From: Wenwen Wang <wenwen@cs.uga.edu>
To: Wenwen Wang <wenwen@cs.uga.edu>
Cc: Clemens Ladisch <clemens@ladisch.de>,
Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
alsa-devel@alsa-project.org (moderated list:FIREWIRE AUDIO
DRIVERS), linux-kernel@vger.kernel.org (open list)
Subject: [PATCH] ALSA: firewire: fix a memory leak bug
Date: Thu, 8 Aug 2019 00:50:58 -0500 [thread overview]
Message-ID: <1565243458-2771-1-git-send-email-wenwen@cs.uga.edu> (raw)
In iso_packets_buffer_init(), 'b->packets' is allocated through
kmalloc_array(). Then, the aligned packet size is checked. If it is
larger than PAGE_SIZE, -EINVAL will be returned to indicate the error.
However, the allocated 'b->packets' is not deallocated on this path,
leading to a memory leak.
To fix the above issue, free 'b->packets' before returning the error code.
Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
---
sound/firewire/packets-buffer.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/firewire/packets-buffer.c b/sound/firewire/packets-buffer.c
index 0d35359..0ecafd0 100644
--- a/sound/firewire/packets-buffer.c
+++ b/sound/firewire/packets-buffer.c
@@ -37,7 +37,7 @@ int iso_packets_buffer_init(struct iso_packets_buffer *b, struct fw_unit *unit,
packets_per_page = PAGE_SIZE / packet_size;
if (WARN_ON(!packets_per_page)) {
err = -EINVAL;
- goto error;
+ goto err_packets;
}
pages = DIV_ROUND_UP(count, packets_per_page);
--
2.7.4
next reply other threads:[~2019-08-08 5:51 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-08 5:50 Wenwen Wang [this message]
2019-08-08 9:04 ` [alsa-devel] [PATCH] ALSA: firewire: fix a memory leak bug Takashi Sakamoto
2019-08-08 9:12 ` Takashi Iwai
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1565243458-2771-1-git-send-email-wenwen@cs.uga.edu \
--to=wenwen@cs.uga.edu \
--cc=alsa-devel@alsa-project.org \
--cc=clemens@ladisch.de \
--cc=linux-kernel@vger.kernel.org \
--cc=perex@perex.cz \
--cc=tiwai@suse.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).