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-rw-r--r--mm/kmemleak.c19
1 files changed, 12 insertions, 7 deletions
diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index 877de4fa0720..f9d9dc250428 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -1547,11 +1547,14 @@ static void kmemleak_scan(void)
unsigned long pfn;
for (pfn = start_pfn; pfn < end_pfn; pfn++) {
- struct page *page;
+ struct page *page = pfn_to_online_page(pfn);
- if (!pfn_valid(pfn))
+ if (!page)
+ continue;
+
+ /* only scan pages belonging to this node */
+ if (page_to_nid(page) != i)
continue;
- page = pfn_to_page(pfn);
/* only scan if page is in use */
if (page_count(page) == 0)
continue;
@@ -1647,7 +1650,7 @@ static void kmemleak_scan(void)
*/
static int kmemleak_scan_thread(void *arg)
{
- static int first_run = 1;
+ static int first_run = IS_ENABLED(CONFIG_DEBUG_KMEMLEAK_AUTO_SCAN);
pr_info("Automatic memory scanning thread started\n");
set_user_nice(current, 10);
@@ -2141,9 +2144,11 @@ static int __init kmemleak_late_init(void)
return -ENOMEM;
}
- mutex_lock(&scan_mutex);
- start_scan_thread();
- mutex_unlock(&scan_mutex);
+ if (IS_ENABLED(CONFIG_DEBUG_KMEMLEAK_AUTO_SCAN)) {
+ mutex_lock(&scan_mutex);
+ start_scan_thread();
+ mutex_unlock(&scan_mutex);
+ }
pr_info("Kernel memory leak detector initialized\n");