From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: To: linux-kernel@vger.kernel.org From: walt Subject: Re: [PATCH 3.12 033/118] usb: xhci: Link TRB must not occur within a USB payload burst Date: Tue, 31 Dec 2013 12:40:16 -0800 Message-ID: <52C32BB0.90600@gmail.com> References: <20131218211219.461663463@linuxfoundation.org> <20131218211220.412278148@linuxfoundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit In-Reply-To: <20131218211220.412278148@linuxfoundation.org> Cc: stable@vger.kernel.org Sender: linux-kernel-owner@vger.kernel.org List-ID: On 12/18/2013 01:11 PM, Greg Kroah-Hartman wrote: > 3.12-stable review patch. If anyone has any objections, please let me know. > > ------------------ > > From: David Laight > > commit 35773dac5f862cb1c82ea151eba3e2f6de51ec3e upstream. > > Section 4.11.7.1 of rev 1.0 of the xhci specification states that a link TRB > can only occur at a boundary between underlying USB frames (512 bytes for > high speed devices). > > If this isn't done the USB frames aren't formatted correctly and, for example, > the USB3 ethernet ax88179_178a card will stop sending... Unfortunately this patch causes a regression when copying large files to my outboard USB3 drive. (Nothing at all to do with networking.) When I try to copy a large (20GB) file to the USB3 drive, the copy dies after about 7GB, the ext4 journal aborts and the drive is remounted read-only. This bug is 100% reproducible (always pretty close to 7GB) and reverting this patch completely fixes the problem. (Note to Sarah: I recently emailed you about this problem, and I *wrongly* said that reverting the patch doesn't help. That was a mistake, sorry.) I'm happy to try any debugging suggestions/tricks. BTW, please tell me if I've cc'd too many people.