From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael =?UTF-8?B?QsO8c2No?= Subject: Re: atl1c issues on 3.8.2 Date: Fri, 15 Mar 2013 20:44:57 +0100 Message-ID: <20130315204457.21d46b89@milhouse> References: <20130312161753.281681f2@milhouse> <1363103144.13690.12.camel@edumazet-glaptop> <20130312180942.4198e88e@milhouse> <1363154258.13690.40.camel@edumazet-glaptop> <1363271460.29475.14.camel@edumazet-glaptop> <20130314231746.44a93e4d@milhouse> <1363302362.29475.42.camel@edumazet-glaptop> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/jpu0GWy2JSL2+1yJCHx41_n"; protocol="application/pgp-signature" Cc: Pavel Emelyanov , Eric Dumazet , linux-netdev , "David S.Miller" , Mel Gorman To: Eric Dumazet Return-path: Received: from bues.ch ([80.190.117.144]:34884 "EHLO bues.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754248Ab3COTpT (ORCPT ); Fri, 15 Mar 2013 15:45:19 -0400 In-Reply-To: <1363302362.29475.42.camel@edumazet-glaptop> Sender: netdev-owner@vger.kernel.org List-ID: --Sig_/jpu0GWy2JSL2+1yJCHx41_n Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Fri, 15 Mar 2013 00:06:02 +0100 Eric Dumazet wrote: > You could try various DEBUGing stuff, like CONFIG_DEBUG_PAGEALLOC and > CONFIG_SLUB_DEBUG_ON This bug is so weird, so I did some double-checking. Just to minimize the mistakes on my side. I compiled a kernel without the revert of the original commit and without the skb fix you suggested. It turns out that I am only able to reproduce the issue, if the ath9k inter= face is up while testing the atl1c ethernet. And I also double-checked that reverting the original commit fixes the issu= e. No stalls with up or down ath9k then. So that confirms my previous results. I tried to enable pagealloc debug and slub debug on a kernel with the sugge= sted skb fix, but without the revert of the commit. Nothing special appeared in the logs. I'm currently building a kernel with almost all debugging opti= ons turned on. I will test that tomorrow. Thanks for your help. --=20 Michael --Sig_/jpu0GWy2JSL2+1yJCHx41_n Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAEBAgAGBQJRQ3o5AAoJEPUyvh2QjYsOaxAQAKKvu8YFF5MDG3NuM4CAb+cM 3xGIrmvLnRDuVyBbeVHA/TaJrGPqbaQFxgMagP4dqOpNRDyDHHgdEUyrl/DmMCxz YKl92pNwDl062jTSUalMndx9Rk/I0HaWVSudLKXtyE80zDcBRfn/xKUOlmwJDanP RyXjNLObyJ5fsXr8kNmF73m4rX9DBQ60XStNgoRT5A9dGv+68CXprCUctZtIAetP GRKKnZFEduCm9X/KnjC5hnaAff2MDIXjbbN9GcJsfc3I5UKJ/AuejKGaLJBXfnEk 6SES0u+qsZ/Dc9AJzvU3+ljxWgC0/oU+1zxgPu7uKRQVIW0SFB1xNFLSSmixp9sd 63YCXn+m03kBeC+sSXQOL4VlON0nKbhWvTnhdmIPmsuepbnJ8y4WSl/hajtTvGSZ YoFyXbX3cEPWVQLKOHwM4nW4aj1EoWO16r+AN3AGsc/18Xen8b/zaGieCVsF92Ug vn1ixtcSrIQn+JvYRGS4O2QsAql0l+l2hveyib5YmuCsF27Xox4WuMt2xPD1sc/6 6lhpL+NsYjNGqmYgTdie9gMKR17er3lqA4QxKeV24nuExiFM7qkNeH5TNS3AKG1E 61Uh/tcsnE9r3b08sCXuRYngGm3gUvijO7FTiNiiK9psMP8lo9e8QvF6soHYvOYU lHn8WTH0K6tHalNLgXAK =h8YN -----END PGP SIGNATURE----- --Sig_/jpu0GWy2JSL2+1yJCHx41_n--