netdev - Re: pimreg zombies

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] [day] [month] [year] [list]

Date:	Sun, 12 Sep 2010 12:17:13 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	alex@...riz.org.uk
Cc:	netdev@...r.kernel.org
Subject: Re: pimreg zombies

From: Alexander Clouter <alex@...riz.org.uk>
Date: Sat, 4 Sep 2010 22:12:34 +0100

> I am writing a multicast pim daemon and noticed that if I call 
> setsockopt(MRT_ADD_VIF), also occurs for IPv6 too, incorrectly on a 
> socket established with socket(AF_INET, SOCK_RAW, IPPROTO_PIM)[1] then 
> when the application quits I have zombie pimreg (and pimreg6) interfaces 
> that can only be disposed of with a reboot.

pimreg interfaces can only be instantiated and removed from userspace
by using the appropriate MRT_*.  So you can get rid of these
interfaces by using an appropriate MRT_DEL_VIF call on an IPPROTO_PIM
socket.

They are not automatically removed by the closing of that userland
socket.
--
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