From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C999615AE7 for ; Wed, 20 Sep 2023 12:16:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 50C6EC433CD; Wed, 20 Sep 2023 12:16:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1695212201; bh=wWMT8NIahWMdzD3fXVfuwfBS7hyxPB0Xor+nGxA7CwA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rf92kUAgkx2UQIt5LpisNy3Eda5AHCBXPr5Udan46YcQUk0chchygrGnR6vye+OpA tIRyN/nCAL63TcbbrwIqL1rZq2mjC+h1r7ZNDBNMATJ9rZsCqedHzVZ8echOaf0QCs Timkmswga+GcXM3Me00A8uIRyzfVV9+5Ov+H4cTE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jiasheng Jiang , Bjorn Andersson , Sasha Levin Subject: [PATCH 4.19 161/273] rpmsg: glink: Add check for kstrdup Date: Wed, 20 Sep 2023 13:30:01 +0200 Message-ID: <20230920112851.502638964@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230920112846.440597133@linuxfoundation.org> References: <20230920112846.440597133@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jiasheng Jiang [ 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 Link: https://lore.kernel.org/r/20230619030631.12361-1-jiasheng@iscas.ac.cn Signed-off-by: Bjorn Andersson Signed-off-by: Sasha Levin --- 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 940f099c2092f..02e39778d3c6b 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