From: Ye Xiaolong <xiaolong.ye@intel.com>
To: Xiaoyun Li <xiaoyun.li@intel.com>
Cc: jingjing.wu@intel.com, dev@dpdk.org, stable@dpdk.org
Subject: Re: [dpdk-stable] [dpdk-dev] [PATCH] raw/ntb: fix null pointer dereference
Date: Mon, 5 Aug 2019 13:50:41 +0800 [thread overview]
Message-ID: <20190805055041.GF51603@intel.com> (raw)
In-Reply-To: <20190805050247.28624-1-xiaoyun.li@intel.com>
On 08/05, Xiaoyun Li wrote:
>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
>
Reviewed-by: Xiaolong Ye <xiaolong.ye@intel.com>
next prev parent reply other threads:[~2019-08-05 5:51 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-05 5:02 [dpdk-stable] " Xiaoyun Li
2019-08-05 5:50 ` Ye Xiaolong [this message]
2019-08-06 7:58 ` [dpdk-stable] [dpdk-dev] " Thomas Monjalon
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