panic: ptrace status unexpected: got 31, wanted stopped

goroutine 7730234 [running]:
DIAGNOSIS:


Error collecting stacks: failed to run ["/syzkaller/managers/main/current/image" "-root" "/syzkaller/managers/main/workdir/gvisor_root" "-watchdog-action=panic" "-network=none" "-debug" "-platform=ptrace" "-file-access=shared" "-network=none" "debug" "-stacks" "ci-gvisor-main-2"]: exit status 128
I0301 03:01:19.428067   41835 x:0] ***************************
I0301 03:01:19.428133   41835 x:0] Args: [/syzkaller/managers/main/current/image -root /syzkaller/managers/main/workdir/gvisor_root -watchdog-action=panic -network=none -debug -platform=ptrace -file-access=shared -network=none debug -stacks ci-gvisor-main-2]
I0301 03:01:19.428149   41835 x:0] Git Revision: 383078688353feb4ae3714aa4b1d79aea519f7a4
I0301 03:01:19.428154   41835 x:0] PID: 41835
I0301 03:01:19.428160   41835 x:0] UID: 0, GID: 0
I0301 03:01:19.428164   41835 x:0] Configuration:
I0301 03:01:19.428167   41835 x:0] 		RootDir: /syzkaller/managers/main/workdir/gvisor_root
I0301 03:01:19.428170   41835 x:0] 		Platform: ptrace
I0301 03:01:19.428177   41835 x:0] 		FileAccess: shared, overlay: false
I0301 03:01:19.428184   41835 x:0] 		Network: none, logging: false
I0301 03:01:19.428190   41835 x:0] 		Strace: false, max size: 1024, syscalls: []
I0301 03:01:19.428194   41835 x:0] ***************************
D0301 03:01:19.428210   41835 x:0] Load container "/syzkaller/managers/main/workdir/gvisor_root" "ci-gvisor-main-2"
D0301 03:01:19.429069   41835 x:0] Signal container "ci-gvisor-main-2": signal 0
D0301 03:01:19.429095   41835 x:0] Signal sandbox "ci-gvisor-main-2"
D0301 03:01:19.429100   41835 x:0] Connecting to sandbox "ci-gvisor-main-2"
D0301 03:01:19.429488   41835 x:0] urpc: successfully marshalled 96 bytes.
I0301 03:01:19.835819   41835 x:0] Found sandbox "ci-gvisor-main-2", PID: 19843
I0301 03:01:19.835841   41835 x:0] Retrieving sandbox stacks
D0301 03:01:19.835846   41835 x:0] Stacks sandbox "ci-gvisor-main-2"
D0301 03:01:19.835851   41835 x:0] Connecting to sandbox "ci-gvisor-main-2"
D0301 03:01:19.835905   41835 x:0] urpc: successfully marshalled 36 bytes.
W0301 03:01:19.910234   41835 x:0] FATAL ERROR: retrieving stacks: getting sandbox "ci-gvisor-main-2" stacks: urpc method "debug.Stacks" failed: connection reset by peer
retrieving stacks: getting sandbox "ci-gvisor-main-2" stacks: urpc method "debug.Stacks" failed: connection reset by peer
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*thread).wait(0xc000d52f00, 0x0, 0x367b)
	pkg/sentry/platform/ptrace/subprocess.go:323 +0x3fb
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*thread).syscall(0xc000d52f00, 0xc0012c1ad8, 0xc0012c1c68, 0x6, 0x6)
	pkg/sentry/platform/ptrace/subprocess.go:390 +0xc3
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*thread).syscallIgnoreInterrupt(0xc000d52f00, 0xc000d52f10, 0x9, 0xc0012c1c68, 0x6, 0x6, 0xc000ad8f70, 0x5, 0xc0012c1cb0)
	pkg/sentry/platform/ptrace/subprocess.go:428 +0xc2
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*subprocess).syscall(0xc0003bebc0, 0x9, 0xc0012c1c68, 0x6, 0x6, 0x0, 0x0, 0x0)
	pkg/sentry/platform/ptrace/subprocess.go:562 +0xe8
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*subprocess).MapFile(0xc0003bebc0, 0xa37000, 0xc, 0x119fd000, 0x119ff000, 0x101, 0xc000ad88f0, 0x5)
	pkg/sentry/platform/ptrace/subprocess.go:571 +0x107
gvisor.googlesource.com/gvisor/pkg/sentry/platform/filemem.(*FileMem).MapInto(0xc000284000, 0xd75fa0, 0xc0003bebc0, 0xa37000, 0x119fd000, 0x119ff000, 0x101, 0xc0012c1d90, 0x6e1951)
	pkg/sentry/platform/filemem/filemem.go:512 +0xeb
gvisor.googlesource.com/gvisor/pkg/sentry/mm.(*MemoryManager).mapASLocked(0xc000ad8880, 0xc000ad8f70, 0x5, 0xa37000, 0xa38000, 0xa37000, 0xa38000, 0x0)
	pkg/sentry/mm/address_space.go:186 +0x1aa
gvisor.googlesource.com/gvisor/pkg/sentry/mm.(*MemoryManager).HandleUserFault(0xc000ad8880, 0xd76600, 0xc002c2ea80, 0xa37910, 0x1, 0x7fb95b7810f0, 0x0, 0x1)
	pkg/sentry/mm/syscalls.go:71 +0x27f
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc002c2ea80, 0xd69660, 0x0)
	pkg/sentry/kernel/task_run.go:251 +0x77b
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run(0xc002c2ea80, 0xf6f3)
	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