get_user() may fail, if so return -EFAULT.
Signed-off-by: Kulikov Vasiliy <segooon@xxxxxxxxx>
---
sound/isa/sb/emu8000_pcm.c | 6 ++++--
1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/sound/isa/sb/emu8000_pcm.c b/sound/isa/sb/emu8000_pcm.c
index ccedbfe..ae6fa9f 100644
--- a/sound/isa/sb/emu8000_pcm.c
+++ b/sound/isa/sb/emu8000_pcm.c
@@ -433,7 +433,8 @@ static int emu8k_transfer_block(struct snd_emu8000 *emu, int offset, unsigned sh
while (count > 0) {
unsigned short sval;
CHECK_SCHEDULER();
- get_user(sval, buf);
+ if (get_user(sval, buf))
+ return -EFAULT;
EMU8000_SMLD_WRITE(emu, sval);
buf++;
count--;
@@ -525,7 +526,8 @@ static int emu8k_pcm_copy(struct snd_pcm_substream *subs,
while (count-- > 0) {
unsigned short sval;
CHECK_SCHEDULER();
- get_user(sval, buf);
+ if (get_user(sval, buf))
+ return -EFAULT;
EMU8000_SMLD_WRITE(emu, sval);
buf++;
if (rec->voices > 1) {
--
1.7.0.4
--
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