panic: nested locking: kernfs.filesystemRWMutex:
goroutine 18985 [running]:
gvisor.dev/gvisor/pkg/log.Stacks(0x0?)
	pkg/log/log.go:318 +0x8d
gvisor.dev/gvisor/pkg/sync/locking.AddGLock(0xc0001bf480, 0x0)
	pkg/sync/locking/lockdep.go:105 +0x4dd
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*filesystemRWMutex).RLock(0xc0001c4230)
	bazel-out/k8-fastbuild-ST-3dcbe13c9b87/bin/pkg/sentry/fsimpl/kernfs/filesystem_mutex.go:46 +0x3f
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Dentry).InotifyWithParent(0xc000e5e3f0, {0x1bd2150, 0xc001502000}, 0x8, 0x0?, 0x1?)
	pkg/sentry/fsimpl/kernfs/kernfs.go:518 +0xa5
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 +0xd8
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescriptionRefs).DecRef(0xc0048c4180, 0xc00489e910)
	bazel-out/k8-fastbuild-ST-3dcbe13c9b87/bin/pkg/sentry/vfs/file_description_refs.go:131 +0x5f
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef(0xc0048c4180, {0x1bd2150, 0xc001502000})
	pkg/sentry/vfs/file_description.go:161 +0x6f
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).SafeDecRefFD(0xc0001c45a0, {0x1bd2150, 0xc001502000}, 0xc0048c4180)
	pkg/sentry/fsimpl/kernfs/kernfs.go:153 +0xb3
gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.taskFDExists({0x1bd2150, 0xc001502000}, 0xc0001c45a0, 0x20?, 0x470f37?)
	pkg/sentry/fsimpl/proc/task_fds.go:50 +0x69
gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*fdDirInode).Lookup(0xc0025eac00, {0x1bd2150, 0xc001502000}, {0xc004360315, 0x1})
	pkg/sentry/fsimpl/proc/task_fds.go:149 +0xe5
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).revalidateChildLocked(0x16e0520?, {0x1bd2150, 0xc001502000}, 0x1?, 0xc00449f950, {0xc004360315, 0x1}, 0x0)
	pkg/sentry/fsimpl/kernfs/filesystem.go:134 +0x1b5
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).stepExistingLocked(0xc00489ec20?, {0x1bd2150, 0xc001502000}, 0xc0006ee480, 0xc00449f950, 0x1)
	pkg/sentry/fsimpl/kernfs/filesystem.go:76 +0x2ae
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).walkExistingLocked(0xc0001c45f0?, {0x1bd2150, 0xc001502000}, 0xc0006ee480)
	pkg/sentry/fsimpl/kernfs/filesystem.go:166 +0xd9
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).OpenAt(0xc0001c45a0, {0x1bd2150, 0xc001502000}, 0xc0006ee480, {0x0, 0x0, 0x0})
	pkg/sentry/fsimpl/kernfs/filesystem.go:494 +0x1cd
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).OpenAt(0xc00439ab90?, {0x1bd2150, 0xc001502000}, 0xc0003ec400?, 0xc00489f3f8, 0xc00489f2f0)
	pkg/sentry/vfs/vfs.go:428 +0x4ef
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.openat(0xc001502000, 0x1?, 0x470f65?, 0x0, 0x0)
	pkg/sentry/syscalls/linux/vfs2/filesystem.go:179 +0x2aa
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.Openat(0xc001aa7578?, {{0xffffff9c}, {0x7f1844bfc290}, {0x0}, {0x0}, {0x0}, {0x7f1844bfc120}})
	pkg/sentry/syscalls/linux/vfs2/filesystem.go:158 +0x45
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc001502000, 0x101, {{0xffffff9c}, {0x7f1844bfc290}, {0x0}, {0x0}, {0x0}, {0x7f1844bfc120}})
	pkg/sentry/kernel/task_syscall.go:142 +0x9b8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc001502000, 0x0?, {{0xffffff9c}, {0x7f1844bfc290}, {0x0}, {0x0}, {0x0}, {0x7f1844bfc120}})
	pkg/sentry/kernel/task_syscall.go:322 +0x7d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc003cf7520?, 0xc0027525a0?, {{0xffffff9c}, {0x7f1844bfc290}, {0x0}, {0x0}, {0x0}, {0x7f1844bfc120}})
	pkg/sentry/kernel/task_syscall.go:282 +0x8f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc001502000)
	pkg/sentry/kernel/task_syscall.go:257 +0x496
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc001502000?, 0xc001502000)
	pkg/sentry/kernel/task_run.go:253 +0x18f9
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc001502000, 0x398)
	pkg/sentry/kernel/task_run.go:94 +0x354
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:380 +0x1a8