netdev - Re: [PATCH] Fix infinite retry loop in IP-Config

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <4981CC4F.6050609@alcatel-lucent.fr>
Date:	Thu, 29 Jan 2009 16:33:35 +0100
From:	Benjamin ZORES <benjamin.zores@...atel-lucent.fr>
To:	netdev@...r.kernel.org
Subject: Re: [PATCH] Fix infinite retry loop in IP-Config

Benjamin ZORES a écrit :
> Jarek Poplawski a écrit :
>> On 28-01-2009 10:07, Benjamin ZORES wrote:
>>  
>>> Hi,
>>>
>>> The attached patch fixes some bug with ip-config max retry number.
>>> In ip_auto_config(), kernel tries to retrieve IP configuration forever
>>> in case of NFS root and some specific amount of time otherwise.
>>>
>>> The problem is that, in case of error, the code jump to the 
>>> try_try_again
>>> goto statement, that reassigns the retry number counter, which 
>>> obviously
>>> leads to an infinite loop if IP config fails.
>>>
>>> The attached patch corrects this behavior.
>>> Hope one can push it to mainstream kernel tree.
>>>
>>> Ben
>>>
>>> diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c
>>> index 42a0f3d..4911b81 100644
>>> --- a/net/ipv4/ipconfig.c
>>> +++ b/net/ipv4/ipconfig.c
>>> @@ -1268,6 +1268,7 @@ __be32 __init root_nfs_parse_addr(char *name)
>>>  static int __init ip_auto_config(void)
>>>  {
>>>      __be32 addr;
>>> +     int retries = CONF_OPEN_RETRIES;
>>>     
>>  
>> Doesn't it need "#ifdef IPCONFIG_DYNAMIC" to prevent a compiler
>> warning? I guess you could add a "Signed-off-by:" line BTW.
>>   
> You're perfectly right about this.
> Attached an updated version of the patch.
Any chance of having it merged ?

Ben
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html