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From: Andy Green <andy@warmcat.com>
To: Andrew Rybchenko <arybchenko@solarflare.com>, dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH 12/18] drivers: net: sfc: fix another strncpy size and NUL
Date: Tue, 8 May 2018 16:18:41 +0800
Message-ID: <fb7fbdc4-29f4-7fb8-cd72-0fb83af05d28@warmcat.com> (raw)
In-Reply-To: <e2e3bb52-6880-6611-21d8-6be805dfac7b@solarflare.com>



On 05/08/2018 03:36 PM, Andrew Rybchenko wrote:
> Many thanks. I guess the most of below notes are applicable to many other
> patches in the series.
> 
> Signed-off-by: ,  Fixes: and Cc: stable@dpdk.org tags are missing. See [1].

Everybody's project has different prejudices.

> Changeset summary should start from "net/sfc: "
> I.e. something like:
> net/sfc: fix strncpy size and NUL

Yeah if that's what you like.

> (it looks like "another" is useless in the original subject)

It captures my feeling at having to wade through making 18 fixes before 
I could compile the project on current Fedora.

> In general all patches should pass ./devtools/check-git-log.sh and 
> ./devtools/checkpatches.sh
> (which requires path to Linux kernel checkpatches.pl).

Can you help me understand why adding CRLFs at 80 cols on the gcc errors 
I pasted helps anything at all?  The patches actually fix problems in 
the code.

If you don't care about Coverity, let me know and I will register this 
project there and send you fixes when I have time.

> Andrew.
> 
> [1] 
> http://dpdk.org/doc/guides/contributing/patches.html#commit-messages-subject-line
> 
> On 05/08/2018 07:30 AM, Andy Green wrote:
>> ---
>>   drivers/net/sfc/sfc_ethdev.c |    7 +++++--
>>   1 file changed, 5 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
>> index e9bb283e0..bd5f17f33 100644
>> --- a/drivers/net/sfc/sfc_ethdev.c
>> +++ b/drivers/net/sfc/sfc_ethdev.c
>> @@ -662,10 +662,13 @@ sfc_xstats_get_names(struct rte_eth_dev *dev,
>>   
>>   	for (i = 0; i < EFX_MAC_NSTATS; ++i) {
>>   		if (EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask, i)) {
>> -			if (xstats_names != NULL && nstats < xstats_count)
>> +			if (xstats_names != NULL && nstats < xstats_count) {
>>   				strncpy(xstats_names[nstats].name,
>>   					efx_mac_stat_name(sa->nic, i),
>> -					sizeof(xstats_names[0].name));
>> +					sizeof(xstats_names[0].name) - 1);
>> +				xstats_names[0].name[
>> +					sizeof(xstats_names[0].name) - 1] = '\0';
>> +			}
> 
> In fact strlcpy() should be used.
Fair enough.  Last time I looked it wasn't in glibc but seems it is now.

-Andy

>>   			nstats++;
>>   		}
>>   	}
>>
> 

  reply	other threads:[~2018-05-08  8:19 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-08  4:29 [dpdk-dev] [PATCH 00/18] Fix build on gcc8 and various bugs Andy Green
2018-05-08  4:29 ` [dpdk-dev] [PATCH 01/18] lib: ret_table: workaround hash function cast error Andy Green
2018-05-08  4:29 ` [dpdk-dev] [PATCH 02/18] drivers: bus: pci: fix strncpy dangerous code Andy Green
2018-05-08  8:57   ` Bruce Richardson
2018-05-08  4:29 ` [dpdk-dev] [PATCH 03/18] drivers: bus: dpaa: fix inconsistent struct alignment Andy Green
2018-05-08  4:29 ` [dpdk-dev] [PATCH 04/18] drivers: net: axgbe: fix broken eeprom string comp Andy Green
2018-05-08  4:29 ` [dpdk-dev] [PATCH 05/18] drivers: net: nfp: nfpcore: fix strncpy misuse Andy Green
2018-05-08  8:58   ` Bruce Richardson
2018-05-08  9:00     ` Andy Green
2018-05-08  9:03       ` Bruce Richardson
2018-05-08  4:29 ` [dpdk-dev] [PATCH 06/18] drivers: net: nfp: nfpcore fix off-by-one and no NUL on strncpy use Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 07/18] drivers: net: nfp: don't memcpy out of source range Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 08/18] drivers: net: nfp: fix buffer overflow in fw_name Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 09/18] drivers: net: qede: fix strncpy constant and NUL Andy Green
2018-05-08 17:59   ` Shaikh, Shahed
2018-05-08 19:53     ` Bruce Richardson
2018-05-08 20:02       ` Shaikh, Shahed
2018-05-08 22:07         ` Andy Green
2018-05-08 23:33           ` Shaikh, Shahed
2018-05-08  4:30 ` [dpdk-dev] [PATCH 10/18] drivers: net: qede: fix broken strncpy Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 11/18] drivers:net:sfc: fix strncpy length Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 12/18] drivers: net: sfc: fix another strncpy size and NUL Andy Green
2018-05-08  7:36   ` Andrew Rybchenko
2018-05-08  8:18     ` Andy Green [this message]
2018-05-08  9:02       ` Bruce Richardson
2018-05-08  9:08       ` Andrew Rybchenko
2018-05-08  4:30 ` [dpdk-dev] [PATCH 13/18] drivers: net: vdev: readlink inputs cannot be aliased Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 14/18] drivers: net: vdev: fix 3 x strncpy misuse Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 15/18] test-pmd: can't find include Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 16/18] app: fix sprintf overrun bug Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 17/18] app: test-bbdev: strcpy ok for allocated string Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 18/18] app: test-bbdev: strcpy ok for allocated string 2 Andy Green

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