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-rw-r--r--arch/x86/mm/fault.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index 2b97525246d4..0e883364abb5 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -378,10 +378,12 @@ static noinline __kprobes int vmalloc_fault(unsigned long address)
378 if (pgd_none(*pgd_ref)) 378 if (pgd_none(*pgd_ref))
379 return -1; 379 return -1;
380 380
381 if (pgd_none(*pgd)) 381 if (pgd_none(*pgd)) {
382 set_pgd(pgd, *pgd_ref); 382 set_pgd(pgd, *pgd_ref);
383 else 383 arch_flush_lazy_mmu_mode();
384 } else {
384 BUG_ON(pgd_page_vaddr(*pgd) != pgd_page_vaddr(*pgd_ref)); 385 BUG_ON(pgd_page_vaddr(*pgd) != pgd_page_vaddr(*pgd_ref));
386 }
385 387
386 /* 388 /*
387 * Below here mismatches are bugs because these lower tables 389 * Below here mismatches are bugs because these lower tables