Re: CFQ - 2.5.70-mm3 BUGs

[Andrew Morton]

Con Kolivas <[e-mail]> wrote:
>
> I thought I'd give the cfq another run since some change has made it into this 
> patch and got these BUGs together (note, preempt enabled and UP +IDE):
> 
> ------------[ cut here ]------------
> kernel BUG at drivers/block/ll_rw_blk.c:1580!
> invalid operand: 0000 [#1]
> PREEMPT
> CPU:    0
> EIP:    0060:[<40257ff5>]    Not tainted VLI
> EFLAGS: 00010097
> EIP is at __blk_put_request+0x5d/0x108

That's

	BUG_ON(!list_empty(&req->queuelist));

I'm not aware of anyone testing CFQ much at present.