linux-kernel - Re: kernel panic due to https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2830bf6f05fb3e05bc4743274b806c821807a684

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Message-ID: <20190125081924.GF3560@dhcp22.suse.cz>
Date:   Fri, 25 Jan 2019 09:19:24 +0100
From:   Michal Hocko <mhocko@...nel.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     robert shteynfeld <robert.shteynfeld@...il.com>,
        Mikhail Zaslonko <zaslonko@...ux.ibm.com>,
        Linux List Kernel Mailing <linux-kernel@...r.kernel.org>,
        Gerald Schaefer <gerald.schaefer@...ibm.com>,
        Mikhail Gavrilov <mikhail.v.gavrilov@...il.com>,
        Dave Hansen <dave.hansen@...el.com>,
        Alexander Duyck <alexander.h.duyck@...ux.intel.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Pavel Tatashin <pasha.tatashin@...cle.com>,
        Steven Sistare <steven.sistare@...cle.com>,
        Daniel Jordan <daniel.m.jordan@...cle.com>,
        Bob Picco <bob.picco@...cle.com>
Subject: Re: kernel panic due to
 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2830bf6f05fb3e05bc4743274b806c821807a684

On Fri 25-01-19 08:37:04, Michal Hocko wrote:
> On Fri 25-01-19 17:48:32, Linus Torvalds wrote:
> > [ Just adding a lot of other people to the cc ]
> > 
> > Robert, could you add a dmesg of a successful boot to that bugzilla,
> > or just as an attachement in email to this group of people..
> > 
> > This looks to be with the Fedora kernel config. Two people reporting
> > it, it looks like similar machines.
> > 
> > I assume it's some odd memory sizing detail that happens to trigger a
> > particular case.
> 
> Quite possible.

Forgot to ask. Can we get a dmesg with 2830bf6f05fb ("mm,
memory_hotplug: initialize struct pages for the full memory section")
reverted and memblock=debug kernel command line parameter?
-- 
Michal Hocko
SUSE Labs