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audit: don't free_chunk() after fsnotify_add_mark() 

Don't do free_chunk() after fsnotify_add_mark().  That one does a delayed unref
via the destroy list and this results in use-after-free.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Acked-by: Eric Paris <eparis@redhat.com>
CC: stable@vger.kernel.org
This commit is contained in:
Miklos Szeredi 2012-08-15 12:55:22 +02:00
parent ddf343f635
commit 0fe33aae0e
1 changed files with 3 additions and 3 deletions
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6
kernel/audit_tree.c
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@ -259,7 +259,7 @@ static void untag_chunk(struct node *p)
fsnotify_duplicate_mark(&new->mark, entry);
if (fsnotify_add_mark(&new->mark, new->mark.group, new->mark.i.inode, NULL, 1)) {
free_chunk(new);
fsnotify_put_mark(&new->mark);
goto Fallback;
}
@ -322,7 +322,7 @@ static int create_chunk(struct inode *inode, struct audit_tree *tree)
entry = &chunk->mark;
if (fsnotify_add_mark(entry, audit_tree_group, inode, NULL, 0)) {
free_chunk(chunk);
fsnotify_put_mark(entry);
return -ENOSPC;
}
@ -396,7 +396,7 @@ static int tag_chunk(struct inode *inode, struct audit_tree *tree)
fsnotify_duplicate_mark(chunk_entry, old_entry);
if (fsnotify_add_mark(chunk_entry, chunk_entry->group, chunk_entry->i.inode, NULL, 1)) {
spin_unlock(&old_entry->lock);
free_chunk(chunk);
fsnotify_put_mark(chunk_entry);
fsnotify_put_mark(old_entry);
return -ENOSPC;
}