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[PATCH] init_reap_node() initialization fix

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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 <[email protected]>
Cc: Andi Kleen <[email protected]>
Acked-by: Christoph Lameter <[email protected]>
Cc: Pekka Enberg <[email protected]>
Cc: Manfred Spraul <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Daniel Yeisley 2006-11-02 22:07:14 -08:00 • committed by Linus Torvalds
commit 7f6b8876c7
1 changed files with 1 additions and 1 deletions
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2
mm/slab.c
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@ -883,7 +883,7 @@ static void init_reap_node(int cpu)
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)