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 3290 gp=0xc000f14540 m=19 mp=0xc0005ad008 [running]:
panic({0x123d1c0?, 0x2209ba0?})
	GOROOT/src/runtime/panic.go:811 +0x168 fp=0xc000989570 sp=0xc0009894c0 pc=0x4788c8
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:262
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:925 +0x359 fp=0xc0009895d0 sp=0xc000989570 pc=0x47b319
gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*DeviceFD).EventUnregister(0xc000989658?, 0x440438?)
	pkg/sentry/fsimpl/fuse/dev.go:160 +0x7d fp=0xc000989618 sp=0xc0009895d0 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(0xc00225f908, {0xc002577890, 0x1, 0xc000f14540?})
	pkg/sentry/syscalls/linux/sys_poll.go:94 +0x65 fp=0xc000989668 sp=0xc000989618 pc=0xc37305
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.pollBlock.deferwrap1()
	pkg/sentry/syscalls/linux/sys_poll.go:116 +0x2c fp=0xc000989698 sp=0xc000989668 pc=0xc37c4c
panic({0x123d1c0?, 0x2209ba0?})
	GOROOT/src/runtime/panic.go:792 +0x132 fp=0xc000989748 sp=0xc000989698 pc=0x478892
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:262
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:925 +0x359 fp=0xc0009897a8 sp=0xc000989748 pc=0x47b319
gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*DeviceFD).EventRegister(0xc0004d4cc0?, 0x3?)
	pkg/sentry/fsimpl/fuse/dev.go:152 +0x83 fp=0xc000989800 sp=0xc0009897a8 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(0xc00225f908, 0xc0015e8720, 0xc002577890, 0xc001a70770)
	pkg/sentry/syscalls/linux/sys_poll.go:80 +0xea fp=0xc000989868 sp=0xc000989800 pc=0xc36d8a
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.pollBlock(0xc00225f908, {0xc0015e8720, 0x1, 0x8?}, 0x1868be096b9dd3c9)
	pkg/sentry/syscalls/linux/sys_poll.go:119 +0x1b3 fp=0xc000989950 sp=0xc000989868 pc=0xc37893
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.doPoll(0xc00225f908, 0x200000000080, 0x1, 0x1868be096b9dd3c9)
	pkg/sentry/syscalls/linux/sys_poll.go:194 +0xa5 fp=0xc0009899d0 sp=0xc000989950 pc=0xc37e45
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Ppoll(0xc00225f908, 0x49f2f9?, {{0x200000000080}, {0x1}, {0x200000000100}, {0x200000000140}, {0x8}, {0x0}})
	pkg/sentry/syscalls/linux/sys_poll.go:459 +0xe5 fp=0xc000989a78 sp=0xc0009899d0 pc=0xc39285
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00225f908, 0x10f, {{0x200000000080}, {0x1}, {0x200000000100}, {0x200000000140}, {0x8}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:143 +0x655 fp=0xc000989ca8 sp=0xc000989a78 pc=0xaa0a95
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00225f908, 0x10f, {{0x200000000080}, {0x1}, {0x200000000100}, {0x200000000140}, {0x8}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:323 +0x45 fp=0xc000989d00 sp=0xc000989ca8 pc=0xaa1be5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc00225f908, 0x10f, {{0x200000000080}, {0x1}, {0x200000000100}, {0x200000000140}, {0x8}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:283 +0x65 fp=0xc000989d50 sp=0xc000989d00 pc=0xaa1905
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00021dd40?)
	pkg/sentry/kernel/task_syscall.go:258 +0x2a5 fp=0xc000989e28 sp=0xc000989d50 pc=0xaa1685
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc00213e6c0?, 0xc00225f908)
	pkg/sentry/kernel/task_run.go:269 +0xebc fp=0xc000989f30 sp=0xc000989e28 pc=0xa9745c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00225f908, 0x3b1)
	pkg/sentry/kernel/task_run.go:97 +0x214 fp=0xc000989fc0 sp=0xc000989f30 pc=0xa95f34
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:416 +0x25 fp=0xc000989fe0 sp=0xc000989fc0 pc=0xa9f4e5
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000989fe8 sp=0xc000989fe0 pc=0x4816e1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 3352
	pkg/sentry/kernel/task_start.go:416 +0xc5