linux-kernel - Re: WARNING: Adjusting tsc more then 11%

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: <1331082811.2191.167.camel@work-vm>
Date:	Tue, 06 Mar 2012 17:13:31 -0800
From:	John Stultz <john.stultz@...aro.org>
To:	Sasha Levin <levinsasha928@...il.com>
Cc:	Dave Jones <davej@...hat.com>,
	Fedora Kernel Team <kernel-team@...oraproject.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: WARNING: Adjusting tsc more then 11%

On Mon, 2012-03-05 at 22:36 +0200, Sasha Levin wrote:
> On Mon, Mar 5, 2012 at 10:27 PM, John Stultz <john.stultz@...aro.org> wrote:
> > On Mon, 2012-03-05 at 22:16 +0200, Sasha Levin wrote:
> >> On Mon, Mar 5, 2012 at 9:57 PM, Dave Jones <davej@...hat.com> wrote:
> >> > On Mon, Mar 05, 2012 at 11:50:10AM -0800, John Stultz wrote:
> >> >
> >> >  > So it would be great to get further feedback from folks who are seeing
> >> >  > this warning, so we can really hammer this out, but I don't want the
> >> >  > warning spooking anyone into thinking things are terribly broken.
> >> >
> >> > One of the reports was from someone using vbox. I'm now wondering if
> >> > the other users are using some other flavour of virt. I'll ask.
> >>
> >> I've reported this issue with regards to KVM before
> >> (http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/85632) but
> >> according to this thread it's not really KVM specific.
> >>
> >> It's easily reproducible using Dave's trinity running inside a KVM guest.
> >
> > Great! Do you have a link to trinity? (Google just gives me a video of
> > its use and links to various churches)
> 
> Sure, the git tree is here: codemonkey.org.uk/projects/trinity/trinity.git
> 
> Basically just start 2*vcpu instances of trinity inside the guest and
> wait a bit.

So I left trinity running in a 2vcpu kvm guest for ~5 hours and haven't
seen anything yet. Could you send me a .config for the guest kernel and
maybe your kvm command line? 

Also, it shouldn't really matter, but are the guests 32bit or 64bit?

thanks
-john


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/