Since kmalloc can be failed in memory pressure,
check and return error code
otherwise NULL deference could be happened
Signed-off-by: Insu Yun <wuninsu at gmail.com>
---
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
