linux-kernel - Re: 2.6.21-rc5 possible regression: KDE processes die silently (was: 2.6.21-rc3-mm2: KDE processes die while system is idle)

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Message-Id: <200704011848.03971.rjw@sisk.pl>
Date:	Sun, 1 Apr 2007 18:48:03 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Tilman Schmidt <tilman@...p.cc>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.21-rc5 possible regression: KDE processes die silently (was: 2.6.21-rc3-mm2: KDE processes die while system is idle)

On Sunday, 1 April 2007 17:21, Tilman Schmidt wrote:
> I'm sorry to say this has now happened with kernel 2.6.21-rc5, too.
> I started a kernel compilation in the evening and came back in the
> morning to find all KDE decorations gone. All processes normally
> running for a KDE session and labelled "[kinit]" in ps were gone
> but everything else was running fine, and the system was still
> usable via ssh. /var/log/kdm.log and /var/log/Xorg.0.log contained
> nothing remotely suspicious. /var/log/messages had two lines I
> never saw before:
> 
> Mar 31 02:27:36 gx110 kernel: [153577.891443] ReiserFS: hda3: warning: vs-8115: get_num_ver: not directory or indirect item
> Mar 31 02:27:36 gx110 kernel: [153577.891559] ReiserFS: hda3: warning: vs-8115: get_num_ver: not directory or indirect item
> 
> But those didn't appear on previous occurrences of the "dying KDE"
> problem so I guess they are not related.
> 
> This is SUSE LINUX 10.0 (i586) running on a Dell OptiPlex GX110
> (Intel P3, 933 MHz, i810 chipset, 512 MB RAM, 60 GB ATA disk)
> % uname -a
> Linux gx110 2.6.21-rc5-noinitrd #1 PREEMPT Sat Mar 31 02:15:19 CEST 2007 i686 i686 i386 GNU/Linux
> % cat /proc/cmdline
> root=/dev/hda3 selinux=0 x11i=vesa video=intelfb:mode=1280x1024-32@70 nmi_watchdog=2 lapic 5
> Kernel configuration mostly-modular, based on standard SuSE kernel's
> /proc/config.gz, just compiling into the kernel everything I need to
> boot without an initrd and omitting some parts I'm not interested in.
> (.config attached.) What else might be relevant?
> 
> Again, this is a Heisenbug, ie. it's not reproducible and invariably
> happens when I'm away from the machine. (Probably Murphy at work.)
> It's pretty rare: I have seen it four times on 2.6.21-rc3-mm2 and
> once on 2.6.21-rc5, on a machine which spends about equal amounts
> of time running the latest stable, rc, and mm kernels. OTOH, so far
> it hasn't ever happened with any 2.6.20 or earlier kernel. Nor have
> I seen it with 2.6.21-rc[1-4] or 2.6.21-rc4-mm* - but for the -rc4
> and -rc4-mm releases that's not conclusive as those have only been
> running for a very short time.

I have a similar problem on x86_64 OpenSUSE 10.2, but it seems to happen
when a sound (eg. notification) is played while the display is suspended
(or "powered off").

IMO it's a SUSE bug.

Greetings,
Rafael
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