From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jarek Poplawski Subject: Re: [PATCH] af_packet: Don't use skb after dev_queue_xmit() Date: Tue, 19 Jan 2010 23:45:08 +0100 Message-ID: <20100119224508.GA3473@del.dom.local> References: <20100118212516.GE3157@del.dom.local> <4B54D50C.90608@majjas.com> <20100118220814.GG3157@del.dom.local> <20100118221747.GH3157@del.dom.local> <4B54E4EF.8080602@majjas.com> <4B554730.6090000@majjas.com> <20100119104739.GA9088@ff.dom.local> <4B55D40F.5080509@majjas.com> <20100119195933.GA3060@del.dom.local> <4B5610A9.7030902@majjas.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Stephen Hemminger , David Miller , akpm@linux-foundation.org, flyboy@gmail.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org To: Michael Breuer Return-path: Content-Disposition: inline In-Reply-To: <4B5610A9.7030902@majjas.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Tue, Jan 19, 2010 at 03:06:01PM -0500, Michael Breuer wrote: > On 1/19/2010 2:59 PM, Jarek Poplawski wrote: > >On Tue, Jan 19, 2010 at 10:47:27AM -0500, Michael Breuer wrote: > >... > >>Still get the warning... but now 60 bytes. > >>Jan 19 10:43:50 mail kernel: ------------[ cut here ]------------ > >>Jan 19 10:43:50 mail kernel: WARNING: at lib/dma-debug.c:902 > >Thanks for trying this. > >Jarek P. > NP. Let me know what else I can do to help with this one. Note that > it seems innocuous. I'll continue with the older set and no dmar for > now and see if I get another crash. Maybe one more idea to try (not compiled). Jarek P. --- drivers/net/sky2.c | 6 ++++-- 1 files changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c index 7650f73..cdebdd3 100644 --- a/drivers/net/sky2.c +++ b/drivers/net/sky2.c @@ -2252,12 +2252,14 @@ static struct sk_buff *receive_copy(struct sky2_port *sky2, skb = netdev_alloc_skb_ip_align(sky2->netdev, length); if (likely(skb)) { pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->data_addr, - length, PCI_DMA_FROMDEVICE); + pci_unmap_len(re, data_size), + PCI_DMA_FROMDEVICE); skb_copy_from_linear_data(re->skb, skb->data, length); skb->ip_summed = re->skb->ip_summed; skb->csum = re->skb->csum; pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr, - length, PCI_DMA_FROMDEVICE); + pci_unmap_len(re, data_size), + PCI_DMA_FROMDEVICE); re->skb->ip_summed = CHECKSUM_NONE; skb_put(skb, length); }