diff options
| author | Mike Marciniszyn <mike.marciniszyn@intel.com> | 2012-09-28 21:33:52 +0400 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2012-10-01 20:59:26 +0400 |
| commit | c00aaa1a0221a22153071fcb2f320e2ebaecc2fd (patch) | |
| tree | d4d4d23b4dd1529c9315a8914a588c4669ea7c41 /drivers/infiniband | |
| parent | e20d583818a5d6fc052e59fe2345d82ffd089462 (diff) | |
| download | linux-c00aaa1a0221a22153071fcb2f320e2ebaecc2fd.tar.xz | |
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 <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>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | 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 e9486c74c226..81c7b73695d2 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; |