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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2018-07-04 12:32:12 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-10-03 17:00:47 -0700 |
| commit | 0ca45668ecdb274fa861f0e863d6c1f0250060c8 (patch) | |
| tree | 414b632d82a3955c4736ce444a9723de6d975b04 /drivers/infiniband | |
| parent | eca8598823596b740c6ef498a7c940a4ced45efa (diff) | |
| download | linux-rt-0ca45668ecdb274fa861f0e863d6c1f0250060c8.tar.gz | |
IB/core: type promotion bug in rdma_rw_init_one_mr()
[ Upstream commit c2d7c8ff89b22ddefb1ac2986c0d48444a667689 ]
"nents" is an unsigned int, so if ib_map_mr_sg() returns a negative
error code then it's type promoted to a high unsigned int which is
treated as success.
Fixes: a060b5629ab0 ("IB/core: generic RDMA READ/WRITE API")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/core/rw.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/core/rw.c b/drivers/infiniband/core/rw.c index 6ca607e8e293..9939dcfb1b6a 100644 --- a/drivers/infiniband/core/rw.c +++ b/drivers/infiniband/core/rw.c @@ -87,7 +87,7 @@ static int rdma_rw_init_one_mr(struct ib_qp *qp, u8 port_num, } ret = ib_map_mr_sg(reg->mr, sg, nents, &offset, PAGE_SIZE); - if (ret < nents) { + if (ret < 0 || ret < nents) { ib_mr_pool_put(qp, &qp->rdma_mrs, reg->mr); return -EINVAL; } |