panic: ptrace status unexpected: got 31, wanted stopped

goroutine 217152 [running]:
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*thread).wait(0xc000ce2ff0, 0x0, 0x5092)
	pkg/sentry/platform/ptrace/subprocess.go:323 +0x4b9
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*thread).syscall(0xc000ce2ff0, 0xc0011e7218, 0xc0011e73b8, 0x6, 0x6)
	pkg/sentry/platform/ptrace/subprocess.go:390 +0x10f
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*thread).syscallIgnoreInterrupt(0xc000ce2ff0, 0xc000ce3000, 0x9, 0xc0011e73b8, 0x6, 0x6, 0x101, 0x0, 0xb)
	pkg/sentry/platform/ptrace/subprocess.go:428 +0xd3
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*subprocess).syscall(0xc0003ec3c0, 0x9, 0xc0011e73b8, 0x6, 0x6, 0x0, 0x0, 0x0)
	pkg/sentry/platform/ptrace/subprocess.go:562 +0xf6
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*subprocess).MapFile(0xc0003ec3c0, 0x2ad14b750000, 0x12f75a0, 0xc0002d2000, 0x16980000, 0x169a1000, 0x2ad100000101, 0xc000b51800, 0x7)
	pkg/sentry/platform/ptrace/subprocess.go:571 +0x132
gvisor.googlesource.com/gvisor/pkg/sentry/mm.(*MemoryManager).mapASLocked(0xc001417b00, 0xc000b51800, 0x6, 0x2ad14b750000, 0x2ad14b771000, 0x2ad14b750000, 0x2ad14b771000, 0x0)
	pkg/sentry/mm/address_space.go:186 +0x41c
gvisor.googlesource.com/gvisor/pkg/sentry/mm.(*MemoryManager).populateVMAAndUnlock(0xc001417b00, 0x12ff380, 0xc001249500, 0xc001417b80, 0xd, 0x2ad14b750000, 0x2ad14b771000, 0x0)
	pkg/sentry/mm/syscalls.go:241 +0x292
gvisor.googlesource.com/gvisor/pkg/sentry/mm.(*MemoryManager).MMap(0xc001417b00, 0x12ff380, 0xc001249500, 0x21000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...)
	pkg/sentry/mm/syscalls.go:157 +0x397
gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.Mmap(0xc001249500, 0x0, 0x21000, 0x3, 0x20022, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, ...)
	pkg/sentry/syscalls/linux/sys_mmap.go:104 +0x336
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc001249500, 0x9, 0x0, 0x21000, 0x3, 0x20022, 0xffffffffffffffff, 0x0, 0x465c01, 0xc001249cd8, ...)
	pkg/sentry/kernel/task_syscall.go:165 +0x408
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc001249500, 0x9, 0x0, 0x21000, 0x3, 0x20022, 0xffffffffffffffff, 0x0, 0x9, 0xc001279a40)
	pkg/sentry/kernel/task_syscall.go:283 +0xb5
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc001249500, 0x9, 0x0, 0x21000, 0x3, 0x20022, 0xffffffffffffffff, 0x0, 0xc000eafd30, 0xd449e5)
	pkg/sentry/kernel/task_syscall.go:244 +0x10a
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc001249500, 0x2, 0xc0003ec3c0)
	pkg/sentry/kernel/task_syscall.go:219 +0x1b7
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc001249500, 0x12e62e0, 0x0)
	pkg/sentry/kernel/task_run.go:220 +0x18ba
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run(0xc001249500, 0x1a8d)
	pkg/sentry/kernel/task_run.go:92 +0x2e6
created by gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:286 +0x19e