diff options
| author | Tatyana Nikolova <Tatyana.E.Nikolova@intel.com> | 2012-12-06 20:05:02 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-17 08:46:11 -0800 |
| commit | 02c397211c58c77fab36c7ec77fdf1f8db6d2f74 (patch) | |
| tree | e800397ae1ea6d823acebb362797dd799c5bbda5 | |
| parent | b8a9600a6d5c59aefef8e4c45f10815d24170060 (diff) | |
RDMA/nes: Fix for crash when registering zero length MR for CQ
commit 7d9c199a55200c9b9fcad08e150470d02fb385be upstream.
Signed-off-by: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: CAI Qian <caiqian@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/infiniband/hw/nes/nes_verbs.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/nes/nes_verbs.c b/drivers/infiniband/hw/nes/nes_verbs.c index cd0ecb215cc..928ca350b17 100644 --- a/drivers/infiniband/hw/nes/nes_verbs.c +++ b/drivers/infiniband/hw/nes/nes_verbs.c @@ -2559,6 +2559,11 @@ static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, return ibmr; case IWNES_MEMREG_TYPE_QP: case IWNES_MEMREG_TYPE_CQ: + if (!region->length) { + nes_debug(NES_DBG_MR, "Unable to register zero length region for CQ\n"); + ib_umem_release(region); + return ERR_PTR(-EINVAL); + } nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL); if (!nespbl) { nes_debug(NES_DBG_MR, "Unable to allocate PBL\n"); |