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From: Xiaoyun Li <xiaoyun.li@intel.com>
To: jingjing.wu@intel.com
Cc: dev@dpdk.org,
Xiaoyun Li <xiaoyun.li@intel.com>,
stable@dpdk.org
Date: Mon, 5 Aug 2019 13:02:47 +0800
Message-Id: <20190805050247.28624-1-xiaoyun.li@intel.com>
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Subject: [dpdk-dev] [PATCH] raw/ntb: fix null pointer dereference
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This patch fixes null pointer dereference issues found by coverity scan.
Coverity issue: 344981, 344991, 345000, 345002, 345006, 345024
Fixes: 277310027965 ("raw/ntb: introduce NTB raw device driver")
Cc: stable@dpdk.org
Signed-off-by: Xiaoyun Li <xiaoyun.li@intel.com>
---
drivers/raw/ntb/ntb.c | 18 +++++++++++-------
1 file changed, 11 insertions(+), 7 deletions(-)
diff --git a/drivers/raw/ntb/ntb.c b/drivers/raw/ntb/ntb.c
index 4ba2f3a38..bfecce1e4 100644
--- a/drivers/raw/ntb/ntb.c
+++ b/drivers/raw/ntb/ntb.c
@@ -447,14 +447,16 @@ static int
ntb_attr_set(struct rte_rawdev *dev, const char *attr_name,
uint64_t attr_value)
{
- struct ntb_hw *hw = dev->dev_private;
- int index = 0;
+ struct ntb_hw *hw;
+ int index;
if (dev == NULL || attr_name == NULL) {
NTB_LOG(ERR, "Invalid arguments for setting attributes");
return -EINVAL;
}
+ hw = dev->dev_private;
+
if (!strncmp(attr_name, NTB_SPAD_USER, NTB_SPAD_USER_LEN)) {
if (hw->ntb_ops->spad_write == NULL)
return -ENOTSUP;
@@ -475,14 +477,16 @@ static int
ntb_attr_get(struct rte_rawdev *dev, const char *attr_name,
uint64_t *attr_value)
{
- struct ntb_hw *hw = dev->dev_private;
- int index = 0;
+ struct ntb_hw *hw;
+ int index;
if (dev == NULL || attr_name == NULL || attr_value == NULL) {
NTB_LOG(ERR, "Invalid arguments for getting attributes");
return -EINVAL;
}
+ hw = dev->dev_private;
+
if (!strncmp(attr_name, NTB_TOPO_NAME, NTB_ATTR_NAME_LEN)) {
*attr_value = hw->topo;
NTB_LOG(INFO, "Attribute (%s) Value (%" PRIu64 ")",
@@ -735,7 +739,7 @@ ntb_create(struct rte_pci_device *pci_dev, int socket_id)
if (pci_dev == NULL) {
NTB_LOG(ERR, "Invalid pci_dev.");
- ret = -EINVAL;
+ return -EINVAL;
}
memset(name, 0, sizeof(name));
@@ -750,7 +754,7 @@ ntb_create(struct rte_pci_device *pci_dev, int socket_id)
socket_id);
if (rawdev == NULL) {
NTB_LOG(ERR, "Unable to allocate rawdev.");
- ret = -EINVAL;
+ return -EINVAL;
}
rawdev->dev_ops = &ntb_ops;
@@ -766,7 +770,7 @@ ntb_create(struct rte_pci_device *pci_dev, int socket_id)
return ret;
fail:
- if (rawdev)
+ if (rawdev != NULL)
rte_rawdev_pmd_release(rawdev);
return ret;
--
2.17.1