panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xd46a5c]

goroutine 1224240 [running]:
panic(0x1537740, 0x21cb350)
	GOROOT/src/runtime/panic.go:1064 +0x46d fp=0xc002c1d0d8 sp=0xc002c1d020 pc=0x43611d
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:212
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:695 +0x3da fp=0xc002c1d108 sp=0xc002c1d0d8 pc=0x44ec4a
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Kernel(...)
	pkg/sentry/kernel/task.go:636
gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*socketOpsCommon).Release(0xc002446500, 0x18db5e0, 0x21cc930)
	pkg/sentry/socket/netstack/netstack.go:507 +0x42c fp=0xc002c1d248 sp=0xc002c1d108 pc=0xd46a5c
gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*SocketOperations).Release(0xc002446500, 0x18db5e0, 0x21cc930)
	<autogenerated>:1 +0x58 fp=0xc002c1d270 sp=0xc002c1d248 pc=0xd73ef8
gvisor.dev/gvisor/pkg/sentry/fs.(*File).DecRef.func1(0x18db5e0, 0x21cc930)
	pkg/sentry/fs/file.go:152 +0x10d fp=0xc002c1d2e0 sp=0xc002c1d270 pc=0x83a09d
gvisor.dev/gvisor/pkg/refs.(*AtomicRefCount).DecRefWithDestructor(0xc00381d1e0, 0x18db5e0, 0x21cc930, 0xc002c1d350)
	pkg/refs/refcounter.go:467 +0x186 fp=0xc002c1d330 sp=0xc002c1d2e0 pc=0x60a7d6
gvisor.dev/gvisor/pkg/sentry/fs.(*File).DecRef(0xc00381d1e0, 0x18db5e0, 0x21cc930)
	pkg/sentry/fs/file.go:146 +0x85 fp=0xc002c1d380 sp=0xc002c1d330 pc=0x80ca95
gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).drop(0xc002e5c5b0, 0xc00381d1e0)
	pkg/sentry/kernel/fd_table.go:148 +0x1d7 fp=0xc002c1d418 sp=0xc002c1d380 pc=0xb47647
gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).setAll(0xc002e5c5b0, 0x5, 0xc0023d9e40, 0x0, 0xc00031ac00)
	pkg/sentry/kernel/fd_table_unsafe.go:153 +0x369 fp=0xc002c1d4c8 sp=0xc002c1d418 pc=0xb4a949
gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).newFDAt(0xc002e5c5b0, 0x18db7e0, 0xc002616a80, 0x5, 0xc0023d9e40, 0x0, 0xb25000, 0x0, 0x0)
	pkg/sentry/kernel/fd_table.go:443 +0x146 fp=0xc002c1d558 sp=0xc002c1d4c8 pc=0xb494a6
gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).NewFDAt(...)
	pkg/sentry/kernel/fd_table.go:417
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).NewFDAt(...)
	pkg/sentry/kernel/task.go:836
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Dup3(0xc002616a80, 0x9, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...)
	pkg/sentry/syscalls/linux/sys_file.go:855 +0x1a5 fp=0xc002c1d638 sp=0xc002c1d558 pc=0xc1f295
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Dup2(0xc002616a80, 0x9, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...)
	pkg/sentry/syscalls/linux/sys_file.go:836 +0x24b fp=0xc002c1d740 sp=0xc002c1d638 pc=0xc1f08b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc002616a80, 0x21, 0x9, 0x5, 0x0, 0x0, 0x0, 0x0, 0x340, 0x0, ...)
	pkg/sentry/kernel/task_syscall.go:103 +0x44e fp=0xc002c1d9e0 sp=0xc002c1d740 pc=0xba709e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc002616a80, 0x21, 0x9, 0x5, 0x0, 0x0, 0x0, 0x0, 0x407baa, 0xc002617357)
	pkg/sentry/kernel/task_syscall.go:238 +0xb5 fp=0xc002c1dac0 sp=0xc002c1d9e0 pc=0xba8755
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc002616a80, 0x21, 0x9, 0x5, 0x0, 0x0, 0x0, 0x0, 0x1135cb2, 0x2bb98b2)
	pkg/sentry/kernel/task_syscall.go:198 +0x10a fp=0xc002c1db70 sp=0xc002c1dac0 pc=0xba80ba
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc002616a80, 0x2, 0xc002616a80)
	pkg/sentry/kernel/task_syscall.go:173 +0x1e8 fp=0xc002c1dcb0 sp=0xc002c1db70 pc=0xba78a8
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc002616a80, 0x18adec0, 0x0)
	pkg/sentry/kernel/task_run.go:275 +0x11d9 fp=0xc002c1dee8 sp=0xc002c1dcb0 pc=0xb941e9
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc002616a80, 0xcfe2)
	pkg/sentry/kernel/task_run.go:93 +0x31d fp=0xc002c1dfd0 sp=0xc002c1dee8 pc=0xb923bd
runtime.goexit()
	src/runtime/asm_amd64.s:1373 +0x1 fp=0xc002c1dfd8 sp=0xc002c1dfd0 pc=0x46b961
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:318 +0x19e