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
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