Re: [PATCH] [ARM] Unconditional call to smp_cross_call on UPcrashes

From: Russell King - ARM Linux
Date: Wed May 23 2012 - 15:18:19 EST


On Wed, May 23, 2012 at 07:52:48PM +0100, Russell King - ARM Linux wrote:
> On Thu, May 24, 2012 at 05:09:59PM +0000, Pantelis Antoniou wrote:
> > omap2plus_defconfig builds with SMP & SMP_ON_UP set.
> > On beagle (which is UP) is_smp() returns false and we don't call
> > smp_init_cpus which in turn does not initialize smp_cross_call which
> > remains NULL.
> >
> > When issuing a reboot we OOPS with a NULL dereference on stop smp_call.
> >
> > Fixed by checking is_smp in smp_send_stop()
>
> 1. No sign-off, so this patch _can't_ be committed.
>
> 2. Poor description. You say it oopses, but you don't include the oops.
> So, when I read this I've no idea exactly why this is failing. And it
> _shouldn't_ fail, so I want to know what you are seeing.

And 3. not sent to linux-arm-kernel (please copy with patches so everyone
in the ARM community is aware of them, thanks.)
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