[dpdk-dev] [PATCH v3 1/4] raw/ifpga_rawdev: fix use of untrusted scalar value

Xu, Rosen rosen.xu at intel.com
Tue Jun 11 04:29:20 CEST 2019



> -----Original Message-----
> From: Zhang, Tianfei
> Sent: Monday, June 10, 2019 23:52
> To: dev at dpdk.org; Xu, Rosen <rosen.xu at intel.com>; stable at dpdk.org
> Cc: Zhang, Tianfei <tianfei.zhang at intel.com>
> Subject: [PATCH v3 1/4] raw/ifpga_rawdev: fix use of untrusted scalar value
> 
> Add checking the buffer size and use
> const char * for buffer declaration.
> 
> Coverity issue: 279449
> Fixes: ef1e8ede ("raw/ifpga: add Intel FPGA bus rawdev driver")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Tianfei zhang <tianfei.zhang at intel.com>
> ---
>  drivers/raw/ifpga_rawdev/base/ifpga_api.c     |  4 +--
>  drivers/raw/ifpga_rawdev/base/ifpga_api.h     |  2 +-
>  .../raw/ifpga_rawdev/base/ifpga_feature_dev.h |  2 +-
> drivers/raw/ifpga_rawdev/base/ifpga_fme_pr.c  | 27 +++++++++++--------
>  drivers/raw/ifpga_rawdev/base/opae_hw_api.c   |  4 +--
>  drivers/raw/ifpga_rawdev/base/opae_hw_api.h   |  4 +--
>  drivers/raw/ifpga_rawdev/ifpga_rawdev.c       |  7 ++++-
>  7 files changed, 30 insertions(+), 20 deletions(-)
> 
> diff --git a/drivers/raw/ifpga_rawdev/base/ifpga_api.c
> b/drivers/raw/ifpga_rawdev/base/ifpga_api.c
> index 3ddbcdc2a..53d101daf 100644
> --- a/drivers/raw/ifpga_rawdev/base/ifpga_api.c
> +++ b/drivers/raw/ifpga_rawdev/base/ifpga_api.c
> @@ -182,7 +182,7 @@ struct opae_bridge_ops ifpga_br_ops = {  };
> 
>  /* Manager APIs */
> -static int ifpga_mgr_flash(struct opae_manager *mgr, int id, void *buf,
> +static int ifpga_mgr_flash(struct opae_manager *mgr, int id, const char
> +*buf,
>  			   u32 size, u64 *status)
>  {
>  	struct ifpga_fme_hw *fme = mgr->data;
> @@ -324,7 +324,7 @@ struct opae_adapter_ops ifpga_adapter_ops = {
>   *   - 0: Success, partial reconfiguration finished.
>   *   - <0: Error code returned in partial reconfiguration.
>   **/
> -int ifpga_pr(struct ifpga_hw *hw, u32 port_id, void *buffer, u32 size,
> +int ifpga_pr(struct ifpga_hw *hw, u32 port_id, const char *buffer, u32
> +size,
>  	     u64 *status)
>  {
>  	if (!is_valid_port_id(hw, port_id))
> diff --git a/drivers/raw/ifpga_rawdev/base/ifpga_api.h
> b/drivers/raw/ifpga_rawdev/base/ifpga_api.h
> index 4a247698c..051ab8276 100644
> --- a/drivers/raw/ifpga_rawdev/base/ifpga_api.h
> +++ b/drivers/raw/ifpga_rawdev/base/ifpga_api.h
> @@ -23,7 +23,7 @@ int ifpga_set_irq(struct ifpga_hw *hw, u32 fiu_id, u32
> port_id,
>  		  u32 feature_id, void *irq_set);
> 
>  /* FME APIs */
> -int ifpga_pr(struct ifpga_hw *hw, u32 port_id, void *buffer, u32 size,
> +int ifpga_pr(struct ifpga_hw *hw, u32 port_id, const char *buffer, u32
> +size,
>  	     u64 *status);
> 
>  #endif /* _IFPGA_API_H_ */
> diff --git a/drivers/raw/ifpga_rawdev/base/ifpga_feature_dev.h
> b/drivers/raw/ifpga_rawdev/base/ifpga_feature_dev.h
> index bb9fcc289..e243d4273 100644
> --- a/drivers/raw/ifpga_rawdev/base/ifpga_feature_dev.h
> +++ b/drivers/raw/ifpga_rawdev/base/ifpga_feature_dev.h
> @@ -149,7 +149,7 @@ static inline int fpga_port_reset(struct ifpga_port_hw
> *port)
>  	return ret;
>  }
> 
> -int do_pr(struct ifpga_hw *hw, u32 port_id, void *buffer, u32 size,
> +int do_pr(struct ifpga_hw *hw, u32 port_id, const char *buffer, u32
> +size,
>  	  u64 *status);
> 
>  int fme_get_prop(struct ifpga_fme_hw *fme, struct feature_prop *prop);
> diff --git a/drivers/raw/ifpga_rawdev/base/ifpga_fme_pr.c
> b/drivers/raw/ifpga_rawdev/base/ifpga_fme_pr.c
> index efa72660f..9997942d2 100644
> --- a/drivers/raw/ifpga_rawdev/base/ifpga_fme_pr.c
> +++ b/drivers/raw/ifpga_rawdev/base/ifpga_fme_pr.c
> @@ -223,8 +223,8 @@ static int fpga_pr_buf_load(struct ifpga_fme_hw
> *fme_dev,
>  	return 0;
>  }
> 
> -static int fme_pr(struct ifpga_hw *hw, u32 port_id, void *buffer, u32 size,
> -		  u64 *status)
> +static int fme_pr(struct ifpga_hw *hw, u32 port_id, const char *buffer,
> +		u32 size, u64 *status)
>  {
>  	struct feature_fme_header *fme_hdr;
>  	struct feature_fme_capability fme_capability; @@ -269,7 +269,7 @@
> static int fme_pr(struct ifpga_hw *hw, u32 port_id, void *buffer, u32 size,
>  	/* Disable Port before PR */
>  	fpga_port_disable(port);
> 
> -	ret = fpga_pr_buf_load(fme, &info, (void *)buffer, size);
> +	ret = fpga_pr_buf_load(fme, &info, buffer, size);
> 
>  	*status = info.pr_err;
> 
> @@ -280,27 +280,32 @@ static int fme_pr(struct ifpga_hw *hw, u32 port_id,
> void *buffer, u32 size,
>  	return ret;
>  }
> 
> -int do_pr(struct ifpga_hw *hw, u32 port_id, void *buffer, u32 size, u64
> *status)
> +int do_pr(struct ifpga_hw *hw, u32 port_id, const char *buffer,
> +		u32 size, u64 *status)
>  {
> -	struct bts_header *bts_hdr;
> -	void *buf;
> +	const struct bts_header *bts_hdr;
> +	const char *buf;
>  	struct ifpga_port_hw *port;
>  	int ret;
> +	u32 header_size;
> 
>  	if (!buffer || size == 0) {
>  		dev_err(hw, "invalid parameter\n");
>  		return -EINVAL;
>  	}
> 
> -	bts_hdr = (struct bts_header *)buffer;
> +	bts_hdr = (const struct bts_header *)buffer;
> 
>  	if (is_valid_bts(bts_hdr)) {
>  		dev_info(hw, "this is a valid bitsteam..\n");
> -		size -= (sizeof(struct bts_header) +
> -				     bts_hdr->metadata_len);
> -		buf = (u8 *)buffer + sizeof(struct bts_header) +
> -			       bts_hdr->metadata_len;
> +		header_size = sizeof(struct bts_header) +
> +			bts_hdr->metadata_len;
> +		if (size < header_size)
> +			return -EINVAL;
> +		size -= header_size;
> +		buf = buffer + header_size;
>  	} else {
> +		dev_err(hw, "this is an invalid bitstream..\n");
>  		return -EINVAL;
>  	}
> 
> diff --git a/drivers/raw/ifpga_rawdev/base/opae_hw_api.c
> b/drivers/raw/ifpga_rawdev/base/opae_hw_api.c
> index 0e117d05e..8964e7984 100644
> --- a/drivers/raw/ifpga_rawdev/base/opae_hw_api.c
> +++ b/drivers/raw/ifpga_rawdev/base/opae_hw_api.c
> @@ -244,8 +244,8 @@ opae_manager_alloc(const char *name, struct
> opae_manager_ops *ops,
>   *
>   * Return: 0 on success, otherwise error code.
>   */
> -int opae_manager_flash(struct opae_manager *mgr, int id, void *buf, u32
> size,
> -		       u64 *status)
> +int opae_manager_flash(struct opae_manager *mgr, int id, const char *buf,
> +		u32 size, u64 *status)
>  {
>  	if (!mgr)
>  		return -EINVAL;
> diff --git a/drivers/raw/ifpga_rawdev/base/opae_hw_api.h
> b/drivers/raw/ifpga_rawdev/base/opae_hw_api.h
> index 383e751cb..63405a471 100644
> --- a/drivers/raw/ifpga_rawdev/base/opae_hw_api.h
> +++ b/drivers/raw/ifpga_rawdev/base/opae_hw_api.h
> @@ -44,7 +44,7 @@ struct opae_manager {
> 
>  /* FIXME: add more management ops, e.g power/thermal and etc */  struct
> opae_manager_ops {
> -	int (*flash)(struct opae_manager *mgr, int id, void *buffer,
> +	int (*flash)(struct opae_manager *mgr, int id, const char *buffer,
>  		     u32 size, u64 *status);
>  	int (*get_eth_group_region_info)(struct opae_manager *mgr,
>  			struct opae_eth_group_region_info *info); @@ -74,7
> +74,7 @@ struct opae_manager *  opae_manager_alloc(const char *name,
> struct opae_manager_ops *ops,
>  		struct opae_manager_networking_ops *network_ops, void
> *data);  #define opae_manager_free(mgr) opae_free(mgr) -int
> opae_manager_flash(struct opae_manager *mgr, int acc_id, void *buf,
> +int opae_manager_flash(struct opae_manager *mgr, int acc_id, const char
> +*buf,
>  		       u32 size, u64 *status);
>  int opae_manager_get_eth_group_region_info(struct opae_manager *mgr,
>  		u8 group_id, struct opae_eth_group_region_info *info); diff -
> -git a/drivers/raw/ifpga_rawdev/ifpga_rawdev.c
> b/drivers/raw/ifpga_rawdev/ifpga_rawdev.c
> index 41be1a205..01aa917de 100644
> --- a/drivers/raw/ifpga_rawdev/ifpga_rawdev.c
> +++ b/drivers/raw/ifpga_rawdev/ifpga_rawdev.c
> @@ -225,7 +225,7 @@ ifpga_rawdev_reset(struct rte_rawdev *dev)  }
> 
>  static int
> -fpga_pr(struct rte_rawdev *raw_dev, u32 port_id, u64 *buffer, u32 size,
> +fpga_pr(struct rte_rawdev *raw_dev, u32 port_id, const char *buffer,
> +u32 size,
>  			u64 *status)
>  {
> 
> @@ -296,6 +296,11 @@ rte_fpga_do_pr(struct rte_rawdev *rawdev, int
> port_id,
>  		goto close_fd;
>  	}
>  	buffer_size = file_stat.st_size;
> +	if (buffer_size <= 0) {
> +		ret = -EINVAL;
> +		goto close_fd;
> +	}
> +
>  	IFPGA_RAWDEV_PMD_INFO("bitstream file size: %zu\n", buffer_size);
>  	buffer = rte_malloc(NULL, buffer_size, 0);
>  	if (!buffer) {
> --
> 2.17.1

Acked-by: Rosen Xu <rosen.xu at intel.com>


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