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=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 70E69C43381 for ; Tue, 12 Mar 2019 17:35:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 404BE2087C for ; Tue, 12 Mar 2019 17:35:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1552412138; bh=sqgDS6a+Gotp4wqmnSkgkaleqmxz5QSa9GVK7akVHV4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=10P6Ym8D2f+edaXQSnfPoy6FLSbdkpmjlwXiDAyW6PSbsFE+QJPtDKJez9k+4JjrE su0bVM8XCnrTKBGVLLUYFWi/Q2qgt0nrquR06SkrnPWQp4psNyUOyMRYhYZqaIOgIp reDDCfKvVc4gLAM5Zf28cWTkAH4ZXFqmaXqq6N4c= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729552AbfCLRfh (ORCPT ); Tue, 12 Mar 2019 13:35:37 -0400 Received: from mail.kernel.org ([198.145.29.99]:59658 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729342AbfCLRQw (ORCPT ); Tue, 12 Mar 2019 13:16:52 -0400 Received: from localhost (unknown [104.133.8.98]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 391332171F; Tue, 12 Mar 2019 17:16:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1552411011; bh=sqgDS6a+Gotp4wqmnSkgkaleqmxz5QSa9GVK7akVHV4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=zcBLuYrtymkDld6cIJXDt1v5g6jxA8mmnuwN5r3HZp/nZsBlFm/vdS563NGxT4NLL 6HHOL+A81M57Gd7Z4Jj/b58DCYq3ApD+/O1iXMc3g/4iPDUzOimxvJFk1rQNB0BgT3 xMa/xkzlaPO73fuZzZwf8Gkwdk1H2dyvpxcWlNsA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dan Williams , Andy Shevchenko , Vinod Koul , Sasha Levin Subject: [PATCH 4.14 107/135] dmaengine: dmatest: Abort test in case of mapping error Date: Tue, 12 Mar 2019 10:09:14 -0700 Message-Id: <20190312170351.060159584@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190312170341.127810985@linuxfoundation.org> References: <20190312170341.127810985@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit 6454368a804c4955ccd116236037536f81e5b1f1 ] In case of mapping error the DMA addresses are invalid and continuing will screw system memory or potentially something else. [ 222.480310] dmatest: dma0chan7-copy0: summary 1 tests, 3 failures 6 iops 349 KB/s (0) ... [ 240.912725] check: Corrupted low memory at 00000000c7c75ac9 (2940 phys) = 5656000000000000 [ 240.921998] check: Corrupted low memory at 000000005715a1cd (2948 phys) = 279f2aca5595ab2b [ 240.931280] check: Corrupted low memory at 000000002f4024c0 (2950 phys) = 5e5624f349e793cf ... Abort any test if mapping failed. Fixes: 4076e755dbec ("dmatest: convert to dmaengine_unmap_data") Cc: Dan Williams Signed-off-by: Andy Shevchenko Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin --- drivers/dma/dmatest.c | 28 ++++++++++++---------------- 1 file changed, 12 insertions(+), 16 deletions(-) diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c index 80cc2be6483c..e39336127741 100644 --- a/drivers/dma/dmatest.c +++ b/drivers/dma/dmatest.c @@ -626,11 +626,9 @@ static int dmatest_func(void *data) srcs[i] = um->addr[i] + src_off; ret = dma_mapping_error(dev->dev, um->addr[i]); if (ret) { - dmaengine_unmap_put(um); result("src mapping error", total_tests, src_off, dst_off, len, ret); - failed_tests++; - continue; + goto error_unmap_continue; } um->to_cnt++; } @@ -645,11 +643,9 @@ static int dmatest_func(void *data) DMA_BIDIRECTIONAL); ret = dma_mapping_error(dev->dev, dsts[i]); if (ret) { - dmaengine_unmap_put(um); result("dst mapping error", total_tests, src_off, dst_off, len, ret); - failed_tests++; - continue; + goto error_unmap_continue; } um->bidi_cnt++; } @@ -679,12 +675,10 @@ static int dmatest_func(void *data) } if (!tx) { - dmaengine_unmap_put(um); result("prep error", total_tests, src_off, dst_off, len, ret); msleep(100); - failed_tests++; - continue; + goto error_unmap_continue; } done->done = false; @@ -693,12 +687,10 @@ static int dmatest_func(void *data) cookie = tx->tx_submit(tx); if (dma_submit_error(cookie)) { - dmaengine_unmap_put(um); result("submit error", total_tests, src_off, dst_off, len, ret); msleep(100); - failed_tests++; - continue; + goto error_unmap_continue; } dma_async_issue_pending(chan); @@ -711,16 +703,14 @@ static int dmatest_func(void *data) dmaengine_unmap_put(um); result("test timed out", total_tests, src_off, dst_off, len, 0); - failed_tests++; - continue; + goto error_unmap_continue; } else if (status != DMA_COMPLETE) { dmaengine_unmap_put(um); result(status == DMA_ERROR ? "completion error status" : "completion busy status", total_tests, src_off, dst_off, len, ret); - failed_tests++; - continue; + goto error_unmap_continue; } dmaengine_unmap_put(um); @@ -765,6 +755,12 @@ static int dmatest_func(void *data) verbose_result("test passed", total_tests, src_off, dst_off, len, 0); } + + continue; + +error_unmap_continue: + dmaengine_unmap_put(um); + failed_tests++; } ktime = ktime_sub(ktime_get(), ktime); ktime = ktime_sub(ktime, comparetime); -- 2.19.1