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Merge branch 'for-linus' of git://git.infradead.org/users/eparis/notify 

* 'for-linus' of git://git.infradead.org/users/eparis/notify:
  inotify: don't leak user struct on inotify release
  inotify: race use after free/double free in inotify inode marks
  inotify: clean up the inotify_add_watch out path
  Inotify: undefined reference to `anon_inode_getfd'

Manual merge to remove duplicate "select ANON_INODES" from Kconfig file
wifi-calibration
Linus Torvalds 2010-05-14 11:49:42 -07:00
parent 97b2073ff0 b3b38d842f
commit 4fc4c3ce0d
2 changed files with 10 additions and 8 deletions
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2
fs/notify/inotify/inotify_fsnotify.c
View File

@ -28,6 +28,7 @@
#include <linux/path.h> /* struct path */
#include <linux/slab.h> /* kmem_* */
#include <linux/types.h>
#include <linux/sched.h>
#include "inotify.h"
@ -146,6 +147,7 @@ static void inotify_free_group_priv(struct fsnotify_group *group)
idr_for_each(&group->inotify_data.idr, idr_callback, group);
idr_remove_all(&group->inotify_data.idr);
idr_destroy(&group->inotify_data.idr);
free_uid(group->inotify_data.user);
}
void inotify_free_event_priv(struct fsnotify_event_private_data *fsn_event_priv)

16
fs/notify/inotify/inotify_user.c
View File

@ -546,21 +546,24 @@ retry:
if (unlikely(!idr_pre_get(&group->inotify_data.idr, GFP_KERNEL)))
goto out_err;
/* we are putting the mark on the idr, take a reference */
fsnotify_get_mark(&tmp_ientry->fsn_entry);
spin_lock(&group->inotify_data.idr_lock);
ret = idr_get_new_above(&group->inotify_data.idr, &tmp_ientry->fsn_entry,
group->inotify_data.last_wd+1,
&tmp_ientry->wd);
spin_unlock(&group->inotify_data.idr_lock);
if (ret) {
/* we didn't get on the idr, drop the idr reference */
fsnotify_put_mark(&tmp_ientry->fsn_entry);
/* idr was out of memory allocate and try again */
if (ret == -EAGAIN)
goto retry;
goto out_err;
}
/* we put the mark on the idr, take a reference */
fsnotify_get_mark(&tmp_ientry->fsn_entry);
/* we are on the idr, now get on the inode */
ret = fsnotify_add_mark(&tmp_ientry->fsn_entry, group, inode);
if (ret) {
@ -578,16 +581,13 @@ retry:
/* return the watch descriptor for this new entry */
ret = tmp_ientry->wd;
/* match the ref from fsnotify_init_markentry() */
fsnotify_put_mark(&tmp_ientry->fsn_entry);
/* if this mark added a new event update the group mask */
if (mask & ~group->mask)
fsnotify_recalc_group_mask(group);
out_err:
if (ret < 0)
kmem_cache_free(inotify_inode_mark_cachep, tmp_ientry);
/* match the ref from fsnotify_init_markentry() */
fsnotify_put_mark(&tmp_ientry->fsn_entry);
return ret;
}