From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 7B7F23859EE; Tue, 21 Jul 2026 18:09:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784657344; cv=none; b=OdG0tHcxyMTyCzBza2957ZjFkAk/Nw+mVNhvlkVFAMtJrMFBFco8lifCuv5BtAtNonkZMsEQyV0SoOCrNc/7pwZdygpHO8Pc2QEb+7aFFjIJVVhrWndW+sNhJIWZxIqN8cDwrOVJtSGBBxiDd42+A0VeOY/09BA5pmR0fFo3vlo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784657344; c=relaxed/simple; bh=8La4GVnqOQfWcdIsCC1Fpr2Wu98DjqJQySp0FXo99QI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=sdBQKMXIqrPTrqbtSiyMooQSilF7WQqosaYHv91lBFFBprcXrgY53JbL4Ep1FdQ/yigZL1tWOwDYR8YAcXoeNIv9yDYj7llLRWKT0fYCujKDgrXZycotdHXmkLp649zc3tnfxNlyL/y211/glMVs7DP1Lk3COJbqiftSXyeK8B4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=hxdIpP1v; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="hxdIpP1v" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 155251F000E9; Tue, 21 Jul 2026 18:09:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784657343; bh=h71EzUV18/600109sFylDeD9kVdnhhALlvflPKNEHtU=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=hxdIpP1v0Pxl7MPmX1jgIdotnwaHGqUWQbUcszslQeuEgObXKWHTMfDDI1zVQ/x7L y7Bmrti94CJpANPQoeJoWvkTLvxy2aENP8UrK8pFIUrH5coWqPt+eE8SIo+2t05jSJ ZZIeMPGvDkIXaJacJvVHvpsh9lH3QDd43p0EyGyE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Ryder Lee , Manivannan Sadhasivam , Sasha Levin Subject: [PATCH 6.18 0728/1611] PCI: mediatek: Fix possible truncation in mtk_pcie_parse_port() Date: Tue, 21 Jul 2026 17:14:04 +0200 Message-ID: <20260721152531.756535973@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721152514.750365251@linuxfoundation.org> References: <20260721152514.750365251@linuxfoundation.org> User-Agent: quilt/0.69 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-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ryder Lee [ Upstream commit ab4a4043db1fcc4fd4c5745c5be8caf053502e29 ] As reported by the W=1 warning below, content of the 'name' variable might get truncated with the existing size of 10 bytes. Though it is not practically possible to exceed the 10 bytes size, increase it to 20 to silence the warning for a clean W=1 build: $ make W=1 drivers/pci/controller/pcie-mediatek.o CALL scripts/checksyscalls.sh DESCEND objtool INSTALL libsubcmd_headers CC drivers/pci/controller/pcie-mediatek.o drivers/pci/controller/pcie-mediatek.c: In function ‘mtk_pcie_parse_port’: drivers/pci/controller/pcie-mediatek.c:963:43: error: ‘%d’ directive output may be truncated writing between 1 and 10 bytes into a region of size 6 [-Werror=format-truncation=] 963 | snprintf(name, sizeof(name), "port%d", slot); | ^~ drivers/pci/controller/pcie-mediatek.c:963:38: note: directive argument in the range [0, 2147483647] 963 | snprintf(name, sizeof(name), "port%d", slot); | ^~~~~~~~ drivers/pci/controller/pcie-mediatek.c:963:9: note: ‘snprintf’ output between 6 and 15 bytes into a destination of size 10 963 | snprintf(name, sizeof(name), "port%d", slot); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Signed-off-by: Ryder Lee [mani: commit log] Signed-off-by: Manivannan Sadhasivam Link: https://patch.msgid.link/b835e360b42c5e0994f9301a34dbdf140a8d3ef5.1772493898.git.ryder.lee@mediatek.com Stable-dep-of: ebc1d9906894 ("PCI: mediatek: Use actual physical address instead of virt_to_phys()") Signed-off-by: Sasha Levin --- drivers/pci/controller/pcie-mediatek.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/controller/pcie-mediatek.c b/drivers/pci/controller/pcie-mediatek.c index 83880840b8764c..cd4be8ec0d03a3 100644 --- a/drivers/pci/controller/pcie-mediatek.c +++ b/drivers/pci/controller/pcie-mediatek.c @@ -920,7 +920,7 @@ static int mtk_pcie_parse_port(struct mtk_pcie *pcie, struct mtk_pcie_port *port; struct device *dev = pcie->dev; struct platform_device *pdev = to_platform_device(dev); - char name[10]; + char name[20]; int err; port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL); -- 2.53.0