linux-kernel - Re: [regression] __tick_program

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]

Date:	Tue, 9 Sep 2008 15:27:32 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Frans Pop <elendil@...net.nl>
cc:	linux-kernel@...r.kernel.org
Subject: Re: [regression] __tick_program_event of hpet is stuck

On Tue, 9 Sep 2008, Frans Pop wrote:
> On Tuesday 09 September 2008, Thomas Gleixner wrote:
> > > CE: __tick_program_event of hpet is stuck 1468f1b3c9 1468f1c751
> > > CE: increasing min_delta_ns 5000 to 10000 nsec
> > > [...]
> > > CE: __tick_program_event of hpet is stuck 33576032f74 33576035684
> > > CE: increasing min_delta_ns 10000 to 20000 nsec
> > > [...]
> > > CE: __tick_program_event of hpet is stuck 63242b30d28 63242b35b48
> > > CE: increasing min_delta_ns 20000 to 40000 nsec
> >
> > what's the highest value which you have seen ?
> 
> These are the highest I've seen, but that's possibly because I haven't 
> left the system running for longer. There's just under an hour between 
> the messages (kern.log has 00:59:17, 01:56:38, 02:51:23 for the three 
> increases listed above) with the first fairly shortly after boot.
> 
> I've just awakened the laptop from suspend and will let it sit for the 
> rest of the day. If I get any higher values I'll let you know.

It's nothing to worry about. I out the WARN_ON() there to get some
information about the validation of min_delta_ns and to see in which
range this happens.

I'm going to remove the WARN_ON() and just keep the information that
we need to increase the min_delta_ns value for safe operation.

Thanks,

	tglx
--
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/