Re: OOM triggered with plenty of memory free

[Jonathan Woithe]

This post ties up a few loose ends in this thread which remained after my
21 March 2013 post.

 * The memory leak was not present in 2.6.36.

 * The patch to 2.6.35.11 at the end of this email (based on
   48e6b121605512d87f8da1ccd014313489c19630 from linux-stable) resolves the
   memory leak in 2.6.35.11.

This gives us a workable solution while we await fixes to current mainline
in the r8169 driver.  Once that's done we can revalidate our systems against
a more recent kernel and start shipping that.

Thanks to those who assisted with this issue.

Regards
  jonathan

--- a/net/netlink/af_netlink.c	2013-03-25 10:32:15.365781434 +1100
+++ b/net/netlink/af_netlink.c	2013-03-25 10:32:15.373782107 +1100
@@ -1387,6 +1387,8 @@ static int netlink_sendmsg(struct kiocb
 	err = netlink_unicast(sk, skb, dst_pid, msg->msg_flags&MSG_DONTWAIT);
 
 out:
+	scm_destroy(siocb->scm);
+	siocb->scm = NULL;
 	return err;
 }
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