Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-23 04:31:50 +00:00
Code Issues Packages Projects Releases Wiki Activity

[PATCH] fix NULL dereference in inotify_ignore

Browse Source 
Don't reassign to watch.  If idr_find() returns NULL, then
put_inotify_watch() will choke.

Signed-off-by: Amy Griffis <amy.griffis@hp.com>
Cc: John McCutchan <john@johnmccutchan.com>
Cc: Robert Love <rlove@rlove.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Amy Griffis 2006-05-20 15:00:07 -07:00 committed by Linus Torvalds
parent 66055a4e73
commit d66fd908ac
1 changed files with 1 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
fs/inotify.c
View File

@ -894,8 +894,7 @@ static int inotify_ignore(struct inotify_device *dev, s32 wd)
mutex_lock(&dev->mutex);
/* make sure that we did not race */
watch = idr_find(&dev->idr, wd);
if (likely(watch))
if (likely(idr_find(&dev->idr, wd) == watch))
remove_watch(watch, dev);
mutex_unlock(&dev->mutex);