| Message ID | 20230222233237.48940-6-rpearsonhpe@gmail.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | RDMA/rxe: Correct qp reference counting | expand |
diff --git a/drivers/infiniband/sw/rxe/rxe_pool.c b/drivers/infiniband/sw/rxe/rxe_pool.c index 3f6bd672cc2d..1b160e36b751 100644 --- a/drivers/infiniband/sw/rxe/rxe_pool.c +++ b/drivers/infiniband/sw/rxe/rxe_pool.c @@ -244,6 +244,8 @@ int __rxe_get(struct rxe_pool_elem *elem) int __rxe_put(struct rxe_pool_elem *elem) { + if (WARN_ON(kref_read(&elem->ref_cnt) <= 0)) + return 0; return kref_put(&elem->ref_cnt, rxe_elem_release); }
This patch adds a WARN_ON if the reference count of the object passed to __rxe_put() is <= 0. This can only happen if the object has already been destroyed so the object will soon be deleted which is a driver bug. Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com> --- drivers/infiniband/sw/rxe/rxe_pool.c | 2 ++ 1 file changed, 2 insertions(+)