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    SubjectRe: 2.6.21-rc5 possible regression: KDE processes die silently (was: 2.6.21-rc3-mm2: KDE processes die while system is idle)
    On Sun, Apr 01, 2007 at 06:48:03PM +0200, Rafael J. Wysocki wrote:
    > 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").

    Is it easily reproducible and still present with the latest -git?
    If yes, can you bisect?

    > IMO it's a SUSE bug.

    We also have a report of KDE crashes on Debian [1].
    And just a few days ago a kernel bug kwin ran into was fixed [2].

    If the pattern is "works with 2.6.20 but does not work with 2.6.21-rc",
    then it's most likely a kernel regression.

    > Greetings,
    > Rafael


    [2] commit 14e9d5730adfca26452b3a2838a80af6950556f5


    "Is there not promise of rain?" Ling Tan asked suddenly out
    of the darkness. There had been need of rain for many days.
    "Only a promise," Lao Er said.
    Pearl S. Buck - Dragon Seed

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