From: Bhavana Nagendra <bnagendr@redhat.com>
Subject: [RHEL5.1 PATCH] : Fix misconfigured K8 north bridge
Date: Fri, 20 Apr 2007 12:07:13 -0400
Bugzilla: 236759
Message-Id: <4628E531.5010200@redhat.com>
Changelog: [x86_64] Fix misconfigured K8 north bridge


BZ 236759

cache_k8_northbridges() overflows beyond allocation.  
cache_k8_northbridges() is storing config values to incorrect locations (in 
flush_words) and also its overflowing beyond the allocation, causing slab 
verification failures.

Upstream commit 6f29e35e2d4cdbc3e8785982314e54ec5df4ad37

Tested at AMD on several K8 platforms.




--- linux-2.6.18.x86_64/arch/x86_64/kernel/k8.c.orig	2007-04-20 11:20:19.000000000 -0400
+++ linux-2.6.18.x86_64/arch/x86_64/kernel/k8.c	2007-04-20 11:21:08.000000000 -0400
@@ -61,8 +61,8 @@ int cache_k8_northbridges(void)
 	dev = NULL;
 	i = 0;
 	while ((dev = next_k8_northbridge(dev)) != NULL) {
-		k8_northbridges[i++] = dev;
-		pci_read_config_dword(dev, 0x9c, &flush_words[i]);
+		k8_northbridges[i] = dev;
+		pci_read_config_dword(dev, 0x9c, &flush_words[i++]);
 	}
 	k8_northbridges[i] = NULL;
 	return 0;