Re: [PATCH] mm: kmemleak: Ensure that the task stack is not freed during scanning
From: Hillf Danton <hidden>
Date: 2016-10-12 10:22:53
Also in:
lkml
quoted hunk ↗ jump to hunk
@@ -1453,8 +1453,11 @@ static void kmemleak_scan(void) read_lock(&tasklist_lock); do_each_thread(g, p) {
Take a look at this commit please.
1da4db0cd5 ("oom_kill: change oom_kill.c to use for_each_thread()")
- scan_block(task_stack_page(p), task_stack_page(p) +
- THREAD_SIZE, NULL);
+ void *stack = try_get_task_stack(p);
+ if (stack) {
+ scan_block(stack, stack + THREAD_SIZE, NULL);
+ put_task_stack(p);
+ }
} while_each_thread(g, p);
read_unlock(&tasklist_lock);
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