linux-kernel - Re: [PATCH iproute2-rc 2/2] rdma: Fix the error of accessing string variable outside the lifecycle

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Date: Tue, 9 Jan 2024 09:36:47 +0800
From: Junxian Huang <huangjunxian6@...ilicon.com>
To: Andrea Claudi <aclaudi@...hat.com>
CC: <jgg@...pe.ca>, <leon@...nel.org>, <dsahern@...il.com>,
	<stephen@...workplumber.org>, Chengchang Tang <tangchengchang@...wei.com>,
	<netdev@...r.kernel.org>, <linux-rdma@...r.kernel.org>,
	<linuxarm@...wei.com>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH iproute2-rc 2/2] rdma: Fix the error of accessing string
 variable outside the lifecycle



On 2024/1/9 0:10, Andrea Claudi wrote:
> On Mon, Jan 08, 2024 at 09:28:52AM +0800, Junxian Huang wrote:
>>
>> Hi all,
>>
>> the first patch is replaced by Stephen's latest patches. Are there any
>> comments to this patch?
>>
>> Thanks,
>> Junxian
>>
>> On 2023/12/29 14:52, Junxian Huang wrote:
>>> From: wenglianfa <wenglianfa@...wei.com>
>>>
>>> All these SPRINT_BUF(b) definitions are inside the 'if' block, but
>>> accessed outside the 'if' block through the pointers 'comm'. This
>>> leads to empty 'comm' attribute when querying resource information.
>>> So move the definitions to the beginning of the functions to extend
>>> their life cycle.
>>>
>>> Before:
>>> $ rdma res show srq
>>> dev hns_0 srqn 0 type BASIC lqpn 18 pdn 5 pid 7775 comm
>>>
>>> After:
>>> $ rdma res show srq
>>> dev hns_0 srqn 0 type BASIC lqpn 18 pdn 5 pid 7775 comm ib_send_bw
>>>
>>> Fixes: 1808f002dfdd ("lib/fs: fix memory leak in get_task_name()")
>>> Signed-off-by: wenglianfa <wenglianfa@...wei.com>
>>> Signed-off-by: Junxian Huang <huangjunxian6@...ilicon.com>
>>> ---
> 
> Hi Junxian,
> For future patches, you can have a faster feedback adding to cc the
> author of the original patch. In this case it's me, so here's my
> 
> Acked-by: Andrea Claudi <aclaudi@...hat.com>
> 

Thanks for the advice!

Junxian