ca2968c1ef
Both ucma_destroy_id() and ucma_close_id() (triggered from an event via a wq) can drive the refcount to zero. ucma_get_ctx() was wrongly assuming that the refcount can only go to zero from ucma_destroy_id() which also removes it from the xarray. Use refcount_inc_not_zero() instead. Link: https://lore.kernel.org/r/20200818120526.702120-2-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> |
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