From patchwork Tue Dec 14 09:03:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jianglei Nie X-Patchwork-Id: 12675701 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 56D2AC433F5 for ; Tue, 14 Dec 2021 09:19:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232183AbhLNJTK (ORCPT ); Tue, 14 Dec 2021 04:19:10 -0500 Received: from mail-m975.mail.163.com ([123.126.97.5]:50887 "EHLO mail-m975.mail.163.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230383AbhLNJTK (ORCPT ); Tue, 14 Dec 2021 04:19:10 -0500 X-Greylist: delayed 904 seconds by postgrey-1.27 at vger.kernel.org; Tue, 14 Dec 2021 04:19:09 EST DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:Subject:Date:Message-Id:MIME-Version; bh=LgBp9 9KE97lkefxq811mzJ7dGlgzx0T3MUWZy5bxN1A=; b=BSp6oIvf6V4znGycN/NXE 8khl1ZO+Db8qZUEijrbLtT/H0PjsCmryXT5BMaDuTVZ7cQb2zdRI/T42rH98fUMc Mezk7cKWRm8Kj/ST/V4V/J2zpAWDVhvvp2HGlX5eHPuHvkWBhjI4Kk6EWIvEIu0D 4wc19XJK6g41b4DW+1bYrE= Received: from localhost.localdomain (unknown [36.112.214.113]) by smtp5 (Coremail) with SMTP id HdxpCgBnMiXrXbhheRXWBQ--.25889S4; Tue, 14 Dec 2021 17:03:54 +0800 (CST) From: Jianglei Nie To: jinpu.wang@cloud.ionos.com, jejb@linux.ibm.com, martin.petersen@oracle.com Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, Jianglei Nie Subject: [PATCH] scsi: pm8001: Fix memory leak in pm8001_send_abort_all() Date: Tue, 14 Dec 2021 17:03:37 +0800 Message-Id: <20211214090337.29156-1-niejianglei2021@163.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-CM-TRANSID: HdxpCgBnMiXrXbhheRXWBQ--.25889S4 X-Coremail-Antispam: 1Uf129KBjvJXoWxJry7Xr47trW8Gr4DJr4Utwb_yoW8XF13pF Z7ZF12kr4UJa10gwsxAanrXwnYv3yxK34UCFW8Z3s09FW3XFW0qFyIvrW2qr1xJrykCF17 XFyDWFsrWFyDZr7anT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x07jqdgAUUUUU= X-Originating-IP: [36.112.214.113] X-CM-SenderInfo: xqlhyxxdqjzvrlsqjii6rwjhhfrp/1tbiWxppjFSIsjnzDgAAsO Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org In line 1767, sas_alloc_slow_task() allocates and initializes a sas_task structure. When some errors occur, line 1778 and line 1795 forget to free this structure, which will lead to a memory leak. There is a similar snippet of code in the same file (in function pm8001_send_read_log) as allocating and initializing in line 1812 as well as releasing the memory in line 1822 and line 1867. We can fix it by calling sas_free_task() when the res and ret is true and before the function returns. Signed-off-by: Jianglei Nie --- drivers/scsi/pm8001/pm8001_hwi.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c index 124cb69740c6..25045a91620e 100644 --- a/drivers/scsi/pm8001/pm8001_hwi.c +++ b/drivers/scsi/pm8001/pm8001_hwi.c @@ -1774,8 +1774,10 @@ static void pm8001_send_abort_all(struct pm8001_hba_info *pm8001_ha, task->task_done = pm8001_task_done; res = pm8001_tag_alloc(pm8001_ha, &ccb_tag); - if (res) + if (res) { + sas_free_task(task); return; + } ccb = &pm8001_ha->ccb_info[ccb_tag]; ccb->device = pm8001_ha_dev; @@ -1791,8 +1793,10 @@ static void pm8001_send_abort_all(struct pm8001_hba_info *pm8001_ha, ret = pm8001_mpi_build_cmd(pm8001_ha, circularQ, opc, &task_abort, sizeof(task_abort), 0); - if (ret) + if (ret) { + sas_free_task(task); pm8001_tag_free(pm8001_ha, ccb_tag); + } }