From patchwork Fri Dec 13 09:01:18 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Williams X-Patchwork-Id: 3339151 Return-Path: X-Original-To: patchwork-dmaengine@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 34DE3C0D4A for ; Fri, 13 Dec 2013 09:01:36 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8C1DA2061D for ; Fri, 13 Dec 2013 09:01:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BFF23205FF for ; Fri, 13 Dec 2013 09:01:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752329Ab3LMJBV (ORCPT ); Fri, 13 Dec 2013 04:01:21 -0500 Received: from mga09.intel.com ([134.134.136.24]:16599 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752176Ab3LMJBT (ORCPT ); Fri, 13 Dec 2013 04:01:19 -0500 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga102.jf.intel.com with ESMTP; 13 Dec 2013 00:57:33 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.95,477,1384329600"; d="scan'208";a="451704153" Received: from viggo.jf.intel.com ([10.23.232.61]) by orsmga002.jf.intel.com with ESMTP; 13 Dec 2013 01:01:18 -0800 Subject: [PATCH] dmaengine: fix sleep in atomic From: Dan Williams To: dmaengine@vger.kernel.org Cc: netdev@vger.kernel.org, dave.jiang@intel.com Date: Fri, 13 Dec 2013 01:01:18 -0800 Message-ID: <20131213090100.23207.82563.stgit@viggo.jf.intel.com> User-Agent: StGit/0.17.1-3-g7cb9 MIME-Version: 1.0 Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP BUG: sleeping function called from invalid context at mm/mempool.c:203 in_atomic(): 1, irqs_disabled(): 0, pid: 43502, name: linbug no locks held by linbug/43502. CPU: 7 PID: 43502 Comm: linbug Not tainted 3.13.0-rc1+ #15 Hardware name: 0000000000000010 ffff88005ebd1878 ffffffff8172d512 ffff8801752bc1c0 ffff8801752bc1c0 ffff88005ebd1898 ffffffff8109d1f6 ffff88005f9a3c58 ffff880177f0f080 ffff88005ebd1918 ffffffff81161f43 ffff88005ebd18f8 Call Trace: [] dump_stack+0x4e/0x68 [] __might_sleep+0xe6/0x120 [] mempool_alloc+0x93/0x170 [] ? mark_held_locks+0x74/0x140 [] ? follow_page_mask+0x556/0x600 [] dmaengine_get_unmap_data+0x2e/0x60 [] dma_async_memcpy_pg_to_pg+0x41/0x1c0 [] dma_async_memcpy_buf_to_pg+0x50/0x60 [] dma_memcpy_to_iovec+0xfc/0x190 [] dma_skb_copy_datagram_iovec+0x6f/0x2b0 Signed-off-by: Dan Williams --- drivers/dma/dmaengine.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c index b601024f518c..ef63b9058f3c 100644 --- a/drivers/dma/dmaengine.c +++ b/drivers/dma/dmaengine.c @@ -1054,7 +1054,7 @@ dma_async_memcpy_pg_to_pg(struct dma_chan *chan, struct page *dest_pg, dma_cookie_t cookie; unsigned long flags; - unmap = dmaengine_get_unmap_data(dev->dev, 2, GFP_NOIO); + unmap = dmaengine_get_unmap_data(dev->dev, 2, GFP_NOWAIT); if (!unmap) return -ENOMEM;