Return-path: Received: from mout.kundenserver.de ([212.227.126.133]:38481 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753256AbeFITrS (ORCPT ); Sat, 9 Jun 2018 15:47:18 -0400 Subject: Re: b43 crashes on rmmod (bcm4331) To: =?UTF-8?Q?Michael_B=c3=bcsch?= Cc: b43-dev@lists.infradead.org, linux-wireless References: <75e4b424-4c75-5abd-1ef0-c2537d329b10@lukas-wirz.de> <20180609171159.59b5209c@wiggum> From: Wirz Message-ID: <6a78c68e-1062-5ad8-876c-f7d4c49ea492@lukas-wirz.de> (sfid-20180609_215150_527989_30E6C97D) Date: Sat, 9 Jun 2018 22:46:58 +0300 MIME-Version: 1.0 In-Reply-To: <20180609171159.59b5209c@wiggum> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="OQqRreG8JhetddKTvaxji886eqbYiKRf6" Sender: linux-wireless-owner@vger.kernel.org List-ID: This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --OQqRreG8JhetddKTvaxji886eqbYiKRf6 Content-Type: multipart/mixed; boundary="Tzc7mwIQp31cy1Vhj6bHTwps0wGRjzDdI"; protected-headers="v1" From: Wirz To: =?UTF-8?Q?Michael_B=c3=bcsch?= Cc: b43-dev@lists.infradead.org, linux-wireless Message-ID: <6a78c68e-1062-5ad8-876c-f7d4c49ea492@lukas-wirz.de> Subject: Re: b43 crashes on rmmod (bcm4331) References: <75e4b424-4c75-5abd-1ef0-c2537d329b10@lukas-wirz.de> <20180609171159.59b5209c@wiggum> In-Reply-To: <20180609171159.59b5209c@wiggum> --Tzc7mwIQp31cy1Vhj6bHTwps0wGRjzDdI Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: quoted-printable Hi Michael, On 09/06/18 18:11, Michael B=C3=BCsch wrote: > On Sat, 9 Jun 2018 15:08:24 +0300 > Wirz wrote: >=20 >> The regression I reported a few weeks ago for 4.15, exists also in 4.1= 6. >> That is, with a bcm4331/ht-phy b43 can be loaded and used without >> problems, but the driver crashes when it gets unloaded (making a hard >> reset of the machine necessary). This problem has been introduced >> between 4.14 and 4.15. >=20 > Thanks for your report. >=20 > I just checked the diff between 4.14 and 4.15 for b43 and bcma. It's > pretty small and there's no obvious candidate to me that could cause > such a regression. > This might be a change outside of b43 and bcma that triggered this > behavior. >=20 > Is is possible for you to create a git bisect to find the change that > actually broke this? > That would be really helpful. I can try that. What is the most efficient way to unload/recompile/load a single module without rebooting the machine too often? And it'll be a lot of hard resets ... cheers, lukas --=20 Do not believe the naysayers who say it cannot be done. --Tzc7mwIQp31cy1Vhj6bHTwps0wGRjzDdI-- --OQqRreG8JhetddKTvaxji886eqbYiKRf6 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iF0EARECAB0WIQQfsLWbEt//FEFwBMDWbaSYbwIjLQUCWxwusgAKCRDWbaSYbwIj LbOnAKCSZ7ICQuHaLP0dzIS13QM5R31jyACfXiTXa2sKRWuRu+EJnS3bO2gRC4E= =RFnl -----END PGP SIGNATURE----- --OQqRreG8JhetddKTvaxji886eqbYiKRf6--