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 9558 gp=0xc002d69880 m=45 mp=0xc0007d3808 [running]:
panic({0x1c93940?, 0x2d7a1d0?})
	GOROOT/src/runtime/panic.go:811 +0x168 fp=0xc000a97008 sp=0xc000a96f58 pc=0x47d728
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:262
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:925 +0x359 fp=0xc000a97068 sp=0xc000a97008 pc=0x4804b9
gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*DeviceFD).EventUnregister(0xc002790380, 0xc000d3a9e8)
	pkg/sentry/fsimpl/fuse/dev.go:160 +0xa4 fp=0xc000a970d0 sp=0xc000a97068 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(0xc001e8ec88, {0xc000d3a8c0, 0x9, 0x442d26?})
	pkg/sentry/syscalls/linux/sys_poll.go:94 +0xd2 fp=0xc000a97140 sp=0xc000a970d0 pc=0x1217852
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.pollBlock.deferwrap1()
	pkg/sentry/syscalls/linux/sys_poll.go:116 +0x5e fp=0xc000a97190 sp=0xc000a97140 pc=0x12185fe
panic({0x1c93940?, 0x2d7a1d0?})
	GOROOT/src/runtime/panic.go:792 +0x132 fp=0xc000a97240 sp=0xc000a97190 pc=0x47d6f2
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:262
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:925 +0x359 fp=0xc000a972a0 sp=0xc000a97240 pc=0x4804b9
gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*DeviceFD).EventRegister(0xc002790380, 0xc000d3a9e8)
	pkg/sentry/fsimpl/fuse/dev.go:152 +0xba fp=0xc000a97328 sp=0xc000a972a0 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(0xc001e8ec88, 0xc000c343f0, 0xc000d3a9e0, 0xc002c671f0)
	pkg/sentry/syscalls/linux/sys_poll.go:80 +0x1f6 fp=0xc000a97400 sp=0xc000a97328 pc=0x1216ed6
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.pollBlock(0xc001e8ec88, {0xc000c343c0, 0x9, 0x47e26e?}, 0x895440)
	pkg/sentry/syscalls/linux/sys_poll.go:119 +0x277 fp=0xc000a97550 sp=0xc000a97400 pc=0x1218057
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.doPoll(0xc001e8ec88, 0x20000000a880, 0x9, 0x895440)
	pkg/sentry/syscalls/linux/sys_poll.go:194 +0x133 fp=0xc000a975f8 sp=0xc000a97550 pc=0x12188f3
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.poll(0xc001e8ec88, 0x20000000a880, 0x9, 0x895440)
	pkg/sentry/syscalls/linux/sys_poll.go:415 +0x65 fp=0xc000a97680 sp=0xc000a975f8 pc=0x121a2c5
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Poll(0xc001e8ec88, 0xc001ae2d90?, {{0x20000000a880}, {0x9}, {0x9}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_poll.go:433 +0x3c fp=0xc000a976c8 sp=0xc000a97680 pc=0x121a55c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc001e8ec88, 0x7, {{0x20000000a880}, {0x9}, {0x9}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:143 +0x94c fp=0xc000a97960 sp=0xc000a976c8 pc=0xf7fbec
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc001e8ec88, 0x7, {{0x20000000a880}, {0x9}, {0x9}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:323 +0x72 fp=0xc000a97a08 sp=0xc000a97960 pc=0xf819d2
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc001e8ec88, 0x7, {{0x20000000a880}, {0x9}, {0x9}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:283 +0x94 fp=0xc000a97a78 sp=0xc000a97a08 pc=0xf813f4
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc001e8ec88)
	pkg/sentry/kernel/task_syscall.go:258 +0x490 fp=0xc000a97b98 sp=0xc000a97a78 pc=0xf80fb0
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc001e8ec88?, 0xc001e8ec88)
	pkg/sentry/kernel/task_run.go:269 +0x1ec9 fp=0xc000a97e70 sp=0xc000a97b98 pc=0xf6d949
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc001e8ec88, 0xaaf)
	pkg/sentry/kernel/task_run.go:97 +0x4ca fp=0xc000a97fb0 sp=0xc000a97e70 pc=0xf6b0ca
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:416 +0x45 fp=0xc000a97fe0 sp=0xc000a97fb0 pc=0xf7daa5
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000a97fe8 sp=0xc000a97fe0 pc=0x486aa1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 9557
	pkg/sentry/kernel/task_start.go:416 +0x15c