On Sun, May 28, 2023 at 9:40 AM kernel test robot <lkp@xxxxxxxxx> wrote: > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git modpost-v5 > head: 952d644bb57db01d034e1faf94519473fbb1a0a1 > commit: 952d644bb57db01d034e1faf94519473fbb1a0a1 [23/23] kbuild: implement CONFIG_TRIM_UNUSED_KSYMS without recursion > config: x86_64-randconfig-s053-20230528 (https://download.01.org/0day-ci/archive/20230528/202305280830.Rj5ltc9M-lkp@xxxxxxxxx/config) > compiler: gcc-11 (Debian 11.3.0-12) 11.3.0 > reproduce: > # apt-get install sparse > # sparse version: v0.6.4-39-gce1a6720-dirty > # https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git/commit/?id=952d644bb57db01d034e1faf94519473fbb1a0a1 > git remote add masahiroy-kbuild https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git > git fetch --no-tags masahiroy-kbuild modpost-v5 > git checkout 952d644bb57db01d034e1faf94519473fbb1a0a1 > # save the config file > mkdir build_dir && cp config build_dir/.config > make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 olddefconfig > make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/kernel/ kernel/trace/ lib/ > > If you fix the issue, kindly add following tag where applicable > | Reported-by: kernel test robot <lkp@xxxxxxxxx> > | Closes: https://lore.kernel.org/oe-kbuild-all/202305280830.Rj5ltc9M-lkp@xxxxxxxxx/ > > sparse warnings: (new ones prefixed by >>) > >> arch/x86/kernel/callthunks.c:45:1: sparse: sparse: cast removes address space '__percpu' of expression > arch/x86/kernel/callthunks.c:46:1: sparse: sparse: cast removes address space '__percpu' of expression Thanks. This commit is unrelated. This seems to be a regression of https://patchwork.kernel.org/project/linux-kbuild/patch/20230521160426.1881124-11-masahiroy@xxxxxxxxxx/ I will squash the following fix-up. diff --git a/include/linux/export.h b/include/linux/export.h index 32461a01608c..245ecd342772 100644 --- a/include/linux/export.h +++ b/include/linux/export.h @@ -56,6 +56,7 @@ extern struct module __this_module; #else #define ___EXPORT_SYMBOL(sym, license, ns) \ + extern typeof(sym) sym; \ __ADDRESSABLE(sym) \ asm(__stringify(____EXPORT_SYMBOL(sym, license, ns))) > vim +/__percpu +45 arch/x86/kernel/callthunks.c > > e81dc127ef6988 Thomas Gleixner 2022-09-15 39 > f5c1bb2afe9339 Thomas Gleixner 2022-09-15 40 #ifdef CONFIG_CALL_THUNKS_DEBUG > f5c1bb2afe9339 Thomas Gleixner 2022-09-15 41 DEFINE_PER_CPU(u64, __x86_call_count); > f5c1bb2afe9339 Thomas Gleixner 2022-09-15 42 DEFINE_PER_CPU(u64, __x86_ret_count); > f5c1bb2afe9339 Thomas Gleixner 2022-09-15 43 DEFINE_PER_CPU(u64, __x86_stuffs_count); > f5c1bb2afe9339 Thomas Gleixner 2022-09-15 44 DEFINE_PER_CPU(u64, __x86_ctxsw_count); > f5c1bb2afe9339 Thomas Gleixner 2022-09-15 @45 EXPORT_SYMBOL_GPL(__x86_ctxsw_count); > f5c1bb2afe9339 Thomas Gleixner 2022-09-15 46 EXPORT_SYMBOL_GPL(__x86_call_count); > f5c1bb2afe9339 Thomas Gleixner 2022-09-15 47 #endif > f5c1bb2afe9339 Thomas Gleixner 2022-09-15 48 > > :::::: The code at line 45 was first introduced by commit > :::::: f5c1bb2afe93396d41c5cbdcb909b08a75b8dde4 x86/calldepth: Add ret/call counting for debug > > :::::: TO: Thomas Gleixner <tglx@xxxxxxxxxxxxx> > :::::: CC: Peter Zijlstra <peterz@xxxxxxxxxxxxx> > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests/wiki -- Best Regards Masahiro Yamada
