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| author | Eric Paris <eparis@redhat.com> | 2010-11-23 23:48:26 -0500 |
|---|---|---|
| committer | Eric Paris <eparis@redhat.com> | 2010-12-07 16:14:23 -0500 |
| commit | 26379198937fcc9bbe7be76be695d06df8334eaa (patch) | |
| tree | 47be9bc5b202f5f5e1a94a08966d362787bb06ea /fs/notify | |
| parent | a2ae4cc9a16e211c8a128ba10d22a85431f093ab (diff) | |
| download | linux-stable-26379198937fcc9bbe7be76be695d06df8334eaa.tar.gz linux-stable-26379198937fcc9bbe7be76be695d06df8334eaa.tar.bz2 linux-stable-26379198937fcc9bbe7be76be695d06df8334eaa.zip | |
fanotify: do not leak user reference on allocation failure
If fanotify_init is unable to allocate a new fsnotify group it will
return but will not drop its reference on the associated user struct.
Drop that reference on error.
Reported-by: Vegard Nossum <vegard.nossum@gmail.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
Diffstat (limited to 'fs/notify')
| -rw-r--r-- | fs/notify/fanotify/fanotify_user.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c index 01fffe62a2d4..ca54957b1f61 100644 --- a/fs/notify/fanotify/fanotify_user.c +++ b/fs/notify/fanotify/fanotify_user.c @@ -692,8 +692,10 @@ SYSCALL_DEFINE2(fanotify_init, unsigned int, flags, unsigned int, event_f_flags) /* fsnotify_alloc_group takes a ref. Dropped in fanotify_release */ group = fsnotify_alloc_group(&fanotify_fsnotify_ops); - if (IS_ERR(group)) + if (IS_ERR(group)) { + free_uid(user); return PTR_ERR(group); + } group->fanotify_data.user = user; atomic_inc(&user->fanotify_listeners); |