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RDMA/mlx5: Fix udata response upon SRQ creation 

[ Upstream commit cf26deff9036cd3270af562dbec545239e5c7f07 ]

Fix udata response upon SRQ creation to use the UAPI structure (i.e.
mlx5_ib_create_srq_resp). It did not zero the reserved field in userspace.

Fixes: e126ba97db ("mlx5: Add driver for Mellanox Connect-IB adapters")
Link: https://lore.kernel.org/r/20200406173540.1466477-1-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yishai Hadas 2020-04-06 20:35:40 +03:00 committed by Greg Kroah-Hartman
parent 7acbadd1aa
commit 02416142fd
1 changed files with 8 additions and 2 deletions
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10
drivers/infiniband/hw/mlx5/srq.c
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@ -310,12 +310,18 @@ int mlx5_ib_create_srq(struct ib_srq *ib_srq,
srq->msrq.event = mlx5_ib_srq_event;
srq->ibsrq.ext.xrc.srq_num = srq->msrq.srqn;
if (udata)
if (ib_copy_to_udata(udata, &srq->msrq.srqn, sizeof(__u32))) {
if (udata) {
struct mlx5_ib_create_srq_resp resp = {
.srqn = srq->msrq.srqn,
};
if (ib_copy_to_udata(udata, &resp, min(udata->outlen,
sizeof(resp)))) {
mlx5_ib_dbg(dev, "copy to user failed\n");
err = -EFAULT;
goto err_core;
}
}
init_attr->attr.max_wr = srq->msrq.max - 1;