From: Asim Kadav <kadav@cs.wisc.edu>
Date: Thu, 3 Jan 2013 17:47:26 +0000 (-0600)
Subject: sound: oss/pas2: Fix possible access out of array
X-Git-Tag: firefly_0821_release~3680^2~1162^2~26
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=dc30a436903ccf180b0313d3fc3f44278a1d44c8;p=firefly-linux-kernel-4.4.55.git

sound: oss/pas2: Fix possible access out of array

Added a fix for hardware dependence bug where a sound card failure
should not result in reading beyond array memory index.

Signed-off-by: Asim Kadav <kadav@cs.wisc.edu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/sound/oss/pas2_card.c b/sound/oss/pas2_card.c
index dabf8a871dcc..7004e24d209f 100644
--- a/sound/oss/pas2_card.c
+++ b/sound/oss/pas2_card.c
@@ -333,6 +333,11 @@ static void __init attach_pas_card(struct address_info *hw_config)
 		{
 			char            temp[100];
 
+			if (pas_model < 0 ||
+			    pas_model >= ARRAY_SIZE(pas_model_names)) {
+				printk(KERN_ERR "pas2 unrecognized model.\n");
+				return;
+			}
 			sprintf(temp,
 			    "%s rev %d", pas_model_names[(int) pas_model],
 				    pas_read(0x2789));