Messages in this thread Patch in this message | | | Date | Tue, 4 Apr 2006 17:01:07 -0700 | From | gregkh@suse ... | Subject | [patch 21/26] Fix NULL pointer dereference in node_read_numastat() |
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From: Christoph Lameter <clameter@sgi.com>
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 <clameter@sgi.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- drivers/base/node.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- linux-2.6.16.1.orig/drivers/base/node.c +++ linux-2.6.16.1/drivers/base/node.c @@ -106,7 +106,7 @@ static ssize_t node_read_numastat(struct 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; -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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