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Sun, 22 Mar 2026 09:04:12 -0700 (PDT) Received: from junjungu-PC.localdomain ([223.167.147.240]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-82b03bc66b3sm7381045b3a.21.2026.03.22.09.04.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 22 Mar 2026 09:04:11 -0700 (PDT) From: Felix Gu Date: Mon, 23 Mar 2026 00:04:08 +0800 Subject: [PATCH] edac: versalnet: Fix device_node leak in mc_probe() Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260323-versalnet-v1-1-4ab3012635ef@gmail.com> X-B4-Tracking: v=1; b=H4sIAPcSwGkC/6tWKk4tykwtVrJSqFYqSi3LLM7MzwNyDHUUlJIzE vPSU3UzU4B8JSMDIzMDYyMj3bLUouLEnLzUEt3UVJO01NSkZCMLg1QloPqCotS0zAqwWdGxtbU Adq6SulsAAAA= X-Change-ID: 20260322-versalnet-ee4feebc280e To: Shubhrajyoti Datta , Borislav Petkov , Tony Luck Cc: linux-edac@vger.kernel.org, linux-kernel@vger.kernel.org, Felix Gu X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1774195450; l=1423; i=ustc.gu@gmail.com; h=from:subject:message-id; bh=cSma+RNhKpwiwXY2OWkOn5Im7/3nZ04i8GCn8P//2R0=; b=RQcBszhzjsA1+7puHMsABQ8/Mu4rzdakNPwBNBBUf9TSuXhfb37HvfFpjEAGrDSGxjP2MAQJU BefTxxcdrccDhdvCj6+QhIj+9cAEvd4TKLypKRk9k6v6NETBKXSGdml X-Developer-Key: i=ustc.gu@gmail.com; a=ed25519; pk=fjUXwmjchVN7Ja6KGP55IXOzFeCl9edaHoQIEUA+/hw= of_parse_phandle() returns a device_node reference that must be released with of_node_put(). The original code never freed r5_core_node on any exit path, causing a memory leak. Fix this by using the automatic cleanup attribute __free(device_node) which ensures of_node_put() is called when the variable goes out of scope. Fixes: d5fe2fec6c40 ("EDAC: Add a driver for the AMD Versal NET DDR control= ler") Signed-off-by: Felix Gu --- drivers/edac/versalnet_edac.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/edac/versalnet_edac.c b/drivers/edac/versalnet_edac.c index 0b47ed7fed63..915bcd6166f7 100644 --- a/drivers/edac/versalnet_edac.c +++ b/drivers/edac/versalnet_edac.c @@ -888,12 +888,12 @@ static void remove_versalnet(struct mc_priv *priv) =20 static int mc_probe(struct platform_device *pdev) { - struct device_node *r5_core_node; struct mc_priv *priv; struct rproc *rp; int rc; =20 - r5_core_node =3D of_parse_phandle(pdev->dev.of_node, "amd,rproc", 0); + struct device_node *r5_core_node __free(device_node) =3D + of_parse_phandle(pdev->dev.of_node, "amd,rproc", 0); if (!r5_core_node) { dev_err(&pdev->dev, "amd,rproc: invalid phandle\n"); return -EINVAL; --- base-commit: 785f0eb2f85decbe7c1ef9ae922931f0194ffc2e change-id: 20260322-versalnet-ee4feebc280e Best regards, --=20 Felix Gu