panic: runtime error: invalid memory address or nil pointer dereference panic: nested locking: kernfs.filesystemRWMutex: goroutine 9602 [running]: gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*filesystemRWMutex).Lock(0xc00034aaf0) bazel-out/k8-fastbuild-ST-3dcbe13c9b87/bin/pkg/sentry/fsimpl/kernfs/filesystem_mutex.go:31 +0x45 gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Dentry).DecRef(0xc000e93710, {0x84d3c0, 0xc0014a5500}) pkg/sentry/fsimpl/kernfs/kernfs.go:294 +0xdc gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).processDeferredDecRefs(0xc00034aaa0, {0x84d3c0?, 0xc0014a5500}) pkg/sentry/fsimpl/kernfs/kernfs.go:181 +0x1e5 panic({0x322f40, 0x2800340}) 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(...) pkg/sentry/fsimpl/proc/task_files.go:1276 gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*namespaceSymlink).Getlink(0xc0012bab00, {0x84d3c0, 0xc0014a5500}, 0xc00026de00) pkg/sentry/fsimpl/proc/task_files.go:1306 +0x184 gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).stepExistingLocked(0x131f4b9?, {0x84d3c0, 0xc0014a5500}, 0xc0014c2900, 0xc000e93680) pkg/sentry/fsimpl/kernfs/filesystem.go:85 +0x5a3 gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).walkExistingLocked(0xc00034aaf0?, {0x84d3c0, 0xc0014a5500}, 0xc0014c2900) pkg/sentry/fsimpl/kernfs/filesystem.go:163 +0xdf gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).OpenAt(0xc00034aaa0, {0x84d3c0, 0xc0014a5500}, 0xc0014c2900, {0x8002, 0x0, 0x0}) pkg/sentry/fsimpl/kernfs/filesystem.go:486 +0x1c5 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).OpenAt(0xc0014812c0?, {0x84d3c0, 0xc0014a5500}, 0xc000021200?, 0xc001cbf370, 0xc001cbf268) pkg/sentry/vfs/vfs.go:460 +0x517 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.openat(0xc0014a5500, 0x1?, 0x1349ba5?, 0x2, 0x0) pkg/sentry/syscalls/linux/sys_file.go:112 +0x2b2 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Openat(0xc0014a5500?, 0x0?, {{0xffffff9c}, {0x7fbc94b7d030}, {0x2}, {0x0}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/sys_file.go:91 +0x45 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0014a5500, 0x101, {{0xffffff9c}, {0x7fbc94b7d030}, {0x2}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:142 +0x9c2 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0014a5500, 0x0?, {{0xffffff9c}, {0x7fbc94b7d030}, {0x2}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:322 +0x7d gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0014e3ad0?, 0xc0009113b0?, {{0xffffff9c}, {0x7fbc94b7d030}, {0x2}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:282 +0x8f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0014a5500) pkg/sentry/kernel/task_syscall.go:257 +0x4c5 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0014a5500?, 0xc0014a5500) pkg/sentry/kernel/task_run.go:269 +0x1d4b gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0014a5500, 0x295) pkg/sentry/kernel/task_run.go:98 +0x41b created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:389 +0x1ad