From patchwork Wed Dec 28 04:24:31 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiasheng Jiang X-Patchwork-Id: 637548 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 66374C3DA7A for ; Wed, 28 Dec 2022 04:25:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229722AbiL1EZL (ORCPT ); Tue, 27 Dec 2022 23:25:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40746 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229526AbiL1EY6 (ORCPT ); Tue, 27 Dec 2022 23:24:58 -0500 Received: from cstnet.cn (smtp80.cstnet.cn [159.226.251.80]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 7B174DB1; Tue, 27 Dec 2022 20:24:56 -0800 (PST) Received: from localhost.localdomain (unknown [124.16.138.125]) by APP-01 (Coremail) with SMTP id qwCowAB3oO4BxatjmXuOCQ--.8808S2; Wed, 28 Dec 2022 12:24:49 +0800 (CST) From: Jiasheng Jiang To: jejb@linux.ibm.com, martin.petersen@oracle.com, john.garry@huawei.com, damien.lemoal@wdc.com Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, Jiasheng Jiang Subject: [PATCH] scsi: libsas: Add missing check for dma_map_single Date: Wed, 28 Dec 2022 12:24:31 +0800 Message-Id: <20221228042431.24923-1-jiasheng@iscas.ac.cn> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-CM-TRANSID: qwCowAB3oO4BxatjmXuOCQ--.8808S2 X-Coremail-Antispam: 1UD129KBjvdXoW7Gr15ZF1DZw4xZF1UCrWfZrb_yoWfKFb_Cr WUW3Z3WryDCrs3tw1jqFy5ZryFyw4kWFnY9wn2v393A34YqFWfW34jvFy8Zw48Gw4UCFy5 Jay7CFs5Cr1DtjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbzkFF20E14v26r4j6ryUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_Xr0_Ar1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j 6F4UJwA2z4x0Y4vEx4A2jsIE14v26r4UJVWxJr1l84ACjcxK6I8E87Iv6xkF7I0E14v26F 4UJVW0owAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv 7VC0I7IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r 1j6r4UM4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwCF04k20xvY0x0E wIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E74 80Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_JF0_Jw1lIxkGc2Ij64vIr41lIxAIcVC0 I7IYx2IY67AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Jr0_Gr1lIxAIcVCF04 k26cxKx2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r1j6r4UMIIF0xvEx4A2jsIEc7Cj xVAFwI0_Gr0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x0JUdHUDUUUUU= X-Originating-IP: [124.16.138.125] X-CM-SenderInfo: pmld2xxhqjqxpvfd2hldfou0/ Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Add check for dma_map_single and return error if it fails in order to avoid invalid dma address. Fixes: 2908d778ab3e ("[SCSI] aic94xx: new driver") Signed-off-by: Jiasheng Jiang --- drivers/scsi/aic94xx/aic94xx_task.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/scsi/aic94xx/aic94xx_task.c b/drivers/scsi/aic94xx/aic94xx_task.c index ed119a3f6f2e..7f0208300110 100644 --- a/drivers/scsi/aic94xx/aic94xx_task.c +++ b/drivers/scsi/aic94xx/aic94xx_task.c @@ -50,6 +50,9 @@ static int asd_map_scatterlist(struct sas_task *task, dma_addr_t dma = dma_map_single(&asd_ha->pcidev->dev, p, task->total_xfer_len, task->data_dir); + if (dma_mapping_error(&asd_ha->pcidev->dev, dma)) + return -ENOMEM; + sg_arr[0].bus_addr = cpu_to_le64((u64)dma); sg_arr[0].size = cpu_to_le32(task->total_xfer_len); sg_arr[0].flags |= ASD_SG_EL_LIST_EOL;