Re: [PATCH] IB/mlx5: Fix missing destroy_workqueue on error unwind

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On Fri, Dec 21, 2018 at 03:35:46AM +0000, Jason Gunthorpe wrote:
> On Thu, Dec 20, 2018 at 04:48:29PM -0700, Mark Bloch wrote:
> >
> >
> > On 12/20/18 3:42 PM, Jason Gunthorpe wrote:
> > > It got complicated because of the #ifdef.
> > >
> > > Fixes: 813e90b1aeaa ("IB/mlx5: Add advise_mr() support")
> > > Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
> > >  drivers/infiniband/hw/mlx5/main.c | 4 +++-
> > >  1 file changed, 3 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
> > > index 9b40ec73cc646c..cefff6b05d6cc9 100644
> > > +++ b/drivers/infiniband/hw/mlx5/main.c
> > > @@ -5779,8 +5779,10 @@ int mlx5_ib_stage_init_init(struct mlx5_ib_dev *dev)
> > >  	}
> > >
> > >  	err = init_srcu_struct(&dev->mr_srcu);
> > > -	if (err)
> > > +	if (err) {
> > > +		destroy_workqueue(dev->advise_mr_wq);
> > >  		goto err_free_port;
> > > +	}
> >
> > Shouldn't this be: goto err_mp ?
>
> Sure looks like it, doesn't it? Also the goto above!
>
> Thanks,
> Jason
>
> commit be8bb738488bf137477ea6c7008de39231e72805 (HEAD -> tmp)
> Author: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
> Date:   Thu Dec 20 16:39:26 2018 -0700
>
>     IB/mlx5: Fix wrong error unwind
>
>     The destroy_workqueue on error unwind is missing, and the code jumps to
>     the wrong exit label.
>
>     Fixes: 813e90b1aeaa ("IB/mlx5: Add advise_mr() support")
>     Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
>
>

Thanks,
Acked-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>

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