Re: [Bug 19642] New: 2.6.36-rc6 BUG at

On Sun, Oct 03 2010 at 2:53pm -0400,
James Bottomley wrote:

> On Sun, 2010-10-03 at 18:37 +0000, bugzilla-daemon@bugzilla.kernel.org
> wrote:
> > https://bugzilla.kernel.org/show_bug.cgi?id=19642
> >
> > Summary: 2.6.36-rc6 BUG at drivers/scsi/scsi_lib.c:1113
> > Product: IO/Storage
> > Version: 2.5
> > Kernel Version: 2.6.36-rc6
> > Platform: All
> > OS/Version: Linux
> > Tree: Mainline
> > Status: NEW
> > Severity: normal
> > Priority: P1
> > Component: SCSI
> > AssignedTo: linux-scsi@vger.kernel.org
>
> I think this is wrong.
>
> > ReportedBy: maciej.rutecki@gmail.com
> > CC: rjw@sisk.pl, maciej.rutecki@gmail.com,
> > linux@horizon.com
> > Regression: Yes
> >
> >
> > Subject : 2.6.36-rc6 BUG at drivers/scsi/scsi_lib.c:1113
> > Submitter : "George Spelvin"
> > Date : 2010-09-30 21:10
> > Message-ID : 20100930211006.27449.qmail@science.horizon.com
> > References : http://marc.info/?l=linux-kernel&m=128588102620299&w=2
>
> That looks like a zero length barrier send down to SCSI with the RW flag
> set (hence we try to map a buffer that has nothing to map). I cc'd
> dm-devel to see what their opinion is.

Given that the referenced LKML report is MD focused it seems linux-raid
should be cc'd instead (doing so now).

Mike