[patch 02/32] oom: kill all threads that share mm with killed task

[Chris Wright]

-stable review patch.  If anyone has any objections, please let us know.
---------------------

From: David Rientjes <rientjes@xxxxxxxxxx>

oom_kill_task() calls __oom_kill_task() to OOM kill a selected task.
When finding other threads that share an mm with that task, we need to
kill those individual threads and not the same one.

(Bug introduced by f2a2a7108aa0039ba7a5fe7a0d2ecef2219a7584)

Acked-by: William Irwin <bill.irwin@xxxxxxxxxx>
Acked-by: Christoph Lameter <clameter@xxxxxxxxxxxx>
Cc: Nick Piggin <npiggin@xxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxx>
Signed-off-by: David Rientjes <rientjes@xxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Chris Wright <chrisw@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
 mm/oom_kill.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-2.6.20.13.orig/mm/oom_kill.c
+++ linux-2.6.20.13/mm/oom_kill.c
@@ -335,7 +335,7 @@ static int oom_kill_task(struct task_str
 	 */
 	do_each_thread(g, q) {
 		if (q->mm == mm && q->tgid != p->tgid)
-			force_sig(SIGKILL, p);
+			force_sig(SIGKILL, q);
 	} while_each_thread(g, q);
 
 	return 0;

-- 
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