From 781fe700a871a2fd4efd2e4beaba8c16e19d3e3b Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Mon, 3 Apr 2006 20:11:57 +1000 Subject: [PATCH] Fix NULL pointer dereference in node_read_numastat() Fix NULL pointer dereference in node_read_numastat() zone_pcp() only returns valid values if the processor is online. Change node_read_numastat() to only scan online processors. Signed-off-by: Christoph Lameter Signed-off-by: Greg Kroah-Hartman --- drivers/base/node.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/base/node.c b/drivers/base/node.c index 16c513aa4d48..c80c3aeed004 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -106,7 +106,7 @@ static ssize_t node_read_numastat(struct sys_device * dev, char * buf) other_node = 0; for (i = 0; i < MAX_NR_ZONES; i++) { struct zone *z = &pg->node_zones[i]; - for (cpu = 0; cpu < NR_CPUS; cpu++) { + for_each_online_cpu(cpu) { struct per_cpu_pageset *ps = zone_pcp(z,cpu); numa_hit += ps->numa_hit; numa_miss += ps->numa_miss; -- cgit v1.2.3