linux-kernel - Re: [GIT PULL] perf fixes

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:	Thu, 14 Mar 2013 23:42:35 +0100
From:	Stephane Eranian <eranian@...gle.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [GIT PULL] perf fixes

On Thu, Mar 14, 2013 at 11:19 PM, Stephane Eranian <eranian@...gle.com> wrote:
> On Thu, Mar 14, 2013 at 11:17 PM, Linus Torvalds
> <torvalds@...ux-foundation.org> wrote:
>> On Thu, Mar 14, 2013 at 3:09 PM, Stephane Eranian <eranian@...gle.com> wrote:
>>>
>>> Could be related to suspend/resume. But were you running perf across
>>> that resume/suspend cycle?
>>
>> No.
>>
>> In most cases I was running a perf record before and after (but not
>> *while* suspending)
>>
>> In at least one other crash, I didn't run perf before at all, so the
>> first time I used perf was after the resume.
>>
>> So in no cases did I actually have any perf stuff active over the
>> suspend itself.
>>
> Ok, simpler test case then.
>
>>> Let's see if we can reproduce the problem on the same ChromeBook you
>>> have. Don't have one myself.
>>
>> I don't imagine it should be about chromebook per se, because afaik
>> all of pmu suspend/resume is done by the kernel, no firmware involved.
>>
>> So I'd assume it should happen with any IvyBridge.
>>
> Will try on a desktop IvyBridge too.

Ok, it happens on my IVB desktop too, so I can investigate...
--
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/