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-rw-r--r--fs/inotify.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/fs/inotify.c b/fs/inotify.c
index 1f50302849c5..732ec4bd5774 100644
--- a/fs/inotify.c
+++ b/fs/inotify.c
@@ -848,7 +848,11 @@ static int inotify_release(struct inode *ignored, struct file *file)
inode = watch->inode;
mutex_lock(&inode->inotify_mutex);
mutex_lock(&dev->mutex);
- remove_watch_no_event(watch, dev);
+
+ /* make sure we didn't race with another list removal */
+ if (likely(idr_find(&dev->idr, watch->wd)))
+ remove_watch_no_event(watch, dev);
+
mutex_unlock(&dev->mutex);
mutex_unlock(&inode->inotify_mutex);
put_inotify_watch(watch);
@@ -890,8 +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);