvisor.googlesource.com/gvisor/pkg/sentry/mm.(*MemoryManager).HandleUserFault(0xc000bb3b00, 0xd5b0a0, 0xc0010f9500, 0x45660b, 0x10001, 0x7fe110d4ba90, 0x0, 0x10001)
	pkg/sentry/mm/syscalls.go:71 +0x27f
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc0010f9500, 0xd4e280, 0x0)
	pkg/sentry/kernel/task_run.go:251 +0x77b
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run(0xc0010f9500, 0x6e1)
	pkg/sentry/kernel/task_run.go:91 +0x149
created by gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:279 +0xfe