From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Chinner Subject: Re: BUG: scheduling while atomic in blk_mq codepath? Date: Fri, 20 Jun 2014 08:38:20 +1000 Message-ID: <20140619223820.GN4453@dastard> References: <20140619153550.GA12836@thunk.org> <53A308DE.7080000@fb.com> <20140619160801.GB4907@thunk.org> <20140619162144.GC4907@thunk.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from ipmail05.adl6.internode.on.net ([150.101.137.143]:44424 "EHLO ipmail05.adl6.internode.on.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754675AbaFSWiY (ORCPT ); Thu, 19 Jun 2014 18:38:24 -0400 Content-Disposition: inline In-Reply-To: <20140619162144.GC4907@thunk.org> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Theodore Ts'o , Jens Axboe , linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org On Thu, Jun 19, 2014 at 12:21:44PM -0400, Theodore Ts'o wrote: > On Thu, Jun 19, 2014 at 12:08:01PM -0400, Theodore Ts'o wrote: > > > The other issue, not sure, not a lot of detail. It may be fixed by the pull > > > request I sent out yesterday. You can try pulling in: > > > > > > git://git.kernel.dk/linux-block.git for-linus > > > > Thanks, I'll give that a try. > > I tried merging in your for-linus branch in v3.16-rc1, and I'm seeing > the following. On a 32-bit x86 3.15 kernel, run: "mke2fs -t ext3 > /dev/vdc" where /dev/vdc is a 5 gig virtio partition. Short reads are more likely a bug in all the iovec iterator stuff that got merged in from the vfs tree. ISTR a 32 bit-only bug in that stuff go past in to do with not being able to partition a 32GB block dev on a 32 bit system due to a 32 bit size_t overflow somewhere.... Cheers, Dave. -- Dave Chinner david@fromorbit.com