Re: 2.6.16-git4: kernel BUG at block/ll_rw_blk.c:3497

[Al Viro]

On Wed, Mar 29, 2006 at 10:16:43AM +0200, Jens Axboe wrote:
> triggering. What sort of testing were you running, exactly?
> 
> Al, any ideas?

I really wonder why it's the call from do_exit() that triggers it.
The thing is, we get off-by-exactly-one here and all previous callers
of that puppy would be elsewhere (cfq, mostly).

IOW, we get exactly one extra call of put_io_context() _and_ have it
happen before do_exit() (i.e. from normal IO paths).  Interesting...

Is there any way to reproduce it without too much PITA?
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