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Subject: Re: [LKP] [lkp] [ses] 3417c1b5cb: WARNING: CPU: 2 PID: 2013 at
 fs/xfs/xfs_file.c:772 xfs_file_dio_aio_write+0x2a2/0x320()
From: James Bottomley <James.Bottomley@HansenPartnership.com>
To: "Huang, Ying" <ying.huang@intel.com>
Cc: linux-scsi <linux-scsi@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>,
        "Ewan D.Milne" <emilne@redhat.com>, Tomas Henzl <thenzl@redhat.com>,
        Andrea Gelmini <andrea.gelmini@gelma.net>, lkp@01.org
Date: Mon, 28 Dec 2015 18:11:42 -0800
In-Reply-To: <87bn9b0zjh.fsf@yhuang-dev.intel.com>
References: <87ziwv2vrp.fsf@yhuang-dev.intel.com>
	 <1451279958.2283.4.camel@HansenPartnership.com>
	 <87bn9b0zjh.fsf@yhuang-dev.intel.com>
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On Mon, 2015-12-28 at 16:04 +0800, Huang, Ying wrote:
> James Bottomley <James.Bottomley@HansenPartnership.com> writes:
> 
> > [cc to linux-scsi added]
> > On Mon, 2015-12-28 at 09:43 +0800, kernel test robot wrote:
> > > FYI, we noticed the below changes on
> > > 
> > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.gi
> > > t ma
> > > ster
> > > commit 3417c1b5cb1fdc10261dbed42b05cc93166a78fd ("ses: Fix
> > > problems
> > > with simple enclosures")
> > > 
> > > This may be the intended behavior, we found after your commit,
> > > the
> > > following new message appears in kernel log:
> > > 
> > > [   40.804515] scsi 8:0:12:0: Wrong diagnostic page; asked for 7
> > > got
> > > 0
> > > 
> > > To reproduce:
> > > 
> > >         git clone
> > > git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
> > >         cd lkp-tests
> > >         bin/lkp install job.yaml  # job file is attached in this
> > > email
> > >         bin/lkp run     job.yaml
> > 
> > OK, so what is the enclosure device at host 8?  And what happens
> > when
> > you use sg_ses to ask for page 7?
> 
> We run xfstests on the test machine.  You can check the dmesg
> (kmsg.xz)
> attached in the original reporting email for information about scsi
> host
> 8.

It's not a test failure, it's a problem with your hardware, which looks
to be a Promise SAS expander with enclosure services. 

can you run sg_ses <dev> on it followed by sg_ses --page=7 --hex <dev>?
 To get the sg device run sg_map -i and it should tell you what the
mappings are.

Thanks,

James