On Thursday, 21 of August 2008, Jeremy Fitzhardinge wrote: > Rafał Miłecki wrote: > > I added full dmesg 5 minutes after adding grepped: > > http://bugzilla.kernel.org/attachment.cgi?id=17331 > > > > OK, I think I see the problem (pasted from bugzilla comment): > > >>>> > Some notes as I pick through all the evidence so far: > > - the crash is specifically because there are reserved bits set in the pmd > - the pmd is b02a00043a6001a3 in both cases > - the vaddr is ffff88013a600000 in the first crash, and > ffff81013a6d1c00 in the second > corresponding to the same large-page pmd mapping of phys page 0x13a600000 > - this maps to e820 entry > BIOS-e820: 0000000100000000 - 0000000140000000 (usable) > - the corresponding boot-time mapping is > > init_memory_mapping > 0100000000 - 0140000000 page 2M > kernel direct mapping tables up to 140000000 @ b000-11000 > ^^^^^^^^^^ > addr 100000000 reusing pgd 201880 0000000000202063 > last_map_addr: 140000000 end: 140000000 > > !!! and the memory allocated for this pagetable is: > #5 [0000008000 - 000000b000] PGTABLE ==> [0000008000 - 000000b000] > #6 [000000b000 - 000000c000] PGTABLE ==> [000000b000 - 000000c000] > ^^^^^^^^^^^^^^^^^^^^^^^ > > IOW, it's mapping using b000-11000, but it has only reserved b000 - c000 > > Also, this is right in the middle of the ISA area, which seems risky. > <<<< > > Bug #11237 shows the same symptom, so I'm pretty confident they're dups now. I have marked #11313 as a duplicate of #11237. Please use the latter one from now on. Thanks, Rafael -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
