linux-kernel - [PATCH] memory: renesas-rpc-if: fix platform-device leak in error path

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Thu,  3 Mar 2022 19:06:32 +0100
From:   Johan Hovold <johan@...nel.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Cc:     linux-kernel@...r.kernel.org, Johan Hovold <johan@...nel.org>,
        stable@...r.kernel.org,
        Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Subject: [PATCH] memory: renesas-rpc-if: fix platform-device leak in error path

Make sure to free the flash platform device in the event that
registration fails during probe.

Fixes: ca7d8b980b67 ("memory: add Renesas RPC-IF driver")
Cc: stable@...r.kernel.org      # 5.8
Cc: Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Signed-off-by: Johan Hovold <johan@...nel.org>
---
 drivers/memory/renesas-rpc-if.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/memory/renesas-rpc-if.c b/drivers/memory/renesas-rpc-if.c
index e4cc64f56019..2e545f473cc6 100644
--- a/drivers/memory/renesas-rpc-if.c
+++ b/drivers/memory/renesas-rpc-if.c
@@ -651,6 +651,7 @@ static int rpcif_probe(struct platform_device *pdev)
 	struct platform_device *vdev;
 	struct device_node *flash;
 	const char *name;
+	int ret;
 
 	flash = of_get_next_child(pdev->dev.of_node, NULL);
 	if (!flash) {
@@ -674,7 +675,14 @@ static int rpcif_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	vdev->dev.parent = &pdev->dev;
 	platform_set_drvdata(pdev, vdev);
-	return platform_device_add(vdev);
+
+	ret = platform_device_add(vdev);
+	if (ret) {
+		platform_device_put(vdev);
+		return ret;
+	}
+
+	return 0;
 }
 
 static int rpcif_remove(struct platform_device *pdev)
-- 
2.34.1