linux-kernel - Re: [PATCH] powerpc: booke: fix boot crash due to null hugepd

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Date:   Wed, 17 May 2017 09:30:46 +0000
From:   Laurentiu Tudor <laurentiu.tudor@....com>
To:     Greg KH <gregkh@...uxfoundation.org>
CC:     "devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
        "arnd@...db.de" <arnd@...db.de>, Roy Pledge <roy.pledge@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "agraf@...e.de" <agraf@...e.de>,
        Catalin Horghidan <catalin.horghidan@....com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Ioana Ciornei <ioana.ciornei@....com>,
        Leo Li <leoyang.li@....com>,
        Bharat Bhushan <bharat.bhushan@....com>
Subject: Re: [PATCH] powerpc: booke: fix boot crash due to null hugepd

Hi Greg,

On 05/17/2017 12:15 PM, Greg KH wrote:
> On Tue, May 16, 2017 at 09:47:52AM -0500, laurentiu.tudor@....com wrote:
>> From: Laurentiu Tudor <laurentiu.tudor@....com>
>>
>> On 32-bit book-e machines, hugepd_ok() does not take
>> into account null hugepd values, causing this crash at boot:
>>
>
> $ ./scripts/get_maintainer.pl --file arch/powerpc/include/asm/nohash/pgtable.h
> Benjamin Herrenschmidt <benh@...nel.crashing.org> (supporter:LINUX FOR POWERPC (32-BIT AND 64-BIT))
> Paul Mackerras <paulus@...ba.org> (supporter:LINUX FOR POWERPC (32-BIT AND 64-BIT))
> Michael Ellerman <mpe@...erman.id.au> (supporter:LINUX FOR POWERPC (32-BIT AND 64-BIT),commit_signer:2/3=67%)
> "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com> (commit_signer:2/3=67%,authored:1/3=33%,added_lines:3/8=38%,removed_lines:2/3=67%)
> Scott Wood <oss@...error.net> (commit_signer:1/3=33%)
> Laurentiu Tudor <laurentiu.tudor@....com> (commit_signer:1/3=33%,authored:1/3=33%,added_lines:1/8=12%,removed_lines:1/3=33%)
> Christophe Leroy <christophe.leroy@....fr> (commit_signer:1/3=33%,authored:1/3=33%,added_lines:4/8=50%)
> linuxppc-dev@...ts.ozlabs.org (open list:LINUX FOR POWERPC (32-BIT AND 64-BIT))
> linux-kernel@...r.kernel.org (open list)
>
> I'm not listed there at all, any specific reason you sent this to me?
> Nothing I can do with it...
>

Just some finger trouble on my side. Please disregard and sorry for the 
noise.

---
Best Regards, Laurentiu