panic: nested locking: kernfs.filesystemRWMutex: goroutine 1381446 [running]: gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*filesystemRWMutex).RLock(0xc000380230) bazel-out/k8-fastbuild-ST-3dcbe13c9b87/bin/pkg/sentry/fsimpl/kernfs/filesystem_mutex.go:59 +0x45 gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Dentry).InotifyWithParent(0xc002bf15f0, {0x830778, 0xc007280a80}, 0x8, 0x0?, 0x0?) pkg/sentry/fsimpl/kernfs/kernfs.go:517 +0xa8 gvisor.dev/gvisor/pkg/sentry/vfs.(*Dentry).InotifyWithParent(...) pkg/sentry/vfs/dentry.go:187 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef.func1() pkg/sentry/vfs/file_description.go:167 +0xdf gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescriptionRefs).DecRef(0xc001d02840, 0xc006f3a970) bazel-out/k8-fastbuild-ST-3dcbe13c9b87/bin/pkg/sentry/vfs/file_description_refs.go:131 +0x5f gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef(0xc001d02840, {0x830778, 0xc007280a80}) pkg/sentry/vfs/file_description.go:161 +0x6f gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).SafeDecRefFD(0xc000380b40, {0x830778, 0xc007280a80}, 0xc001d02840) pkg/sentry/fsimpl/kernfs/kernfs.go:153 +0xba gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.taskFDExists({0x830778, 0xc007280a80}, 0xc000380b40, 0x416d0001?, 0x0?) pkg/sentry/fsimpl/proc/task_fds.go:50 +0x69 gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*fdSymlink).Valid(0xc00697b200, {0x830778, 0xc007280a80}) pkg/sentry/fsimpl/proc/task_fds.go:246 +0x9a gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).revalidateChildLocked(0x303e80?, {0x830778, 0xc007280a80}, 0x1?, 0xc002bf18c0, {0xc0076ea90e, 0x1}, 0xc002bf1cb0) pkg/sentry/fsimpl/kernfs/filesystem.go:115 +0xaa gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).stepExistingLocked(0x1248e39?, {0x830778, 0xc007280a80}, 0xc00509b200, 0xc002bf18c0) pkg/sentry/fsimpl/kernfs/filesystem.go:75 +0x3ea gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).walkExistingLocked(0xc000380b90?, {0x830778, 0xc007280a80}, 0xc00509b200) pkg/sentry/fsimpl/kernfs/filesystem.go:160 +0xd8 gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).OpenAt(0xc000380b40, {0x830778, 0xc007280a80}, 0xc00509b200, {0x8000, 0x0, 0x0}) pkg/sentry/fsimpl/kernfs/filesystem.go:481 +0x1c5 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).OpenAt(0xc003f78800?, {0x830778, 0xc007280a80}, 0xc00037a900?, 0xc006f3b3f0, 0xc006f3b2e8) pkg/sentry/vfs/vfs.go:436 +0x4f3 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.openat(0xc007280a80, 0x1?, 0x12715e5?, 0x0, 0x0) pkg/sentry/syscalls/linux/sys_file.go:112 +0x2b1 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Openat(0xc007280a80?, {{0xffffff9c}, {0x7fd24f9fe0d0}, {0x0}, {0x0}, {0x0}, {0x7fd24f9fdf50}}) pkg/sentry/syscalls/linux/sys_file.go:91 +0x45 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc007280a80, 0x101, {{0xffffff9c}, {0x7fd24f9fe0d0}, {0x0}, {0x0}, {0x0}, {0x7fd24f9fdf50}}) pkg/sentry/kernel/task_syscall.go:142 +0x9b9 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc007280a80, 0x0?, {{0xffffff9c}, {0x7fd24f9fe0d0}, {0x0}, {0x0}, {0x0}, {0x7fd24f9fdf50}}) pkg/sentry/kernel/task_syscall.go:322 +0x7d gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc001548820?, 0xc000676c30?, {{0xffffff9c}, {0x7fd24f9fe0d0}, {0x0}, {0x0}, {0x0}, {0x7fd24f9fdf50}}) pkg/sentry/kernel/task_syscall.go:282 +0x8f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc007280a80) pkg/sentry/kernel/task_syscall.go:257 +0x4c5 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc007280a80?, 0xc007280a80) pkg/sentry/kernel/task_run.go:259 +0x1b76 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc007280a80, 0x3b37) pkg/sentry/kernel/task_run.go:94 +0x37b created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:377 +0x1ad