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x86/mm/pageattr: Always dump the right page table in an oops

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Now that we have EFI-specific page tables we need to lookup the pgd when
dumping those page tables, rather than assuming that swapper_pgdir is
the current pgdir.

Remove the double underscore prefix, which is usually reserved for
static functions.

Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
This commit is contained in:
Matt Fleming
2013-12-06 21:13:04 +00:00
parent 993c30a04e
commit 426e34cc4f
3 changed files with 16 additions and 5 deletions
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7
arch/x86/mm/fault.c
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@@ -584,8 +584,13 @@ show_fault_oops(struct pt_regs *regs, unsigned long error_code,
if (error_code & PF_INSTR) {
unsigned int level;
pgd_t *pgd;
pte_t *pte;
pte_t *pte = lookup_address(address, &level);
pgd = __va(read_cr3() & PHYSICAL_PAGE_MASK);
pgd += pgd_index(address);
pte = lookup_address_in_pgd(pgd, address, &level);
if (pte && pte_present(*pte) && !pte_exec(*pte))
printk(nx_warning, from_kuid(&init_user_ns, current_uid()));