netdev - Re: [PATCH V2 resend] ipv6: fix incorrect route 'expires' value passed to userspace

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: <500CA341.3070901@cn.fujitsu.com>
Date:	Mon, 23 Jul 2012 09:05:05 +0800
From:	Li Wei <lw@...fujitsu.com>
To:	David Miller <davem@...emloft.net>
CC:	David.Laight@...LAB.COM, netdev@...r.kernel.org,
	shemminger@...tta.com
Subject: Re: [PATCH V2 resend] ipv6: fix incorrect route 'expires' value passed
 to userspace

On 07/21/2012 02:22 AM, David Miller wrote:
> From: "David Laight" <David.Laight@...LAB.COM>
> Date: Fri, 20 Jul 2012 11:32:05 +0100
> 
>>> -	else if (rt->dst.expires - jiffies < INT_MAX)
>>> -		expires = rt->dst.expires - jiffies;
>>> +	else if ((long)rt->dst.expires - (long)jiffies > INT_MIN
>>> +			&& (long)rt->dst.expires - (long)jiffies <
>> INT_MAX)
>>> +		expires = (long)rt->dst.expires - (long)jiffies;
>>>  	else
>>> -		expires = INT_MAX;
>>> +		expires = time_is_after_jiffies(rt->dst.expires) ?
>> INT_MAX : INT_MIN;
>>
>> I can't help feeling there is a better way to do this.
>> Maybe:
>> 	long expires = rt->dst.expires - jiffies;
>> 	if (expires != (int)expires)
>> 		expires = expires > 0 ? INT_MAX : INT_MIN;
>> Although maybe -INT_MAX instead of INT_MIN.
> 
> This patch also does not apply at all to net-next, so needs to be
> redone regardless.

I'll redone this patch base on 'net-next'.

Thanks

> 
> 
--
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