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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Leon Romanovsky <leonro@mellanox.com>,
	Jason Gunthorpe <jgg@mellanox.com>,
	Sasha Levin <sashal@kernel.org>,
	linux-rdma@vger.kernel.org
Subject: [PATCH AUTOSEL 5.4 086/205] RDMA/mlx5: Return proper error value
Date: Thu, 16 Jan 2020 11:41:01 -0500
Message-ID: <20200116164300.6705-86-sashal@kernel.org> (raw)
In-Reply-To: <20200116164300.6705-1-sashal@kernel.org>

From: Leon Romanovsky <leonro@mellanox.com>

[ Upstream commit 546d30099ed204792083f043cd7e016de86016a3 ]

Returned value from mlx5_mr_cache_alloc() is checked to be error or real
pointer. Return proper error code instead of NULL which is not checked
later.

Fixes: 81713d3788d2 ("IB/mlx5: Add implicit MR support")
Link: https://lore.kernel.org/r/20191029055721.7192-1-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/infiniband/hw/mlx5/mr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c
index 7019c12005f4..99d563dba91b 100644
--- a/drivers/infiniband/hw/mlx5/mr.c
+++ b/drivers/infiniband/hw/mlx5/mr.c
@@ -428,7 +428,7 @@ struct mlx5_ib_mr *mlx5_mr_cache_alloc(struct mlx5_ib_dev *dev, int entry)
 
 	if (entry < 0 || entry >= MAX_MR_CACHE_ENTRIES) {
 		mlx5_ib_err(dev, "cache entry %d is out of range\n", entry);
-		return NULL;
+		return ERR_PTR(-EINVAL);
 	}
 
 	ent = &cache->ent[entry];
-- 
2.20.1


  parent reply index

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200116164300.6705-1-sashal@kernel.org>
2020-01-16 16:39 ` [PATCH AUTOSEL 5.4 009/205] RDMA/counter: Prevent QP counter manual binding in auto mode Sasha Levin
2020-01-16 16:39 ` [PATCH AUTOSEL 5.4 010/205] RDMA/siw: Fix port number endianness in a debug message Sasha Levin
2020-01-16 16:40 ` [PATCH AUTOSEL 5.4 054/205] RDMA/hns: Release qp resources when failed to destroy qp Sasha Levin
2020-01-16 16:40 ` [PATCH AUTOSEL 5.4 074/205] RDMA/hns: Prevent undefined behavior in hns_roce_set_user_sq_size() Sasha Levin
2020-01-16 16:40 ` [PATCH AUTOSEL 5.4 075/205] RDMA/hns: Fix to support 64K page for srq Sasha Levin
2020-01-16 16:40 ` [PATCH AUTOSEL 5.4 076/205] RDMA/hns: Bugfix for qpc/cqc timer configuration Sasha Levin
2020-01-16 16:40 ` [PATCH AUTOSEL 5.4 081/205] RDMA/hns: Fix build error again Sasha Levin
2020-01-16 16:41 ` Sasha Levin [this message]
2020-01-16 16:42 ` [PATCH AUTOSEL 5.4 195/205] net/mlx5e: Fix free peer_flow when refcount is 0 Sasha Levin

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