[PATCH 5.10 260/406] rpmsg: glink: Add check for kstrdup

Greg Kroah-Hartman
2023-09-17T19:35:22Z

From: Jiasheng Jiang <jiasheng@iscas.ac.cn>

[ Upstream commit b5c9ee8296a3760760c7b5d2e305f91412adc795 ]

Add check for the return value of kstrdup() and return the error
if it fails in order to avoid NULL pointer dereference.

Fixes: b4f8e52b89f6 ("rpmsg: Introduce Qualcomm RPM glink driver")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20230619030631.12361-1-jiasheng@iscas.ac.cn
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/rpmsg/qcom_glink_native.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c
index 98b6d4c09c82c..e776d1bfc9767 100644
--- a/drivers/rpmsg/qcom_glink_native.c
+++ b/drivers/rpmsg/qcom_glink_native.c
@@ -222,6 +222,10 @@ static struct glink_channel *qcom_glink_alloc_channel(struct qcom_glink *glink,

channel->glink = glink;
channel->name = kstrdup(name, GFP_KERNEL);
+ if (!channel->name) {
+ kfree(channel);
+ return ERR_PTR(-ENOMEM);
+ }

init_completion(&channel->open_req);
init_completion(&channel->open_ack);
--
2.40.1