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Commit 7d9c199a authored by Tatyana Nikolova's avatar Tatyana Nikolova Committed by Roland Dreier
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RDMA/nes: Fix for crash when registering zero length MR for CQ 



Signed-off-by: default avatarTatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: default avatarRoland Dreier <roland@purestorage.com>
parent 7bfcfa51

drivers/infiniband/hw/nes/nes_verbs.c

+5 −0
Original line number Diff line number Diff line
@@ -2561,6 +2561,11 @@ static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, 
			return ibmr;

		case IWNES_MEMREG_TYPE_QP:

		case IWNES_MEMREG_TYPE_CQ:

			if (!region->length) {

				nes_debug(NES_DBG_MR, "Unable to register zero length region for CQ\n");

				ib_umem_release(region);

				return ERR_PTR(-EINVAL);

			}

			nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);

			if (!nespbl) {

				nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");