linux-kernel - Re: [PATCH 1/5] Fix soft-lookup in stop machine on secondary cpu bring up

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: <1336577648.2498.9.camel@lorien2>
Date:	Wed, 09 May 2012 09:34:08 -0600
From:	Shuah Khan <shuahkhan@...il.com>
To:	Igor Mammedov <imammedo@...hat.com>
Cc:	shuahkhan@...il.com, linux-kernel@...r.kernel.org, rob@...dley.net,
	tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
	x86@...nel.org, luto@....edu, suresh.b.siddha@...el.com,
	avi@...hat.com, a.p.zijlstra@...llo.nl, johnstul@...ibm.com,
	arjan@...ux.intel.com, linux-doc@...r.kernel.org
Subject: Re: [PATCH 1/5] Fix soft-lookup in stop machine on secondary cpu
 bring up

On Wed, 2012-05-09 at 17:22 +0200, Igor Mammedov wrote:
> On 05/09/2012 05:04 PM, Shuah Khan wrote:
> > On Wed, 2012-05-09 at 12:24 +0200, Igor Mammedov wrote:
> >> When bringing up cpuX1, it could stall in start_secondary
> >> before setting cpu_callin_mask for more than 5 sec. That forces
> >> do_boot_cpu() to give up on waiting and go to error return path
> >> printing messages:
> >>    pr_err("CPU%d: Stuck ??\n", cpuX1);
> >
> > I am seeing this with the linux-next May 7th build on my laptop HP
> > EliteBook 8440p during boot. Could this problem be not specific to virt
> > envs.? Anybody else seeing it?
> 
> I could only guess that on bare metal SMI or other firmware issue may interfere with AP boot.
> Could you test if this patch-set fixes issue for you?
> And do you see the same problem during suspend/resume (assuming that it's booted without problem)?
> 

I had to abandon the boot and go back to distro installed kernel - yes I
will test with your patch set and see if the problem goes away. Might
not happen until close to end of day today, but will report back.

-- Shuah


--
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/