RDMA/ucma: Fix refcount 0 incr in ucma_get_ctx()

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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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Jason Gunthorpe 2020-08-18 15:05:13 +03:00

parent 7c4b1ab9f1

commit ca2968c1ef

1 changed files with 2 additions and 2 deletions

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drivers/infiniband/core/ucma.c

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