CC: kbuild-...@lists.01.org CC: mp...@lists.01.org TO: Paolo Abeni <pab...@redhat.com> CC: Mat Martineau <mathew.j.martin...@linux.intel.com>
tree: https://github.com/multipath-tcp/mptcp_net-next.git export head: 38c882ee9a77d857355a8dd2a220156ba7df73bc commit: 37f6e2313ae90097187b574f1c143a42bd263f88 [654/660] mptcp: call tcp_cleanup_rbuf on subflows :::::: branch date: 4 hours ago :::::: commit date: 4 hours ago config: i386-randconfig-s001-20200911 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-191-g10164920-dirty git checkout 37f6e2313ae90097187b574f1c143a42bd263f88 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> sparse warnings: (new ones prefixed by >>) net/mptcp/protocol.c: note: in included file: >> include/net/sock.h:1610:31: sparse: sparse: context imbalance in >> 'mptcp_rcv_space_adjust' - unexpected unlock net/mptcp/protocol.c:2042:24: sparse: sparse: context imbalance in 'mptcp_sk_clone' - unexpected unlock # https://github.com/multipath-tcp/mptcp_net-next/commit/37f6e2313ae90097187b574f1c143a42bd263f88 git remote add mptcp https://github.com/multipath-tcp/mptcp_net-next.git git fetch --no-tags mptcp export git checkout 37f6e2313ae90097187b574f1c143a42bd263f88 vim +/mptcp_rcv_space_adjust +1610 include/net/sock.h ^1da177e4c3f41 Linus Torvalds 2005-04-16 1595 69336bd2d3ddce Joe Perches 2013-09-22 1596 bool lock_sock_fast(struct sock *sk); 8a74ad60a546b1 Eric Dumazet 2010-05-26 1597 /** 8a74ad60a546b1 Eric Dumazet 2010-05-26 1598 * unlock_sock_fast - complement of lock_sock_fast 8a74ad60a546b1 Eric Dumazet 2010-05-26 1599 * @sk: socket 8a74ad60a546b1 Eric Dumazet 2010-05-26 1600 * @slow: slow mode 8a74ad60a546b1 Eric Dumazet 2010-05-26 1601 * 8a74ad60a546b1 Eric Dumazet 2010-05-26 1602 * fast unlock socket for user context. 8a74ad60a546b1 Eric Dumazet 2010-05-26 1603 * If slow mode is on, we call regular release_sock() 8a74ad60a546b1 Eric Dumazet 2010-05-26 1604 */ 8a74ad60a546b1 Eric Dumazet 2010-05-26 1605 static inline void unlock_sock_fast(struct sock *sk, bool slow) 4b0b72f7dd617b Eric Dumazet 2010-04-28 1606 { 8a74ad60a546b1 Eric Dumazet 2010-05-26 1607 if (slow) 8a74ad60a546b1 Eric Dumazet 2010-05-26 1608 release_sock(sk); 8a74ad60a546b1 Eric Dumazet 2010-05-26 1609 else 4b0b72f7dd617b Eric Dumazet 2010-04-28 @1610 spin_unlock_bh(&sk->sk_lock.slock); 4b0b72f7dd617b Eric Dumazet 2010-04-28 1611 } 4b0b72f7dd617b Eric Dumazet 2010-04-28 1612 :::::: The code at line 1610 was first introduced by commit :::::: 4b0b72f7dd617b13abd1b04c947e15873e011a24 net: speedup udp receive path :::::: TO: Eric Dumazet <eric.duma...@gmail.com> :::::: CC: David S. Miller <da...@davemloft.net> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
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