From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sedat Dilek Subject: Re: linux-next: Tree for Apr 9 [cpufreq: NULL pointer deref] Date: Sat, 13 Apr 2013 11:55:54 +0200 Message-ID: References: <1923819.6Nb81T2TR8@vostro.rjw.lan> Reply-To: sedat.dilek@gmail.com Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <1923819.6Nb81T2TR8@vostro.rjw.lan> Sender: cpufreq-owner@vger.kernel.org To: "Rafael J. Wysocki" Cc: Viresh Kumar , Dirk Brandewie , Stephen Rothwell , linux-next@vger.kernel.org, linux-kernel@vger.kernel.org, cpufreq@vger.kernel.org, Linux PM list , Lists linaro-kernel , Nathan Zimmer List-Id: linux-next.vger.kernel.org On Sat, Apr 13, 2013 at 12:51 AM, Rafael J. Wysocki wrote= : > On Friday, April 12, 2013 11:08:37 PM Sedat Dilek wrote: >> On Fri, Apr 12, 2013 at 6:27 PM, Sedat Dilek = wrote: >> > On Fri, Apr 12, 2013 at 5:45 PM, Sedat Dilek wrote: >> >> On Fri, Apr 12, 2013 at 4:24 PM, Sedat Dilek wrote: >> >>> On Fri, Apr 12, 2013 at 10:23 AM, Viresh Kumar wrote: >> >>>> On 10 April 2013 11:44, Sedat Dilek wro= te: >> >>>>> I found this "[RFC PATCH] kbuild: Build linux-tools package wi= th 'make >> >>>>> deb-pkg'" from February 2012. >> >>>>> Can't say what happened to it... >> >>>> >> >>>> Sedat, >> >>>> >> >>>> Sorry for being late. I am down with Fever and throat infection= since few days. >> >>>> Still struggling with it.. >> >>>> >> >>>> There are few things i tried. Firstly the tag: next-20130326 is= bad as there are >> >>>> some bad commits in cpufreq core in it. >> >>>> >> >>>> I then tried latest linux-next/master on my Thinkpad (model nam= e : Intel(R) >> >>>> Core(TM) i7-2640M CPU @ 2.80GHz) and couldn't boot it up. My ub= untu >> >>>> just hanged. >> >>>> >> >>>> Then i tried Rafael's linux-next branch >> >>>> >> >>>> 079576f Merge branch 'pm-cpufreq-next' into linux-next >> >>>> >> >>>> And couldn't find any issues with it. I am easily able to remov= e/add cpus at >> >>>> runtime.. >> >>>> >> >>>> Can you give this branch a try? >> >>>> >> >>> >> >>> OK, you seem to be well again, nice to hear. >> >>> >> >>> I was doing the whole week spring-cleaning in the apartment of m= y parents. >> >>> Now, I have some minutes for a compilation run. >> >>> >> >>> I guess "cpufreq: Call __cpufreq_governor() with correct policy-= >cpus >> >>> mask" could be the correct fix, but will try the GIT branch you = have >> >>> mentioned. >> >>> >> >>> - Sedat - >> >>> >> >>> [1] http://git.kernel.org/cgit/linux/kernel/git/rafael/linux-pm.= git/commit/?h=3Dlinux-next&id=3De4969ebac83fdea78d89c779331396728a4e619= 9 >> >>> >> >> >> >> Both BROKEN here, specific pm-next commitid and pulling >> >> pm.git#linux-next into next-20130411 (see attached files). >> >> >> >> Is "cpufreq: convert cpufreq_driver to using RCU" the root cause = of this all? >> >> >> > >> > [ CC Nathan ] >> > >> > NO, wrong assumption. >> > >> > 2013-04-12 18:04 Sedat Dilek o [revert-cpufreq-rcu] Revert >> > "cpufreq: convert cpufreq_driver to using RCU" >> > 2013-04-12 18:04 Sedat Dilek o Revert "cpufreq: Call >> > __cpufreq_governor() with correct policy->cpus mask" >> > 2013-04-11 23:24 Rafael J. Wysocki M=E2=94=80=E2=94=90 [pm-next-0= 79576f] Merge branch >> > 'pm-cpufreq-next' into linux-next >> > >> > - Sedat - >> > >> > >> >> - Sedat - >> >> >> >> [1] http://git.kernel.org/cgit/linux/kernel/git/rafael/linux-pm.g= it/commit/?h=3Dlinux-next&id=3D5800043b2488a1c4c6e859af860644d37419d58b >> >> >> >>>> -- >> >>>> viresh >> >> [ TO Dirk (Author of Intel pstate driver) ] >> >> With CONFIG_X86_INTEL_PSTATE=3Dn (unset) I do not see the call-trace= ! >> >> My kernel-config and dmesg are attached. > > You're seeing a trouble with a new driver, then, so that's not a regr= ession. > What do you mean by this? What are the next steps to get this fixed? - Sedat - > Thanks for taking the time to debug this! > > Rafael > > > -- > I speak only for myself. > Rafael J. Wysocki, Intel Open Source Technology Center.