| 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
| ||
|
Date: Thu, 21 Jun 2012 22:27:49 +0200 From: Eric Dumazet <eric.dumazet@...il.com> To: Josh Hunt <johunt@...mai.com> Cc: "davem@...emloft.net" <davem@...emloft.net>, "kaber@...sh.net" <kaber@...sh.net>, Debabrata Banerjee <dbavatar@...il.com>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "yoshfuji@...ux-ipv6.org" <yoshfuji@...ux-ipv6.org>, "jmorris@...ei.org" <jmorris@...ei.org>, "pekkas@...core.fi" <pekkas@...core.fi>, "kuznet@....inr.ac.ru" <kuznet@....inr.ac.ru>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: Bug in net/ipv6/ip6_fib.c:fib6_dump_table() On Thu, 2012-06-21 at 14:35 -0500, Josh Hunt wrote: > Can anyone provide details of the crash which was intended to be fixed > by 2bec5a369ee79576a3eea2c23863325089785a2c? With this patch in and > doing concurrent adds/deletes and dumping the table via netlink causes > duplicate entries to be reported. Reverting this patch causes those > problems to go away. We can provide a more detailed test if that is > needed, but so far our testing has been unable to reproduce the crash > mentioned in the above commit with it reverted. A mere revert wont be enough. Looking at this code, it lacks proper synchronization between tree updaters and tree walkers. fib6_walker_lock rwlock is not enough to prevent races. Are you willing to fix this yourself ? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists