Messages in this thread Patch in this message | | | Date | Thu, 23 Jan 2014 23:48:57 +0100 | From | Borislav Petkov <> | Subject | Re: [BUG] Linux 3.14 fails to boot with new EFI changes |
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On Thu, Jan 23, 2014 at 04:11:08PM -0600, Alex Thorlton wrote: > We've been hitting the following bug in the latest kernel, during boot:
Can you merge
git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi.git#next
into your tree, enable CONFIG_EFI_PGT_DUMP, apply the debugging patch below, catch the whole dmesg and send it to me (privately is fine too)?
Thanks.
--- diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index f35c66c5959a..07712b9b4263 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -348,7 +348,12 @@ static void __init __init_extra_mapping(unsigned long phys, unsigned long size, _PAGE_USER)); } pmd = pmd_offset(pud, phys); - BUG_ON(!pmd_none(*pmd)); + if (!pmd_none(*pmd)) { + pr_err("phys: 0x%lx, PGD: 0x%lx, PUD: 0x%lx, PMD: 0x%lx\n", + phys, pgd_val(*pgd), pud_val(*pud), pmd_val(*pmd)); + BUG(); + } + set_pmd(pmd, __pmd(phys | pgprot_val(prot))); } } -- -- Regards/Gruss, Boris.
Sent from a fat crate under my desk. Formatting is fine. --
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