From: "Gustavo A. R. Silva" <garsilva@embeddedor.com>
To: Doug Ledford <dledford@redhat.com>,
Sean Hefty <sean.hefty@intel.com>,
Hal Rosenstock <hal.rosenstock@gmail.com>
Cc: linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org,
"Gustavo A. R. Silva" <garsilva@embeddedor.com>
Subject: [PATCH] infiniband: hw: qedr: add null check before pointer dereference
Date: Mon, 22 May 2017 13:30:15 -0500 [thread overview]
Message-ID: <20170522183015.GA22310@embeddedgus> (raw)
Add null check before dereferencing pointer sgid_attr.ndev
inside function rdma_vlan_dev_vlan_id().
Addresses-Coverity-ID: 1373979
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
---
drivers/infiniband/hw/qedr/qedr_cm.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/infiniband/hw/qedr/qedr_cm.c b/drivers/infiniband/hw/qedr/qedr_cm.c
index 3d7705c..d86dbe8 100644
--- a/drivers/infiniband/hw/qedr/qedr_cm.c
+++ b/drivers/infiniband/hw/qedr/qedr_cm.c
@@ -270,11 +270,13 @@ static inline int qedr_gsi_build_header(struct qedr_dev *dev,
return rc;
}
- vlan_id = rdma_vlan_dev_vlan_id(sgid_attr.ndev);
- if (vlan_id < VLAN_CFI_MASK)
- has_vlan = true;
- if (sgid_attr.ndev)
+ if (sgid_attr.ndev) {
+ vlan_id = rdma_vlan_dev_vlan_id(sgid_attr.ndev);
+ if (vlan_id < VLAN_CFI_MASK)
+ has_vlan = true;
+
dev_put(sgid_attr.ndev);
+ }
if (!memcmp(&sgid, &zgid, sizeof(sgid))) {
DP_ERR(dev, "gsi post send: GID not found GID index %d\n",
--
2.5.0
next reply other threads:[~2017-05-22 18:30 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-22 18:30 Gustavo A. R. Silva [this message]
2017-05-23 7:13 ` [PATCH] infiniband: hw: qedr: add null check before pointer dereference Leon Romanovsky
2017-05-23 15:03 ` Amrani, Ram
2017-05-23 15:09 ` Amrani, Ram
2017-06-01 22:32 ` Doug Ledford
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