IB/hfi1: Ensure ucast_dlid access doesnt exceed bounds
[ Upstream commit 3144533b ] The dlid assignment made by looking into the u_ucast_dlid array does not do an explicit check for the size of the array. The code path to arrive at def_port, the index value is long and complicated so its best to just have an explicit check here. Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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