linux-kernel - Re: Kernel 4.17.4 lockup

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] [day] [month] [year] [list]

Message-ID: <CAMe9rOqh9saaULM_+jNtzfYarbZScm+6KCEyibxxqn7GLvKwzA@mail.gmail.com>
Date:   Wed, 11 Jul 2018 09:53:41 -0700
From:   "H.J. Lu" <hjl.tools@...il.com>
To:     Dave Hansen <dave.hansen@...el.com>
Cc:     "H. Peter Anvin" <hpa@...or.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Andy Lutomirski <luto@...nel.org>,
        Mel Gorman <mgorman@...e.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Rik van Riel <riel@...riel.com>,
        Minchan Kim <minchan@...nel.org>
Subject: Re: Kernel 4.17.4 lockup

On Wed, Jul 11, 2018 at 9:49 AM, Dave Hansen <dave.hansen@...el.com> wrote:
> On 07/11/2018 09:29 AM, H.J. Lu wrote:
>>>> # It takes about 3 hour to bootstrap x86-64 GCC and 3 hour to run tests,
>>>> TIMEOUT=480
>>>> # Run it every hour,
>>>> 30 * * * * /export/gnu/import/git/gcc-test-x32/gcc-build -mx32
>>>> --with-pic > /dev/null 2>&1
>>> Oh, fun, one of those.
>>>
>>> How long does it take to reproduce?
>> About 5 hours.
>
> It would be much appreciated if you can get a console of some kind on
> that system and try to get a full KASAN oops out of it.  Serial, usb
> debug, or maybe netconsole would probably work.

I don't have serial ports. I will try netconsole.

> I'll also try to get it running on a big system and see if it triggers
> faster there.

I have seen it on machines with various amounts of cores and RAMs.
It triggers the fastest on 8 cores with 6GB RAM reliably.

-- 
H.J.