From patchwork Tue Nov 29 01:01:46 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: cuigaosheng X-Patchwork-Id: 13058051 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4D781C43217 for ; Tue, 29 Nov 2022 01:03:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:CC :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=QTZrWsqBi0aSsWE728Hlxk6ulR/NpGQfTkY+tIZRpxw=; b=t7zgYLof04CnZM zM0jPaCFhEpT9B/I1O7JfQ44bwmh/3d0jKTiu3ncfDaMRiEpenke/JOOwn9xU7X5bGKEu06a0+clb ReNnaVtvBVEYYSGidmt/pjO0A73KiBGc3QjUjFqW3SB5JcMlfo/WJZMNhizyDygIpympr9oEqbxC+ NqdKsQWKnYRcD7+dJ1uI0ncbBqvCclabW2sxUrizGGEej6pVLAuCKiOmvCvEqwMMOGLUfgJo8AB2c t913ZWxCDukwk2USQjxa5+Zworr0Ojv7Ej1Obt1EUFratgOa0d9R1npfIbBqwTagTsljpEw28iRZ+ s/2dr24PxBXp/4Wf7+SQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ozp0n-004wXq-AV; Tue, 29 Nov 2022 01:02:13 +0000 Received: from szxga08-in.huawei.com ([45.249.212.255]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ozp0j-004wWN-VJ for linux-arm-kernel@lists.infradead.org; Tue, 29 Nov 2022 01:02:11 +0000 Received: from kwepemi500012.china.huawei.com (unknown [172.30.72.57]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4NLkYJ73qvz15Mb6; Tue, 29 Nov 2022 09:01:08 +0800 (CST) Received: from cgs.huawei.com (10.244.148.83) by kwepemi500012.china.huawei.com (7.221.188.12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Tue, 29 Nov 2022 09:01:46 +0800 From: Gaosheng Cui To: , , , CC: Subject: [PATCH] driver: soc: xilinx: fix memory leak in xlnx_add_cb_for_notify_event() Date: Tue, 29 Nov 2022 09:01:46 +0800 Message-ID: <20221129010146.1026685-1-cuigaosheng1@huawei.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [10.244.148.83] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To kwepemi500012.china.huawei.com (7.221.188.12) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221128_170210_213883_61A26032 X-CRM114-Status: GOOD ( 10.13 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The kfree() should be called when memory fails to be allocated for cb_data in xlnx_add_cb_for_notify_event(), otherwise there will be a memory leak, so add kfree() to fix it. Fixes: 05e5ba40ea7a ("driver: soc: xilinx: Add support of multiple callbacks for same event in event management driver") Signed-off-by: Gaosheng Cui Acked-by: Michal Simek --- drivers/soc/xilinx/xlnx_event_manager.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/soc/xilinx/xlnx_event_manager.c b/drivers/soc/xilinx/xlnx_event_manager.c index 2de082765bef..c76381899ef4 100644 --- a/drivers/soc/xilinx/xlnx_event_manager.c +++ b/drivers/soc/xilinx/xlnx_event_manager.c @@ -116,8 +116,10 @@ static int xlnx_add_cb_for_notify_event(const u32 node_id, const u32 event, cons INIT_LIST_HEAD(&eve_data->cb_list_head); cb_data = kmalloc(sizeof(*cb_data), GFP_KERNEL); - if (!cb_data) + if (!cb_data) { + kfree(eve_data); return -ENOMEM; + } cb_data->eve_cb = cb_fun; cb_data->agent_data = data;