Commit f7b42633 authored Mar 20, 2017 by Michael J. Ruhl Committed by Doug Ledford Apr 05, 2017

IB/hfi1: Ensure VL index is within bounds



Improve the safety of the code and ensure the array cannot be indexed
out of bounds when picking the CPU for a given SDMA engine.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

parent 44dcfa4b

drivers/infiniband/hw/hfi1/sdma.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -962,6 +962,11 @@ ssize_t sdma_set_cpu_to_sde_map(struct sdma_engine sde, const char buf,
		continue;
		}

		if (vl >= ARRAY_SIZE(rht_node->map)) {
		ret = -EINVAL;
		goto out;
		}

		rht_node = rhashtable_lookup_fast(dd->sdma_rht, &cpu,
		sdma_rht_params);
		if (!rht_node) {