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Re: [dm-devel] [Bug 19642] New: 2.6.36-rc6 BUG at drivers/scsi/scsi_lib.c:1113



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" <linux horizon com>
> 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.

James


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