From: Leon Romanovsky leonro@nvidia.com
commit 3c638cdb8ecc0442552156e0fed8708dd2c7f35b upstream.
xa_alloc_cyclic() call returns positive number if ID allocation succeeded but wrapped. It is not an error, so normalize the "ret" variable to zero as marker of not-an-error.
drivers/infiniband/core/restrack.c:261 rdma_restrack_add() warn: 'ret' can be either negative or positive
Fixes: fd47c2f99f04 ("RDMA/restrack: Convert internal DB from hash to XArray") Link: https://lore.kernel.org/r/20201216100753.1127638-1-leon@kernel.org Reported-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Leon Romanovsky leonro@nvidia.com Signed-off-by: Jason Gunthorpe jgg@nvidia.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/infiniband/core/restrack.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/infiniband/core/restrack.c +++ b/drivers/infiniband/core/restrack.c @@ -234,6 +234,7 @@ static void rdma_restrack_add(struct rdm } else { ret = xa_alloc_cyclic(&rt->xa, &res->id, res, xa_limit_32b, &rt->next_id, GFP_KERNEL); + ret = (ret < 0) ? ret : 0; }
if (!ret)