We accidentally forgot to set the error code if ib_copy_from_udata()
fails. It means we return ERR_PTR(0) which is NULL and results in a
NULL dereference in the callers.
Fixes: d37498417947 ("i40iw: add files for iwarp interface")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
diff --git a/drivers/infiniband/hw/i40iw/i40iw_verbs.c b/drivers/infiniband/hw/i40iw/i40iw_verbs.c
index 4dbe61ec7a77..91f1631ff32d 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_verbs.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_verbs.c
@@ -1161,8 +1161,10 @@ static struct ib_cq *i40iw_create_cq(struct ib_device *ibdev,
memset(&req, 0, sizeof(req));
iwcq->user_mode = true;
ucontext = to_ucontext(context);
- if (ib_copy_from_udata(&req, udata, sizeof(struct i40iw_create_cq_req)))
+ if (ib_copy_from_udata(&req, udata, sizeof(struct i40iw_create_cq_req))) {
+ err_code = -EFAULT;
goto cq_free_resources;
+ }
spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
iwpbl = i40iw_get_pbl((unsigned long)req.user_cq_buffer,
--
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