linux-kernel - Re: [PATCH] x86/iopl: Fake iopl(3) CLI/STI usage

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: <87mtob8jqp.ffs@tglx>
Date:   Fri, 17 Sep 2021 14:33:18 +0200
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Peter Zijlstra <peterz@...radead.org>, Ondrej Zary <linux@...y.sk>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH] x86/iopl: Fake iopl(3) CLI/STI usage

On Fri, Sep 17 2021 at 13:54, Peter Zijlstra wrote:
>> [   14.876824] fixup_iopl_exception: 333 callbacks suppressed
>> [   14.876832] traps: hpasmd[360] attempts to use CLI/STI, pretending it's a NOP, ip:80a5356
>
> I'd say...
>
> Not sure it's really worth it, but something like the below might
> help.

One entry per task is really good enough. Though that wont help for such
stuff which is started over and over again....

Thanks,

        tglx