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IB/i40iw: Fix error code in i40iw_create_cq() 

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: d374984179 ("i40iw: add files for iwarp interface")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Dan Carpenter 2017-07-13 10:47:22 +03:00 committed by Doug Ledford
parent 5c8857b653
commit 6031e079aa
1 changed files with 3 additions and 1 deletions
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4
drivers/infiniband/hw/i40iw/i40iw_verbs.c
View File

@ -1168,8 +1168,10 @@ 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,