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=0x18635f4]

goroutine 8519 gp=0xc0007a7dc0 m=63 mp=0xc000731808 [running]:
panic({0x1d5c4e0?, 0x2e3cd20?})
	GOROOT/src/runtime/panic.go:811 +0x168 fp=0xc001507038 sp=0xc001506f88 pc=0x47d728
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:262
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:925 +0x359 fp=0xc001507098 sp=0xc001507038 pc=0x4804b9
gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*DeviceFD).EventUnregister(0xc000b9c800, 0xc000c9df48)
	pkg/sentry/fsimpl/fuse/dev.go:160 +0xb4 fp=0xc001507100 sp=0xc001507098 pc=0x18635f4
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).EventUnregister(0xc000b9c800, 0xc000c9df48)
	pkg/sentry/vfs/file_description.go:619 +0x5e fp=0xc001507120 sp=0xc001507100 pc=0xb5875e
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.releaseState(0xc00077d208, {0xc000c9ddc0, 0x9, 0x442d26?})
	pkg/sentry/syscalls/linux/sys_poll.go:94 +0xe5 fp=0xc001507160 sp=0xc001507120 pc=0x12ed345
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.pollBlock.deferwrap1()
	pkg/sentry/syscalls/linux/sys_poll.go:116 +0x5e fp=0xc0015071b0 sp=0xc001507160 pc=0x12edcfe
panic({0x1d5c4e0?, 0x2e3cd20?})
	GOROOT/src/runtime/panic.go:792 +0x132 fp=0xc001507260 sp=0xc0015071b0 pc=0x47d6f2
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:262
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:925 +0x359 fp=0xc0015072c0 sp=0xc001507260 pc=0x4804b9
gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*DeviceFD).EventRegister(0xc000b9c800, 0xc000c9df48)
	pkg/sentry/fsimpl/fuse/dev.go:152 +0xca fp=0xc001507348 sp=0xc0015072c0 pc=0x186342a
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).EventRegister(0xc000b9c800, 0xc000c9df48)
	pkg/sentry/vfs/file_description.go:612 +0x5e fp=0xc001507378 sp=0xc001507348 pc=0xb586be
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.initReadiness(0xc00077d208, 0xc000296680, 0xc000c9df40, 0xc00073ee00)
	pkg/sentry/syscalls/linux/sys_poll.go:80 +0x239 fp=0xc001507460 sp=0xc001507378 pc=0x12ece59
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.pollBlock(0xc00077d208, {0xc000296640, 0x9, 0x2f52a28?}, 0x1bc16d674ec80000)
	pkg/sentry/syscalls/linux/sys_poll.go:119 +0x286 fp=0xc0015075a0 sp=0xc001507460 pc=0x12ed646
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.doPoll(0xc00077d208, 0x200000000440, 0x9, 0x1bc16d674ec80000)
	pkg/sentry/syscalls/linux/sys_poll.go:194 +0x194 fp=0xc001507640 sp=0xc0015075a0 pc=0x12ee0d4
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Ppoll(0xc00077d208, 0x457b27?, {{0x200000000440}, {0x9}, {0x2000000004c0}, {0x200000000500}, {0x8}, {0x0}})
	pkg/sentry/syscalls/linux/sys_poll.go:459 +0x23b fp=0xc0015076e8 sp=0xc001507640 pc=0x12efefb
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00077d208, 0x10f, {{0x200000000440}, {0x9}, {0x2000000004c0}, {0x200000000500}, {0x8}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:143 +0xb90 fp=0xc001507998 sp=0xc0015076e8 pc=0x103da90
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00077d208, 0x10f, {{0x200000000440}, {0x9}, {0x2000000004c0}, {0x200000000500}, {0x8}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:323 +0x85 fp=0xc001507a40 sp=0xc001507998 pc=0x103fba5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc00077d208, 0x10f, {{0x200000000440}, {0x9}, {0x2000000004c0}, {0x200000000500}, {0x8}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:283 +0xc7 fp=0xc001507ab0 sp=0xc001507a40 pc=0x103f4e7
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00077d208)
	pkg/sentry/kernel/task_syscall.go:258 +0x53e fp=0xc001507bd0 sp=0xc001507ab0 pc=0x103f03e
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc00077d208?, 0xc00077d208)
	pkg/sentry/kernel/task_run.go:269 +0x220c fp=0xc001507e78 sp=0xc001507bd0 pc=0x102a04c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00077d208, 0x9a2)
	pkg/sentry/kernel/task_run.go:97 +0x402 fp=0xc001507fb0 sp=0xc001507e78 pc=0x1027402
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:416 +0x45 fp=0xc001507fe0 sp=0xc001507fb0 pc=0x103b3e5
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc001507fe8 sp=0xc001507fe0 pc=0x486aa1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 8539
	pkg/sentry/kernel/task_start.go:416 +0x17e