Commit 6a2d5679 authored by Oleg Nesterov's avatar Oleg Nesterov Committed by Linus Torvalds

oom: kill the insufficient and no longer needed PT_TRACE_EXIT check

After the previous patch we can remove the PT_TRACE_EXIT check in
oom_scan_process_thread(), it was added to handle the case when the
coredumping was "frozen" by ptrace, but it doesn't really work.  If
nothing else, we would need to check all threads which could share the
same ->mm to make it more or less correct.
Signed-off-by: default avatarOleg Nesterov <oleg@redhat.com>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: David Rientjes <rientjes@google.com>
Acked-by: default avatarMichal Hocko <mhocko@suse.cz>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent d003f371
......@@ -281,14 +281,9 @@ enum oom_scan_t oom_scan_process_thread(struct task_struct *task,
if (oom_task_origin(task))
return OOM_SCAN_SELECT;
if (task_will_free_mem(task) && !force_kill) {
/*
* If this task is not being ptraced on exit, then wait for it
* to finish before killing some other task unnecessarily.
*/
if (!(task->group_leader->ptrace & PT_TRACE_EXIT))
return OOM_SCAN_ABORT;
}
if (task_will_free_mem(task) && !force_kill)
return OOM_SCAN_ABORT;
return OOM_SCAN_OK;
}
......
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