Return-path: Received: from xc.sipsolutions.net ([83.246.72.84]:57594 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751132AbYIYE3n (ORCPT ); Thu, 25 Sep 2008 00:29:43 -0400 Subject: Re: Crash with 2.6.27-rc6 with iwlwifi From: Johannes Berg To: Ian Schram Cc: Marcel Holtmann , linux-wireless In-Reply-To: <48DAC681.9010305@telenet.be> References: (sfid-20080911_100535_000722_EE099914) <1222287287.4257.49.camel@johannes.berg> <48DAC681.9010305@telenet.be> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-FHdQTOAFlZ9d6ddXmk99" Date: Thu, 25 Sep 2008 06:28:51 +0200 Message-Id: <1222316931.10563.7.camel@johannes.berg> (sfid-20080925_062947_844100_429512F5) Mime-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: --=-FHdQTOAFlZ9d6ddXmk99 Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Thu, 2008-09-25 at 01:00 +0200, Ian Schram wrote: > > Incidentally, if this really is the same bug I have, you might want to > > remove the iwlagn module completely, even loading it once is a bad > > thing, it has started to corrupt things here entirely by making DMA go > > to random locations. >=20 > with the release of -rc7 i was starting to wonder what had happened to th= is bug, > i'm not affected by it(other hardware) but from what i gather it's a seri= ous problem? >=20 > i have always wondered what people affected by this find if they revert t= he > "memory allocation optimization" patch >=20 > http://git.kernel.org/?p=3Dlinux/kernel/git/torvalds/linux-2.6.git;a=3Dco= mmit;h=3Dda99c4b6c25964b90c79f19beccda208df1a865a >=20 > apologies if this is a too random stab in the dark, just sounds like we m= ight want to fix this > before .27. And since there seems to be no git bisects that pinpoint the = problem .. > i figured i might as well send this. I haven't really pondered bisecting since it happens for me with iwl5000 hardware which wasn't supported before... Because this bug was affecting my machine quite a bit I've now removed the wireless card from it for the time being. I still think it should be easy to reproduce by using a machine with a good amount of memory (I have 6.5G) and enabling CONFIG_SLUB_DEBUG, which seems to have at least some part in it. johannes --=-FHdQTOAFlZ9d6ddXmk99 Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Comment: Johannes Berg (powerbook) iQIcBAABAgAGBQJI2xN/AAoJEKVg1VMiehFYZhoQALUFNodZJ2L5/UKAA4CMJ0PO zzLWYCDC6mbH5i8OZt0NetcNn4qIwYZ7TG5GhbbxQY0onsSjS6rgmE8C2OzAD/Tc 7N2GeHKlOpidbPnDeYBXn8LxktDo5wjGswbW8Aatmt3ZmnCZlCPgHDvjpEPMoGwd eKxr9w9WKtIvcg2yqwsG2gpOERfO8QbNShHdLjmbn3tXVD7IFqOlnzB59lKF+OnB 3gIkciKwU2GCEfsxI86gCIPhwwkTR5ja0VYQeJk0YSIPpJva38Bb3cNFHTwOFCjJ NtWhcfm1RKjpS0rs6MNxISkHjBZ5QTxIXhF1Xzfsu0ns6bwoAn9cvFaos4lnRDcx pu1Vsd8iXlq+D+ztxbIFesC8iayj2KfKElrva9DAkDPn4XTEKQ/4rvLAY3TrEXlW TF6r0ulYm/WT9XjiFyVmVRm7seCBOwOh8fcn+vBM12Jcv+cSbDdBQv80vzeFFqTk 5JOOGUKpAqzQyWWQhJYyWT6fX+5yUzqG5AruW+ozsmRwTL1xXbFgapOO2Q/32xp+ MsQ9cg3ZW/edtl0uK3z/leD+bpQPHKsjpDln8aA6POiGW3rhnTlz4UZeYMy5Jih8 sBImN5+jGEgsjc1OLNC53yMiM4ubgszsFkjxDjFHTYboeUINRYCBq6hgPXv/bKd+ KdvPUHYmuQ36c5WDqUUU =E7u+ -----END PGP SIGNATURE----- --=-FHdQTOAFlZ9d6ddXmk99--