On Wed, 4 Dec 2013, Oleg Nesterov wrote: > Change oom_kill.c to use for_each_thread() rather than the racy > while_each_thread() which can loop forever if we race with exit. > > Note also that most users were buggy even if while_each_thread() > was fine, the task can exit even _before_ rcu_read_lock(). > > Fortunately the new for_each_thread() only requires the stable > task_struct, so this change fixes both problems. > > Signed-off-by: Oleg Nesterov <[email protected]> > Reviewed-and-Tested-by: Sergey Dyasly <[email protected]> > Reviewed-by: Sameer Nanda <[email protected]>
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