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. J -- 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
