linux-kernel - Re: ktime_get_ts64() splat during resume

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Date:	Fri, 17 Jun 2016 18:12:47 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	"Rafael J. Wysocki" <rafael@...nel.org>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	lkml <linux-kernel@...r.kernel.org>,
	John Stultz <john.stultz@...aro.org>,
	Logan Gunthorpe <logang@...tatee.com>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Kees Cook <keescook@...omium.org>,
	Stable <stable@...r.kernel.org>,
	Andy Lutomirski <luto@...nel.org>,
	Brian Gerst <brgerst@...il.com>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux PM list <linux-pm@...r.kernel.org>,
	Stephen Smalley <sds@...ho.nsa.gov>
Subject: Re: ktime_get_ts64() splat during resume

On Fri, Jun 17, 2016 at 05:28:10PM +0200, Rafael J. Wysocki wrote:
> A couple of questions:
> - I guess this is reproducible 100% of the time?

Yap.

I took latest Linus + tip/master which has your commit.

> - If you do "echo disk > /sys/power/state" instead of using s2disk,
> does it still crash in the same way?

My suspend to disk script does:

echo 3 > /proc/sys/vm/drop_caches
echo "shutdown" > /sys/power/disk
echo "disk" > /sys/power/state

I don't use anything else for years now.

> - Are both the image and boot kernels the same binary?

Yep.

> Sure.  I thought Tony would pick them up.

Oh ok, next time I'll pester him.

:-)

But seriously, should we route the RAS-relevant stuff touching
drivers/acpi/apei/ through our tree instead? Provided you're fine with
them?

This way we'll unload some of the burden off you...

Thanks!

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.