| commit | 7acfe5315312fc56c2a94c9216448087b38ae909 | [log] [tgz] |
|---|---|---|
| author | Josh Poimboeuf <jpoimboe@redhat.com> | Mon Feb 17 21:41:54 2020 -0600 |
| committer | Borislav Petkov <bp@suse.de> | Fri Feb 21 10:20:34 2020 +0100 |
| tree | e3187f3209664e907dabf0fa7a0151d1a82e487f | |
| parent | 113d4bc9048336ba7c3d2ad972dbad4aef6e148a [diff] |
objtool: Improve call destination function detection A recent clang change, combined with a binutils bug, can trigger a situation where a ".Lprintk$local" STT_NOTYPE symbol gets created at the same offset as the "printk" STT_FUNC symbol. This confuses objtool: kernel/printk/printk.o: warning: objtool: ignore_loglevel_setup()+0x10: can't find call dest symbol at .text+0xc67 Improve the call destination detection by looking specifically for an STT_FUNC symbol. Reported-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Borislav Petkov <bp@suse.de> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Tested-by: Nathan Chancellor <natechancellor@gmail.com> Link: https://github.com/ClangBuiltLinux/linux/issues/872 Link: https://sourceware.org/bugzilla/show_bug.cgi?id=25551 Link: https://lkml.kernel.org/r/0a7ee320bc0ea4469bd3dc450a7b4725669e0ea9.1581997059.git.jpoimboe@redhat.com