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Subject[PATCH 145/173] sound: oss: midi_synth: check get_user() return value
2.6.27.59-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Kulikov Vasiliy <segooon@gmail.com>

commit b3390ceab95601afc12213c3ec5551d3bc7b638f upstream.

get_user() may fail, if so return -EFAULT.

Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
sound/oss/midi_synth.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

--- a/sound/oss/midi_synth.c
+++ b/sound/oss/midi_synth.c
@@ -519,7 +519,9 @@ midi_synth_load_patch(int dev, int forma
{
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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