diff options
| author | Wenwen Wang <wenwen@cs.uga.edu> | 2019-08-08 00:15:21 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-08-16 10:13:46 +0200 |
| commit | 6520011297bdc0e58ec8fb0f24cb5c1c26a190bb (patch) | |
| tree | 7ec0266d4ff7b350de1e0ec19e887fcc86ae809b /sound | |
| parent | b5454dae67966de35763b45f08f4e2289e212c12 (diff) | |
sound: fix a memory leak bug
commit c7cd7c748a3250ca33509f9235efab9c803aca09 upstream.
In sound_insert_unit(), the controlling structure 's' is allocated through
kmalloc(). Then it is added to the sound driver list by invoking
__sound_insert_unit(). Later on, if __register_chrdev() fails, 's' is
removed from the list through __sound_remove_unit(). If 'index' is not less
than 0, -EBUSY is returned to indicate the error. However, 's' is not
deallocated on this execution path, leading to a memory leak bug.
To fix the above issue, free 's' before -EBUSY is returned.
Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/sound_core.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sound/sound_core.c b/sound/sound_core.c index 99b73c675743..20d4e2e1bacf 100644 --- a/sound/sound_core.c +++ b/sound/sound_core.c @@ -287,7 +287,8 @@ retry: goto retry; } spin_unlock(&sound_loader_lock); - return -EBUSY; + r = -EBUSY; + goto fail; } } |