[kbuild-all] drivers/infiniband/core/nldev.c:2187:1: warning: unused function '__chk_RDMA_NL_NLDEV'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 88b06399c9c766c283e070b022b5ceafa4f63f19 commit: 919067cc845f323a80b6fe987b64238bd82d309e net: add CONFIG_PCPU_DEV_REFCNT date: 8 weeks ago config: mips-randconfig-r032-20210512 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project a0fed635fe1701470062495a6ffee1c608f3f1bc) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 919067cc845f323a80b6fe987b64238bd82d309e # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): MODULE_ALIAS_RDMA_NETLINK(RDMA_NL_NLDEV, 5); ^ include/rdma/rdma_netlink.h:33:21: note: expanded from macro 'MODULE_ALIAS_RDMA_NETLINK' static inline void __chk_##_index(void) ^ <scratch space>:27:1: note: expanded from here __chk_RDMA_NL_NLDEV ^ fatal error: error in backend: Nested variants found in inline asm string: ' .set push .set mips64r2 .if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/atomic.h", .line = 154, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif 1: ll $1, $2 # atomic_fetch_sub subu $0, $1, $3 sc $0, $2 beqz $0, 1b .set pop move $0, $1 ' clang-13: error: clang frontend command failed with exit code 70 (use -v to see invocation) clang version 13.0.0 (git://gitmirror/llvm_project a0fed635fe1701470062495a6ffee1c608f3f1bc) Target: mips-unknown-linux-gnu Thread model: posix InstalledDir: /opt/cross/clang-a0fed635fe/bin clang-13: note: diagnostic msg: Makefile arch drivers fs include kernel mm net scripts source usr -- static inline bool ip6gre_tnl_addr_conflict(const struct ip6_tnl ^ fatal error: error in backend: Nested variants found in inline asm string: ' .set push .set mips64r2 .if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/atomic.h", .line = 154, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif 1: ll $1, $2 # atomic_fetch_sub subu $0, $1, $3 sc $0, $2 beqz $0, 1b .set pop move $0, $1 ' clang-13: error: clang frontend command failed with exit code 70 (use -v to see invocation) clang version 13.0.0 (git://gitmirror/llvm_project a0fed635fe1701470062495a6ffee1c608f3f1bc) Target: mips-unknown-linux-gnu Thread model: posix InstalledDir: /opt/cross/clang-a0fed635fe/bin clang-13: note: diagnostic msg: Makefile arch drivers fs include kernel mm net scripts source usr vim +/__chk_RDMA_NL_NLDEV +2187 drivers/infiniband/core/nldev.c e3bf14bdc17a8e Jason Gunthorpe 2017-08-14 2186 e3bf14bdc17a8e Jason Gunthorpe 2017-08-14 @2187 MODULE_ALIAS_RDMA_NETLINK(RDMA_NL_NLDEV, 5); :::::: The code at line 2187 was first introduced by commit :::::: e3bf14bdc17a8e917f337760cc7cacf3232d7dbc rdma: Autoload netlink client modules :::::: TO: Jason Gunthorpe <jgunthorpe(a)obsidianresearch.com&gt; :::::: CC: Doug Ledford <dledford(a)redhat.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org