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authorKulikov Vasiliy <segooon@gmail.com>2010-07-28 20:41:17 +0400
committerTakashi Iwai <tiwai@suse.de>2010-07-29 12:25:06 +0200
commitb3390ceab95601afc12213c3ec5551d3bc7b638f (patch)
treea9f2523442885df6e35f357bb74b9695127c3a4d /sound/oss
parent5157cc8113db3de60ab6320965331c63bc77003c (diff)
downloadblackbird-op-linux-b3390ceab95601afc12213c3ec5551d3bc7b638f.tar.gz
blackbird-op-linux-b3390ceab95601afc12213c3ec5551d3bc7b638f.zip
sound: oss: midi_synth: check get_user() return value
get_user() may fail, if so return -EFAULT. Signed-off-by: Kulikov Vasiliy <segooon@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/oss')
-rw-r--r--sound/oss/midi_synth.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/sound/oss/midi_synth.c b/sound/oss/midi_synth.c
index 3bc7104c5379..3c09374ea5bf 100644
--- a/sound/oss/midi_synth.c
+++ b/sound/oss/midi_synth.c
@@ -523,7 +523,9 @@ midi_synth_load_patch(int dev, int format, const char __user *addr,
{
unsigned char data;
- get_user(*(unsigned char *) &data, (unsigned char __user *) &((addr)[hdr_size + i]));
+ if (get_user(data,
+ (unsigned char __user *)(addr + hdr_size + i)))
+ return -EFAULT;
eox_seen = (i > 0 && data & 0x80); /* End of sysex */
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