Christian Brauner c9ec8607b4 fsnotify: let a filesystem refuse marks on its objects ... Don't let nullfs be watched. fanotify refuses mount and filesystem marks on SB_NOUSER superblocks but inode marks of inotify, fanotify and dnotify go through. The one inode of knullfs is the root of every kernel thread and the following patches make it reachable from userspace as the directory that stands in for an unmounted mount. A watch placed through one such directory would report the opens through all the others, across users. Add FS_DISALLOW_NOTIFY next to FS_DISALLOW_NOTIFY_PERM, refuse a mark on any object of such a filesystem in fsnotify_add_mark_list() where every backend ends up and set it for nullfs. There's nothing to watch on a permanently empty and immutable filesystem. Link: https://patch.msgid.link/20261002-work-mount-fixes-4-v1-16-dd44b89d44ce@kernel.org Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>		2026-10-04 12:31:40 +02:00
..
dnotify	fix a leak in fcntl_dirnotify()	2025-07-14 10:13:31 +02:00
fanotify	fsnotify: Fix stale object mask after concurrent mark updates	2026-08-05 11:50:45 +02:00
inotify	fsnotify: Fix stale object mask after concurrent mark updates	2026-08-05 11:50:45 +02:00
fdinfo.c	treewide: change inode->i_ino from unsigned long to u64	2026-03-06 14:31:28 +01:00
fdinfo.h
fsnotify.c	vfs-7.2-rc1.directory.delegations	2026-06-15 02:50:44 +05:30
fsnotify.h	fsnotify: Use connector list for destroying inode marks	2026-01-23 13:26:37 +01:00
group.c	treewide: Replace kmalloc with kmalloc_obj for non-scalar types	2026-02-21 01:02:28 -08:00
Kconfig	fs/notify: Remove "select SRCU"	2023-02-02 16:26:06 -08:00
Makefile
mark.c	fsnotify: let a filesystem refuse marks on its objects	2026-10-04 12:31:40 +02:00
notification.c	fsnotify: Pass group argument to free_event	2021-10-27 12:34:18 +02:00