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[v8,10/11] modpost: show offset from symbol for section mismatch warnings

Message ID 20230610091320.1054554-11-masahiroy@kernel.org (mailing list archive)
State New, archived
Headers show
Series Unify <linux/export.h> and <asm/export.h>, remove EXPORT_DATA_SYMBOL(), faster TRIM_UNUSED_KSYMS | expand

Commit Message

Masahiro Yamada June 10, 2023, 9:13 a.m. UTC 
Currently, modpost only shows the symbol names and section names, so it
repeats the same message if there are multiple relocations in the same
symbol. It is common the relocation spans across multiple instructions.

It is better to show the offset from the symbol.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
---

 scripts/mod/modpost.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 85df3f3ba9ee..40967ed816df 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -1147,8 +1147,8 @@  static void default_mismatch_handler(const char *modname, struct elf_info *elf,
 
 	sec_mismatch_count++;
 
-	warn("%s: section mismatch in reference: %s (section: %s) -> %s (section: %s)\n",
-	     modname, fromsym, fromsec, tosym, tosec);
+	warn("%s: section mismatch in reference: %s+0x%x (section: %s) -> %s (section: %s)\n",
+	     modname, fromsym, (unsigned int)(faddr - from->st_value), fromsec, tosym, tosec);
 
 	if (mismatch->mismatch == EXTABLE_TO_NON_TEXT) {
 		if (match(tosec, mismatch->bad_tosec))