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 BDB1312882C; Sun, 24 Mar 2024 22:36:17 +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=1711319777; cv=none; b=q2RJmtprufQAq3p+Z758PXV/IF0Ra4n80Qrf171ZqVTn/bqMiDWcCWwtr6D50nAcLneahP5Rne4JCOxPFl/Mdmx2hsWP/61i+ALBqLr8PDMx/opgZ3R7+A47ieu1Yumk7Fca6Y/LqmL7k0CqHE1+10pxhxzxzOVYShb8pqSaOvQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711319777; c=relaxed/simple; bh=RiNJz9zlSFXEx8zYJSB1a4ND7aEOOQrZQdR/XEnpxN4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=B+3m2zueTwVTSpJWkDtZAjaEFgO9l9Bb2FiRww3AxcrD7nuT00YOjR+WTzLXDvnhkQ3UvEkpUn5nuudpJ1KO1IfKdQdmW3ve0B7/P0q573Gq4idq+PrYj/Gi22VpZBylgF1Lfc5oCxNXvPwLNRTJHt6JEAFXKTlIZR6hlXBW/cg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=JXJB8BWJ; 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="JXJB8BWJ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EE9DDC433C7; Sun, 24 Mar 2024 22:36:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711319777; bh=RiNJz9zlSFXEx8zYJSB1a4ND7aEOOQrZQdR/XEnpxN4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JXJB8BWJadwdBs+vSLJdprGNC94d8AaJqVrNUp7q0YWULHfRJko7ii7qftWICISh2 zfsuApO1k4V8IBAP5QtZeKr+l/jc2pbHvmAdboUqM9axfNdl/hG+SiFXw3Rnm+AmTT APFDBN6yS06fVzvn1h2gP5sqfck1aDffcoBWq75DpynQruk3ny0gWbFl2XGKtWkW4N WKzS6TflnJjaYlhWTIaXcgbH8Petsog92UWTEUASTCy/SG/rUkxUPemIoO+XoQCYT/ hSlVQ4QeiaNH0IrIE9l3I6ug8eXnMyPXJePnhXznlhnqBoQCQnZ/aDYoxyJMoNyMFG Ow4qSXuLRk8GA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Anastasia Belova , Viresh Kumar , Sasha Levin Subject: [PATCH 6.8 079/715] cpufreq: brcmstb-avs-cpufreq: add check for cpufreq_cpu_get's return value Date: Sun, 24 Mar 2024 18:24:18 -0400 Message-ID: <20240324223455.1342824-80-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240324223455.1342824-1-sashal@kernel.org> References: <20240324223455.1342824-1-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: 8bit 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/brcmstb-avs-cpufreq.c index 35fb3a559ea97..1a1857b0a6f48 100644 --- a/drivers/cpufreq/brcmstb-avs-cpufreq.c +++ b/drivers/cpufreq/brcmstb-avs-cpufreq.c @@ -481,6 +481,8 @@ 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 = cpufreq_cpu_get(cpu); + if (!policy) + return 0; struct private_data *priv = policy->driver_data; cpufreq_cpu_put(policy); -- 2.43.0