From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dan Williams Subject: [PATCH] dmaengine: fix sleep in atomic Date: Fri, 13 Dec 2013 01:01:18 -0800 Message-ID: <20131213090100.23207.82563.stgit@viggo.jf.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, dave.jiang@intel.com To: dmaengine@vger.kernel.org Return-path: 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 Sender: netdev-owner@vger.kernel.org List-ID: 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(-) 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;