On Fri, Apr 06, 2018 at 02:53:30PM +1000, Stephen Rothwell wrote:
> Hi Andrew,
>
> After merging the akpm-current tree, today's linux-next build (x86_64
> allmodconfig) produced this warning:
>
> mm/memcontrol.c: In function 'memory_events_show':
> mm/memcontrol.c:5453:23: warning: array subscript is above array bounds [-Warray-bounds]
> atomic_long_read(&memcg->memory_events[OOM_KILL]));
> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Introduced by commit
>
> 725844c87a0d ("mm: memcg: make sure memory.events is uptodate when waking pollers")
Ah, silly, I missed that warning. The below fixes it.
Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
---
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 04ea2b104ee2..9bac6dc26e09 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -5199,8 +5199,7 @@ static int memory_events_show(struct seq_file *m, void *v)
atomic_long_read(&memcg->memory_events[MEMCG_MAX]));
seq_printf(m, "oom %lu\n",
atomic_long_read(&memcg->memory_events[MEMCG_OOM]));
- seq_printf(m, "oom_kill %lu\n",
- atomic_long_read(&memcg->memory_events[OOM_KILL]));
+ seq_printf(m, "oom_kill %lu\n", memcg_sum_events(memcg, OOM_KILL));
return 0;
}
--
To unsubscribe from this list: send the line "unsubscribe linux-next" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
