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0d7a7b2014
My previous commits added a dev_hold() in tunnels ndo_init(), but forgot to remove it from special functions setting up fallback tunnels. Fallback tunnels do call their respective ndo_init() This leads to various reports like : unregister_netdevice: waiting for ip6gre0 to become free. Usage count = 2 Fixes:48bb569726("ip6_tunnel: sit: proper dev_{hold|put} in ndo_[un]init methods") Fixes:6289a98f08("sit: proper dev_{hold|put} in ndo_[un]init methods") Fixes:40cb881b5a("ip6_vti: proper dev_{hold|put} in ndo_[un]init methods") Fixes:7f700334be("ip6_gre: proper dev_{hold|put} in ndo_[un]init methods") Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: David S. Miller <davem@davemloft.net>