SMP: BUG with PREEMPT enabled

[Russell King - ARM Linux]

On Wed, Oct 14, 2009 at 04:56:18PM +0530, Shilimkar, Santosh wrote:
> > On the latest ARM kernel(v2.6.32-rc4),I have observed a BUG() dump when

Umm...

> @@ -350,7 +350,7 @@ static inline void local_flush_tlb_mm(struct mm_struct *mm)
>  	if (tlb_flag(TLB_WB))
>  		dsb();
>  
> -	if (cpu_isset(smp_processor_id(), mm->cpu_vm_mask)) {
> +	if (cpu_isset(get_cpu(), mm->cpu_vm_mask)) {

This isn't 2.6.32-rc4 code - which actually is:

        if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(mm))) {

so what kernel version are you working with?

The result is this patch won't apply to 2.6.32-rc4.