| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.10 133/152] RDMA/restrack: Dont treat as an error allocation ID wrapping | Date | Mon, 18 Jan 2021 12:35:08 +0100 |
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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 @@ -244,6 +244,7 @@ void rdma_restrack_add(struct rdma_restr } 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)
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