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Subject[tip: x86/core] objtool: Have WARN_FUNC fall back to sym+off
The following commit has been merged into the x86/core branch of tip:

Commit-ID: 5cff2086b01526b8c7deacc86473ffbab0cddfa9
Gitweb: https://git.kernel.org/tip/5cff2086b01526b8c7deacc86473ffbab0cddfa9
Author: Peter Zijlstra <peterz@infradead.org>
AuthorDate: Tue, 08 Mar 2022 16:30:16 +01:00
Committer: Peter Zijlstra <peterz@infradead.org>
CommitterDate: Tue, 15 Mar 2022 10:32:32 +01:00

objtool: Have WARN_FUNC fall back to sym+off

Currently WARN_FUNC() either prints func+off and failing that prints
sec+off, add an intermediate sym+off. This is useful when playing
around with entry code.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/20220308154317.461283840@infradead.org
---
tools/objtool/include/objtool/warn.h | 2 ++
1 file changed, 2 insertions(+)

diff --git a/tools/objtool/include/objtool/warn.h b/tools/objtool/include/objtool/warn.h
index d99c467..802cfda 100644
--- a/tools/objtool/include/objtool/warn.h
+++ b/tools/objtool/include/objtool/warn.h
@@ -22,6 +22,8 @@ static inline char *offstr(struct section *sec, unsigned long offset)
unsigned long name_off;

func = find_func_containing(sec, offset);
+ if (!func)
+ func = find_symbol_containing(sec, offset);
if (func) {
name = func->name;
name_off = offset - func->offset;
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