Messages in this thread | | | Subject | Re: arch/x86/net/bpf_jit_comp.c:2188:5: warning: no previous prototype for 'arch_prepare_bpf_dispatcher' | From | Daniel Borkmann <> | Date | Tue, 16 Nov 2021 10:03:58 +0100 |
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[ Cc Bjorn ]
On 11/16/21 4:25 AM, kernel test robot wrote: > Hi Daniel, > > First bad commit (maybe != root cause): > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: 8ab774587903771821b59471cc723bba6d893942 > commit: b24abcff918a5cbf44b0c982bd3477a93e8e4911 bpf, kconfig: Add consolidated menu entry for bpf with core options > date: 6 months ago > config: x86_64-buildonly-randconfig-r006-20211012 (attached as .config) > compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 > reproduce (this is a W=1 build): > # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b24abcff918a5cbf44b0c982bd3477a93e8e4911 > git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > git fetch --no-tags linus master > git checkout b24abcff918a5cbf44b0c982bd3477a93e8e4911 > # save the attached .config to linux build tree > make W=1 ARCH=x86_64 > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp@intel.com> > > All warnings (new ones prefixed by >>): > >>> arch/x86/net/bpf_jit_comp.c:2188:5: warning: no previous prototype for 'arch_prepare_bpf_dispatcher' [-Wmissing-prototypes] > 2188 | int arch_prepare_bpf_dispatcher(void *image, s64 *funcs, int num_funcs) > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ > > > vim +/arch_prepare_bpf_dispatcher +2188 arch/x86/net/bpf_jit_comp.c > > 75ccbef6369e94 Björn Töpel 2019-12-13 2187 > 75ccbef6369e94 Björn Töpel 2019-12-13 @2188 int arch_prepare_bpf_dispatcher(void *image, s64 *funcs, int num_funcs) > 75ccbef6369e94 Björn Töpel 2019-12-13 2189 { > 75ccbef6369e94 Björn Töpel 2019-12-13 2190 u8 *prog = image; > 75ccbef6369e94 Björn Töpel 2019-12-13 2191 > 75ccbef6369e94 Björn Töpel 2019-12-13 2192 sort(funcs, num_funcs, sizeof(funcs[0]), cmp_ips, NULL); > 75ccbef6369e94 Björn Töpel 2019-12-13 2193 return emit_bpf_dispatcher(&prog, 0, num_funcs - 1, funcs); > 75ccbef6369e94 Björn Töpel 2019-12-13 2194 } > 75ccbef6369e94 Björn Töpel 2019-12-13 2195 > > :::::: The code at line 2188 was first introduced by commit > :::::: 75ccbef6369e94ecac696a152a998a978d41376b bpf: Introduce BPF dispatcher > > :::::: TO: Björn Töpel <bjorn.topel@intel.com> > :::::: CC: Alexei Starovoitov <ast@kernel.org> > > --- > 0-DAY CI Kernel Test Service, Intel Corporation > https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org >
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