From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Menzel Subject: Re: NULL pointer dereference: IP: [] sr_runtime_suspend+0xc/0x20 [sr_mod] Date: Tue, 09 Feb 2016 17:47:00 +0100 Message-ID: <1455036420.11996.5.camel@giantmonkey.de> References: <1453222373.3588.3.camel@giantmonkey.de> Mime-Version: 1.0 Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-GCYCE4FQiVBiYD78CAyB" Return-path: Received: from mail-wm0-f46.google.com ([74.125.82.46]:36655 "EHLO mail-wm0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755951AbcBIQrU (ORCPT ); Tue, 9 Feb 2016 11:47:20 -0500 Received: by mail-wm0-f46.google.com with SMTP id p63so166795293wmp.1 for ; Tue, 09 Feb 2016 08:47:19 -0800 (PST) In-Reply-To: Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Alexandre Rossi Cc: Alan Stern , Erich Schubert , Ben Hutchings , SCSI development list , 801925@bugs.debian.org --=-GCYCE4FQiVBiYD78CAyB Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Dear Debian and Linux folks, Am Mittwoch, den 20.01.2016, 23:07 +0100 schrieb Alexandre Rossi: > >> Could you please attach the debugging patch. Hopefully Alexandre, Eric= h, > >> or I will have some spare time to build an image from it. > > > > Actually, this patch is an attempt at a fix. After looking more > > carefully at your log pictures, I realized what the problem must be. > > > > It's too bad nobody was able to capture a log where the error > > occurred in sr_runtime_suspend, though -- all the logs in the bug > > report show sd_runtime_resume. >=20 > I just tested the patch applied on top of 4.3.3 (4.3.3-6 in Debian). >=20 > It still crashes at boot, but the stacktrace is different : it happens > in blk_post_runtime_resume . Maybe I'm bit by a different bug or maybe > the I need to try with 4.4. >=20 > I'll post the captured log when I have access to a wired network. I'd > be happy to provide the logs of a debugging patch. I tried Linux 4.3.5-1 [1], which entered Debian Sid/unstable yesterday, and I get the same null pointer dereference as Alexandre. As this is Linux 4.3 and not 4.4, I guess this is a different problem though. Alexandre, where you able to capture the stack trace? I=E2=80=99d s= ubmit a new bug report with this. Thanks, Paul [1] http://metadata.ftp-master.debian.org/changelogs/main/l/linux/linux_4.3= .5-1_changelog --=20 GPG-Schl=C3=BCssel: 33623E9B Fingerabdruck =3D 0EB1 649D 4361 D04F 3C70 6F71 4DD7 BF75 3362 3E9B Giant Monkey Software Engineering GmbH Brunnenstr. 7D 10119 Berlin Mitte Gesch=C3=A4ftsf=C3=BChrer Adrian Fuhrmann, Lion Vollnhals und Paul Menzel USt-IdNr.: DE281524720 HRB 139495 B Amtsgericht Charlottenburg --=-GCYCE4FQiVBiYD78CAyB Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAABCAAGBQJWuhgUAAoJEE3Xv3UzYj6bDdQP/iL9rLNkrRu1coCOKVWEeXX4 +UqhYBPTFvfYcBam3ixTCYY2vDYfBClPW7oWiJjadkBEcMKuZZavHFnR2qc7F73u dqxHondhCx1ByH7A0FI0zSb+b30uOMVF/fD/LDE4uyIbV7xqyq9i5LvatuWKBGIP /gwaI423Zh0gnc8W8Z25Up00VbClXoAbUg3kp79gPqohT3Y3I5TkXsQeCZxlOEwC byw5PtPnubZtk8chUSAegN64QejhRXLQzVi5OwTJb/9J046yZq51GQ4AScOAuO84 VJlY5V7yGiwo/3iluYYHu6hRGDT7vQ7XGTJgCvMZDvLG5Zz1z6q4UR9lMyb1wMde cuSGb1pZWk5QUyvqUi38HWyAKLf2XD3qrpxUx+0vzAIzuCd5EZ9HOVpIb8P6FNJY lB3DBz4uO/Ex4E35l3uVpadbBvh7ohoRViaePFCxqb2bYzYrfvRHqfcZzNA1S9pA QJoOoQ/vljcvJc+HQT3KdkGkGQpUDW7JugbIyovd4b0s3Px3bTHU9/3/Q0nP9ZwL mSM+ki0y9qVW2xco/JkAzSrlumHOw6G/jr/rf7XHjmq0PdB5+RFDY+n4bxljPlFp i+VVowI7mmqOmZvhEHi6LeoosRsUR8HqD9Q++7J4XeU+tcd7kvhf4S7tWRLGihq0 A7qKRE0m8ePlTD+Ci3TR =uVYV -----END PGP SIGNATURE----- --=-GCYCE4FQiVBiYD78CAyB--