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| author | ZhangXiaoxu <zhangxiaoxu5@huawei.com> | 2019-03-02 02:17:32 +0100 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2019-03-11 10:13:17 +0100 |
| commit | 62c9d2674b31d4c8a674bee86b7edc6da2803aea (patch) | |
| tree | 749addcfc56de7c36293ec2df114724d73274925 /fs/notify | |
| parent | Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/ke... (diff) | |
| download | linux-62c9d2674b31d4c8a674bee86b7edc6da2803aea.tar.xz linux-62c9d2674b31d4c8a674bee86b7edc6da2803aea.zip | |
inotify: Fix fsnotify_mark refcount leak in inotify_update_existing_watch()
Commit 4d97f7d53da7dc83 ("inotify: Add flag IN_MASK_CREATE for
inotify_add_watch()") forgot to call fsnotify_put_mark() with
IN_MASK_CREATE after fsnotify_find_mark()
Fixes: 4d97f7d53da7dc83 ("inotify: Add flag IN_MASK_CREATE for inotify_add_watch()")
Signed-off-by: ZhangXiaoxu <zhangxiaoxu5@huawei.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/notify')
| -rw-r--r-- | fs/notify/inotify/inotify_user.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c index e2901fbb9f76..7b53598c8804 100644 --- a/fs/notify/inotify/inotify_user.c +++ b/fs/notify/inotify/inotify_user.c @@ -519,8 +519,10 @@ static int inotify_update_existing_watch(struct fsnotify_group *group, fsn_mark = fsnotify_find_mark(&inode->i_fsnotify_marks, group); if (!fsn_mark) return -ENOENT; - else if (create) - return -EEXIST; + else if (create) { + ret = -EEXIST; + goto out; + } i_mark = container_of(fsn_mark, struct inotify_inode_mark, fsn_mark); @@ -548,6 +550,7 @@ static int inotify_update_existing_watch(struct fsnotify_group *group, /* return the wd */ ret = i_mark->wd; +out: /* match the get from fsnotify_find_mark() */ fsnotify_put_mark(fsn_mark); |