From mboxrd@z Thu Jan 1 00:00:00 1970 From: Insu Yun Subject: [PATCH] qxl: handling failed allocation Date: Thu, 4 Feb 2016 18:17:53 -0500 Message-ID: <1454627873-26358-1-git-send-email-wuninsu@gmail.com> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: airlied@linux.ie, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Cc: taesoo@gatech.edu, yeongjin.jang@gatech.edu, insu@gatech.edu, changwoo@gatech.edu, Insu Yun List-Id: dri-devel@lists.freedesktop.org Since kmalloc can be failed in memory pressure, check and return error code otherwise NULL deference could be happened Signed-off-by: Insu Yun --- drivers/gpu/drm/qxl/qxl_kms.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/qxl/qxl_kms.c b/drivers/gpu/drm/qxl/qxl_kms.c index b2977a1..02d26b3 100644 --- a/drivers/gpu/drm/qxl/qxl_kms.c +++ b/drivers/gpu/drm/qxl/qxl_kms.c @@ -221,6 +221,9 @@ static int qxl_device_init(struct qxl_device *qdev, kmalloc(qdev->n_mem_slots * sizeof(struct qxl_memslot), GFP_KERNEL); + if (!qdev->mem_slots) + return -ENOMEM; + idr_init(&qdev->release_idr); spin_lock_init(&qdev->release_idr_lock); spin_lock_init(&qdev->release_lock); -- 1.9.1