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Date:   Fri, 25 Jan 2019 16:58:10 +0100
From:   Michal Hocko <mhocko@kernel.org>
To:     robert shteynfeld <robert.shteynfeld@gmail.com>
Cc:     Linus Torvalds <torvalds@linux-foundation.org>,
        Mikhail Zaslonko <zaslonko@linux.ibm.com>,
        Linux List Kernel Mailing <linux-kernel@vger.kernel.org>,
        Gerald Schaefer <gerald.schaefer@de.ibm.com>,
        Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>,
        Dave Hansen <dave.hansen@intel.com>,
        Alexander Duyck <alexander.h.duyck@linux.intel.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Pavel Tatashin <pasha.tatashin@oracle.com>,
        Steven Sistare <steven.sistare@oracle.com>,
        Daniel Jordan <daniel.m.jordan@oracle.com>,
        Bob Picco <bob.picco@oracle.com>
Subject: Re: kernel panic due to
 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2830bf6f05fb3e05bc4743274b806c821807a684
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On Fri 25-01-19 10:52:06, robert shteynfeld wrote:
> The person who pointed to mm/page_alloc.c commits likely causing the
> issue did not have time to build a patched/reverted kernel to confirm
> his hypothesis.  When I tried backing out the two separate commits he
> suggested, the first commit (ie. the one in the subject) was the one
> that when backed out fixed the boot issue.  Reverting the second one
> had no effect.

OK, so can you provide the full dmesg (with revert) along wth
memblock=debug kernel parameter. Also would it be possible to configure
serial or net console to get the actual panic report please?
-- 
Michal Hocko
SUSE Labs