linux/net/netlink
Denis V. Lunev 775516bfa2 [NETNS]: Namespace stop vs 'ip r l' race.
During network namespace stop process kernel side netlink sockets
belonging to a namespace should be closed. They should not prevent
namespace to stop, so they do not increment namespace usage
counter. Though this counter will be put during last sock_put.

The raplacement of the correct netns for init_ns solves the problem
only partial as socket to be stoped until proper stop is a valid
netlink kernel socket and can be looked up by the user processes. This
is not a problem until it resides in initial namespace (no processes
inside this net), but this is not true for init_net.

So, hold the referrence for a socket, remove it from lookup tables and
only after that change namespace and perform a last put.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Tested-by: Alexey Dobriyan <adobriyan@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 15:08:08 -08:00
..
af_netlink.c [NETNS]: Namespace stop vs 'ip r l' race. 2008-01-28 15:08:08 -08:00
attr.c [NETLINK]: Introduce nested and byteorder flag to netlink attribute 2007-10-10 16:49:16 -07:00
genetlink.c [NET]: make netlink user -> kernel interface synchronious 2007-10-10 21:15:29 -07:00
Makefile