From: "Justin P. Mattock" <justinmattock@gmail.com>
To: "John W. Linville" <linville@tuxdriver.com>
Cc: netdev@vger.kernel.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
davem@davemloft.net, timo.teras@iki.fi
Subject: Re: BUG: unable to handle kernel NULL pointer dereference at 00000000000000a0
Date: Wed, 23 Jun 2010 10:00:58 -0700 [thread overview]
Message-ID: <4C223DCA.5090704@gmail.com> (raw)
In-Reply-To: <20100623141622.GC15205@tuxdriver.com>
o.k. the bisect is pointing to the below results..
(I tried git revert xxx but this commit is too big
so I'll(hopefully)manually revert it on the latest HEAD to
see if this is the actual problem im experiencing)
80c802f3073e84c956846e921e8a0b02dfa3755f is the first bad commit
commit 80c802f3073e84c956846e921e8a0b02dfa3755f
Author: Timo Teräs <timo.teras@iki.fi>
Date: Wed Apr 7 00:30:05 2010 +0000
xfrm: cache bundles instead of policies for outgoing flows
__xfrm_lookup() is called for each packet transmitted out of
system. The xfrm_find_bundle() does a linear search which can
kill system performance depending on how many bundles are
required per policy.
This modifies __xfrm_lookup() to store bundles directly in
the flow cache. If we did not get a hit, we just create a new
bundle instead of doing slow search. This means that we can now
get multiple xfrm_dst's for same flow (on per-cpu basis).
Signed-off-by: Timo Teras <timo.teras@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
:040000 040000 d8e60f5fa4c1329f450d9c7cdf98b34e6a177f22
9f576e68e5bf4ce357d7f0305aee5f410250dfe2 M include
:040000 040000 f2876df688ee36907af7b4123eea96592faaed3e
a3f6f6f94f0309106856cd99b38ec90b024eb016 M net
Justin P. Mattock
next prev parent reply other threads:[~2010-06-23 17:08 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-22 23:16 BUG: unable to handle kernel NULL pointer dereference at 00000000000000a0 Justin Mattock
2010-06-22 23:16 ` Justin Mattock
2010-06-23 14:16 ` John W. Linville
2010-06-23 14:41 ` Justin P. Mattock
2010-06-23 17:00 ` Justin P. Mattock [this message]
2010-06-23 17:29 ` Eric Dumazet
2010-06-23 18:10 ` Timo Teräs
2010-06-23 18:20 ` Justin P. Mattock
2010-06-23 20:34 ` Timo Teräs
2010-06-23 21:44 ` Justin P. Mattock
2010-06-24 5:45 ` [PATCH] xfrm: check bundle policy existance before dereferencing it Timo Teräs
2010-06-24 5:45 ` Timo Teräs
2010-06-24 21:35 ` David Miller
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