panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x6f654f]

goroutine 324 [running]:
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).Credentials(0x0, 0x0)
	pkg/sentry/kernel/task_identity.go:27 +0x2f
gvisor.googlesource.com/gvisor/pkg/sentry/kernel/fasync.(*FileAsync).Callback(0xc0024625b0, 0xc0024625b8)
	pkg/sentry/kernel/fasync/fasync.go:61 +0x6d
gvisor.googlesource.com/gvisor/pkg/waiter.(*Queue).Notify(0xc000889720, 0xca0004)
	pkg/waiter/waiter.go:190 +0xa1
gvisor.googlesource.com/gvisor/pkg/sentry/kernel/pipe.(*ReaderWriter).Read(0xc000a30000, 0xcaf000, 0xc000b42000, 0xc00015a080, 0xcadce0, 0xc00016c580, 0x0, 0x1, 0xc4264c6084, 0x1ff7c, ...)
	pkg/sentry/kernel/pipe/reader_writer.go:57 +0xf9
gvisor.googlesource.com/gvisor/pkg/sentry/fs.(*File).Readv(0xc00015a080, 0xcaf000, 0xc000b42000, 0xcadce0, 0xc00016c580, 0x0, 0x1, 0xc4264c6084, 0x1ff7c, 0x100, ...)
	pkg/sentry/fs/file.go:232 +0x118
gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.readv(0xc000b42000, 0xc00015a080, 0xcadce0, 0xc00016c580, 0x0, 0x1, 0xc4264c6084, 0x1ff7c, 0x100, 0x1ff7c, ...)
	pkg/sentry/syscalls/linux/sys_read.go:191 +0x8d
gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.Read(0xc000b42000, 0xf, 0xc4264c6084, 0x1ff7c, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...)
	pkg/sentry/syscalls/linux/sys_read.go:67 +0x23a
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000b42000, 0x0, 0xf, 0xc4264c6084, 0x1ff7c, 0x0, 0x0, 0x0, 0xc0008b4780, 0xbd1b00, ...)
	pkg/sentry/kernel/task_syscall.go:162 +0x30a
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000b42000, 0x0, 0xf, 0xc4264c6084, 0x1ff7c, 0x0, 0x0, 0x0, 0x0, 0x0)
	pkg/sentry/kernel/task_syscall.go:280 +0x69
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000b42000, 0x0, 0xf, 0xc4264c6084, 0x1ff7c, 0x0, 0x0, 0x0, 0x100060000, 0x0)
	pkg/sentry/kernel/task_syscall.go:241 +0x99
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000b42000, 0x2, 0xc00046e900)
	pkg/sentry/kernel/task_syscall.go:216 +0x142
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc000b42000, 0xca1f40, 0x0)
	pkg/sentry/kernel/task_run.go:219 +0xfda
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run(0xc000b42000, 0x31)
	pkg/sentry/kernel/task_run.go:95 +0x163
created by gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:275 +0xfe