From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from SHSQR01.spreadtrum.com (unknown [222.66.158.135]) (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 17ADA3EF650; Fri, 10 Jul 2026 08:25:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=222.66.158.135 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783671956; cv=none; b=HWe4nxZDD2u9PYnhzvELImUYtw7CgICnsSDNqP7EWaCgBRaeybsGmWtaNnW4qNblHlz7KznLsKzmn/Cvam9laxhtjtQiV4IagU93PDa6I6ZU4BTyppc9eNPfS9q86u8YnoaZ9dXEdJ9xKVztkpYy+Yf6/zMQBGQFBYyhQagM2bE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783671956; c=relaxed/simple; bh=PGQxHoCamhkvyKv7L3qhCKlwwAlwklqGBQ+Swl9BfuQ=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=hZS5C0wFB7EbLT5DTXM0eDVT8F28ViNSp/TIFbVBfwsepLlWjHaxb2aCSfL2iAoX+VOH7R9xp1k9A+cQuztdlmcndNcfXOAR91YzYZw0KUhli3rKQjOR+LOwEoAldp6HPmN58Z/VH/iKQrWu0GuQcj8qDb4XRsx/CGejkgguMxc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=unisoc.com; spf=pass smtp.mailfrom=unisoc.com; dkim=pass (2048-bit key) header.d=unisoc.com header.i=@unisoc.com header.b=LCw4SI4V; arc=none smtp.client-ip=222.66.158.135 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=unisoc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=unisoc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=unisoc.com header.i=@unisoc.com header.b="LCw4SI4V" Received: from dlp.unisoc.com ([10.29.3.86]) by SHSQR01.spreadtrum.com with ESMTPS id 66A8PLtZ053463 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Fri, 10 Jul 2026 16:25:21 +0800 (+08) (envelope-from Xuewen.Yan@unisoc.com) Received: from SHDLP.spreadtrum.com (BJMBX01.spreadtrum.com [10.0.64.7]) by dlp.unisoc.com (SkyGuard) with ESMTPS id 4gxPyf6FLSz2S3kr9; Fri, 10 Jul 2026 16:24:58 +0800 (CST) Received: from BJ10918NBW01.spreadtrum.com (10.0.73.73) by BJMBX01.spreadtrum.com (10.0.64.7) with Microsoft SMTP Server (TLS) id 15.0.1497.48; Fri, 10 Jul 2026 16:25:20 +0800 From: Xuewen Yan To: , , , CC: , , , Subject: [RFC PATCH 2/2] PM: EM: Validate new_table in em_dev_update_perf_domain() Date: Fri, 10 Jul 2026 16:24:47 +0800 Message-ID: <20260710082447.5160-2-xuewen.yan@unisoc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20260710082447.5160-1-xuewen.yan@unisoc.com> References: <20260710082447.5160-1-xuewen.yan@unisoc.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: SHCAS01.spreadtrum.com (10.0.1.201) To BJMBX01.spreadtrum.com (10.0.64.7) X-MAIL:SHSQR01.spreadtrum.com 66A8PLtZ053463 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=unisoc.com; s=default; t=1783671938; bh=FtFWK67eFemJ8nOXJOQ+HYOeP+r+Wyz0kpClXRfvc0g=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=LCw4SI4VBmoNgpY8HNuAe4jneFocL6RAefBeDfef3izFpLTD0GtUoGWNjZRWFwGy6 Xx3+TYxW21eJ1Yj3W4oXxekmOv+orJE/Tzs8DRdgeCVQD2Bk5FZ7BIiE1GmLZTV8PO cTNL/01ieqRbKAaF0M71wRcg+WnIikd4mLiqS1g0KrEJSKavU7ro5r7o9P32l86EF6 wD+Ecvs9ZJphZtkQXX+J6HBd8ohMYEtSUqYMqDO6wIJ8eV5XHrQyco0iFSYYeD4abK 25mHIYtFbGigyR7R9q2MBObKM0wQTXf705Opr3ueNzKr6mcOLxEJl6vezPNvaSNNpy QPgSAeaCrOINg== Add an explicit check for the new_table parameter in em_dev_update_perf_domain() to ensure it is not NULL or an ERR_PTR before proceeding with the update. Signed-off-by: Xuewen Yan --- kernel/power/energy_model.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/power/energy_model.c b/kernel/power/energy_model.c index 277aaf1b19da..4d75e1b3c20e 100644 --- a/kernel/power/energy_model.c +++ b/kernel/power/energy_model.c @@ -331,7 +331,7 @@ int em_dev_update_perf_domain(struct device *dev, struct em_perf_table *old_table; struct em_perf_domain *pd; - if (!dev) + if (!dev || IS_ERR_OR_NULL(new_table)) return -EINVAL; /* Serialize update/unregister or concurrent updates */ -- 2.25.1