Messages in this thread | | | Date | Sat, 29 Sep 2012 09:13:18 +0200 | From | Ingo Molnar <> | Subject | Re: kexec/kdump kernel fails to start |
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* Yinghai Lu <yinghai@kernel.org> wrote:
> On Sun, Sep 23, 2012 at 1:27 PM, Dan Carpenter <dan.carpenter@oracle.com> wrote: > > On Wed, Sep 05, 2012 at 11:34:25PM +0800, Cong Wang wrote: > >> On Wed, Sep 5, 2012 at 1:32 AM, Flavio Leitner <fbl@redhat.com> wrote: > >> > Hi folks, > >> > > >> > I have system that no longer boots kdump kernel. Basically, > >> > > >> > # echo c > /proc/sysrq-trigger > >> > > >> > to dump a vmcore doesn't work. It just hangs after showing the usual > >> > panic messages. I've bisected the problem and the commit introducing > >> > the issue is the one below. > >> > > >> > Any idea? > >> > > >> > commit 722bc6b16771ed80871e1fd81c86d3627dda2ac8 > >> > Author: WANG Cong <xiyou.wangcong@gmail.com> 2012-03-05 20:05:13 > >> > Committer: Ingo Molnar <mingo@elte.hu> 2012-03-06 05:38:26 > >> > Parent: 550cf00dbc8ee402bef71628cb71246493dd4500 (Merge tag 'mmc-fixes-for-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc) > >> > Child: a6fca40f1d7f3e232c9de27c1cebbb9f787fbc4f (x86, tlb: Switch cr3 in leave_mm() only when needed) > >> > Branches: master, remotes/origin/master > >> > Follows: v3.3-rc6 > >> > Precedes: v3.5-rc1 > >> > > >> > x86/mm: Fix the size calculation of mapping tables > >> > >> There was some attempt to fix this: > >> https://patchwork.kernel.org/patch/1195751/ > >> > >> but for some reason it is not accepted. > > > > I filed a bug for this: > > https://bugzilla.kernel.org/show_bug.cgi?id=47881 > > > > Is it fixed now? > > that offending patch should be reverted... > > 722bc6b16771ed80871e1fd81c86d3627dda2ac8
It does not revert cleanly - could someone send a (kexec tested!) patch with a proper description?
Thanks,
Ingo
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