On Sun, May 06 2001, Phil Stracchino wrote:
> On Sun, May 06, 2001 at 03:05:00AM -0700, Phil Stracchino wrote:
> > Hey folks,
> > I'm seeing a problem with mounting CDs using a Toshiba XM-6401TA CDROM
> > drive attached to an Adaptec AHA1542CF controller (scsi1) on kernel 2.4.3
> > and 2.4.4.  The behavior seems to be fairly consistent as follows:
> > 
> > first mount and unmount works normally, no unusual events logged
> > second mount and unmount works normally, no unusual events logged
> > third mount locks up the machine.  looks like a kernel panic.
> > 
> > Any ideas?
> 
> 
> Panic is confirmed.  This time, it lived long enough to log:
>  
> May  6 14:05:05 babylon5 kernel: Kernel panic: scsi_free:Bad offset
> 
> Since it involves the CDROM, the aha1542 driver is implicated.  Why it's
> getting a bad offset, I don't understand enough about the SCSI drivers to
> know; all the scsi_free calls in aha1542.c look identical to me.
>  
> Would any Linux SCSI gurus care to let me know any diagnostic procedures
> recommended for nailing this one?

The panic should be fixed with attached patch.

-- 
Jens Axboe