rpmsg: glink: Add check for kstrdup

[ 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>

diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c
index 67e7664efb0dc213463833b0d87d6c0cc2a122d8..cb8f65c1d4e3b5c6becaf82549d635be5cd32ac3 100644 (file)
--- a/drivers/rpmsg/qcom_glink_native.c
+++ b/drivers/rpmsg/qcom_glink_native.c
@@ -224,6 +224,10 @@ 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);