linux-kernel - Re: [GIT pull] CPU hotplug updates for 4.9

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:   Fri, 10 Mar 2017 08:23:36 +0100
From:   Ingo Molnar <mingo@...nel.org>
To:     Bart Van Assche <Bart.VanAssche@...disk.com>
Cc:     "tglx@...utronix.de" <tglx@...utronix.de>,
        "torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "hpa@...or.com" <hpa@...or.com>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>
Subject: Re: [GIT pull] CPU hotplug updates for 4.9


* Bart Van Assche <Bart.VanAssche@...disk.com> wrote:

> On Thu, 2017-03-09 at 18:43 +0100, Thomas Gleixner wrote:
> > Ok, so it's random. Now it would be interesting what the rest of the system
> > does when this happens. I still have no idea why that IOAT setting has any
> > influence.
> 
> Hello Thomas,
> 
> The cpuhp_issue_call() hang happens during boot and before I get the chance to log
> in with ssh. Can you be more specific about what information you are looking for?
> 
> Anyway, the result of a new bisect I ran is as follows:
> * good: 631ddaba5905 ("Merge branches 'pm-sleep' and 'powercap'").
> * good: 80f1b3dea9d4 ("Merge branch 'device-properties'").
> * bad:  a67485d4bf97 ("Merge tag 'acpi-4.10-rc1' of
>   git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm").
> 
> Does this make sense to you?

The bisection information is really useful, if the failure mode is deterministic.

It would be nice to have more bisection points, the above range is about 5,000 
commits.

Thanks,

	Ingo