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
--
VGER BF report: H 0
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