From: Eugene Teo <eugene.teo@eugeneteo.net>
To: linux-kernel@vger.kernel.org
Cc: Jaroslav Kysela <perex@suse.cz>
Subject: Fix gus_pcm dereference before NULL
Date: Thu, 16 Mar 2006 10:00:07 +0800 [thread overview]
Message-ID: <20060316020007.GA20734@eugeneteo.net> (raw)
substream is dereferenced before checking for NULL.
Coverity bug #861
Signed-off-by: Eugene Teo <eugene.teo@eugeneteo.net>
--- linux-2.6/sound/isa/gus/gus_pcm.c~ 2006-03-15 10:05:45.000000000 +0800
+++ linux-2.6/sound/isa/gus/gus_pcm.c 2006-03-16 09:51:43.000000000 +0800
@@ -103,8 +103,8 @@
static void snd_gf1_pcm_trigger_up(struct snd_pcm_substream *substream)
{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct gus_pcm_private *pcmp = runtime->private_data;
+ struct snd_pcm_runtime *runtime;
+ struct gus_pcm_private *pcmp;
struct snd_gus_card * gus = pcmp->gus;
unsigned long flags;
unsigned char voice_ctrl, ramp_ctrl;
@@ -114,8 +114,10 @@
unsigned char pan;
unsigned int voice;
- if (substream == NULL)
+ if (substream == NULL || substream->runtime == NULL)
return;
+ runtime = substream->runtime;
+ pcmp = runtime->private_data;
spin_lock_irqsave(&pcmp->lock, flags);
if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
spin_unlock_irqrestore(&pcmp->lock, flags);
--
1024D/A6D12F80 print D51D 2633 8DAC 04DB 7265 9BB8 5883 6DAA A6D1 2F80
main(i) { putchar(182623909 >> (i-1) * 5&31|!!(i<7)<<6) && main(++i); }
next reply other threads:[~2006-03-16 2:01 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-16 2:00 Eugene Teo [this message]
2006-03-16 5:24 ` Randy.Dunlap
2006-03-16 19:46 ` Jan Engelhardt
2006-03-16 11:00 ` Takashi Iwai
2006-03-16 11:53 ` Eugene Teo
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=20060316020007.GA20734@eugeneteo.net \
--to=eugene.teo@eugeneteo.net \
--cc=linux-kernel@vger.kernel.org \
--cc=perex@suse.cz \
/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
all inboxes | Powered by JetHome®