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From: Jason Gunthorpe <jgg@ziepe.ca>
To: Michal Kalderon <michal.kalderon@marvell.com>
Cc: dledford@redhat.com, ariel.elior@marvell.com, linux-rdma@vger.kernel.org
Subject: Re: [PATCH rdma-next] RDMA/qedr: Fix null-pointer dereference when calling rdma_user_mmap_get_offset
Date: Tue, 19 Nov 2019 16:18:43 -0400	[thread overview]
Message-ID: <20191119201843.GA6720@ziepe.ca> (raw)
In-Reply-To: <20191118150645.26602-1-michal.kalderon@marvell.com>

On Mon, Nov 18, 2019 at 05:06:45PM +0200, Michal Kalderon wrote:
> When running against rdma-core that doesn't support doorbell
> recovery, the rdma_user_mmap_entry won't be allocated for
> doorbell recovery related mappings.
> We have a flag indicating whether rdma-core supports doorbell
> recovery or not which was used during initialization, however
> some cases didn't check that the rdma_user_mmap_entry exists
> before attempting to acquire it's offset.
> 
> Fixes: 97f612509294 ("RDMA/qedr: Add doorbell overflow recovery support")
> Signed-off-by: Ariel Elior <ariel.elior@marvell.com>
> Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
> ---
>  drivers/infiniband/hw/qedr/verbs.c | 15 ++++++++++-----
>  1 file changed, 10 insertions(+), 5 deletions(-)

Applied to for-next, thanks

Jason

      reply	other threads:[~2019-11-19 20:18 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-18 15:06 [PATCH rdma-next] RDMA/qedr: Fix null-pointer dereference when calling rdma_user_mmap_get_offset Michal Kalderon
2019-11-19 20:18 ` Jason Gunthorpe [this message]

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