diff options
| -rw-r--r-- | mm/kasan/shadow.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/mm/kasan/shadow.c b/mm/kasan/shadow.c index 4d846d146d02..e2ceebf737ef 100644 --- a/mm/kasan/shadow.c +++ b/mm/kasan/shadow.c @@ -305,6 +305,8 @@ static int kasan_populate_vmalloc_pte(pte_t *ptep, unsigned long addr, pte_t pte; int index; + arch_leave_lazy_mmu_mode(); + index = PFN_DOWN(addr - data->start); page = data->pages[index]; __memset(page_to_virt(page), KASAN_VMALLOC_INVALID, PAGE_SIZE); @@ -317,6 +319,8 @@ static int kasan_populate_vmalloc_pte(pte_t *ptep, unsigned long addr, } spin_unlock(&init_mm.page_table_lock); + arch_enter_lazy_mmu_mode(); + return 0; } @@ -461,6 +465,8 @@ static int kasan_depopulate_vmalloc_pte(pte_t *ptep, unsigned long addr, pte_t pte; int none; + arch_leave_lazy_mmu_mode(); + spin_lock(&init_mm.page_table_lock); pte = ptep_get(ptep); none = pte_none(pte); @@ -471,6 +477,8 @@ static int kasan_depopulate_vmalloc_pte(pte_t *ptep, unsigned long addr, if (likely(!none)) __free_page(pfn_to_page(pte_pfn(pte))); + arch_enter_lazy_mmu_mode(); + return 0; } |