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authorJan Kara <jack@suse.cz>2016-12-22 10:15:20 +0100
committerPaul Moore <paul@paul-moore.com>2016-12-23 16:40:32 -0500
commite3ba730702af370563f66cb610b71aa0ca67955e (patch)
tree6a7dd8a17c9fde8851366f785faa4d9ce6462fe2 /kernel
parent533c7b69c764ad5febb3e716899f43a75564fcab (diff)
downloadlinux-e3ba730702af370563f66cb610b71aa0ca67955e.tar.bz2
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 <jack@suse.cz> [PM: line wrapping to fit in 80 chars] Signed-off-by: Paul Moore <paul@paul-moore.com>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/audit_tree.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/audit_tree.c b/kernel/audit_tree.c
index 055f11b0a50f..b4b58400531f 100644
--- a/kernel/audit_tree.c
+++ b/kernel/audit_tree.c
@@ -258,8 +258,8 @@ static void untag_chunk(struct node *p)
if (!new)
goto Fallback;
- fsnotify_duplicate_mark(&new->mark, entry);
- if (fsnotify_add_mark(&new->mark, new->mark.group, new->mark.inode, NULL, 1)) {
+ if (fsnotify_add_mark(&new->mark,
+ entry->group, entry->inode, NULL, 1)) {
fsnotify_put_mark(&new->mark);
goto Fallback;
}
@@ -395,8 +395,8 @@ static int tag_chunk(struct inode *inode, struct audit_tree *tree)
return -ENOENT;
}
- fsnotify_duplicate_mark(chunk_entry, old_entry);
- if (fsnotify_add_mark(chunk_entry, chunk_entry->group, chunk_entry->inode, NULL, 1)) {
+ if (fsnotify_add_mark(chunk_entry,
+ old_entry->group, old_entry->inode, NULL, 1)) {
spin_unlock(&old_entry->lock);
fsnotify_put_mark(chunk_entry);
fsnotify_put_mark(old_entry);