diff options
Diffstat (limited to 'drivers/video/gbefb.c')
| -rw-r--r-- | drivers/video/gbefb.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/video/gbefb.c b/drivers/video/gbefb.c index bda5e39..ceab370 100644 --- a/drivers/video/gbefb.c +++ b/drivers/video/gbefb.c @@ -1016,7 +1016,9 @@ static int gbefb_mmap(struct fb_info *info, /* check range */ if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) return -EINVAL; - if (offset + size > gbe_mem_size) + if (size > gbe_mem_size) + return -EINVAL; + if (offset > gbe_mem_size - size) return -EINVAL; /* remap using the fastest write-through mode on architecture */ |
