5.4-stable review patch. If anyone has any objections, please let me know.
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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 11ba44dc551e4..f65db95e78aa4 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);