panic: runtime error: invalid memory address or nil pointer dereference
	panic: nested locking: kernfs.filesystemRWMutex:
goroutine 3704 [running]:
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*filesystemRWMutex).Lock(0xc0004f9ef0)
	bazel-out/k8-fastbuild-ST-3dcbe13c9b87/bin/pkg/sentry/fsimpl/kernfs/filesystem_mutex.go:31 +0x58
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Dentry).DecRef(0xc000f9a990, {0x786da0, 0xc000d38a80})
	pkg/sentry/fsimpl/kernfs/kernfs.go:294 +0x13c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).processDeferredDecRefs(0xc0004f9ea0, {0x786da0?, 0xc000d38a80})
	pkg/sentry/fsimpl/kernfs/kernfs.go:181 +0x225
panic({0x322fc0, 0x28ac300})
	GOROOT/src/runtime/panic.go:890 +0x263
gvisor.dev/gvisor/pkg/sentry/inet.(*Namespace).GetInode(...)
	pkg/sentry/inet/namespace.go:70
gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*namespaceSymlink).getInode(0xc000ceab00, 0x12b611b?)
	pkg/sentry/fsimpl/proc/task_files.go:1276 +0x95
gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*namespaceSymlink).Getlink(0xc000ceab00, {0x786da0, 0xc000d38a80}, 0xc000759380)
	pkg/sentry/fsimpl/proc/task_files.go:1306 +0x127
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).stepExistingLocked(0xc0007e6900?, {0x786da0, 0xc000d38a80}, 0xc0007e6900, 0xc000f9a900)
	pkg/sentry/fsimpl/kernfs/filesystem.go:85 +0x6ba
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).walkExistingLocked(0xc0004f9ef0?, {0x786da0, 0xc000d38a80}, 0xc0007e6900)
	pkg/sentry/fsimpl/kernfs/filesystem.go:163 +0x11b
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).OpenAt(0xc0004f9ea0, {0x786da0, 0xc000d38a80}, 0xc0007e6900, {0x8002, 0x0, 0x0})
	pkg/sentry/fsimpl/kernfs/filesystem.go:486 +0x18d
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).OpenAt(0xc000fad9c0?, {0x786da0, 0xc000d38a80}, 0xc0007a6000?, 0xc000f1d428, 0xc000dfb2f8)
	pkg/sentry/vfs/vfs.go:460 +0x6bc
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.openat(0xc000d38a80, 0x28c81c4?, 0x1?, 0x2, 0x0)
	pkg/sentry/syscalls/linux/sys_file.go:112 +0x365
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Openat(0x0?, 0xc000f1d5d0?, {{0xffffff9c}, {0x7fca78960030}, {0x2}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:91 +0xcb
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000d38a80, 0x101, {{0xffffff9c}, {0x7fca78960030}, {0x2}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0xabf
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000d38a80, 0x1?, {{0xffffff9c}, {0x7fca78960030}, {0x2}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x8e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0011462d0?, 0xc000f1db37?, {{0xffffff9c}, {0x7fca78960030}, {0x2}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0xc5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000d38a80)
	pkg/sentry/kernel/task_syscall.go:257 +0x53b
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000d38a80?, 0xc000d38a80)
	pkg/sentry/kernel/task_run.go:269 +0x22b4
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000d38a80, 0x3b)
	pkg/sentry/kernel/task_run.go:98 +0x35b
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:389 +0x1da