panic: nested locking: kernfs.filesystemRWMutex: goroutine 228360 [running]: gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*filesystemRWMutex).RLock(0xc0004ea190) bazel-out/aarch64-fastbuild-ST-3dcbe13c9b87/bin/pkg/sentry/fsimpl/kernfs/filesystem_mutex.go:59 +0x44 gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Dentry).InotifyWithParent(0xc001688000, {0x8663f8, 0xc005983500}, 0x8, 0x0?, 0x28?) pkg/sentry/fsimpl/kernfs/kernfs.go:517 +0x78 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 +0xbc gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescriptionRefs).DecRef(0xc000bb2000, 0xc0007449a8) bazel-out/aarch64-fastbuild-ST-3dcbe13c9b87/bin/pkg/sentry/vfs/file_description_refs.go:131 +0x58 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef(0xc000bb2000, {0x8663f8, 0xc005983500}) pkg/sentry/vfs/file_description.go:161 +0x64 gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).SafeDecRefFD(0xc00018a000, {0x8663f8, 0xc005983500}, 0xc000bb2000) pkg/sentry/fsimpl/kernfs/kernfs.go:153 +0xb0 gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.taskFDExists({0x8663f8, 0xc005983500}, 0xc00018a000, 0x416d0001?, 0x0?) pkg/sentry/fsimpl/proc/task_fds.go:50 +0x60 gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*fdSymlink).Valid(0xc000cb0a80, {0x8663f8, 0xc005983500}) pkg/sentry/fsimpl/proc/task_fds.go:246 +0x80 gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).revalidateChildLocked(0x302820?, {0x8663f8, 0xc005983500}, 0x1?, 0xc009518360, {0xc006cbc915, 0x1}, 0xc009518750) pkg/sentry/fsimpl/kernfs/filesystem.go:115 +0x78 gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).stepExistingLocked(0xc000744c88?, {0x8663f8, 0xc005983500}, 0xc0008dfb00, 0xc009518360) pkg/sentry/fsimpl/kernfs/filesystem.go:75 +0x2cc gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).walkExistingLocked(0xc00018a050?, {0x8663f8, 0xc005983500}, 0xc0008dfb00) pkg/sentry/fsimpl/kernfs/filesystem.go:160 +0xb0 gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).OpenAt(0xc00018a000, {0x8663f8, 0xc005983500}, 0xc0008dfb00, {0x20000, 0x0, 0x0}) pkg/sentry/fsimpl/kernfs/filesystem.go:481 +0x130 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).OpenAt(0xc007121300?, {0x8663f8, 0xc005983500}, 0xf?, 0xc0007453e8, 0xc0007452e0) pkg/sentry/vfs/vfs.go:436 +0x3a8 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.openat(0xc005983500, 0x1?, 0xc0007454b8?, 0x0, 0x0) pkg/sentry/syscalls/linux/sys_file.go:112 +0x1ac gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Openat(0xc0001c9190?, {{0xffffffffffffff9c}, {0xfa18ebeffb10}, {0x0}, {0x0}, {0x0}, {0x5510000000005440}}) pkg/sentry/syscalls/linux/sys_file.go:91 +0x40 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc005983500, 0x38, {{0xffffffffffffff9c}, {0xfa18ebeffb10}, {0x0}, {0x0}, {0x0}, {0x5510000000005440}}) pkg/sentry/kernel/task_syscall.go:142 +0x6d8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc005983500, 0x122fd4c?, {{0xffffffffffffff9c}, {0xfa18ebeffb10}, {0x0}, {0x0}, {0x0}, {0x5510000000005440}}) pkg/sentry/kernel/task_syscall.go:322 +0x54 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000745b58?, 0x1298118?, {{0xffffffffffffff9c}, {0xfa18ebeffb10}, {0x0}, {0x0}, {0x0}, {0x5510000000005440}}) pkg/sentry/kernel/task_syscall.go:282 +0x7c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc005983500) pkg/sentry/kernel/task_syscall.go:257 +0x3c0 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc005983500?, 0xc005983500) pkg/sentry/kernel/task_run.go:259 +0x1320 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc005983500, 0x924d) pkg/sentry/kernel/task_run.go:94 +0x2bc created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:377 +0x184