From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4EC68C38A29 for ; Mon, 13 Apr 2020 13:17:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 32D2A20787 for ; Mon, 13 Apr 2020 13:17:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729058AbgDMLfT (ORCPT ); Mon, 13 Apr 2020 07:35:19 -0400 Received: from szxga07-in.huawei.com ([45.249.212.35]:58936 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728960AbgDMLfR (ORCPT ); Mon, 13 Apr 2020 07:35:17 -0400 Received: from DGGEMS401-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id E76FF3C5A2E54BFF94E0; Mon, 13 Apr 2020 19:35:11 +0800 (CST) Received: from huawei.com (10.175.102.37) by DGGEMS401-HUB.china.huawei.com (10.3.19.201) with Microsoft SMTP Server id 14.3.487.0; Mon, 13 Apr 2020 19:35:03 +0800 From: Li Bin To: , , CC: , , , Subject: [PATCH] scsi: sg: add sg_remove_request in sg_common_write Date: Mon, 13 Apr 2020 19:29:21 +0800 Message-ID: <1586777361-17339-1-git-send-email-huawei.libin@huawei.com> X-Mailer: git-send-email 1.7.12.4 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.175.102.37] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If the dxfer_len is greater than 256M that the request is invalid, it should call sg_remove_request in sg_common_write. Fixes: f930c7043663 ("scsi: sg: only check for dxfer_len greater than 256M") Signed-off-by: Li Bin --- drivers/scsi/sg.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index 4e6af592..9c0ee19 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -793,8 +793,10 @@ static int get_sg_io_pack_id(int *pack_id, void __user *buf, size_t count) "sg_common_write: scsi opcode=0x%02x, cmd_size=%d\n", (int) cmnd[0], (int) hp->cmd_len)); - if (hp->dxfer_len >= SZ_256M) + if (hp->dxfer_len >= SZ_256M) { + sg_remove_request(sfp, srp); return -EINVAL; + } k = sg_start_req(srp, cmnd); if (k) { -- 1.7.12.4