linux-kernel - Re: [PATCH rdma-next] Revert "RDMA/core: Fix ib_qp_usecnt

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Date:   Wed, 16 Mar 2022 10:12:55 +0200
From:   Leon Romanovsky <leon@...nel.org>
To:     Jason Gunthorpe <jgg@...dia.com>
Cc:     linux-kernel@...r.kernel.org, linux-rdma@...r.kernel.org,
        Yajun Deng <yajun.deng@...ux.dev>
Subject: Re: [PATCH rdma-next] Revert "RDMA/core: Fix ib_qp_usecnt_dec()
 called when error"

On Mon, Mar 14, 2022 at 08:44:50PM -0300, Jason Gunthorpe wrote:
> On Wed, Mar 09, 2022 at 08:42:13PM +0200, Leon Romanovsky wrote:
> > From: Leon Romanovsky <leonro@...dia.com>
> > 
> > This reverts commit 7c4a539ec38f4ce400a0f3fcb5ff6c940fcd67bb. which
> > causes to the following error in mlx4.
> 
> Dare I ask why this happens?

I didn't debug it, but my guess is that mistake is in relation between
xrc_qp and qp (real_qp).

Thanks

> 
> Applied to for-next 
> 
> Thanks,
> Jason