From: "luobin (L)" <luobin9@huawei.com>
To: David Laight <David.Laight@ACULAB.COM>,
"davem@davemloft.net" <davem@davemloft.net>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"luoxianjun@huawei.com" <luoxianjun@huawei.com>,
"yin.yinshi@huawei.com" <yin.yinshi@huawei.com>,
"cloud.wangxiaoyun@huawei.com" <cloud.wangxiaoyun@huawei.com>,
"chiqijun@huawei.com" <chiqijun@huawei.com>
Subject: Re: [PATCH net-next v1] hinic: fix strncpy output truncated compile warnings
Date: Sat, 8 Aug 2020 11:36:42 +0800 [thread overview]
Message-ID: <b886a6ff-8ed8-c857-f190-e99f8f735e02@huawei.com> (raw)
In-Reply-To: <e7a4fcf12a4e4d179e2fae8ffb44f992@AcuMS.aculab.com>
On 2020/8/7 17:32, David Laight wrote:
> From: Luo bin
>> Sent: 07 August 2020 03:09
>>
>> fix the compile warnings of 'strncpy' output truncated before
>> terminating nul copying N bytes from a string of the same length
>>
>> Signed-off-by: Luo bin <luobin9@huawei.com>
>> Reported-by: kernel test robot <lkp@intel.com>
>> ---
>> V0~V1:
>> - use the strlen()+1 pattern consistently
>>
>> drivers/net/ethernet/huawei/hinic/hinic_devlink.c | 8 ++++----
>> 1 file changed, 4 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/net/ethernet/huawei/hinic/hinic_devlink.c
>> b/drivers/net/ethernet/huawei/hinic/hinic_devlink.c
>> index c6adc776f3c8..1ec88ebf81d6 100644
>> --- a/drivers/net/ethernet/huawei/hinic/hinic_devlink.c
>> +++ b/drivers/net/ethernet/huawei/hinic/hinic_devlink.c
>> @@ -342,9 +342,9 @@ static int chip_fault_show(struct devlink_fmsg *fmsg,
>>
>> level = event->event.chip.err_level;
>> if (level < FAULT_LEVEL_MAX)
>> - strncpy(level_str, fault_level[level], strlen(fault_level[level]));
>> + strncpy(level_str, fault_level[level], strlen(fault_level[level]) + 1);
>
> Have you even considered what that code is actually doing?
>
> David
>
> -
> Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
> Registration No: 1397386 (Wales)
>
> .
>
I'm sorry that I haven't got what you mean and I haven't found any defects in that code. Can you explain more to me?
next prev parent reply other threads:[~2020-08-08 3:38 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-07 2:09 [PATCH net-next v1] hinic: fix strncpy output truncated compile warnings Luo bin
2020-08-07 9:32 ` David Laight
2020-08-08 3:36 ` luobin (L) [this message]
2020-08-08 3:42 ` David Miller
2020-08-08 6:44 ` Kees Cook
2020-08-09 3:19 ` luobin (L)
2020-08-10 8:15 ` David Laight
2020-08-09 2:59 ` luobin (L)
2020-08-08 12:50 ` David Laight
2020-08-09 3:35 ` luobin (L)
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