../net/mptcp/pm_netlink.c:642:31: warning: context imbalance in 'mptcp_pm_create_subflow_or_signal_addr' - unexpected unlock
../net/mptcp/pm_netlink.c:759:23: warning: context imbalance in 'mptcp_pm_nl_add_addr_received' - unexpected unlock
../net/mptcp/protocol.c:3371:9: warning: context imbalance in 'mptcp_sk_clone_init' - unexpected unlock
../arch/x86/boot/version.c:18:12: warning: symbol 'kernel_version' was not declared. Should it be static?