mm: avoid null-pointer deref in sync_mm_rss()

[safe/jmp/linux-2.6] / mm / memory.c

diff --git a/mm/memory.c b/mm/memory.c
index 1d2ea39..833952d 100644 (file)
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -125,13 +125,12 @@ core_initcall(init_zero_pfn);
 
 #if defined(SPLIT_RSS_COUNTING)
 
-void __sync_task_rss_stat(struct task_struct *task, struct mm_struct *mm)
+static void __sync_task_rss_stat(struct task_struct *task, struct mm_struct *mm)
 {
        int i;
 
        for (i = 0; i < NR_MM_COUNTERS; i++) {
                if (task->rss_stat.count[i]) {
-                       BUG_ON(!mm);
                        add_mm_counter(mm, i, task->rss_stat.count[i]);
                        task->rss_stat.count[i] = 0;
                }