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From: "Xu, Rosen" <rosen.xu@intel.com>
To: "Huang, Wei" <wei.huang@intel.com>, "dev@dpdk.org" <dev@dpdk.org>,
	"thomas@monjalon.net" <thomas@monjalon.net>,
	"nipun.gupta@nxp.com" <nipun.gupta@nxp.com>,
	"hemant.agrawal@nxp.com" <hemant.agrawal@nxp.com>
Cc: "stable@dpdk.org" <stable@dpdk.org>,
	"Zhang, Tianfei" <tianfei.zhang@intel.com>,
	"Zhang, Qi Z" <qi.z.zhang@intel.com>
Subject: RE: [PATCH] raw/ifpga/base: check pointer before dereference
Date: Thu, 23 Jun 2022 06:25:15 +0000	[thread overview]
Message-ID: <DM6PR11MB4252758E98DAC3E43963429289B59@DM6PR11MB4252.namprd11.prod.outlook.com> (raw)
In-Reply-To: <1655953890-26163-1-git-send-email-wei.huang@intel.com>

Hi,

> -----Original Message-----
> From: Huang, Wei <wei.huang@intel.com>
> Sent: Thursday, June 23, 2022 11:12
> To: dev@dpdk.org; thomas@monjalon.net; nipun.gupta@nxp.com;
> hemant.agrawal@nxp.com
> Cc: stable@dpdk.org; Xu, Rosen <rosen.xu@intel.com>; Zhang, Tianfei
> <tianfei.zhang@intel.com>; Zhang, Qi Z <qi.z.zhang@intel.com>; Huang, Wei
> <wei.huang@intel.com>
> Subject: [PATCH] raw/ifpga/base: check pointer before dereference
> 
> Do null-checking on hw->adapter in fme_pmci_init() before dereference it.
> 
> Coverity issue: 379202
> Fixes: ca6eb0f7c836 ("raw/ifpga/base: add PMCI base driver")
> 
> Signed-off-by: Wei Huang <wei.huang@intel.com>
> ---
>  drivers/raw/ifpga/base/ifpga_fme.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/raw/ifpga/base/ifpga_fme.c
> b/drivers/raw/ifpga/base/ifpga_fme.c
> index 25ff819..b6dd4ce 100644
> --- a/drivers/raw/ifpga/base/ifpga_fme.c
> +++ b/drivers/raw/ifpga/base/ifpga_fme.c
> @@ -1591,7 +1591,7 @@ static int fme_pmci_init(struct ifpga_feature
> *feature)
>  	int ret = 0;
> 
>  	hw = fme->parent;
> -	if (!hw)
> +	if (!hw || !hw->adapter)
>  		return -ENODEV;
> 
>  	mgr = hw->adapter->mgr;
> @@ -1608,7 +1608,7 @@ static int fme_pmci_init(struct ifpga_feature
> *feature)
> 
>  	max10->type = M10_N6000;
>  	max10->mmio = feature->addr;
> -	if (hw->adapter && hw->adapter->shm.ptr) {
> +	if (hw->adapter->shm.ptr) {
>  		sd = (opae_share_data *)hw->adapter->shm.ptr;
>  		max10->bmc_ops.mutex = &sd->spi_mutex;
>  	} else {
> --
> 1.8.3.1

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

      parent reply	other threads:[~2022-06-23  6:25 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-23  3:11 Wei Huang
2022-06-23  5:51 ` Zhang, Tianfei
2022-06-26 10:21   ` Thomas Monjalon
2022-06-23  6:25 ` Xu, Rosen [this message]

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