panic: unable to attach: operation not permitted

goroutine 491 [running]:
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*thread).attach(0xc0005962d0)
	pkg/sentry/platform/ptrace/subprocess.go:258 +0x39a
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*subprocess).newThread(0xc0001f2000, 0xc000990000)
	pkg/sentry/platform/ptrace/subprocess.go:249 +0xb6
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*subprocess).newThread-fm(0xc000b3b970)
	pkg/sentry/platform/ptrace/subprocess.go:464 +0x42
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*threadPool).lookupOrCreate(0xc0001f2018, 0xf762, 0xc000b3ba28, 0x815613)
	pkg/sentry/platform/ptrace/subprocess.go:96 +0x2d3
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*subprocess).syscall(0xc0001f2000, 0x9, 0xc000b3ba90, 0x6, 0x6, 0x0, 0x0, 0x0)
	pkg/sentry/platform/ptrace/subprocess.go:560 +0xaf
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*subprocess).MapFile(0xc0001f2000, 0x7f9664800000, 0xb, 0xc626000, 0xc71c000, 0x1, 0x5, 0x45d2c2)
	pkg/sentry/platform/ptrace/subprocess.go:571 +0x126
gvisor.googlesource.com/gvisor/pkg/sentry/platform/filemem.(*FileMem).MapInto(0xc000153b00, 0x11db840, 0xc0001f2000, 0x7f9664800000, 0xc626000, 0xc71c000, 0x1, 0xc000747c80, 0xc0001c4bd0)
	pkg/sentry/platform/filemem/filemem.go:512 +0x11d
gvisor.googlesource.com/gvisor/pkg/sentry/mm.(*MemoryManager).mapASLocked(0xc0001c4580, 0xc0001c4be8, 0x5, 0x7f96648f5000, 0x7f96648f6000, 0x7f96648f5000, 0x7f96648f6000, 0x0)
	pkg/sentry/mm/address_space.go:184 +0x38b
gvisor.googlesource.com/gvisor/pkg/sentry/mm.(*MemoryManager).HandleUserFault(0xc0001c4580, 0x11dc260, 0xc00031aa80, 0x7f96648f5a80, 0x1, 0x7f96648f5a80, 0x0, 0x1)
	pkg/sentry/mm/syscalls.go:70 +0x295
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc00031aa80, 0x11cd860, 0x0)
	pkg/sentry/kernel/task_run.go:255 +0x987
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run(0xc00031aa80, 0x61)
	pkg/sentry/kernel/task_run.go:95 +0x27a
created by gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:279 +0x19e