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IB/qib: Fix local access validation for user MRs

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Commit 8aac4cc3a9 ("IB/qib: RCU locking for MR validation") introduced
a bug that broke user post sends.  The proper validation of the MR
was lost in the patch.

This patch corrects that validation.

Reviewed-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Mike Marciniszyn 2012-09-28 17:33:52 +00:00 committed by Roland Dreier
parent e20d583818
commit c00aaa1a02
1 changed files with 3 additions and 2 deletions
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5
drivers/infiniband/hw/qib/qib_keys.c
View file

@ -186,8 +186,9 @@ int qib_lkey_ok(struct qib_lkey_table *rkt, struct qib_pd *pd,
goto bail;
off = sge->addr - mr->user_base;
if (unlikely(sge->addr < mr->iova || off + sge->length > mr->length ||
(mr->access_flags & acc) == 0))
if (unlikely(sge->addr < mr->user_base ||
off + sge->length > mr->length ||
(mr->access_flags & acc) != acc))
goto bail;
if (unlikely(!atomic_inc_not_zero(&mr->refcount)))
goto bail;