From patchwork Tue Aug 1 11:14:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: wangzhu X-Patchwork-Id: 13336526 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9A866C001DF for ; Tue, 1 Aug 2023 11:18:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231661AbjHALSK (ORCPT ); Tue, 1 Aug 2023 07:18:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49940 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234051AbjHALRg (ORCPT ); Tue, 1 Aug 2023 07:17:36 -0400 Received: from szxga03-in.huawei.com (szxga03-in.huawei.com [45.249.212.189]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4818849F7 for ; Tue, 1 Aug 2023 04:14:53 -0700 (PDT) Received: from dggpeml500025.china.huawei.com (unknown [172.30.72.55]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4RFXWF1yt0zLnw2; Tue, 1 Aug 2023 19:12:09 +0800 (CST) Received: from ubuntu1804.huawei.com (10.67.174.202) by dggpeml500025.china.huawei.com (7.185.36.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Tue, 1 Aug 2023 19:14:50 +0800 From: Zhu Wang To: , , , , , , , CC: Subject: [PATCH -next] scsi: snic: fix possible memory leak while device_add() fails Date: Tue, 1 Aug 2023 19:14:21 +0800 Message-ID: <20230801111421.63651-1-wangzhu9@huawei.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.67.174.202] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To dggpeml500025.china.huawei.com (7.185.36.35) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org If device_add() returns error, the name allocated by dev_set_name() need be freed. As comment of device_add() says, it should use put_device() to give up the reference in the error path. So fix this by calling put_device, then the name can be freed in kobject_cleanp(). Fixes: c8806b6c9e82 ("snic: driver for Cisco SCSI HBA") Signed-off-by: Zhu Wang --- drivers/scsi/snic/snic_disc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/scsi/snic/snic_disc.c b/drivers/scsi/snic/snic_disc.c index 3e2e5783924d..e429ad23c396 100644 --- a/drivers/scsi/snic/snic_disc.c +++ b/drivers/scsi/snic/snic_disc.c @@ -303,6 +303,7 @@ snic_tgt_create(struct snic *snic, struct snic_tgt_id *tgtid) "Snic Tgt: device_add, with err = %d\n", ret); + put_device(&tgt->dev); put_device(&snic->shost->shost_gendev); spin_lock_irqsave(snic->shost->host_lock, flags); list_del(&tgt->list);