netdev - Re: [PATCH net-next 0/2] Pack struct xfrm_usersa_info and struct xfrm_userpolicy

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 for Android: free password hash cracker in your pocket

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

Date:	Tue, 7 Jan 2014 08:47:24 +0100
From:	Steffen Klassert <steffen.klassert@...unet.com>
To:	Fan Du <fan.du@...driver.com>
Cc:	davem@...emloft.net, stephen@...workplumber.org,
	dev@...ts.strongswan.org, netdev@...r.kernel.org
Subject: Re: [PATCH net-next 0/2] Pack struct xfrm_usersa_info and struct
 xfrm_userpolicy_info

On Tue, Jan 07, 2014 at 02:48:57PM +0800, Fan Du wrote:
> When trying to setup IPsec configuration on a 64bits host with
> iproute2(32bits compiled), the intened xfrm policy and sa is
> either deficit or wrong when kernel trying to parse user land
> information.
> 
> Further investigatino shows that:
> L: kernel
> R: iproute2
> 
>           sizeof       userpolicy      usersa
> 64bits(unpacked)        168/168        224/224
> 32bits(unpacked)        164/164        220/220
>                          ^   ^
>                          L   R
> 
> To keep kernel and user land see a consistent structure, after
> add packing attribute, now it looks like this:
> 
> 64bits(  packed)        164/164        217/217
> 32bits(  packed)        164/164        217/217
>                          ^   ^
>                          L   R
> 

We don't change userspace exported structures. This breaks
existing userspace tools.
--
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