linux-kernel - Re: [PATCH] net: bridge: fix error return code of do_update

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Date:   Tue, 9 Mar 2021 21:31:39 +0800
From:   Jia-Ju Bai <baijiaju1990@...il.com>
To:     Florian Westphal <fw@...len.de>
Cc:     pablo@...filter.org, kadlec@...filter.org, roopa@...dia.com,
        nikolay@...dia.com, davem@...emloft.net, kuba@...nel.org,
        netfilter-devel@...r.kernel.org, coreteam@...filter.org,
        bridge@...ts.linux-foundation.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: bridge: fix error return code of
 do_update_counters()



On 2021/3/9 19:01, Florian Westphal wrote:
> Jia-Ju Bai <baijiaju1990@...il.com> wrote:
>> When find_table_lock() returns NULL to t, no error return code of
>> do_update_counters() is assigned.
> Its -ENOENT.
>
>>   	t = find_table_lock(net, name, &ret, &ebt_mutex);
>                                         ^^^^^
>
> ret is passed to find_table_lock, which passes it to
> find_inlist_lock_noload() which will set *ret = -ENOENT
> for NULL case.

Thanks for the reply!
I did not notice "&ret" in find_table_lock()...
I am sorry for the false positive.


Best wishes,
Jia-Ju Bai