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 A30713BED63; Tue, 21 Jul 2026 22:11:49 +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=1784671910; cv=none; b=j5rsjYdOxVyOfx2F1rP8QeXagAhUGgMseYAdc5QoWQe86dPOXlU0S5bJMhJsoxwO3JA39r/rYsV1O2mmxhxGvkHjMhBSYDS8S+CEuCToA9ruZX7B3dcH5f5Slqg0a5HuA/ccEqDlxFW4tFXwvBTBpO83ULanCugtfFdg3ZUe7Bo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784671910; c=relaxed/simple; bh=dd7951R+yJBO/i40WMt5Ksigxk5t+39Nxa3h6yceQSA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Ity5zxZO+vLXITSlLCvhcJxqUUDrMdUPj9reD28IwtMXxVzobAGAnVfOTSDG7x4iCsVpD8CcrsCDmtR5q5Q746Bxo90XbVPIW2fNraJKqWvzE4swR14PImQothehLZqGP5h9jUriX2bfLIG/dZPF4tu53z8+3MMPHIYisaPsYz0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=KvnkfeIk; 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="KvnkfeIk" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 13A7C1F00A3A; Tue, 21 Jul 2026 22:11:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784671909; bh=i/FT7VKgvjQJC5hxx5B3I+C4BuTjFIM+FjzmDcFhtLA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=KvnkfeIk6DUF/OpuSFNglBPVoUqSVuAfVsyNpZ84gPAvGxf5qlnOskgFGGhJ6BY5g JjSSzQi5XtjEgpj9foOMXyW2eVGT1NImG5+WOk9XpbgSyeHUiv7v2zWwTDxkwP3zjF W/s5AxTlOLxCDb6djqdXd0WTzKhOYZvM6Rd3hmwo= 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 5.15 425/843] PCI: mediatek: Fix possible truncation in mtk_pcie_parse_port() Date: Tue, 21 Jul 2026 17:21:00 +0200 Message-ID: <20260721152415.594756207@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721152405.946368001@linuxfoundation.org> References: <20260721152405.946368001@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 5.15-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 61bd2052bb05a8..32b58d8a32edce 100644 --- a/drivers/pci/controller/pcie-mediatek.c +++ b/drivers/pci/controller/pcie-mediatek.c @@ -924,7 +924,7 @@ 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