From nobody Fri Dec 19 20:13:16 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 120FB183B8D; Sun, 24 Mar 2024 23:50:57 +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=1711324258; cv=none; b=fVD7lVfCWuTiboUGhYdaoWkx9Vi2ua++PLRLubkh+zDagHtSJbZyLC+ezx/OzXxe3Plm4lZLndG+L1rCTLwcX4yWnznVkpjvKS5hXztHsaPCzWYM7JW3eExu7aS5rnQBaFzBX2VUyi5PNOnTSiSo3uj4wCgiG+MaqnOcz9ixbTI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711324258; c=relaxed/simple; bh=/7/1b9rks8twEubNpUt8qsAQs2IeCT+nNQFQ6FdH8sI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=SqFSndJu1U1xFEklDdE3SHDYbUVj4W/+UrMjlFKNy+OJqapAQKBRRZUGv/xSWki7oxcckbyLV9IsX0xphGclR+3aUlCNSXojGxv1+6pjkextB7cHoH6noiXvA7QpdG5qDtG5x51lW7z+aUy9XPMoT51rm0Jnzwzf30ugbGKCnBk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=BVDbu7rZ; 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="BVDbu7rZ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4B548C43394; Sun, 24 Mar 2024 23:50:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711324256; bh=/7/1b9rks8twEubNpUt8qsAQs2IeCT+nNQFQ6FdH8sI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BVDbu7rZML13csxl7Y+8xuHjEClBj/izOWzwipHX40Xsa0z/cG/UY1FAIK2B2pEqG Oj6Ju6QZXhjyHRiTKHN0qk3BnLZ8c9/a9iSFbFx5QdIKcstH1ieT9RB6bDSJhcAU/1 WZr/MT9SsK9Ae6ddTLJ6I4mUudAB5fRpB59/AAfI1mda4hv5iMpm7ty4ykwIijT8RD /QGRhnbEvBxVCemQ8i6dcl/W0NcJxQUDY7Ylf635OWyKbNaikFoyGxes1jf/MFcITy L8yXCwjdaryU2exfZdxovTflQI2Nyf69ES7+k+AvgUR8SZY/cHMRHS3Hq1G+e2Iaxg 7X47nj1JMXJTQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Anastasia Belova , Viresh Kumar , Sasha Levin Subject: [PATCH 4.19 037/148] cpufreq: brcmstb-avs-cpufreq: add check for cpufreq_cpu_get's return value Date: Sun, 24 Mar 2024 19:48:21 -0400 Message-ID: <20240324235012.1356413-38-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240324235012.1356413-1-sashal@kernel.org> References: <20240324235012.1356413-1-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