Re: 2.6.12-rc1-mm3
From: Borislav Petkov (petkov_at_uni-muenster.de)
Date: 03/31/05
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To: Andrew Morton <akpm@osdl.org> Date: Thu, 31 Mar 2005 22:57:03 +0200
On Thursday 31 March 2005 22:11, Andrew Morton wrote:
> Borislav Petkov <petkov@uni-muenster.de> wrote:
> > On Friday 25 March 2005 17:46, Borislav Petkov wrote:
> > > Hi Andrew,
> > >
> > > mm3 still not booting on my machine. Boot option 'nmi_watchdog=2' (my
> > > cpu is a dual core pentium 4 HT, 2.60 GHz) gets me a bit further in
> > > the boot process but it blocks there too.
> > >
> > > [output retyped from screen]:
> > > kernel: [ 4.109241] PM: Checking swsusp image.
> > > kernel: [ 4.109244] PM: Resume from disk failed.
> > > kernel: [ 4.112220] VFS: Mounted root (ext2 filesystem) readonly.
> > > kernel: [ 4.112465] Freeing unused kernel memory: 188k freed
> > > kernel: [ 4.142002] logips2pp: Detected unknown logitech mouse
> > > model 1 kernel: [ 4.274620] input: PS/2 Logitech Mouse on
> > > isa0060/serio1 <--- [point of previous blocks without boot option
> > > 'nmi_watchdog=2']---> INIT: version 2.86 booting
> > > Mounting a tmpfs over /dev... done.
> > > Creating initial device nodes... done.
> > > Setting parameters of disc: (none).
> > > Activating swap.
> > > kernel: [ 10.712648] Adding 976744k swap on /dev/hda2. Priority:-1
> > > extents:1 Checking root file system...
> > > fsck 1.36 (05-Feb-2005)
> > > /: clean, 127290/1831424 files, 898566/3662056 blocks
> > > [EOF]
> >
> > Hi Andrew,
> >
> > i finally got to run kdb within mm3 and I got a bit further but am not
> > sure whether I'm debugging in the right direction:
> >
> > After booting with "kdb=early" I found out that the kernel blocks with
> > the partial message:
> >
> > kmem_cache_create: Early error in slab task_struct
> > kernel BUG at mm/slab.c:1215
> > invalid operand: 0000 [#1]
> > PREEMPT SMP
>
> Beats me. Where did the kdb patch come from?
oss.sgi.com
> It sounds like kdb for some reason is leaving the calling task in
> in_interrupt() state when it shouldn't. You could try removing the
> in_interrupt() test, but things will probably die later on.
No, that doesn't change anything. It stops at the same point even on mm4 which
is without the kdb patch.
> It might be worth disabling preempt, although a bug there won't cause
> in_interrupt() to return true.
disabling preempt doesn't change that either. I'll run more kdb sessions
tomorrow to see what's going on.
> Did you send me your .config?
yes, in some of the previous mails but here you go again.
Regards,
Boris.
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