Re: [PATCH 1/2] scsi_transport_fc: fix NULL pointer dereference in fc_bsg_job_timeout

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On Wed, Sep 06, 2017 at 06:59:39PM +0800, Ming Lei wrote:
> On Wed, Sep 6, 2017 at 6:11 PM, Christoph Hellwig <hch@xxxxxx> wrote:
> > bsg-lib now embeddeds the job structure into the request, and req->special
> > can't be used anymore.
> >
> > Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> > Cc: stable@xxxxxxxxxxxxxxx
> > ---
> >  drivers/scsi/scsi_transport_fc.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
> > index 3c6bc0081fcb..d8de46806a1e 100644
> > --- a/drivers/scsi/scsi_transport_fc.c
> > +++ b/drivers/scsi/scsi_transport_fc.c
> > @@ -3571,7 +3571,7 @@ fc_vport_sched_delete(struct work_struct *work)
> >  static enum blk_eh_timer_return
> >  fc_bsg_job_timeout(struct request *req)
> >  {
> > -       struct bsg_job *job = (void *) req->special;
> > +       struct bsg_job *job = blk_mq_rq_to_pdu(req->special);
> 
> still req->special?

Meh, sent out before the rebase finished - I'll fix it up.




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