From: Andrew Morton <akpm@osdl.org>
To: miles.lane@gmail.com, linux-kernel@vger.kernel.org,
greg@kroah.com, linux@dominikbrodowski.net,
alan@lxorguk.ukuu.org.uk, nickpiggin@yahoo.com.au
Subject: Re: 2.6.15-rc5-mm3 -- BUG: using smp_processor_id() in preemptible [00000001] code: swapper/1
Date: Thu, 15 Dec 2005 01:00:38 -0800 [thread overview]
Message-ID: <20051215010038.12ca576f.akpm@osdl.org> (raw)
In-Reply-To: <20051215004028.0bf9791f.akpm@osdl.org>
Andrew Morton <akpm@osdl.org> wrote:
>
> > Here's the BUG output:
> >
> > [4294671.538000] Freeing unused kernel memory: 220k freed
> > [4294671.538000] BUG: using smp_processor_id() in preemptible
> > [00000001] code: swapper/1
> > [4294671.539000] caller is mod_page_state_offset+0x12/0x28
> > [4294671.539000] [<c1003723>] dump_stack+0x16/0x1a
> > [4294671.539000] [<c110c1eb>] debug_smp_processor_id+0x77/0x90
> > [4294671.539000] [<c10413d3>] mod_page_state_offset+0x12/0x28
This'll plug the above.
Nick, please turn on the nice debugging options in future?
diff -puN mm/page_alloc.c~mm-page_state-opt-fix mm/page_alloc.c
--- devel/mm/page_alloc.c~mm-page_state-opt-fix 2005-12-15 00:50:56.000000000 -0800
+++ devel-akpm/mm/page_alloc.c 2005-12-15 00:51:07.000000000 -0800
@@ -1389,8 +1389,8 @@ void mod_page_state_offset(unsigned long
unsigned long flags;
void *ptr;
- ptr = &__get_cpu_var(page_states);
local_irq_save(flags);
+ ptr = &__get_cpu_var(page_states);
*(unsigned long *)(ptr + offset) += delta;
local_irq_restore(flags);
}
_
next prev parent reply other threads:[~2005-12-15 9:01 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-15 8:35 2.6.15-rc5-mm3 -- BUG: using smp_processor_id() in preemptible [00000001] code: swapper/1 Miles Lane
2005-12-15 8:40 ` Andrew Morton
2005-12-15 9:00 ` Andrew Morton [this message]
2005-12-15 18:48 ` Dave Jones
2005-12-15 9:06 ` Nick Piggin
2005-12-15 18:20 ` 2.6.15-rc5-mm3 -- bus may be hidden warning Dominik Brodowski
2005-12-15 8:40 ` 2.6.15-rc5-mm3 -- BUG: using smp_processor_id() in preemptible [00000001] code: swapper/1 Miles Lane
2005-12-15 12:24 ` Alan Cox
2005-12-15 16:33 ` Michal Piotrowski
2005-12-17 20:33 ` Miles Lane
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