Re: 2.6.18-rc5-mm1

Greg KH
2006-09-02T08:44:58Z

On Sat, Sep 02, 2006 at 01:37:13AM -0700, Jeremy Fitzhardinge wrote:
> Jeremy Fitzhardinge wrote:
> >The NULL EIP is desc->handle_irq in do_IRQ():
> >
> > asm volatile(
> > " xchgl %%ebx,%%esp \n"
> > " call *%%edi \n"
> > " movl %%ebx,%%esp \n"
> > : "=a" (arg1), "=d" (arg2), "=c" (arg3), "=b" (ebx)
> > : "0" (irq), "1" (desc), "2" (regs), "3" (isp),
> > "D" (desc->handle_irq)
> > : "memory", "cc"
> > );
> >
> >In my case, the IRQ is 0xdb = 219, which is an MSI interrupt for
> >libata (the AHCI SATA controller, presumably). The exception happens
> >just after the SATA driver has probed all the hard disks.
> >
> >So it seems to me that the suspects are 1) sata, or 2) MSI. I'll try
> >turning off MSI to see if it helps.
>
> Yes, that fixed it; with MSI disabled I can boot successfully.
>
> : ezr:pts/0; cd hg/linux-2.6/patches/broken-out/
> : ezr:pts/0; ls *msi* | wc -l
> 23
>
> Hm, where to start...

There are 9 MSI patches in my tree that you can just remove. They were
just recently (a few hours ago) replaced with a total rewrite due to a
number of different problems that were found. So I'd suggest just
waiting till the next -mm release to see if it works properly or not.

thanks,

greg k-h

--
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