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authorTakashi Iwai <tiwai@suse.de>2006-10-18 19:09:46 +0200
committerJaroslav Kysela <perex@suse.cz>2006-10-22 10:51:13 +0200
commitdbedca39fe30db87b6401e4396f959c63d90082e (patch)
tree9fc6303fd7ac83d62360896534b4964bc4245c5e /sound
parent5b15c95f889c7bc43cb759c27211c597c0ad9f05 (diff)
downloadlinux-2.6.34-ux500-dbedca39fe30db87b6401e4396f959c63d90082e.tar.gz
[ALSA] Fix re-use of va_list
The va_list is designed to be used only once. The current code may pass va_list arguments multiple times and may cause Oops. Copy/release the arguments temporarily to avoid this problem. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Diffstat (limited to 'sound')
-rw-r--r--sound/core/info.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/sound/core/info.c b/sound/core/info.c
index e43662b33f1..0b4aab3225e 100644
--- a/sound/core/info.c
+++ b/sound/core/info.c
@@ -120,7 +120,10 @@ int snd_iprintf(struct snd_info_buffer *buffer, char *fmt,...)
len = buffer->len - buffer->size;
va_start(args, fmt);
for (;;) {
- res = vsnprintf(buffer->buffer + buffer->curr, len, fmt, args);
+ va_list ap;
+ va_copy(ap, args);
+ res = vsnprintf(buffer->buffer + buffer->curr, len, fmt, ap);
+ va_end(ap);
if (res < len)
break;
err = resize_info_buffer(buffer, buffer->len + PAGE_SIZE);