From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rolf Eike Beer Subject: Re: [Bug #16537] TREE_RCU hangs at boot Date: Mon, 20 Sep 2010 21:20:27 +0200 Message-ID: <201009202120.36708.eike-kernel@sf-tec.de> References: <20100920182626.GE2408@linux.vnet.ibm.com> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart1691210.Wf467zbl0W"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20100920182626.GE2408-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org> Sender: kernel-testers-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: To: paulmck-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org Cc: "Rafael J. Wysocki" , Linux Kernel Mailing List , Kernel Testers List , Maciej Rutecki --nextPart1691210.Wf467zbl0W Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Paul E. McKenney wrote: > On Sun, Sep 12, 2010 at 09:08:42PM +0200, Rafael J. Wysocki wrote: > > This message has been generated automatically as a part of a report > > of regressions introduced between 2.6.34 and 2.6.35. > >=20 > > The following bug entry is on the current list of known regressions > > introduced between 2.6.34 and 2.6.35. Please verify if it still should > > be listed and let the tracking team know (either way). > >=20 > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16537 > > Subject : TREE_RCU hangs at boot > > Submitter : Rolf Eike Beer > > Date : 2010-08-07 12:18 (37 days old) > > Handled-By : Paul E. McKenney >=20 > I cannot reproduce this. The function that is claimed to hang contains > only printk()s. I have asked the guys who can actually reproduce it > to try a later kernel, and will let you know how this goes. >=20 > If you cannot trust printk(), who can you trust? ;-) I suspect that it is related to: http://git.kernel.org/?p=3Dlinux/kernel/git/stable/linux-2.6.35.y.git;a=3Dc= ommit;h=3D5a8477871f0b45664eedfa352c3942093408a169 I'll try to test plain 2.6.35 with this patch and see it this works. Eike --nextPart1691210.Wf467zbl0W Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.15 (GNU/Linux) iEYEABECAAYFAkyXtAQACgkQXKSJPmm5/E7zFACePhoz4/p6m9Xt7nJ4jlJ66yin JyoAoIC/Bv/kd8xy/t67kwn6qRl8AJL5 =IMiM -----END PGP SIGNATURE----- --nextPart1691210.Wf467zbl0W-- From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757192Ab0ITT1R (ORCPT ); Mon, 20 Sep 2010 15:27:17 -0400 Received: from mail.sf-mail.de ([62.27.20.61]:59236 "EHLO mail.sf-mail.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750835Ab0ITT1R (ORCPT ); Mon, 20 Sep 2010 15:27:17 -0400 X-Greylist: delayed 405 seconds by postgrey-1.27 at vger.kernel.org; Mon, 20 Sep 2010 15:27:16 EDT From: Rolf Eike Beer To: paulmck@linux.vnet.ibm.com Subject: Re: [Bug #16537] TREE_RCU hangs at boot Date: Mon, 20 Sep 2010 21:20:27 +0200 User-Agent: KMail/1.13.5 (Linux/2.6.34.4-0.1-desktop; KDE/4.5.1; i686; ; ) Cc: "Rafael J. Wysocki" , Linux Kernel Mailing List , Kernel Testers List , Maciej Rutecki References: <20100920182626.GE2408@linux.vnet.ibm.com> In-Reply-To: <20100920182626.GE2408@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart1691210.Wf467zbl0W"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <201009202120.36708.eike-kernel@sf-tec.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --nextPart1691210.Wf467zbl0W Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Paul E. McKenney wrote: > On Sun, Sep 12, 2010 at 09:08:42PM +0200, Rafael J. Wysocki wrote: > > This message has been generated automatically as a part of a report > > of regressions introduced between 2.6.34 and 2.6.35. > >=20 > > The following bug entry is on the current list of known regressions > > introduced between 2.6.34 and 2.6.35. Please verify if it still should > > be listed and let the tracking team know (either way). > >=20 > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D16537 > > Subject : TREE_RCU hangs at boot > > Submitter : Rolf Eike Beer > > Date : 2010-08-07 12:18 (37 days old) > > Handled-By : Paul E. McKenney >=20 > I cannot reproduce this. The function that is claimed to hang contains > only printk()s. I have asked the guys who can actually reproduce it > to try a later kernel, and will let you know how this goes. >=20 > If you cannot trust printk(), who can you trust? ;-) I suspect that it is related to: http://git.kernel.org/?p=3Dlinux/kernel/git/stable/linux-2.6.35.y.git;a=3Dc= ommit;h=3D5a8477871f0b45664eedfa352c3942093408a169 I'll try to test plain 2.6.35 with this patch and see it this works. Eike --nextPart1691210.Wf467zbl0W Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.15 (GNU/Linux) iEYEABECAAYFAkyXtAQACgkQXKSJPmm5/E7zFACePhoz4/p6m9Xt7nJ4jlJ66yin JyoAoIC/Bv/kd8xy/t67kwn6qRl8AJL5 =IMiM -----END PGP SIGNATURE----- --nextPart1691210.Wf467zbl0W--