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 AAAE91509AC; Tue, 20 Feb 2024 21:16:39 +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=1708463799; cv=none; b=fwLWVjriuu23adoTMfzZe8mMz+QFybkuENfx6AxV6bDtg/2zxEYrWwYR40GHbkSWLlAOAsZ3jVXJ5rN09dZvloMvg1LMJIKH2qZxOcTRIKNCz9kd4/+jwOZ+1Qv4FADDnZT2Hxbb+nQAp0KqcsW1g452/kNO+D+5n2mfGodruW0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708463799; c=relaxed/simple; bh=XGxBttiSt+pPCrYx/aXUPnNg35Q6Gc2zag7kqLaiK0I=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=eHewn+YE5zI37Js3gicCWp+5Ol0qksYtJiEpEonAZzLNTPr76Q1VO0PaDWkIOMMDZXG7tuQtdD3d6CT9GrZJGTSsWUjucZk+dUYYgK+FwzE+M7L4/VZ4qe27511fK3rlLupfDcaqJ19GvrVbTAGeYeVULZAgEHLyppuOI2ujSm8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=YOV+rnvz; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="YOV+rnvz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 32D3AC433C7; Tue, 20 Feb 2024 21:16:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1708463799; bh=XGxBttiSt+pPCrYx/aXUPnNg35Q6Gc2zag7kqLaiK0I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YOV+rnvzs+5TRuPnCw+e9Eki7/LYvWglSkECn0H/f49ipsiYNfxfLUYD208wXXZUm SFWVZWfKqqSwGYbWThk5QIzqIcX5gOKC/nssfhqk10oU6a0ux6HMOCi/6m9brGMqKI qxNWSI0mdERU2IhNxL2VfsCJaf95cICZuEocZQI8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Dinghao Liu , Stable@vger.kernel.org, Jonathan Cameron Subject: [PATCH 6.6 157/331] iio: core: fix memleak in iio_device_register_sysfs Date: Tue, 20 Feb 2024 21:54:33 +0100 Message-ID: <20240220205642.458128152@linuxfoundation.org> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240220205637.572693592@linuxfoundation.org> References: <20240220205637.572693592@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dinghao Liu commit 95a0d596bbd0552a78e13ced43f2be1038883c81 upstream. When iio_device_register_sysfs_group() fails, we should free iio_dev_opaque->chan_attr_group.attrs to prevent potential memleak. Fixes: 32f171724e5c ("iio: core: rework iio device group creation") Signed-off-by: Dinghao Liu Link: https://lore.kernel.org/r/20231208073119.29283-1-dinghao.liu@zju.edu.cn Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman --- drivers/iio/industrialio-core.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -1577,10 +1577,13 @@ static int iio_device_register_sysfs(str ret = iio_device_register_sysfs_group(indio_dev, &iio_dev_opaque->chan_attr_group); if (ret) - goto error_clear_attrs; + goto error_free_chan_attrs; return 0; +error_free_chan_attrs: + kfree(iio_dev_opaque->chan_attr_group.attrs); + iio_dev_opaque->chan_attr_group.attrs = NULL; error_clear_attrs: iio_free_chan_devattr_list(&iio_dev_opaque->channel_attr_list);