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From: "Parthasarathy, JananeeX M" <jananeex.m.parthasarathy@intel.com>
To: 'Aaron Conole' <aconole@redhat.com>
Cc: "'dev@dpdk.org'" <dev@dpdk.org>,
	"Pattan, Reshma" <reshma.pattan@intel.com>,
	"Rao, Nikhil" <nikhil.rao@intel.com>,
	"'stable@dpdk.org'" <stable@dpdk.org>,
	"Poornima, PallantlaX" <pallantlax.poornima@intel.com>
Subject: Re: [dpdk-stable] [dpdk-dev] [PATCH] test/eventdev: fix sprintf with snprintf
Date: Tue, 12 Mar 2019 07:41:17 +0000	[thread overview]
Message-ID: <7AE31235A30B41498D1C31348DC858BD5B54DCD4@IRSMSX103.ger.corp.intel.com> (raw)
In-Reply-To: <7AE31235A30B41498D1C31348DC858BD5B534A73@IRSMSX103.ger.corp.intel.com>

Hi

>-----Original Message-----
>From: Parthasarathy, JananeeX M
>Sent: Tuesday, February 19, 2019 6:33 PM
>To: Aaron Conole <aconole@redhat.com>; Poornima, PallantlaX
><pallantlax.poornima@intel.com>
>Cc: dev@dpdk.org; Pattan, Reshma <reshma.pattan@intel.com>; Rao, Nikhil
><nikhil.rao@intel.com>; stable@dpdk.org
>Subject: RE: [dpdk-dev] [PATCH] test/eventdev: fix sprintf with snprintf
>
>
>
>>-----Original Message-----
>>From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Aaron Conole
>>Sent: Saturday, February 09, 2019 2:50 AM
>>To: Poornima, PallantlaX <pallantlax.poornima@intel.com>
>>Cc: dev@dpdk.org; Pattan, Reshma <reshma.pattan@intel.com>; Rao, Nikhil
>><nikhil.rao@intel.com>; stable@dpdk.org
>>Subject: Re: [dpdk-dev] [PATCH] test/eventdev: fix sprintf with
>>snprintf
>>
>>Pallantla Poornima <pallantlax.poornima@intel.com> writes:
>>
>>> sprintf function is not secure as it doesn't check the length of string.
>>> More secure function snprintf is used.
>>>
>>> Fixes: 2a9c83ae3b ("test/eventdev: add multi-ports test")
>>> Cc: stable@dpdk.org
>>>
>>> Signed-off-by: Pallantla Poornima <pallantlax.poornima@intel.com>
>>> ---
>>>  test/test/test_event_eth_rx_adapter.c | 3 ++-
>>>  1 file changed, 2 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/test/test/test_event_eth_rx_adapter.c
>>> b/test/test/test_event_eth_rx_adapter.c
>>> index 1d3be82b5..38f5c039f 100644
>>> --- a/test/test/test_event_eth_rx_adapter.c
>>> +++ b/test/test/test_event_eth_rx_adapter.c
>>> @@ -479,7 +479,8 @@ adapter_multi_eth_add_del(void)
>>>  	/* add the max port for rx_adapter */
>>>  	port_index = rte_eth_dev_count_total();
>>>  	for (; port_index < RTE_MAX_ETHPORTS; port_index += 1) {
>>> -		sprintf(driver_name, "%s%u", "net_null", drv_id);
>>> +		snprintf(driver_name, sizeof(driver_name), "%s%u", "net_null",
>>> +				drv_id);
>>>  		err = rte_vdev_init(driver_name, NULL);
>>>  		TEST_ASSERT(err == 0, "Failed driver %s got %d",
>>>  		driver_name, err);
>>
>>You call this a fix, but it's not possible for the value of drv_id to
>>exceed '32' and the buffer size is plenty accommodating for that.  Did
>>I miss something?  What is this fixing?
>
>It is better practice to use snprintf although in this case buffer will not overflow
>as size is big enough to accommodate. The changes were done mainly to
>replace sprintf to snprintf. Probably we can remove "fix" line as it is not issue in
>this scenario.
>
>Thanks
>M.P.Jananee

Please suggest if we can remove "fix" line.

Thanks

  parent reply	other threads:[~2019-03-12  7:41 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-06 10:43 [dpdk-stable] " Pallantla Poornima
2019-02-08 21:19 ` [dpdk-stable] [dpdk-dev] " Aaron Conole
     [not found]   ` <7AE31235A30B41498D1C31348DC858BD5B534A73@IRSMSX103.ger.corp.intel.com>
2019-03-12  7:41     ` Parthasarathy, JananeeX M [this message]
2019-03-12 14:44       ` Aaron Conole
2019-03-13 11:04         ` Ferruh Yigit
2019-03-13 13:43           ` Aaron Conole
2019-03-13 14:07             ` Ferruh Yigit
2019-03-13 14:35               ` Aaron Conole
2019-03-30 14:15                 ` Jerin Jacob Kollanukkaran
2019-04-01 20:37                   ` Aaron Conole
2019-04-02  1:35                     ` [dpdk-stable] [EXT] " Jerin Jacob Kollanukkaran

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