Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750898AbbLUE0Q (ORCPT ); Sun, 20 Dec 2015 23:26:16 -0500 Received: from mail-qg0-f48.google.com ([209.85.192.48]:34049 "EHLO mail-qg0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750738AbbLUE0P (ORCPT ); Sun, 20 Dec 2015 23:26:15 -0500 Date: Sun, 20 Dec 2015 23:26:13 -0500 From: Tejun Heo To: Linus Torvalds Cc: Kent Overstreet , Christoph Hellwig , Ming Lin , Jens Axboe , "Artem S. Tashkinov" , Steven Whitehouse , IDE-ML , Linux Kernel Mailing List Subject: Re: IO errors after "block: remove bio_get_nr_vecs()" Message-ID: <20151221042613.GA27493@htj.duckdns.org> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1232 Lines: 36 Hello, Linus. On Sun, Dec 20, 2015 at 09:51:14AM -0800, Linus Torvalds wrote: ... > (Also Tejun - maybe you can see what's up - maybe that error message > tells you something) Hmmm... all it says is that something went wrong on the PCI side. > I'm not sure what's up with his machine, the disk doesn't seem to be > anyuthing particularly unusual, it looks like a 1TB Seagate Barracuda: > > ata1.00: ATA-8: ST1000DM003-1CH162, CC44, max UDMA/133 > > which doesn't strike me as odd. > > Looking at the dmesg, it also looks like it's a pretty normal > Sandybridge setup with Intel chipset. Artem, can you confirm? The PCI > ID for the AHCI chip seems to be (INTEL, 0x1c02). > > Any ideas? Anybody? I wonder whether ahci is screwing up command / sg table setup in a way that e.g. if there are too many segments the sg table overflows into the neighboring one which is now being exposed by upper layer being fixed to send down larger commands. Looking into it. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/