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Commit 9950acf9 authored by Leon Romanovsky's avatar Leon Romanovsky Committed by Doug Ledford
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RDMA/cxgb4: Protect from possible dereference 



Smatch tool reports the following error:
  drivers/infiniband/hw/cxgb4/qp.c:1886
	c4iw_create_qp() error: we previously assumed 'ucontext'
	could be null (see line 1804)

Cc: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
Reviewed-by: default avatarSteve Wise <swise@opengridcomputing.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent e32d2d71

drivers/infiniband/hw/cxgb4/qp.c

+1 −1
Original line number Diff line number Diff line
@@ -1843,7 +1843,7 @@ struct ib_qp *c4iw_create_qp(struct ib_pd *pd, struct ib_qp_init_attr *attrs, 
	if (ret)

		goto err_destroy_qp;



	if (udata) {

	if (udata && ucontext) {

		sq_key_mm = kmalloc(sizeof(*sq_key_mm), GFP_KERNEL);

		if (!sq_key_mm) {

			ret = -ENOMEM;