On Oct 12 2016 15:21, Dan Carpenter wrote:
The error checking here is messed up so we could end up dereferencing
-EFAULT.
Fixes: a16039cbf1a1 ('ALSA: line6: Add hwdep interface to access the POD control messages')
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Reviewed-by: Takashi Sakamoto <o-takashi@xxxxxxxxxxxxx>
diff --git a/sound/usb/line6/driver.c b/sound/usb/line6/driver.c
index 14e587e..90009c0 100644
--- a/sound/usb/line6/driver.c
+++ b/sound/usb/line6/driver.c
@@ -604,8 +604,8 @@ line6_hwdep_write(struct snd_hwdep *hwdep, const char __user *data, long count,
}
data_copy = memdup_user(data, count);
- if (IS_ERR(ERR_PTR))
- return -ENOMEM;
+ if (IS_ERR(data_copy))
+ return PTR_ERR(data_copy);
rv = line6_send_raw_message(line6, data_copy, count);
--
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