commit: c00aaa1a0221a22153071fcb2f320e2ebaecc2fd
From: Mike Marciniszyn <[email protected]>
Date: Fri, 28 Sep 2012 17:33:52 +0000
Subject: IB/qib: Fix local access validation for user MRs
Commit 8aac4cc3a9d7 ("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 <[email protected]>
Signed-off-by: Mike Marciniszyn <[email protected]>
Cc: <[email protected]>
Signed-off-by: Roland Dreier <[email protected]>
---
drivers/infiniband/hw/qib/qib_keys.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/infiniband/hw/qib/qib_keys.c
b/drivers/infiniband/hw/qib/qib_keys.c
index e9486c7..81c7b73 100644
--- a/drivers/infiniband/hw/qib/qib_keys.c
+++ b/drivers/infiniband/hw/qib/qib_keys.c
@@ -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;
--
1.7.3.4
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