diff options
| -rw-r--r-- | arch/arm64/mm/pageattr.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/arm64/mm/pageattr.c b/arch/arm64/mm/pageattr.c index f0e784b963e6..7176ff39cb87 100644 --- a/arch/arm64/mm/pageattr.c +++ b/arch/arm64/mm/pageattr.c @@ -171,7 +171,8 @@ static int change_memory_common(unsigned long addr, int numpages, */ area = find_vm_area((void *)addr); if (!area || - end > (unsigned long)kasan_reset_tag(area->addr) + area->size || + ((unsigned long)kasan_reset_tag((void *)end) > + (unsigned long)kasan_reset_tag(area->addr) + area->size) || ((area->flags & (VM_ALLOC | VM_ALLOW_HUGE_VMAP)) != VM_ALLOC)) return -EINVAL; @@ -184,7 +185,8 @@ static int change_memory_common(unsigned long addr, int numpages, */ if (rodata_full && (pgprot_val(set_mask) == PTE_RDONLY || pgprot_val(clear_mask) == PTE_RDONLY)) { - unsigned long idx = (start - (unsigned long)kasan_reset_tag(area->addr)) + unsigned long idx = ((unsigned long)kasan_reset_tag((void *)start) - + (unsigned long)kasan_reset_tag(area->addr)) >> PAGE_SHIFT; for (; numpages; idx++, numpages--) { ret = __change_memory_common((u64)page_address(area->pages[idx]), |