linux-kernel - Re: [next] arm: boot failed - PC is at cpu_ca15_set_pte

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CA+G9fYsJtp6YtDF=jHuq23BN8e=CZ-FQZm+7nYt_kG=NL5-2fQ@mail.gmail.com>
Date:   Wed, 20 Apr 2022 18:34:25 +0530
From:   Naresh Kamboju <naresh.kamboju@...aro.org>
To:     Max Krummenacher <max.oss.09@...il.com>
Cc:     Ard Biesheuvel <ardb@...nel.org>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        lkft-triage@...ts.linaro.org,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Arnd Bergmann <arnd@...db.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        max.krummenacher@...adex.com, Shawn Guo <shawnguo@...nel.org>,
        Stefano Stabellini <stefano.stabellini@...inx.com>,
        Christoph Hellwig <hch@....de>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        "Eric W. Biederman" <ebiederm@...ssion.com>
Subject: Re: [next] arm: boot failed - PC is at cpu_ca15_set_pte_ext

Hi Max,

On Wed, 20 Apr 2022 at 13:20, Max Krummenacher <max.oss.09@...il.com> wrote:
>
> Am Mittwoch, den 20.04.2022, 09:31 +0200 schrieb Ard Biesheuvel:
> > On Tue, 19 Apr 2022 at 12:59, Naresh Kamboju <naresh.kamboju@...aro.org> wrote:
> > > Linux next 20220419 boot failed on arm architecture qemu_arm and BeagleBoard
> > > x15 device.
> > >
> > > kernel crash log from x15:
> > > -----------------
> > > [    6.866516] 8<--- cut here ---
> > > [    6.869598] Unable to handle kernel paging request at virtual
> > > address f000e62c

<trim>

> > Unfortunately, the vmlinux.xz file I downloaded from the link below
> > seems to be different from the one that produced the crash, given that
> > the LR address of c04cfeb8 does not seem to correspond with
> > handle_mm_fault+0x60c/0xed0.
> >
> > Can you please double check the artifacts?
>
> Commit "mm: check against orig_pte for finish_fault()" introduced this,
> i.e. on yesterdays next reverting a066bab3c0eb made a i.MX6 boot again.

Thanks for the pointers,
I have reverted the suggested commit and boot pass now.

Revert "mm: check against orig_pte for finish_fault()"
       This reverts commit a066bab3c0eb8f6155257f1345f07d1f6550bc4a.

> A fix is discussed here:
> https://lore.kernel.org/all/YliNP7ADcdc4Puvs@xz-m1.local/
>
> Max

- Naresh