Hello,
> From: Mariusz Kozlowski <m.kozlowski@xxxxxxxxxx>
> Date: Wed, 26 Mar 2008 12:46:53 +0100
>
> > Ok it worked. Now I get a bunch of these:
> >
> > BUG: using smp_processor_id() in preemptible [00000000] code: pidof/2471
> > caller is flush_ptrace_access+0xc0/0x1a0
>
> Here ya go:
>
> commit f6a843d939ade435e060d580f5c56d958464f8a5
> Author: David S. Miller <davem@xxxxxxxxxxxxx>
> Date: Wed Mar 26 04:51:12 2008 -0700
>
> [SPARC64]: flush_ptrace_access() needs preemption disable.
>
> Based upon a report by Mariusz Kozlowski.
>
> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
>
> diff --git a/arch/sparc64/kernel/ptrace.c b/arch/sparc64/kernel/ptrace.c
> index bcf58ec..aaae865 100644
> --- a/arch/sparc64/kernel/ptrace.c
> +++ b/arch/sparc64/kernel/ptrace.c
> @@ -70,6 +70,8 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
> if (tlb_type == hypervisor)
> return;
>
> + preempt_disable();
> +
> #ifdef DCACHE_ALIASING_POSSIBLE
> /* If bit 13 of the kernel address we used to access the
> * user page is the same as the virtual address that page
> @@ -108,6 +110,8 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
> for (; start < end; start += icache_line_size)
> flushi(start);
> }
> +
> + preempt_enable();
> }
>
> enum sparc_regset {
And this one also worked. Now I have a nice clean dmesg :)
Thanks,
Mariusz
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