netdev - Re: [PATCH nf v2 1/1] netfilter: snmp: Fix one possible panic when snmp_trap

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Date:   Mon, 20 Mar 2017 18:15:48 +0800
From:   Feng Gao <gfree.wind@...il.com>
To:     Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Cc:     Pablo Neira Ayuso <pablo@...filter.org>,
        "David S. Miller" <davem@...emloft.net>, jolsa@...hat.com,
        Netfilter Developer Mailing List 
        <netfilter-devel@...r.kernel.org>,
        Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: Re: [PATCH nf v2 1/1] netfilter: snmp: Fix one possible panic when
 snmp_trap_helper fail to register

On Mon, Mar 20, 2017 at 6:09 PM, Sergei Shtylyov
<sergei.shtylyov@...entembedded.com> wrote:
> On 3/20/2017 12:55 PM, fgao@...ai8.com wrote:
>
>> From: Gao Feng <fgao@...ai8.com>
>>
>> In the commit <93557f53e1fb> ("netfilter: nf_conntrack: nf_conntrack snmp
>
>
>    Angle brackets not needed. :-)
>    The commit citing style is the same as for the Fixes: tag.

The checkpatch.pl reports the following error, if remove the angle brackets.

ERROR: Please use git commit description style 'commit <12+ chars of
sha1> ("<title line>")' - ie: 'commit fatal: ambig ("evision or path
not in the working tree.")'
#7:
In the commit 93557f53e1fb ("netfilter: nf_conntrack: nf_conntrack snmp

total: 1 errors, 0 warnings, 0 checks, 27 lines checked


Regards
Feng

>
>> helper"), the snmp_helper is replaced by nf_nat_snmp_hook. So the
>> snmp_helper is never registered. But it still tries to unregister the
>> snmp_helper, it could cause the panic.
>>
>> Now remove the useless snmp_helper and the unregister call in the
>> error handler.
>>
>> Fixes: 93557f53e1fb ("netfilter: nf_conntrack: nf_conntrack snmp helper")
>>
>> Signed-off-by: Gao Feng <fgao@...ai8.com>
>
> [...]
>
> MBR, Sergei
>