From nobody Fri Dec 19 21:48:08 2025 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 566732892BF; Sun, 24 Mar 2024 23:47:19 +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=1711324040; cv=none; b=qztxjFB3QacPciLg+puMwEtT/o/Yt8VlMtKxcjGugRrQNqF4vIEo7o1PMmDImJu20DukdDb6mrIryK53wLIY1fYWTnQafILjSfHzq1s6bncRPaYzjE1wot2e8XMU3ojDCHNl34Iasilqyc9Ht2D1aslB3sTqsgJyBCy7LLtmepI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711324040; c=relaxed/simple; bh=/7/1b9rks8twEubNpUt8qsAQs2IeCT+nNQFQ6FdH8sI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=pTOe3nHqr/F1DEir8A4OSS6N4MSJMM9gfnlETDm3XCOluu0aORmPmyubzGCnGLNQUzFWGFMhTapy1ZMn6bKuZZ2lu2gDvoih2HlDyGmz3cKBn2y9V5762G57H5HskS9KAFakK082+LhwZzZv1ELVG904T/kLD8mzzl5UN/Cqdjw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=b5Ift529; 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="b5Ift529" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 92922C43399; Sun, 24 Mar 2024 23:47:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711324039; bh=/7/1b9rks8twEubNpUt8qsAQs2IeCT+nNQFQ6FdH8sI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=b5Ift529qPMO+w4GK6j9ST7lPrONGI5MQKjCFHVDRj3xFaAAFHtVDz2fbSSCfP5ZP w73QMkGC+1CO8P/f/mKAMY4K8dJHK6ypS/PKaWudCrZKVIWzU85UW7HQ6mGswVG4fi ybZq/msTzyAu4kzdTMEub0KKntT/wcLxJdXH2IOXat2F88M6MQlBhiOpIUaL6XyjkH CBIEnqtQqnkgQZTouUE0UmkYbO9UcTWkjSg9mTJ2vzEWgYmcV+i9eez4ZqRegjLjRe +WhhxVvDbsf/XnTcR8JZXSYPP8GiSMhPnsZX0bnfkW6mpoR6W0pIe1WkNi0aMhJFjs Jg6ckSnHSbTAA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Anastasia Belova , Viresh Kumar , Sasha Levin Subject: [PATCH 5.4 040/183] cpufreq: brcmstb-avs-cpufreq: add check for cpufreq_cpu_get's return value Date: Sun, 24 Mar 2024 19:44:13 -0400 Message-ID: <20240324234638.1355609-41-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240324234638.1355609-1-sashal@kernel.org> References: <20240324234638.1355609-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Anastasia Belova [ Upstream commit f661017e6d326ee187db24194cabb013d81bc2a6 ] cpufreq_cpu_get may return NULL. To avoid NULL-dereference check it and return 0 in case of error. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: de322e085995 ("cpufreq: brcmstb-avs-cpufreq: AVS CPUfreq driver for = Broadcom STB SoCs") Signed-off-by: Anastasia Belova Signed-off-by: Viresh Kumar Signed-off-by: Sasha Levin --- drivers/cpufreq/brcmstb-avs-cpufreq.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/cpufreq/brcmstb-avs-cpufreq.c b/drivers/cpufreq/brcmst= b-avs-cpufreq.c index 541486217984b..1302e1900dcb1 100644 --- a/drivers/cpufreq/brcmstb-avs-cpufreq.c +++ b/drivers/cpufreq/brcmstb-avs-cpufreq.c @@ -457,6 +457,8 @@ static bool brcm_avs_is_firmware_loaded(struct private_= data *priv) static unsigned int brcm_avs_cpufreq_get(unsigned int cpu) { struct cpufreq_policy *policy =3D cpufreq_cpu_get(cpu); + if (!policy) + return 0; struct private_data *priv =3D policy->driver_data; =20 return brcm_avs_get_frequency(priv->base); --=20 2.43.0