net: Add missing extra2 parameter for ip_default_ttl sysctl
Commit 76e6ebfb ("netns: add namespace parameter to rt_cache_flush") acceses the extra2 parameter of the ip_default_ttl ctl_table, but it is never set to a meaningful value. When e84f84f2 ("netns: place rt_genid into struct net") is applied, we'll oops in rt_cache_invalidate(). Set extra2 to init_net, to avoid that. Reported-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Sven Wegener <sven.wegener@stealer.net> Tested-by: Marcin Slusarz <marcin.slusarz@gmail.com> Acked-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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