[PATCH] mm/oom_kill.c: fix initial value of victim_points variable

[Адыгжы Ондар <ondar07@xxxxxxxxx>]

If the initial value of victim_points variable is equal to 0,
oom killer may choose a victim incorrectly.
For example, parent points > 0, 0 < child_points < parent points (chosen_points).
In this example, current oom killer chooses this child, not parent.

To apply the patch, in the root of a kernel tree use:

patch -p1 <this_fix.patch

Signed-off-by: Adygzhy Ondar <ondar07@xxxxxxxxx>

------------------------------------------------------------------------------------

--- linux/mm/oom_kill.c.orig 2016-11-24 15:03:43.711235386 +0300

+++ linux/mm/oom_kill.c 2016-11-24 15:04:00.851942474 +0300

@@ -812,7 +812,7 @@ static void oom_kill_process(struct oom_

  struct task_struct *child;

  struct task_struct *t;

  struct mm_struct *mm;

- unsigned int victim_points = 0;

+ unsigned int victim_points = points;

  static DEFINE_RATELIMIT_STATE(oom_rs, DEFAULT_RATELIMIT_INTERVAL,

       DEFAULT_RATELIMIT_BURST);

  bool can_oom_reap = true;