linux-next: build warning after merge of the akpm-current tree

[Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>]

Hi Andrew,

After merging the akpm-current tree, today's linux-next build (arm
multi_v7_defconfig) produced this warning:

mm/oom_kill.c: In function '__oom_reap_task':
mm/oom_kill.c:537:2: warning: 'mm' may be used uninitialized in this function [-Wmaybe-uninitialized]
  mmput_async(mm);
  ^

Introduced by commit

  df1e2f56632d ("oom_reaper: close race with exiting task")

This is real - the first "goto unlock_oom" is before "mm" has been
assigned.

-- 
Cheers,
Stephen Rothwell
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