From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, =?UTF-8?q?Michel=20D=C3=A4nzer?= , Alex Deucher Subject: [PATCH 4.17 23/56] drm: Use kvzalloc for allocating blob property memory Date: Tue, 10 Jul 2018 20:25:05 +0200 Message-Id: <20180710182504.780939498@linuxfoundation.org> In-Reply-To: <20180710182503.544433950@linuxfoundation.org> References: <20180710182503.544433950@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: 4.17-stable review patch. If anyone has any objections, please let me know. ------------------ From: Michel Dänzer 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 Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/msgid/20180629142710.2069-1-michel@daenzer.net Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- 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); }