linux-kernel - Re: [linux-pm] intermittent suspend problem again

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: <200912011328.15551.rjw@sisk.pl>
Date:	Tue, 1 Dec 2009 13:28:15 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Ferenc Wagner <wferi@...f.hu>
Cc:	linux-pm@...ts.linux-foundation.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, linux-netdev@...r.kernel.org
Subject: Re: [linux-pm] intermittent suspend problem again

On Tuesday 01 December 2009, Ferenc Wagner wrote:
> "Rafael J. Wysocki" <rjw@...k.pl> writes:
> 
> > On Sunday 29 November 2009, Ferenc Wagner wrote:
> >
> >> "Rafael J. Wysocki" <rjw@...k.pl> writes:
> >> 
> >>> On Saturday 28 November 2009, Ferenc Wagner wrote:
> >>>
> >>>> "Rafael J. Wysocki" <rjw@...k.pl> writes:
> >>>> 
> >>>>> Compile with CONFIG_PM_VERBOSE (it does mean exactly that).
> >>>> 
> >>>> The last message now was:
> >>>> 
> >>>> e100: 0000:02:08.0: hibernate, may wakeup
> >>>> 
> >>>> Looks like hibernating the e100 driver is unstable.
> >>>
> >>> Can you verify that by trying to hibernate without the e100 driver?
> >> 
> >> Not really, as I still can't reliable reproduce the issue.  Since I'm
> >> running with suspend loglevel = 8, it's happened only twice (in a row),
> >> with seemingly exact same console output.  Some earlier freezes also
> >> happened in dpm_suspend_start, at least.  However, I can certainly add
> >> e100 to SUSPEND_MODULES under /etc/pm/config.d, and continue running
> >> with that.
> >
> > That's what I'd do.
> 
> That worked out mosty OK (no freeze in quite some hibernation cycles),
> but I'm continuing testing it.

Great, please let me know how it works out.

> On the other hand, I reverted 8fbd962e3, recompiled and replaced the
> module, and got the freeze during hibernation.  And that was the bulk of
> the changes since 2.6.31...  I'll revert the rest and test again, but
> that seems purely cosmetic, so no high hopes.
> 
> > In addition to that, you can run multiple hibernation/resume cycles in
> > a tight loop using the RTC wakealarm.
> 
> I'll do so, as soon as I find a way to automatically supply the dm-crypt
> passphrase... or even better, learn to hibernate to ramdisk from the
> initramfs. :)

Well, you don't need to use swap encryptuon for _testing_. :-)

Thanks,
Rafael
--
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/