lkml.org 
[lkml]   [2022]   [Nov]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] drm/msm/dpu: check for null return of devm_kzalloc() in dpu_writeback_init()
Date
Because of the possilble failure of devm_kzalloc(), dpu_wb_conn might
be NULL and will cause null pointer derefrence later.

Therefore, it might be better to check it and directly return -ENOMEM.

Fixes: 77b001acdcfe ("drm/msm/dpu: add the writeback connector layer")
Signed-off-by: Hui Tang <tanghui20@huawei.com>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c
index 088ec990a2f2..2a5a68366582 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c
@@ -70,6 +70,8 @@ int dpu_writeback_init(struct drm_device *dev, struct drm_encoder *enc,
int rc = 0;

dpu_wb_conn = devm_kzalloc(dev->dev, sizeof(*dpu_wb_conn), GFP_KERNEL);
+ if (!dpu_wb_conn)
+ return -ENOMEM;

drm_connector_helper_add(&dpu_wb_conn->base.base, &dpu_wb_conn_helper_funcs);

--
2.17.1
\
 
 \ /
  Last update: 2022-11-19 06:59    [W:0.192 / U:0.064 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site