From fdd8218d7d1bd0ccb9a3f4c58bf77773691a56cc Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 12 Oct 2016 09:21:40 +0300 Subject: [PATCH] ALSA: line6: fix a crash in line6_hwdep_write() 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 Reviewed-by: Takashi Sakamoto Signed-off-by: Takashi Iwai --- sound/usb/line6/driver.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/usb/line6/driver.c b/sound/usb/line6/driver.c index 14e587e70655..90009c0b3a92 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); -- GitLab