panic: ptrace status unexpected: got 31, wanted stopped

goroutine 7119930 [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-3"]: exit status 128
I0227 09:30:12.064317   60697 x:0] ***************************
I0227 09:30:12.064430   60697 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-3]
I0227 09:30:12.065758   60697 x:0] Git Revision: cff2c57192ccd5ccf4cec6280afcd724dc1135d1
I0227 09:30:12.065915   60697 x:0] PID: 60697
I0227 09:30:12.066003   60697 x:0] UID: 0, GID: 0
I0227 09:30:12.066112   60697 x:0] Configuration:
I0227 09:30:12.066194   60697 x:0] 		RootDir: /syzkaller/managers/main/workdir/gvisor_root
I0227 09:30:12.066261   60697 x:0] 		Platform: ptrace
I0227 09:30:12.066367   60697 x:0] 		FileAccess: shared, overlay: false
I0227 09:30:12.066443   60697 x:0] 		Network: none, logging: false
I0227 09:30:12.066533   60697 x:0] 		Strace: false, max size: 1024, syscalls: []
I0227 09:30:12.066638   60697 x:0] ***************************
D0227 09:30:12.066727   60697 x:0] Load container "/syzkaller/managers/main/workdir/gvisor_root" "ci-gvisor-main-3"
D0227 09:30:12.067659   60697 x:0] Signal container "ci-gvisor-main-3": signal 0
D0227 09:30:12.067746   60697 x:0] Signal sandbox "ci-gvisor-main-3"
D0227 09:30:12.067753   60697 x:0] Connecting to sandbox "ci-gvisor-main-3"
D0227 09:30:12.068219   60697 x:0] urpc: successfully marshalled 96 bytes.
I0227 09:30:12.792789   60697 x:0] Found sandbox "ci-gvisor-main-3", PID: 47778
I0227 09:30:12.792845   60697 x:0] Retrieving sandbox stacks
D0227 09:30:12.792857   60697 x:0] Stacks sandbox "ci-gvisor-main-3"
D0227 09:30:12.792862   60697 x:0] Connecting to sandbox "ci-gvisor-main-3"
D0227 09:30:12.792973   60697 x:0] urpc: successfully marshalled 36 bytes.
W0227 09:30:12.905858   60697 x:0] FATAL ERROR: retrieving stacks: getting sandbox "ci-gvisor-main-3" stacks: urpc method "debug.Stacks" failed: connection reset by peer
retrieving stacks: getting sandbox "ci-gvisor-main-3" stacks: urpc method "debug.Stacks" failed: connection reset by peer
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*thread).wait(0xc002c8a5a0, 0x0, 0xb099)
	pkg/sentry/platform/ptrace/subprocess.go:323 +0x3fb
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*thread).syscall(0xc002c8a5a0, 0xc002062cb0, 0xc002062e48, 0x2, 0x2)
	pkg/sentry/platform/ptrace/subprocess.go:390 +0xc3
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*thread).syscallIgnoreInterrupt(0xc002c8a5a0, 0xc002c8a5b0, 0xb, 0xc002062e48, 0x2, 0x2, 0xc0005e1678, 0x0, 0xc000991f38)
	pkg/sentry/platform/ptrace/subprocess.go:428 +0xc2
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*subprocess).syscall(0xc0001861c0, 0xb, 0xc000991e48, 0x2, 0x2, 0x0, 0x0, 0x0)
	pkg/sentry/platform/ptrace/subprocess.go:562 +0xe8
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*subprocess).Unmap(0xc0001861c0, 0x0, 0x7fffffff0000)
	pkg/sentry/platform/ptrace/subprocess.go:602 +0x22e
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*subprocess).unmap(0xc0001861c0)
	pkg/sentry/platform/ptrace/subprocess.go:215 +0x40
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*subprocess).Release.func1(0xc0001861c0)
	pkg/sentry/platform/ptrace/subprocess.go:232 +0x2f
created by gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*subprocess).Release
	pkg/sentry/platform/ptrace/subprocess.go:231 +0x3f