From: Daniel Yeisley <dan.yeisley@unisys.com>
Date: Wed, 26 Mar 2008 21:37:41 +0000 (+0200)
Subject: slab: fix cache_cache bootstrap in kmem_cache_init()
X-Git-Tag: v2.6.24.5~54
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ce4039e002eab66502cd7d2cbcc6fcbdcbf828ee;p=thirdparty%2Fkernel%2Fstable.git

slab: fix cache_cache bootstrap in kmem_cache_init()

upstream commit: ec1f5eeeb5a79a0d48036de649a3498da42db565

Commit 556a169dab38b5100df6f4a45b655dddd3db94c1 ("slab: fix bootstrap on
memoryless node") introduced bootstrap-time cache_cache list3s for all nodes
but forgot that initkmem_list3 needs to be accessed by [somevalue + node]. This
patch fixes list_add() corruption in mm/slab.c seen on the ES7000.

Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Dan Yeisley <dan.yeisley@unisys.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
---

diff --git a/mm/slab.c b/mm/slab.c
index 79c3be02fa84e..8323e7dee4668 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -1484,7 +1484,7 @@ void __init kmem_cache_init(void)
 	list_add(&cache_cache.next, &cache_chain);
 	cache_cache.colour_off = cache_line_size();
 	cache_cache.array[smp_processor_id()] = &initarray_cache.cache;
-	cache_cache.nodelists[node] = &initkmem_list3[CACHE_CACHE];
+	cache_cache.nodelists[node] = &initkmem_list3[CACHE_CACHE + node];
 
 	/*
 	 * struct kmem_cache size depends on nr_node_ids, which
@@ -1605,7 +1605,7 @@ void __init kmem_cache_init(void)
 		int nid;
 
 		for_each_online_node(nid) {
-			init_list(&cache_cache, &initkmem_list3[CACHE_CACHE], nid);
+			init_list(&cache_cache, &initkmem_list3[CACHE_CACHE + nid], nid);
 
 			init_list(malloc_sizes[INDEX_AC].cs_cachep,
 				  &initkmem_list3[SIZE_AC + nid], nid);