From 3e85fd614c7b6bb7f33bb04a0dcb5a3bfca4c0fe Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Fri, 18 Dec 2009 09:27:24 +0100 Subject: sound: sgio2audio/pdaudiocf/usb-audio: initialize PCM buffer When allocating the PCM buffer, use vmalloc_user() instead of vmalloc(). Otherwise, it would be possible for applications to play the previous contents of the kernel memory to the speakers, or to read it directly if the buffer is exported to userspace. Signed-off-by: Clemens Ladisch Cc: Signed-off-by: Takashi Iwai --- sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'sound/pcmcia') diff --git a/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c b/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c index d057e6489643..5cfa608823f7 100644 --- a/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c +++ b/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c @@ -51,7 +51,7 @@ static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs, size_t s return 0; /* already enough large */ vfree(runtime->dma_area); } - runtime->dma_area = vmalloc_32(size); + runtime->dma_area = vmalloc_32_user(size); if (! runtime->dma_area) return -ENOMEM; runtime->dma_bytes = size; -- cgit v1.2.2