From: Leon Romanovsky <leon@kernel.org>
To: trix@redhat.com
Cc: selvin.xavier@broadcom.com, devesh.sharma@broadcom.com,
dledford@redhat.com, jgg@ziepe.ca, maxg@mellanox.com,
galpress@amazon.com, michaelgur@nvidia.com, monis@mellanox.com,
gustavoars@kernel.org, linux-rdma@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] RDMA/ocrdma: fix use after free in ocrdma_dealloc_ucontext_pd()
Date: Wed, 30 Dec 2020 07:31:25 +0200 [thread overview]
Message-ID: <20201230053125.GB6438@unreal> (raw)
In-Reply-To: <20201230024653.1516495-1-trix@redhat.com>
On Tue, Dec 29, 2020 at 06:46:53PM -0800, trix@redhat.com wrote:
> From: Tom Rix <trix@redhat.com>
>
> In ocrdma_dealloc_ucontext_pd() uctx->cntxt_pd is assigned to
> the variable pd and then after uctx->cntxt_pd is freed, the
> variable pd is passed to function _ocrdma_dealloc_pd() which
> dereferences pd directly or through its call to
> ocrdma_mbx_dealloc_pd().
>
> Reorder the free using the variable pd.
>
> Fixes: 21a428a019c9 ("RDMA: Handle PD allocations by IB/core")
> Signed-off-by: Tom Rix <trix@redhat.com>
> ---
> drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
Thanks,
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
next prev parent reply other threads:[~2020-12-30 5:32 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-30 2:46 [PATCH] RDMA/ocrdma: fix use after free in ocrdma_dealloc_ucontext_pd() trix
2020-12-30 5:31 ` Leon Romanovsky [this message]
2021-01-07 20:41 ` Jason Gunthorpe
2021-01-07 21:43 ` Tom Rix
2021-01-11 18:09 ` Selvin Xavier
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