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ucm: fix seg fault in execute_cset()

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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>
This commit is contained in:
Lu Guanqun 2011-08-19 16:05:25 +08:00 • committed by Takashi Iwai
parent 78dbc57b99
commit 29880e8c66
1 changed files with 2 additions and 1 deletions
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3
src/ucm/main.c
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@ -196,7 +196,8 @@ static int execute_cset(snd_ctl_t *ctl, char *cset)
goto __fail; goto __fail;
err = 0; err = 0;
__fail: __fail:
*pos = ' '; if (pos != NULL)
*pos = ' ';
if (id != NULL) if (id != NULL)
free(id); free(id);