| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Tue, 7 Aug 2007 16:40:48 +0800
From: Eugene Teo <eugeneteo@...nel.sg>
To: Takashi Iwai <tiwai@...e.de>
Cc: linux-kernel@...r.kernel.org
Subject: [ALSA] seq: resource leak fix and various code cleanups
This patch fixes:
1) a resource leak (CID: 1817)
2) various code cleanups
Signed-off-by: Eugene Teo <eugeneteo@...nel.sg>
---
sound/core/seq/oss/seq_oss_init.c | 29 ++++++++++++++++++-----------
sound/core/seq/oss/seq_oss_writeq.c | 6 ++++--
2 files changed, 22 insertions(+), 13 deletions(-)
diff --git a/sound/core/seq/oss/seq_oss_init.c b/sound/core/seq/oss/seq_oss_init.c
index ca5a2ed..c9b95c3 100644
--- a/sound/core/seq/oss/seq_oss_init.c
+++ b/sound/core/seq/oss/seq_oss_init.c
@@ -176,7 +176,8 @@ snd_seq_oss_open(struct file *file, int level)
int i, rc;
struct seq_oss_devinfo *dp;
- if ((dp = kzalloc(sizeof(*dp), GFP_KERNEL)) == NULL) {
+ dp = kzalloc(sizeof(*dp), GFP_KERNEL);
+ if (dp == NULL) {
snd_printk(KERN_ERR "can't malloc device info\n");
return -ENOMEM;
}
@@ -188,8 +189,8 @@ snd_seq_oss_open(struct file *file, int level)
}
if (i >= SNDRV_SEQ_OSS_MAX_CLIENTS) {
snd_printk(KERN_ERR "too many applications\n");
- kfree(dp);
- return -ENOMEM;
+ rc = -ENOMEM;
+ goto _error;
}
dp->index = i;
@@ -211,14 +212,16 @@ snd_seq_oss_open(struct file *file, int level)
/* create port */
debug_printk(("create new port\n"));
- if ((rc = create_port(dp)) < 0) {
+ rc = create_port(dp);
+ if (rc < 0) {
snd_printk(KERN_ERR "can't create port\n");
goto _error;
}
/* allocate queue */
debug_printk(("allocate queue\n"));
- if ((rc = alloc_seq_queue(dp)) < 0)
+ rc = alloc_seq_queue(dp);
+ if (rc < 0)
goto _error;
/* set address */
@@ -235,7 +238,8 @@ snd_seq_oss_open(struct file *file, int level)
/* initialize read queue */
debug_printk(("initialize read queue\n"));
if (is_read_mode(dp->file_mode)) {
- if ((dp->readq = snd_seq_oss_readq_new(dp, maxqlen)) == NULL) {
+ dp->readq = snd_seq_oss_readq_new(dp, maxqlen);
+ if (dp->readq == NULL) {
rc = -ENOMEM;
goto _error;
}
@@ -253,7 +257,8 @@ snd_seq_oss_open(struct file *file, int level)
/* initialize timer */
debug_printk(("initialize timer\n"));
- if ((dp->timer = snd_seq_oss_timer_new(dp)) == NULL) {
+ dp->timer = snd_seq_oss_timer_new(dp);
+ if (dp->timer == NULL) {
snd_printk(KERN_ERR "can't alloc timer\n");
rc = -ENOMEM;
goto _error;
@@ -276,11 +281,13 @@ snd_seq_oss_open(struct file *file, int level)
return 0;
_error:
- snd_seq_oss_synth_cleanup(dp);
- snd_seq_oss_midi_cleanup(dp);
- i = dp->queue;
+ snd_seq_oss_writeq_delete(dp->writeq);
+ snd_seq_oss_readq_delete(dp->readq);
+ delete_seq_queue(dp->queue);
delete_port(dp);
- delete_seq_queue(i);
+ snd_seq_oss_midi_cleanup(dp);
+ snd_seq_oss_synth_cleanup(dp);
+ kfree(dp);
return rc;
}
diff --git a/sound/core/seq/oss/seq_oss_writeq.c b/sound/core/seq/oss/seq_oss_writeq.c
index 5c84956..2174248 100644
--- a/sound/core/seq/oss/seq_oss_writeq.c
+++ b/sound/core/seq/oss/seq_oss_writeq.c
@@ -63,8 +63,10 @@ snd_seq_oss_writeq_new(struct seq_oss_devinfo *dp, int maxlen)
void
snd_seq_oss_writeq_delete(struct seq_oss_writeq *q)
{
- snd_seq_oss_writeq_clear(q); /* to be sure */
- kfree(q);
+ if (q) {
+ snd_seq_oss_writeq_clear(q); /* to be sure */
+ kfree(q);
+ }
}
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists