lkml.org 
[lkml]   [2004]   [Feb]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: 2.6.3-rc2-mm1
Anton Blanchard <anton@samba.org> wrote:
>
>
> > This kernel and also 2.6.3-rc1-mm1 have a nasty bug which causes
> > current->preempt_count to be decremented by one on each hard IRQ. It
> > manifests as a BUG() in the slab code early in boot.
> >
> > Disabling CONFIG_DEBUG_SPINLOCK_SLEEP will fix this up. Do not use this
> > feature on ia32, for it is bust.
>
> A few questions spring to mind. Like who wrote that dodgy patch?

The dog wrote my homework?

> And any ideas how said person (who will remain nameless) broke ia32?

Not really. I spent a couple of hours debugging the darn thing, then gave
up and used binary search to find the offending patch.

<looks>

include/asm-i386/hardirq.h:IRQ_EXIT_OFFSET needs treatment, I bet.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 14:00    [W:1.428 / U:0.028 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site