From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-dy1-f181.google.com (mail-dy1-f181.google.com [74.125.82.181]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CDDA1359A99 for ; Thu, 2 Apr 2026 03:24:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.181 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775100270; cv=none; b=rG/Hg4l6FnAXhfl0He8hGbkcxgTVfKroS/WBYow7tedylT3Ohu4/2eA7/AYjlxxtcamCwHPUwNa4LoOVpZkyU1CfGlAiyGV4ckxxx9QA8hfeF3MfK26KErmF1BKF8zp25GreqWQPifteeaO3VxuYuoo7exda/IXaG+bTRteTb+s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775100270; c=relaxed/simple; bh=xoAxyd23RUHtYfq932MDE3PcTF7vl72cZnWGDgo18cE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=CgIXcX2fYfvJaqmX6p4gu18f8H+6CuN6r/LxgjXYQDmekdMtLcdnem2iUCw2e4FKAv1sp6K9XguhyUn6OVuMLtuvqmCZbXqg07usH5V2yyaSxv4qk06z9c2ynDkwewBtMNP4ohBHO171o4D55YQ24/fNACCPDed+BiqDi/LdeUM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=JJNVdau+; arc=none smtp.client-ip=74.125.82.181 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="JJNVdau+" Received: by mail-dy1-f181.google.com with SMTP id 5a478bee46e88-2ca4ff720ccso556380eec.0 for ; Wed, 01 Apr 2026 20:24:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1775100268; x=1775705068; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=7lNuuLOzmr03xq4m1O8HQgZGp2bHbRJpd3HGUaao6ag=; b=JJNVdau+RMHXLBNoH8a91Zz51IwaIMqy1HBvhcsaDi1TwTREuROK3cMTAXSMcgHHS+ B01dkgpVIpCyxFHFaHmd5igJAYqxNSK2iVYAtV1nuQCbO/WwAJ8xHKizVGBQPJudOsPh a40bEeEEueyekxgzUaMkLSBhbIoOrHIU/+arJbyzdQ8pREScDY3GTU3IJo8Nx9tloyrB Gx+rHr0LidAYM4eWFi5OmVg6r/Yv5zfyDcKYiY8zWB+grCdTERRgLA/lSYAkT4W0rs1z eHWaS5XvXG2A1WF8A3tKLev3R7ywIZZ820/NjFfpvd4CgQhbe+8dnQKArYoh6tNvFcFJ 60lA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1775100268; x=1775705068; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=7lNuuLOzmr03xq4m1O8HQgZGp2bHbRJpd3HGUaao6ag=; b=aMS4D3lfMYadISiNQg/SbD0ZzUhsHK4AkKBZcm/gmdhurgc/2nbbafBRGxhYZH6INn 2QsX2RTG7CovxH7ARKkYH22Pveu8TFjdiScXVUcTar3NbmvCTaOaEv8M9QZILyZR7hAf RksOVqJqUw7C7EK+G6KmFbhNqJT8BVIljEflQILjFrjeMTULS7C/mshOGSzaroD+c8BZ 7wDeJsebCpxMNnwR7GylpBBimGZ4wkDolnJcmA+Zt0HQs1jgSE3WBkxsOD3l/JQrcY0I +OJ/6pOUxbAL6eRykuiMXF39FLEgzwwmoFcM+KPWQbirj5ILRWQL9TfAqwIA4gXiukMW aSgg== X-Forwarded-Encrypted: i=1; AJvYcCU+Pqm115quOh0TBgBWqjbP1TTKJ0pNbw9G8kTALNWDnsBlMz18BILzAxFl6CXbCEJVWJlMq2w=@vger.kernel.org X-Gm-Message-State: AOJu0YwEQ4pfVyB6WjqbDeTm62poYl3Uuw9W0wVIEYULPMt1yeLU3pC2 DBpqN3ZJntvTRFyoz21OBoAanuCGdV1UG+ULarntNZlk2VxgQxotrugm X-Gm-Gg: ATEYQzwvlHY3L2e2sl3stFIUL/c8XIoDbd7ihpgYFKChIFEf1cbojOdr77xmrCSZSfS e1MaeTeZ27pWev0+PHOlda26DzMdYzg6QQqGJiNyHff39V7b32zdJcDq4VPPRyEJblOetGlV3fF 2axbDHUEnluyXNbQbLC/IJ7EfZWgszEeKC5U8LjQooaKuPbShbd0EKNdwEilJGY5IlLvQIQr0j4 Q1eISuD2ACWnP+BeUiDfPcuMX7tMNOS2/czr3pD7f+RLSGoaIU2talt3jdOoo061L0VKQx8eoan ceqlxu8ezLXK4TAK8+jaffRNqrjQ9bLqrZ7ChgEUwEWW1ebupifi2QnZB9/Ne4xqBTuIZIGDgi5 D/xLNauepni43Y7FCTQVSme/oZtsrwkWFHGA6mTxjt5CJZV37meqmMY7wYYEHk0SksyOZ8XU9X7 i6/hthbAunHCuGVPHqKuxFjcapcLhX4rQ3KshxuDF+sXRE/tpeUfnv/8vFSspyqL4okME99M2lj IDFeapeqsCZQOU= X-Received: by 2002:a05:7300:a483:b0:2c1:1d6b:1698 with SMTP id 5a478bee46e88-2cad67a8282mr332104eec.5.1775100267985; Wed, 01 Apr 2026 20:24:27 -0700 (PDT) Received: from lappy (108-228-232-20.lightspeed.sndgca.sbcglobal.net. [108.228.232.20]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2ca7cae9e9esm1265981eec.23.2026.04.01.20.24.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 01 Apr 2026 20:24:27 -0700 (PDT) From: "Derek J. Clark" To: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , Hans de Goede Cc: Mark Pearson , Armin Wolf , Jonathan Corbet , Rong Zhang , Kurt Borja , "Derek J . Clark" , platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH v7 01/16] platform/x86: lenovo-wmi-helpers: Fix memory leak in lwmi_dev_evaluate_int() Date: Thu, 2 Apr 2026 03:24:09 +0000 Message-ID: <20260402032424.678528-2-derekjohn.clark@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260402032424.678528-1-derekjohn.clark@gmail.com> References: <20260402032424.678528-1-derekjohn.clark@gmail.com> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Rong Zhang lwmi_dev_evaluate_int() leaks output.pointer when retval == NULL (found by sashiko.dev [1]). Fix it by moving `ret_obj = output.pointer' outside of the `if (retval)' block so that it is always freed by the __free cleanup callback. No functional change intended. Fixes: e521d16e76cd ("platform/x86: Add lenovo-wmi-helpers") Cc: stable@vger.kernel.org Link: https://sashiko.dev/#/patchset/20260331181208.421552-1-derekjohn.clark%40gmail.com [1] Signed-off-by: Rong Zhang --- drivers/platform/x86/lenovo/wmi-helpers.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/platform/x86/lenovo/wmi-helpers.c b/drivers/platform/x86/lenovo/wmi-helpers.c index 7379defac500..80021f59d1ef 100644 --- a/drivers/platform/x86/lenovo/wmi-helpers.c +++ b/drivers/platform/x86/lenovo/wmi-helpers.c @@ -55,8 +55,9 @@ int lwmi_dev_evaluate_int(struct wmi_device *wdev, u8 instance, u32 method_id, if (ACPI_FAILURE(status)) return -EIO; + ret_obj = output.pointer; + if (retval) { - ret_obj = output.pointer; if (!ret_obj) return -ENODATA; -- 2.53.0