4.17-stable review patch. If anyone has any objections, please let me know.
------------------ From: Michel Dänzer <[email protected]> commit 718b5406cd76f1aa6434311241b7febf0e8571ff upstream. The property size may be controlled by userspace, can be large (I've seen failure with order 4, i.e. 16 pages / 64 KB) and doesn't need to be physically contiguous. Signed-off-by: Michel Dänzer <[email protected]> Reviewed-by: Alex Deucher <[email protected]> Signed-off-by: Alex Deucher <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected] Cc: [email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/gpu/drm/drm_property.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/drivers/gpu/drm/drm_property.c +++ b/drivers/gpu/drm/drm_property.c @@ -533,7 +533,7 @@ static void drm_property_free_blob(struc drm_mode_object_unregister(blob->dev, &blob->base); - kfree(blob); + kvfree(blob); } /** @@ -560,7 +560,7 @@ drm_property_create_blob(struct drm_devi if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob)) return ERR_PTR(-EINVAL); - blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL); + blob = kvzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL); if (!blob) return ERR_PTR(-ENOMEM); @@ -577,7 +577,7 @@ drm_property_create_blob(struct drm_devi ret = __drm_mode_object_add(dev, &blob->base, DRM_MODE_OBJECT_BLOB, true, drm_property_free_blob); if (ret) { - kfree(blob); + kvfree(blob); return ERR_PTR(-EINVAL); }
