diff options
Diffstat (limited to 'drivers/gpu/drm/arm')
| -rw-r--r-- | drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c b/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c index 3ca461eb0a24..3cb34d03f7f8 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c @@ -4,6 +4,8 @@ * Author: James.Qian.Wang <james.qian.wang@arm.com> * */ +#include <linux/overflow.h> + #include <drm/drm_device.h> #include <drm/drm_fb_dma_helper.h> #include <drm/drm_gem.h> @@ -93,7 +95,9 @@ komeda_fb_afbc_size_check(struct komeda_fb *kfb, struct drm_file *file, kfb->afbc_size = kfb->offset_payload + n_blocks * ALIGN(bpp * AFBC_SUPERBLK_PIXELS / 8, AFBC_SUPERBLK_ALIGNMENT); - min_size = kfb->afbc_size + fb->offsets[0]; + if (check_add_overflow(kfb->afbc_size, fb->offsets[0], &min_size)) { + goto check_failed; + } if (min_size > obj->size) { DRM_DEBUG_KMS("afbc size check failed, obj_size: 0x%zx. min_size 0x%llx.\n", obj->size, min_size); |