Re: [PATCH] nvme-rdma: fix null pointer dereference on req->mr

From: Christoph Hellwig
Date: Tue Sep 06 2016 - 02:24:41 EST


On Mon, Sep 05, 2016 at 04:24:38PM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>
> If there is an error on req->mr, req->mr is set to null, however
> the following statement sets req->mr->need_inval causing a null
> pointer dereference. Fix this by bailing out to label 'out' to
> immediately return and hence skip over the offending null pointer
> dereference.
>
> Fixes: f5b7b559e1488 ("nvme-rdma: Get rid of duplicate variable")
> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>

Looks fine,

Reviewed-by: Christoph Hellwig <hch@xxxxxx>