Messages in this thread | | | Date | Sat, 23 Sep 2023 18:01:07 +0800 | From | kernel test robot <> | Subject | net/socket.c:1676:21: error: no previous declaration for 'update_socket_protocol' |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: d90b0276af8f25a0b8ae081a30d1b2a61263393b commit: 0dd061a6a115f25132989cbd591a25afb2dee086 bpf: Add update_socket_protocol hook date: 5 weeks ago config: x86_64-sof-customedconfig-avs-defconfig (https://download.01.org/0day-ci/archive/20230923/202309231748.AETjbleh-lkp@intel.com/config) compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230923/202309231748.AETjbleh-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202309231748.AETjbleh-lkp@intel.com/
All errors (new ones prefixed by >>):
>> net/socket.c:1676:21: error: no previous declaration for 'update_socket_protocol' [-Werror=missing-declarations] __weak noinline int update_socket_protocol(int family, int type, int protocol) ^~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors
vim +/update_socket_protocol +1676 net/socket.c
1659 1660 /* A hook for bpf progs to attach to and update socket protocol. 1661 * 1662 * A static noinline declaration here could cause the compiler to 1663 * optimize away the function. A global noinline declaration will 1664 * keep the definition, but may optimize away the callsite. 1665 * Therefore, __weak is needed to ensure that the call is still 1666 * emitted, by telling the compiler that we don't know what the 1667 * function might eventually be. 1668 * 1669 * __diag_* below are needed to dismiss the missing prototype warning. 1670 */ 1671 1672 __diag_push(); 1673 __diag_ignore_all("-Wmissing-prototypes", 1674 "A fmod_ret entry point for BPF programs"); 1675 > 1676 __weak noinline int update_socket_protocol(int family, int type, int protocol) 1677 { 1678 return protocol; 1679 } 1680
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