diff options
| -rw-r--r-- | arch/sparc/mm/init_64.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c index 7f8238f4f954..9ed22b571a05 100644 --- a/arch/sparc/mm/init_64.c +++ b/arch/sparc/mm/init_64.c @@ -308,6 +308,10 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t * tsb_index = MM_TSB_BASE; tsb_hash_shift = PAGE_SHIFT; + /* Don't insert a non-valid PTE into the TSB, we'll deadlock. */ + if (!(pte_val(pte) & _PAGE_VALID)) + return; + spin_lock_irqsave(&mm->context.lock, flags); #ifdef CONFIG_HUGETLB_PAGE |