On Wed, 2015-11-18 at 12:06 +0100, Laurent Dufour wrote:
> On 18/11/2015 10:18, Michael Ellerman wrote:
> > Hi folks,
> >
> > I'm intermittently seeing the following oops on at least one powerpc box.
> >
> > The BUG_ON() is from:
> >
> > static int scsi_init_sgtable(struct request *req, struct scsi_data_buffer
> > *sdb)
> > {
> > ...
> > count = blk_rq_map_sg(req->q, req, sdb->table.sgl);
> > BUG_ON(count > sdb->table.nents);
> >
> > Looking at the dump it looks like count was 2, I can't work out what nents
> > was.
> >
> > The machine's just a fairly boring bare metal setup, with a single IPR
> > adapter:
> >
> > 0001:08:00.0 RAID bus controller: IBM PCI-E IPR SAS Adapter (ASIC) (rev 02)
> > Subsystem: IBM PCIe3 x8 SAS RAID Internal Adapter 6Gb (57D7)
> > Flags: bus master, fast devsel, latency 0
> > Kernel driver in use: ipr
> >
> >
> > Anyone seen it before or have any ideas?
>
> Hi Michael,
>
> I'm facing the same panic on my bare metal system.
>
> Sounds to be raised by the latest update to 4.4-rc1
Yeah I think it's new since 4.3.
Do you see it regularly, or just every now and then?
cheers
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