linux-kernel - Re: linux-next: something wrong with 5-level paging

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Message-ID: <CANaxB-xwkvvFHL=gZjKktyd2YioCH3s5Di9o5vHkqKHju_tx0g@mail.gmail.com>
Date:   Fri, 24 Mar 2017 14:01:14 -0700
From:   Andrei Vagin <avagin@...il.com>
To:     "Kirill A. Shutemov" <kirill@...temov.name>
Cc:     "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        LKML <linux-kernel@...r.kernel.org>, linux-mm@...ck.org
Subject: Re: linux-next: something wrong with 5-level paging

On Fri, Mar 24, 2017 at 5:06 AM, Kirill A. Shutemov
<kirill@...temov.name> wrote:
> On Tue, Mar 21, 2017 at 03:03:20PM -0700, Andrei Vagin wrote:
>> Hi,
>>
>> I reproduced it locally. This kernel doesn't boot via kexec, but it
>> can boot if we set it via the qemu -kernel option. Then I tried to
>> boot the same kernel again via kexec and got a bug in dmesg:
>> [ 1252.014292] BUG: unable to handle kernel paging request at ffffd204f000f000
>> [ 1252.015093] IP: ident_pmd_init.isra.5+0x5a/0xb0
>> [ 1252.015636] PGD 0
>
> Sorry for this.
>
> http://lkml.kernel.org/r/20170324120458.nw3fwpmdptjtj5qb@node.shutemov.name

It works for me. Thanks.
https://travis-ci.org/avagin/linux/builds/214768664

>
> --
>  Kirill A. Shutemov