Re: 2.6.18-rc5-mm1

Jeremy Fitzhardinge
2006-09-02T08:37:19Z

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...

J

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