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由 Eric W. Biederman 提交于
By definition net_generic should never be called when it can return NULL. Fail conspicously with a BUG_ON to make it clear when people mess up that a NULL return should never happen. Recently there was a bug in the CAIF subsystem where it was registered with register_pernet_device instead of register_pernet_subsys. It was erroneously concluded that net_generic could validly return NULL and that net_assign_generic was buggy (when it was just inefficient). Hopefully this BUG_ON will prevent people to coming to similar erroneous conclusions in the futrue. Signed-off-by: NEric W. Biederman <ebiederm@xmission.com> Tested-by: NSasha Levin <levinsasha928@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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