scsi hangs [drow at cs.cmu.edu: Re: CD-writers] (fwd)

[Brad Midgley]

i have tried out the current vger kernel and i'd characterize it as "five
times" as stable. meaning i can copy 125 megabytes from a jaz on the
external bus to a drive on the internal bus before it crashes--with
2.1.130 i could only copy about 25 megabytes before it crashed. the error
when it crashes is always:

Kernel panic: Inactive in scsi_request_queueable
In swapper task - not syncing
Rebooting in 180 seconds...

is there anything i could do to help dig up this problem?

thanks
brad

> 
> Brad Midgley <brad at pht.com> wrote:
> 
> > what was the result of testing this patch? i see it isn't present at vger.
> > but does it make scsi activity safer? does it need more testing? should i
> > test it as-is?
> 
> [patch to drivers/scsi/sd.c snipped]
> 
> It turns out that patch isn't necessary - all that was needed is to do
> spin_lock_irqsave(&io_request_lock, flags) before calling the scsi
> done function in the mesh driver (and spin_unlock_irqrestore after).
> That's done, in different forms, both in vger and Linus' 2.2.0-pre2
> and later, so it should be OK now.
> 
> Paul.
> 


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