linux-kernel - Re: Kernel freeze on AMD FX-9590 CPU during I/O

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Message-ID: <20171012201721.qw7ng6newibksn5f@pd.tnic>
Date:   Thu, 12 Oct 2017 22:17:21 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Dmitrii Tcvetkov <demfloro@...floro.ru>
Cc:     Andy Lutomirski <luto@...nel.org>, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org
Subject: Re: Kernel freeze on AMD FX-9590 CPU during I/O

On Thu, Oct 12, 2017 at 11:01:24PM +0300, Dmitrii Tcvetkov wrote:
> Hello,
> 
> Since linux kernel 4.14-rc1 almost any I/O has a chance to freeze kernel
> (no log in /dev/tty0 nor /dev/ttyS0 not netconsole, no ARP answer over
> network) on one of my machines. Compiling linux kernel reproduces the
> issue reliably so far.
> 
> Bisecting between v4.13 and v4.14-rc1 led me to commit
> 94b1b03b519b81c494900cb112aa00ed205cc2d9

There's a candidate fix in case you wanna try it:

https://lkml.kernel.org/r/8eccc9240041ea7cb94624cab8d07e2a6e911ba7.1507567665.git.luto@kernel.org

-- 
Regards/Gruss,
    Boris.

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