mm, oom: fix uninitialized ret in task_will_free_mem()

    mm/oom_kill.c: In function `task_will_free_mem':
    mm/oom_kill.c:767: warning: `ret' may be used uninitialized in this function

If __task_will_free_mem() is never called inside the for_each_process()
loop, ret will not be initialized.

Fixes: 1af8bb43269563e4 ("mm, oom: fortify task_will_free_mem()")
Link: http://lkml.kernel.org/r/1470255599-24841-1-git-send-email-geert@linux-m68k.org
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 7d0a275df822e9e14c55e5d472cfc473ac3ae173..d53a9aa00977cbd0f81970e9e8a30b011cc73f31 100644 (file)
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -764,7 +764,7 @@ bool task_will_free_mem(struct task_struct *task)
 {
        struct mm_struct *mm = task->mm;
        struct task_struct *p;
-       bool ret;
+       bool ret = true;
 
        /*
         * Skip tasks without mm because it might have passed its exit_mm and