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SubjectRe: [PATCH v2 19/19] objtool: Detect loading function pointers across noinstr
Hi Peter,

I love your patch! Yet something to improve:

[auto build test ERROR on tip/auto-latest]
[also build test ERROR on next-20200317]
[cannot apply to tip/x86/core linux/master linus/master v5.6-rc6]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url: https://github.com/0day-ci/linux/commits/Peter-Zijlstra/objtool-vmlinux-o-and-noinstr-validation/20200318-035709
base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 3168392536d32920349af53bdd108e3b92b10f4f
config: x86_64-allyesconfig (attached as .config)
compiler: clang version 11.0.0 (git://gitmirror/llvm_project 14a1b80e044aac1947c891525cf30521be0a79b7)
reproduce:
# FIXME the reproduce steps for clang is not ready yet

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> check.c:2131:10: error: 12 enumeration values not handled in switch: 'INSN_JUMP_DYNAMIC', 'INSN_JUMP_DYNAMIC_CONDITIONAL', 'INSN_RETURN'... [-Werror,-Wswitch]
switch (insn->type) {
^
1 error generated.
mv: cannot stat 'tools/objtool/.check.o.tmp': No such file or directory
make[4]: *** [tools/build/Makefile.build:96: tools/objtool/check.o] Error 1
/usr/bin/ld: scripts/dtc/dtc-parser.tab.o:(.bss+0x10): multiple definition of `yylloc'; scripts/dtc/dtc-lexer.lex.o:(.bss+0x58): first defined here
clang-11: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [scripts/Makefile.host:116: scripts/dtc/dtc] Error 1
make[2]: Target '__build' not remade because of errors.
make[1]: *** [Makefile:1261: scripts_dtc] Error 2
make[4]: Target '__build' not remade because of errors.
make[3]: *** [Makefile:46: tools/objtool/objtool-in.o] Error 2
make[3]: Target 'all' not remade because of errors.
make[2]: *** [Makefile:68: objtool] Error 2
make[1]: *** [Makefile:1787: tools/objtool] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:180: sub-make] Error 2
10 real 23 user 18 sys 399.16% cpu make prepare

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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