In fanotify_mark_remove_from_mask() a mark is destroyed if only one of both
bitmasks (mask or ignored_mask) of a mark is cleared. However the other mask
may still be set and contain information that should not be lost. So only
destroy a mark if both masks are cleared.
Signed-off-by: Lino Sanfilippo <linosanfili...@gmx.de>
---
fs/notify/fanotify/fanotify_user.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/fs/notify/fanotify/fanotify_user.c
b/fs/notify/fanotify/fanotify_user.c
index c991616..ba31055 100644
--- a/fs/notify/fanotify/fanotify_user.c
+++ b/fs/notify/fanotify/fanotify_user.c
@@ -497,10 +497,9 @@ static __u32 fanotify_mark_remove_from_mask(struct
fsnotify_mark *fsn_mark,
oldmask = fsn_mark->ignored_mask;
fsnotify_set_mark_ignored_mask_locked(fsn_mark, (oldmask &
~mask));
}
+ *destroy = !(fsn_mark->mask | fsn_mark->ignored_mask);
spin_unlock(&fsn_mark->lock);
- *destroy = !(oldmask & ~mask);
-
return mask & oldmask;
}
--
1.9.1
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