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| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2020-12-14 16:04:20 -0600 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2020-12-16 14:35:46 +0100 |
| commit | 44f6a7c0755d8dd453c70557e11687bb080a6f21 (patch) | |
| tree | cd4c8503c23c827428d30337e9427cdb64d36b26 /tools/objtool/elf.h | |
| parent | 2c85ebc57b3e1817b6ce1a6b703928e113a90442 (diff) | |
| download | linux-44f6a7c0755d8dd453c70557e11687bb080a6f21.tar.bz2 | |
objtool: Fix seg fault with Clang non-section symbols
The Clang assembler likes to strip section symbols, which means objtool
can't reference some text code by its section. This confuses objtool
greatly, causing it to seg fault.
The fix is similar to what was done before, for ORC reloc generation:
e81e07244325 ("objtool: Support Clang non-section symbols in ORC generation")
Factor out that code into a common helper and use it for static call
reloc generation as well.
Reported-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Link: https://github.com/ClangBuiltLinux/linux/issues/1207
Link: https://lkml.kernel.org/r/ba6b6c0f0dd5acbba66e403955a967d9fdd1726a.1607983452.git.jpoimboe@redhat.com
Diffstat (limited to 'tools/objtool/elf.h')
| -rw-r--r-- | tools/objtool/elf.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/objtool/elf.h b/tools/objtool/elf.h index 807f8c670097..e6890cc70a25 100644 --- a/tools/objtool/elf.h +++ b/tools/objtool/elf.h @@ -140,6 +140,8 @@ struct reloc *find_reloc_by_dest(const struct elf *elf, struct section *sec, uns struct reloc *find_reloc_by_dest_range(const struct elf *elf, struct section *sec, unsigned long offset, unsigned int len); struct symbol *find_func_containing(struct section *sec, unsigned long offset); +void insn_to_reloc_sym_addend(struct section *sec, unsigned long offset, + struct reloc *reloc); int elf_rebuild_reloc_section(struct elf *elf, struct section *sec); #define for_each_sec(file, sec) \ |