[159/251] ipv6: take rtnl_lock and mark mrt6 table as freed on namespace cleanup

3.6.11.9-rc1 stable review patch. If anyone has any objections, please let me know. -- From: Hannes Frederic Sowa [ Upstream commit 905a6f96a1b18e490a75f810d733ced93c39b0e5 ] Otherwise we end up dereferencing the already freed net->ipv6.mrt pointer which leads to a panic (from

[159/251] ipv6: take rtnl_lock and mark mrt6 table as freed on namespace cleanup

3.6.11.9-rc1 stable review patch. If anyone has any objections, please let me know. -- From: Hannes Frederic Sowa han...@stressinduktion.org [ Upstream commit 905a6f96a1b18e490a75f810d733ced93c39b0e5 ] Otherwise we end up dereferencing the already freed net-ipv6.mrt pointer