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 AC3C43A7F47; Sat, 12 Sep 2026 18:53:19 +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=1789239200; cv=none; b=QY23fyAYuqrXdxBStlRcB2/YxLnQFyRziUxXKnBOiSe9Crwk5MTBO08Ozc3i6nMcIuyBNVHmME/bKy8bU10eBjriGgFfcV0AEboR+bz1d40kj0NozeEymCE/iHHXOJestmcTIcuOUjg7kZqvb4qmOzp8z+H/kzppUdUZXc0beyM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789239200; c=relaxed/simple; bh=oEezBGrjfvZs2NTfT+VKERbQPteVYGlD7GmgKWkRW50=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=SNq9fzTYZpzDka8+3CyCI4+ZjGP5NkxdLOqOMy8f/c8Pl7Rcf740n4NSSrNCb6fE4yg8Sw4Cgtm6pzRVRvy+dY9wUzh/bT5gYMD3sHWyTn8KPBUTsHcVeIGJVKfmqAxq4Y81qs/h5GbIY1qquMSUs5V0cnSfHU1LDFjeqdzCvYc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=E9cl/UP2; 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="E9cl/UP2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CB0181F000FF; Sat, 12 Sep 2026 18:53:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789239199; bh=kLFz6Q/rrEzdZcoU3KU91Pmm/6w2r1zPDy/hYN4I7kA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=E9cl/UP29MSRv8nFnVDdIjXp1DzVE0zlc7pdTR6OeZaFKNwQ5zJOoY6KDNasBuMG6 Wb+ubuACSXDgBsrmvbY5Bm9t4BafcQ8GOjJcd6F9L/yXrjqIAVnZ10oUFUVoatXMKa 6tBIgZP0c7STKffQjEqpMHxEXfo4QpqgxNPUktSs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, longlong yan , Brian Masney , Sasha Levin Subject: [PATCH 5.15 615/935] clk/x86: pmc_atom: add kasprintf return value check Date: Sat, 12 Sep 2026 09:00:45 +0200 Message-ID: <20260912065540.945749167@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065526.833703348@linuxfoundation.org> References: <20260912065526.833703348@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-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: longlong yan [ Upstream commit 18e9d14cbac33db1c1fb933c26a736eef53dd538 ] The kasprintf() function returns NULL on memory allocation failure, but the code in plt_clk_register() was not checking this return value. If kasprintf fails, init.name would be NULL and could cause NULL pointer dereference when clkdev_hw_create() uses it. Add proper error checking for the kasprintf() return value and return ERR_PTR(-ENOMEM) on failure. Fixes: 1141d9d08184 ("clk: x86: Add Atom PMC platform clocks") Signed-off-by: longlong yan Reviewed-by: Brian Masney Signed-off-by: Brian Masney Signed-off-by: Sasha Levin --- drivers/clk/x86/clk-pmc-atom.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/clk/x86/clk-pmc-atom.c b/drivers/clk/x86/clk-pmc-atom.c index e746e3f8d05a9..00e8f24ff1329 100644 --- a/drivers/clk/x86/clk-pmc-atom.c +++ b/drivers/clk/x86/clk-pmc-atom.c @@ -171,6 +171,9 @@ static struct clk_plt *plt_clk_register(struct platform_device *pdev, int id, return ERR_PTR(-ENOMEM); init.name = kasprintf(GFP_KERNEL, "%s_%d", PLT_CLK_NAME_BASE, id); + if (!init.name) + return ERR_PTR(-ENOMEM); + init.ops = &plt_clk_ops; init.flags = 0; init.parent_names = parent_names; -- 2.53.0