3.0-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tatyana Nikolova <tatyana.e.nikol...@intel.com>
commit 7d9c199a55200c9b9fcad08e150470d02fb385be upstream.
Signed-off-by: Tatyana Nikolova <tatyana.e.nikol...@intel.com>
Signed-off-by: Roland Dreier <rol...@purestorage.com>
Signed-off-by: CAI Qian <caiq...@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/infiniband/hw/nes/nes_verbs.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/infiniband/hw/nes/nes_verbs.c
+++ b/drivers/infiniband/hw/nes/nes_verbs.c
@@ -2568,6 +2568,11 @@ static struct ib_mr *nes_reg_user_mr(str
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");
--
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