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=0x173f504]

goroutine 3079 gp=0xc001c41880 m=0 mp=0x2dd9be0 [running]:
panic({0x1c93940?, 0x2d7a1d0?})
	GOROOT/src/runtime/panic.go:811 +0x168 fp=0xc0015d5008 sp=0xc0015d4f58 pc=0x47d728
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:262
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:925 +0x359 fp=0xc0015d5068 sp=0xc0015d5008 pc=0x4804b9
gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*DeviceFD).EventUnregister(0xc00054da00, 0xc00034c4b8)
	pkg/sentry/fsimpl/fuse/dev.go:160 +0xa4 fp=0xc0015d50d0 sp=0xc0015d5068 pc=0x173f504
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).EventUnregister(...)
	pkg/sentry/vfs/file_description.go:619
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.releaseState(0xc002994588, {0xc00034c420, 0x7, 0x442d26?})
	pkg/sentry/syscalls/linux/sys_poll.go:94 +0xd2 fp=0xc0015d5140 sp=0xc0015d50d0 pc=0x1217852
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.pollBlock.deferwrap1()
	pkg/sentry/syscalls/linux/sys_poll.go:116 +0x5e fp=0xc0015d5190 sp=0xc0015d5140 pc=0x12185fe
panic({0x1c93940?, 0x2d7a1d0?})
	GOROOT/src/runtime/panic.go:792 +0x132 fp=0xc0015d5240 sp=0xc0015d5190 pc=0x47d6f2
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:262
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:925 +0x359 fp=0xc0015d52a0 sp=0xc0015d5240 pc=0x4804b9
gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*DeviceFD).EventRegister(0xc00054da00, 0xc00034c4b8)
	pkg/sentry/fsimpl/fuse/dev.go:152 +0xba fp=0xc0015d5328 sp=0xc0015d52a0 pc=0x173f35a
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).EventRegister(...)
	pkg/sentry/vfs/file_description.go:612
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.initReadiness(0xc002994588, 0xc0023c0718, 0xc00034c4b0, 0xc0006a0850)
	pkg/sentry/syscalls/linux/sys_poll.go:80 +0x1f6 fp=0xc0015d5400 sp=0xc0015d5328 pc=0x1216ed6
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.pollBlock(0xc002994588, {0xc0023c0700, 0x7, 0x0?}, 0x895440)
	pkg/sentry/syscalls/linux/sys_poll.go:119 +0x277 fp=0xc0015d5550 sp=0xc0015d5400 pc=0x1218057
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.doPoll(0xc002994588, 0x200000000200, 0x7, 0x895440)
	pkg/sentry/syscalls/linux/sys_poll.go:194 +0x133 fp=0xc0015d55f8 sp=0xc0015d5550 pc=0x12188f3
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.poll(0xc002994588, 0x200000000200, 0x7, 0x895440)
	pkg/sentry/syscalls/linux/sys_poll.go:415 +0x65 fp=0xc0015d5680 sp=0xc0015d55f8 pc=0x121a2c5
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Poll(0xc002994588, 0xca?, {{0x200000000200}, {0x7}, {0x9}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_poll.go:433 +0x3c fp=0xc0015d56c8 sp=0xc0015d5680 pc=0x121a55c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc002994588, 0x7, {{0x200000000200}, {0x7}, {0x9}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:143 +0x94c fp=0xc0015d5960 sp=0xc0015d56c8 pc=0xf7fbec
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc002994588, 0x7, {{0x200000000200}, {0x7}, {0x9}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:323 +0x72 fp=0xc0015d5a08 sp=0xc0015d5960 pc=0xf819d2
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc002994588, 0x7, {{0x200000000200}, {0x7}, {0x9}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:283 +0x94 fp=0xc0015d5a78 sp=0xc0015d5a08 pc=0xf813f4
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc002994588)
	pkg/sentry/kernel/task_syscall.go:258 +0x490 fp=0xc0015d5b98 sp=0xc0015d5a78 pc=0xf80fb0
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc002994588?, 0xc002994588)
	pkg/sentry/kernel/task_run.go:269 +0x1ec9 fp=0xc0015d5e70 sp=0xc0015d5b98 pc=0xf6d949
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc002994588, 0x38d)
	pkg/sentry/kernel/task_run.go:97 +0x4ca fp=0xc0015d5fb0 sp=0xc0015d5e70 pc=0xf6b0ca
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:416 +0x45 fp=0xc0015d5fe0 sp=0xc0015d5fb0 pc=0xf7daa5
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc0015d5fe8 sp=0xc0015d5fe0 pc=0x486aa1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 3066
	pkg/sentry/kernel/task_start.go:416 +0x15c