From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Monjalon <thomas@monjalon.net>
Subject: Re: [PATCH 1/3] ethdev: fix null pointer checking
Date: Wed, 03 Apr 2019 18:27:51 +0200
Message-ID: <1807422.QXMQecOh3y@xps>
References: <20190403160726.1231-1-mohammad.abdul.awal@intel.com>
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Cc: dev@dpdk.org, ferruh.yigit@intel.com, arybchenko@solarflare.com,
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To: Mohammad Abdul Awal <mohammad.abdul.awal@intel.com>
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03/04/2019 18:07, Mohammad Abdul Awal:
> Null value for parameter name will cause segfault for the
> strnlen and strcmp functions.

I'm not sure we want such obvious checks for all APIs.
Here I would say yes.

> Fixes: 0b33b68d12 ("ethdev: export allocate function")
> Fixes: 942661004c ("ethdev: export secondary attach function")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Mohammad Abdul Awal <mohammad.abdul.awal@intel.com>
> ---
> --- a/lib/librte_ethdev/rte_ethdev.c
> +++ b/lib/librte_ethdev/rte_ethdev.c
> @@ -440,6 +440,11 @@ rte_eth_dev_allocate(const char *name)
>  	struct rte_eth_dev *eth_dev = NULL;
>  	size_t name_len;
>  
> +	if (name == NULL) {
> +		RTE_ETHDEV_LOG(ERR, "Null pointer is specified\n");

This is a very generic error message.
It might be "Fail to allocate port with empty name"

> @@ -492,6 +497,11 @@ rte_eth_dev_attach_secondary(const char *name)
>  	uint16_t i;
>  	struct rte_eth_dev *eth_dev = NULL;
>  
> +	if (name == NULL) {
> +		RTE_ETHDEV_LOG(ERR, "Null pointer is specified\n");

"Fail to attach port with empty name"