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=0x1076433]

goroutine 127240 gp=0xc001563a40 m=48 mp=0xc000d2d808 [running]:
panic({0x136c420?, 0x2542d60?})
	GOROOT/src/runtime/panic.go:811 +0x168 fp=0xc0026a7590 sp=0xc0026a74e0 pc=0x4788c8
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:262
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:925 +0x359 fp=0xc0026a75f0 sp=0xc0026a7590 pc=0x47b319
gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*DeviceFD).EventUnregister(0xc000402380, 0xc001d28008)
	pkg/sentry/fsimpl/fuse/dev.go:160 +0x73 fp=0xc0026a7638 sp=0xc0026a75f0 pc=0x1076433
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).EventUnregister(...)
	pkg/sentry/vfs/file_description.go:619
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.releaseState(0xc0035bb208, {0xc001d28000, 0x9, 0xc001563a40?})
	pkg/sentry/syscalls/linux/sys_poll.go:94 +0x8e fp=0xc0026a7670 sp=0xc0026a7638 pc=0xd1240e
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.pollBlock.deferwrap1()
	pkg/sentry/syscalls/linux/sys_poll.go:116 +0x2c fp=0xc0026a76a0 sp=0xc0026a7670 pc=0xd12b0c
panic({0x136c420?, 0x2542d60?})
	GOROOT/src/runtime/panic.go:792 +0x132 fp=0xc0026a7750 sp=0xc0026a76a0 pc=0x478892
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:262
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:925 +0x359 fp=0xc0026a77b0 sp=0xc0026a7750 pc=0x47b319
gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*DeviceFD).EventRegister(0xc000402380, 0xc001d28008)
	pkg/sentry/fsimpl/fuse/dev.go:152 +0x76 fp=0xc0026a7808 sp=0xc0026a77b0 pc=0x10762f6
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).EventRegister(...)
	pkg/sentry/vfs/file_description.go:612
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.initReadiness(0xc0035bb208, 0xc000b21e00, 0xc001d28000, 0xc0011d9420)
	pkg/sentry/syscalls/linux/sys_poll.go:80 +0x136 fp=0xc0026a7870 sp=0xc0026a7808 pc=0xd12196
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.pollBlock(0xc0035bb208, {0xc000b21e00, 0x9, 0xb44247?}, 0x989680)
	pkg/sentry/syscalls/linux/sys_poll.go:119 +0x1a6 fp=0xc0026a7958 sp=0xc0026a7870 pc=0xd12626
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.doPoll(0xc0035bb208, 0x2000000029c0, 0x9, 0x989680)
	pkg/sentry/syscalls/linux/sys_poll.go:194 +0xd5 fp=0xc0026a79d8 sp=0xc0026a7958 pc=0xd12d75
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Ppoll(0xc0035bb208, 0x49f2f9?, {{0x2000000029c0}, {0x9}, {0x200000002a40}, {0x200000002a80}, {0x8}, {0x0}})
	pkg/sentry/syscalls/linux/sys_poll.go:459 +0x15d fp=0xc0026a7a80 sp=0xc0026a79d8 pc=0xd1423d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0035bb208, 0x10f, {{0x2000000029c0}, {0x9}, {0x200000002a40}, {0x200000002a80}, {0x8}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:143 +0x809 fp=0xc0026a7cb0 sp=0xc0026a7a80 pc=0xb4a5c9
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0035bb208, 0x10f, {{0x2000000029c0}, {0x9}, {0x200000002a40}, {0x200000002a80}, {0x8}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:323 +0x4e fp=0xc0026a7d08 sp=0xc0026a7cb0 pc=0xb4bbae
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0035bb208, 0x10f, {{0x2000000029c0}, {0x9}, {0x200000002a40}, {0x200000002a80}, {0x8}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:283 +0x7d fp=0xc0026a7d58 sp=0xc0026a7d08 pc=0xb4b73d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc001c83860?)
	pkg/sentry/kernel/task_syscall.go:258 +0x349 fp=0xc0026a7e30 sp=0xc0026a7d58 pc=0xb4b409
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc002ebc870?, 0xc0035bb208)
	pkg/sentry/kernel/task_run.go:269 +0x12cb fp=0xc0026a7f38 sp=0xc0026a7e30 pc=0xb3ef2b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0035bb208, 0x7f0c)
	pkg/sentry/kernel/task_run.go:97 +0x27d fp=0xc0026a7fc0 sp=0xc0026a7f38 pc=0xb3d59d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:416 +0x25 fp=0xc0026a7fe0 sp=0xc0026a7fc0 pc=0xb48b45
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc0026a7fe8 sp=0xc0026a7fe0 pc=0x4816e1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 127269
	pkg/sentry/kernel/task_start.go:416 +0xd8