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ALSA: seq: Fix memory leak at error path in snd_seq_create_port()
author
Takashi Iwai
<tiwai@suse.de>
Mon, 17 Jul 2023 06:25:55 +0000
(08:25 +0200)
committer
Takashi Iwai
<tiwai@suse.de>
Mon, 17 Jul 2023 06:26:15 +0000
(08:26 +0200)
We forgot to release a newly allocated item at the error path in
snd_seq_create_port(). This patch fixes it.
Fixes:
7c3f0d3d3a11
("ALSA: seq: Check the conflicting port at port creation")
Reported-by: syzbot+cf8e7fa4eeec59b3d485@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/r/
00000000000098ed3a0600965f89
@google.com
Link:
https://lore.kernel.org/r/20230717062555.31592-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/core/seq/seq_ports.c
patch
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diff --git
a/sound/core/seq/seq_ports.c
b/sound/core/seq/seq_ports.c
index
9b80f82
..
f3f14ff
100644
(file)
--- a/
sound/core/seq/seq_ports.c
+++ b/
sound/core/seq/seq_ports.c
@@
-149,6
+149,7
@@
int snd_seq_create_port(struct snd_seq_client *client, int port,
write_lock_irq(&client->ports_lock);
list_for_each_entry(p, &client->ports_list_head, list) {
if (p->addr.port == port) {
+ kfree(new_port);
num = -EBUSY;
goto unlock;
}