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
| ||
|
Message-ID: <20120320080917.77765344@nehalam.linuxnetplumber.net> Date: Tue, 20 Mar 2012 08:09:17 -0700 From: Stephen Hemminger <shemminger@...tta.com> To: Bruno Prémont <bonbons@...ux-vserver.org> Cc: netdev@...r.kernel.org, Greg Rose <gregory.v.rose@...el.com> Subject: Re: netlink: 12 bytes leftover after parsing attributes - triggered by iproute2 libnetlink's rtnl_dump_request() On Tue, 20 Mar 2012 16:00:23 +0100 Bruno Prémont <bonbons@...ux-vserver.org> wrote: > On Tue, 20 Mar 2012 07:41:40 Stephen Hemminger wrote: > > > Should this get fixed at kernel level, iproute2 libnetlink level or > > > at end-user level (e.g. collectd)? > > > Three lines every 10 seconds is a damn lot! > > > > > > Thanks, > > > Bruno > > > > Netlink is supposed to be encoded as Type-Length-Value and correctly written > > programs ignore types they don't understand. So either the library is getting > > confused by the type or the attribute is not encoded correctly. > > > > > > The issue could be in libnetlink library. What version of collectd and libnetlink > > are you using? > > I've used collectd-5.0.x and collectd-4.10.3 with 3.3 kernels. > The stub code I listed is what collectd's netlink plugin does with > libnetlink (processing of netlink reply factored out for short-ness) > > In all cases, linked against libnetlink from iproute2-2.6.38 (on > Gentoo) > > > From looking at git history of both collectd and iproute2, on both > sides there has not been any changes that would affect the result. > > Collectd: > http://git.verplant.org/?p=collectd.git;a=history;f=src/netlink.c;hb=HEAD It is most likely in the libnetlink code, I'll look there. Since libnetlink is not really an exported API, I wish applications would use a real library like libmnl instead rather than copying it out of iproute2. -- 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
Powered by blists - more mailing lists