From e3ba730702af370563f66cb610b71aa0ca67955e Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Thu, 22 Dec 2016 10:15:20 +0100 Subject: fsnotify: Remove fsnotify_duplicate_mark() There are only two calls sites of fsnotify_duplicate_mark(). Those are in kernel/audit_tree.c and both are bogus. Vfsmount pointer is unused for audit tree, inode pointer and group gets set in fsnotify_add_mark_locked() later anyway, mask and free_mark are already set in alloc_chunk(). In fact, calling fsnotify_duplicate_mark() is actively harmful because following fsnotify_add_mark_locked() will leak group reference by overwriting the group pointer. So just remove the two calls to fsnotify_duplicate_mark() and the function. Signed-off-by: Jan Kara [PM: line wrapping to fit in 80 chars] Signed-off-by: Paul Moore --- include/linux/fsnotify_backend.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include') diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index 7268ed076be8..ce77caa2bb10 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -324,8 +324,6 @@ extern void fsnotify_init_mark(struct fsnotify_mark *mark, void (*free_mark)(str extern struct fsnotify_mark *fsnotify_find_inode_mark(struct fsnotify_group *group, struct inode *inode); /* find (and take a reference) to a mark associated with group and vfsmount */ extern struct fsnotify_mark *fsnotify_find_vfsmount_mark(struct fsnotify_group *group, struct vfsmount *mnt); -/* copy the values from old into new */ -extern void fsnotify_duplicate_mark(struct fsnotify_mark *new, struct fsnotify_mark *old); /* set the ignored_mask of a mark */ extern void fsnotify_set_mark_ignored_mask_locked(struct fsnotify_mark *mark, __u32 mask); /* set the mask of a mark (might pin the object into memory */ -- cgit v1.2.3