[PATCH] init_reap_node() initialization fix
- From: Daniel Yeisley <dan.yeisley@xxxxxxxxxx>
- Date: Tue, 31 Oct 2006 16:05:19 -0500
It looks like there is a bug in init_reap_node() in slab.c that can
cause multiple oops's on certain ES7000 configurations. The variable
reap_node is defined per cpu, but only initialized on a single CPU.
This causes an oops in next_reap_node() when __get_cpu_var(reap_node)
returns the wrong value. Fix is below.
Signed-off-by: Dan Yeisley <dan.yeisley@xxxxxxxxxx>
---
diff -Naur linux-2.6.19-rc3-org/mm/slab.c linux-2.6.19-rc3-work/mm/slab.c
--- linux-2.6.19-rc3-org/mm/slab.c 2006-10-23 19:02:02.000000000 -0400
+++ linux-2.6.19-rc3-work/mm/slab.c 2006-10-30 11:45:28.000000000 -0500
@@ -883,7 +883,7 @@
if (node == MAX_NUMNODES)
node = first_node(node_online_map);
- __get_cpu_var(reap_node) = node;
+ per_cpu(reap_node,cpu) = node;
}
static void next_reap_node(void)
-
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