Re: [PATCH for-rc 7/7] IB/hfi1: Add limit test for RC/UC send via loopback

[Jason Gunthorpe <jgg@ziepe.ca>]

On Thu, Jan 17, 2019 at 12:42:16PM -0800, Dennis Dalessandro wrote:
> From: Mike Marciniszyn <mike.marciniszyn@intel.com>
> 
> Fix potential memory corruption and panic in loopback for
> IB_WR_SEND variants.
> 
> The code blindly assumes the posted length will fit in the
> fetched rwqe, which is not a valid assumption.
> 
> Fix by adding a limit test, and triggering the appropriate
> send completion and putting the QP in an error state.  This
> mimics the handling for non-loopback QPs.
> 
> Fixes: 15703461533a ("IB/{hfi1, qib, rdmavt}: Move ruc_loopback to rdmavt")
> Cc: <stable@vger.kernel.org> #v4.20+
> Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
> ---
>  drivers/infiniband/sw/rdmavt/qp.c |    7 ++++++-
>  1 files changed, 6 insertions(+), 1 deletions(-)

Applied to for-rc

Thanks,
Jason