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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>
This commit is contained in:
Kulikov Vasiliy 2010-07-28 20:41:17 +04:00 committed by Takashi Iwai
parent 5157cc8113
commit b3390ceab9
1 changed files with 3 additions and 1 deletions
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4
sound/oss/midi_synth.c
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@ -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 */