Mandag 01 mai 2006 07:51, skrev du :
> From: Per Øyvind Karlsen <pkarlsen@xxxxxxxxxxxx>
> Date: Fri, 28 Apr 2006 00:42:07 +0200
>
> > When running 2.6.17-rc1 or rc2 I seem to get a lot of these oops, not
> > certain about what exactly causes those, but might seem to happen during
> > a little load..
> > 2.6.16 runs fine without this ever happening.
> >
> > Machine is a blade 100..
>
> I did some investigating. Do you have preemption enabled? That's the
> only way this bug could possibly trigger.
Yupps
>
> Jim reported a nearly identical OOPS to your's and his provided config
> has preemption enabled.
>
> This patch should fix the problem:
>
> diff --git a/arch/sparc64/mm/tlb.c b/arch/sparc64/mm/tlb.c
> index a079cf4..3f10fc9 100644
> --- a/arch/sparc64/mm/tlb.c
> +++ b/arch/sparc64/mm/tlb.c
> @@ -8,6 +8,7 @@ #include <linux/init.h>
> #include <linux/percpu.h>
> #include <linux/mm.h>
> #include <linux/swap.h>
> +#include <linux/preempt.h>
>
> #include <asm/pgtable.h>
> #include <asm/pgalloc.h>
> @@ -24,6 +25,8 @@ void flush_tlb_pending(void)
> {
> struct mmu_gather *mp = &__get_cpu_var(mmu_gathers);
>
> + preempt_disable();
> +
> if (mp->tlb_nr) {
> flush_tsb_user(mp);
>
> @@ -38,6 +41,8 @@ #endif
> }
> mp->tlb_nr = 0;
> }
> +
> + preempt_enable();
> }
>
> void tlb_batch_add(struct mm_struct *mm, unsigned long vaddr, pte_t *ptep,
> pte_t orig) -
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This didn't do the trick, it made things crash at once, spitting out several
pages of errors.. :\
A lot of these with tracebacks..
BUG: scheduling while atomic: swapper/0x00000011/1
--
Regards,
Per Øyvind Karlsen
Mandrakesoft becomes Mandriva
-
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