Re: raid1d crash at boot

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On Mon, 21 Nov 2011 08:04:30 +0100 James Bottomley
<James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> wrote:

> On Mon, 2011-11-21 at 12:37 +1100, NeilBrown wrote:
> > Thank for the report.
> > However as this crash is clearly in the SCSI layer it makes sense to reported
> > it to linux-scsi - so I have cc:ed this reply there.
> > 
> > NeilBrown
> > 
> > 
> > On Sat, 19 Nov 2011 14:41:39 +0100 Michał Mirosław <mirq-linux@xxxxxxxxxxxx>
> > wrote:
> > 
> > > I get following BUG_ON tripped while booting, before rootfs is mounted by
> > > Debian's initrd. This started to happen for kernels since sometime
> > > during 3.1-rcX.
> > > 
> > > [    6.246170] ------------[ cut here ]------------
> > > [    6.246246] kernel BUG at /mnt/src-tmp/jaja/git/qmqm/drivers/scsi/scsi_lib.c:1153!
> 
> I can tell you what it is:
> 
>         /*
>          * Filesystem requests must transfer data.
>          */
>         BUG_ON(!req->nr_phys_segments);
> 
> But the fault is in the layer above SCSI.  It means something sent a
> request with REQ_TYPE_FS but no actual data attached ... this is
> supposed to be impossible, hence the bug on.
> 
> James
> 

Thanks.... that sounds strangely familiar, but I cannot be sure and google
doesn't help.

Michał: what are you using on the RAID1 - some filesystem (which one)or swap or something else?

NeilBrown

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