From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 2F60B215787; Mon, 31 Mar 2025 14:36:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743431797; cv=none; b=bgdnXsOvRHDtH7DMk8dmJSwmJkT32YwqEjyBnNl6NpTkCTUTnlhVZ7ftB8HwMj+Covcgvxkl1L50jrW+FF5cMnzF5SaGRvXceUTFP156epIb9TvpJA39htgmxZdP0FSGB2QZaDBJeFqetAfXHV9O74A+QhXMY5gF7SVuFJEuSoM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743431797; c=relaxed/simple; bh=doh+7ARyEYWjZJvgKfbqcxfkqsBHv0qsRf5JId0INjw=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=KPFRYGMaNSGcectNvQqrxlIunHJ2MYTLTYc6cwgbpi32KYsFGzK/4YvIL+ZaakwGhi82T8pkuJRYmE7KQ/Xvtxx91fauKAWOGhMddZMgD+cw1JxK/yKmXKL5G0O0UJTa3lPMPa2WQEMSfq8bfCq49d9gHV3+TWooKGRfNaWavr0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ONngiiDw; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ONngiiDw" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C44A8C4CEE9; Mon, 31 Mar 2025 14:36:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1743431797; bh=doh+7ARyEYWjZJvgKfbqcxfkqsBHv0qsRf5JId0INjw=; h=From:To:Cc:Subject:Date:From; b=ONngiiDwbRoEUhdXZyNkRSqkmwstJzEuTolFTeaIdutfYdXq+YE6O1jTIBIYLxX7s NEgJIRO0JganFq8bEXLjyIiSvp+YBYbfplHT1bu7PJY06BOmPwVYLnQSZNlQpB/bO4 BEso+C3blIEs10Ze4A6zEY14d7dxuOcjcaLOHCjPHYXYKaSLbHA9U5g7x968QCqM2i aK6dMhz6Q2eWinnk0YAbu9fgtTl77tgZrjFheSwBSkNK4QzriAX/cWZlhJJj5LrzcG JzgyTtm8LoTZKPWWHvXTnZJJMqRLT8ZGVkU3FlOJsWqPy7zF4jzawd3fw5FyJ8jvV1 5/UI6prBItspg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Zhongqiu Han , Shuah Khan , Sasha Levin , trenn@suse.com, shuah@kernel.org, jwyatt@redhat.com, jkacur@redhat.com, peng.fan@nxp.com, linux-pm@vger.kernel.org Subject: [PATCH AUTOSEL 6.1 1/6] pm: cpupower: bench: Prevent NULL dereference on malloc failure Date: Mon, 31 Mar 2025 10:36:27 -0400 Message-Id: <20250331143634.1686409-1-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.1.132 Content-Transfer-Encoding: 8bit From: Zhongqiu Han [ Upstream commit 208baa3ec9043a664d9acfb8174b332e6b17fb69 ] If malloc returns NULL due to low memory, 'config' pointer can be NULL. Add a check to prevent NULL dereference. Link: https://lore.kernel.org/r/20250219122715.3892223-1-quic_zhonhan@quicinc.com Signed-off-by: Zhongqiu Han Signed-off-by: Shuah Khan Signed-off-by: Sasha Levin --- tools/power/cpupower/bench/parse.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/power/cpupower/bench/parse.c b/tools/power/cpupower/bench/parse.c index e63dc11fa3a53..48e25be6e1635 100644 --- a/tools/power/cpupower/bench/parse.c +++ b/tools/power/cpupower/bench/parse.c @@ -120,6 +120,10 @@ FILE *prepare_output(const char *dirname) struct config *prepare_default_config() { struct config *config = malloc(sizeof(struct config)); + if (!config) { + perror("malloc"); + return NULL; + } dprintf("loading defaults\n"); -- 2.39.5