Date: Fri, 18 Jan 2008 16:48:10 +0000 From: Pete French <petefrench@ticketswitch.com> To: jhb@freebsd.org Cc: freebsd-stable@freebsd.org Subject: Re: panic: vm_fault: fault on nofualt entry, addr: 81423000 Message-ID: <E1JFuO2-0000PF-KE@dilbert.ticketswitch.com> In-Reply-To: <200801181003.24092.jhb@freebsd.org>
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> So it appears to be dying here:
>
> (gdb) l *madt_probe+0x119
> 0xc06e7c69 is in madt_probe (/usr/src/sys/i386/acpica/madt.c:241).
> 236 if (xsdt == NULL) {
> 237 if (bootverbose)
> 238 printf("MADT: Failed to map XSDT\n");
> 239 return (ENXIO);
> 240 }
> 241 count = (xsdt->Length - sizeof(ACPI_TABLE_HEADER)) /
> 242 sizeof(UINT64);
> 243 for (i = 0; i < count; i++)
> 244 if (madt_probe_table(xsdt->TableOffsetEntry[i]))
> 245 break;
>
> where it reads 'xsdt->Length'. xsdt was just mapped into a temporary part of
> KVA (used for kernel dumps) a few lines earlier:
O.K., that is interesting, because my source code doesnt look like thiat,
mine uses 'xsdt->Header.Length' instead of 'xsdt->Length' - is that
code above from 7.0 ?
> You can try adding some printfs to see what the values of 'rsdp->XsdtPhysicalAddress' and
> 'xsdt' after the call to madt_map_table() are. Actually, try this perhaps:
Thanks for the patch - it didn;t help matters unfortunately, but I am
adding some printfs on xsdt itself and also rsdp->XsdtPhysicalAddress to
see what we get.
Will build a new kernel and let you know.
cheers,
-pete.
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