From: David Rientjes <rientjes@google.com>
Date: Fri, 27 Apr 2007 16:11:10 +0000 (-0400)
Subject: [PATCH] oom: kill all threads that share mm with killed task
X-Git-Tag: v2.6.20.14~32
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=afb7680b2c8ddadc4b09177dd85880f5ad6b4621;p=thirdparty%2Fkernel%2Fstable.git

[PATCH] oom: kill all threads that share mm with killed task

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@oracle.com>
Acked-by: Christoph Lameter <clameter@engr.sgi.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Andrew Morton <akpm@osdl.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 223add31d2ede..3791edfffeebe 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -335,7 +335,7 @@ static int oom_kill_task(struct task_struct *p)
 	 */
 	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;