[ALSA] emu10k1 - Fix over-sized kmalloc for TLV

Reported by Al Viro:
In copy_tlv(), the size of kmalloc is wrongly calculated.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

diff --git a/sound/pci/emu10k1/emufx.c b/sound/pci/emu10k1/emufx.c
index c35d9e1..354a892 100644 (file)
--- a/sound/pci/emu10k1/emufx.c
+++ b/sound/pci/emu10k1/emufx.c
@@ -665,7 +665,7 @@ static unsigned int *copy_tlv(const unsigned int __user *_tlv)
                return NULL;
        if (data[1] >= MAX_TLV_SIZE)
                return NULL;
-       tlv = kmalloc(data[1] * 4 + sizeof(data), GFP_KERNEL);
+       tlv = kmalloc(data[1] + sizeof(data), GFP_KERNEL);
        if (!tlv)
                return NULL;
        memcpy(tlv, data, sizeof(data));