RDMA/rxe: Fix "Replace mr by rkey in responder resources"

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The referenced commit generates a reference counting error if the rkey has
the same index but the wrong key. In this case the reference taken by
rxe_pool_get_index() is not dropped.

Drop the reference if the keys don't match in rxe_recheck_mr().  Check
that the mw and mr are still valid.

Fixes: 8a1a0be894 ("RDMA/rxe: Replace mr by rkey in responder resources")
Link: https://lore.kernel.org/r/20220411030647.20011-1-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

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Bob Pearson 2022-04-10 22:06:48 -05:00 • committed by Jason Gunthorpe

parent ce522ba9ef

commit 290c4a902b

1 changed files with 17 additions and 8 deletions

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drivers/infiniband/sw/rxe/rxe_resp.c

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