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| author | Christoph Lameter <clameter@sgi.com> | 2006-04-03 20:11:57 +1000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-04-07 09:44:29 -0700 |
| commit | 781fe700a871a2fd4efd2e4beaba8c16e19d3e3b (patch) | |
| tree | 54f0663f32718265e0bdac97b0803fd85480d461 | |
| parent | 9f45b01aa6885323f18fe56e3fe19a6df5b7f1e9 (diff) | |
| download | lwn-781fe700a871a2fd4efd2e4beaba8c16e19d3e3b.tar.gz lwn-781fe700a871a2fd4efd2e4beaba8c16e19d3e3b.zip | |
[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 <clameter@sgi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/base/node.c | 2 |
1 files changed, 1 insertions, 1 deletions
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; |