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Date: Fri, 22 Dec 2017 16:03:12 +0100
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Naresh Kamboju <naresh.kamboju@linaro.org>
Cc: stable <stable@vger.kernel.org>, lkft-triage@lists.linaro.org,
        Sumit Semwal <sumit.semwal@linaro.org>
Subject: Re: pending 4.14-rc boot failures on arm64
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On Fri, Dec 22, 2017 at 06:09:00PM +0530, Naresh Kamboju wrote:
> On 22 December 2017 at 15:50, Naresh Kamboju <naresh.kamboju@linaro.org> wrote:
> > On 22 December 2017 at 14:36, Greg Kroah-Hartman
> > <gregkh@linuxfoundation.org> wrote:
> >> On Fri, Dec 22, 2017 at 02:29:55PM +0530, Naresh Kamboju wrote:
> >>> On 22 December 2017 at 12:41, Greg Kroah-Hartman
> >>> <gregkh@linuxfoundation.org> wrote:
> >>> > On Thu, Dec 21, 2017 at 04:35:30PM -0600, Dan Rue wrote:
> >>> >> Hi Greg,
> >>> >>
> >>> >> It looks like the pending v4.14.8-159-gc2a94d1a609 fails to boot on all
> >>> >> arm64 boards. hikey and juno are failing for us, and I see similar arm64
> >>> >> boot failures reported by kernelci.
> >>> >>
> >>> >> Still investigating root cause.
> >>> >
> >>> > Any help in bisecting to find the problem here would be great...
> >>>
> >>> Booting now on arm64 Hikey board. After reverting 83e3c48729d.
> >>>
> >>> git revert 83e3c48729d9ebb7af5a31a504f3fd6aff0348c4
> 
> Reverting above commit 83e3c48 (mm/sparsemem: Allocate mem_section at)
> might not be the right way to fix this problem.

No it isn't :)

> Instead cherry pick this commit 629a359bd to fix ARM64 boot crash problem.
> (mm/sparsemem: Fix ARM64 boot crash when CONFIG_SPARSEMEM_EXTREME=y)
> 
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
> branch: linux-4.14.y
> 
> git cherry-pick  629a359bdb0e0652a8227b4ff3125431995fec6e

I've taken this patch and added it to the queue, thanks.

greg k-h