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| author | Josh Poimboeuf <[email protected]> | 2020-02-17 21:41:54 -0600 |
|---|---|---|
| committer | Borislav Petkov <[email protected]> | 2020-02-21 10:20:34 +0100 |
| commit | 7acfe5315312fc56c2a94c9216448087b38ae909 (patch) | |
| tree | e3187f3209664e907dabf0fa7a0151d1a82e487f /tools/perf/scripts/python/check-perf-trace.py | |
| 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 <[email protected]>
Signed-off-by: Josh Poimboeuf <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Tested-by: Nick Desaulniers <[email protected]>
Tested-by: Nathan Chancellor <[email protected]>
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
Diffstat (limited to 'tools/perf/scripts/python/check-perf-trace.py')
0 files changed, 0 insertions, 0 deletions