alsa/0027-ucm-fix-seg-fault-in-execute_cset.patch

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Diff

From 29880e8c66cfdc584e01aa549037f76b081b5019 Mon Sep 17 00:00:00 2001
From: Lu Guanqun <guanqun.lu@intel.com>
Date: Fri, 19 Aug 2011 16:05:25 +0800
Subject: [PATCH 1/3] ucm: fix seg fault in execute_cset()
When there's no space in 'cset', 'pos' gets NULL, dereferencing 'pos' gets a
seg fault. We need to be more robust.
Signed-off-by: Lu Guanqun <guanqun.lu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
src/ucm/main.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/src/ucm/main.c b/src/ucm/main.c
index 8e9a85d..9ecbe43 100644
--- a/src/ucm/main.c
+++ b/src/ucm/main.c
@@ -196,7 +196,8 @@ static int execute_cset(snd_ctl_t *ctl, char *cset)
goto __fail;
err = 0;
__fail:
- *pos = ' ';
+ if (pos != NULL)
+ *pos = ' ';
if (id != NULL)
free(id);
--
1.7.6.1