panic: runtime error: invalid memory address or nil pointer dereference
	panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xf567bd]

goroutine 2390 gp=0xc001f821c0 m=24 mp=0xc0007cd808 [running]:
panic({0x123d1c0?, 0x2209ba0?})
	GOROOT/src/runtime/panic.go:811 +0x168 fp=0xc001a3b578 sp=0xc001a3b4c8 pc=0x4788c8
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:262
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:925 +0x359 fp=0xc001a3b5d8 sp=0xc001a3b578 pc=0x47b319
gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*DeviceFD).EventUnregister(0xc001a3b660?, 0x440438?)
	pkg/sentry/fsimpl/fuse/dev.go:160 +0x7d fp=0xc001a3b620 sp=0xc001a3b5d8 pc=0xf567bd
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).EventUnregister(...)
	pkg/sentry/vfs/file_description.go:619
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.releaseState(0xc002144c88, {0xc002785830, 0x1, 0xc001f821c0?})
	pkg/sentry/syscalls/linux/sys_poll.go:94 +0x65 fp=0xc001a3b670 sp=0xc001a3b620 pc=0xc37305
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.pollBlock.deferwrap1()
	pkg/sentry/syscalls/linux/sys_poll.go:116 +0x2c fp=0xc001a3b6a0 sp=0xc001a3b670 pc=0xc37c4c
panic({0x123d1c0?, 0x2209ba0?})
	GOROOT/src/runtime/panic.go:792 +0x132 fp=0xc001a3b750 sp=0xc001a3b6a0 pc=0x478892
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:262
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:925 +0x359 fp=0xc001a3b7b0 sp=0xc001a3b750 pc=0x47b319
gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*DeviceFD).EventRegister(0xc001f28440?, 0x3?)
	pkg/sentry/fsimpl/fuse/dev.go:152 +0x83 fp=0xc001a3b808 sp=0xc001a3b7b0 pc=0xf56663
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).EventRegister(...)
	pkg/sentry/vfs/file_description.go:612
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.initReadiness(0xc002144c88, 0xc0028832e0, 0xc002785830, 0xc000a0aaf0)
	pkg/sentry/syscalls/linux/sys_poll.go:80 +0xea fp=0xc001a3b870 sp=0xc001a3b808 pc=0xc36d8a
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.pollBlock(0xc002144c88, {0xc0028832e0, 0x1, 0xc001a3b9d8?}, 0xf4240)
	pkg/sentry/syscalls/linux/sys_poll.go:119 +0x1b3 fp=0xc001a3b958 sp=0xc001a3b870 pc=0xc37893
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.doPoll(0xc002144c88, 0x200000000600, 0x1, 0xf4240)
	pkg/sentry/syscalls/linux/sys_poll.go:194 +0xa5 fp=0xc001a3b9d8 sp=0xc001a3b958 pc=0xc37e45
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.poll(0xc002144c88, 0x200000000600, 0x1, 0x0?)
	pkg/sentry/syscalls/linux/sys_poll.go:415 +0x29 fp=0xc001a3ba48 sp=0xc001a3b9d8 pc=0xc38f89
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Poll(0xc002144c88?, 0x10?, {{0x200000000600}, {0x1}, {0x1}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_poll.go:433 +0x28 fp=0xc001a3ba78 sp=0xc001a3ba48 pc=0xc39168
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc002144c88, 0x7, {{0x200000000600}, {0x1}, {0x1}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:143 +0x655 fp=0xc001a3bca8 sp=0xc001a3ba78 pc=0xaa0a95
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc002144c88, 0x7, {{0x200000000600}, {0x1}, {0x1}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:323 +0x45 fp=0xc001a3bd00 sp=0xc001a3bca8 pc=0xaa1be5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc002144c88, 0x7, {{0x200000000600}, {0x1}, {0x1}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:283 +0x65 fp=0xc001a3bd50 sp=0xc001a3bd00 pc=0xaa1905
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc002faa790?)
	pkg/sentry/kernel/task_syscall.go:258 +0x2a5 fp=0xc001a3be28 sp=0xc001a3bd50 pc=0xaa1685
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0027a4090?, 0xc002144c88)
	pkg/sentry/kernel/task_run.go:269 +0xebc fp=0xc001a3bf30 sp=0xc001a3be28 pc=0xa9745c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc002144c88, 0x255)
	pkg/sentry/kernel/task_run.go:97 +0x214 fp=0xc001a3bfc0 sp=0xc001a3bf30 pc=0xa95f34
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:416 +0x25 fp=0xc001a3bfe0 sp=0xc001a3bfc0 pc=0xa9f4e5
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc001a3bfe8 sp=0xc001a3bfe0 pc=0x4816e1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 2335
	pkg/sentry/kernel/task_start.go:416 +0xc5