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modpost: Ignore unresolved section bounds symbols 

In preparation for klp-build livepatch module creation tooling,
suppress warnings for unresolved references to linker-generated
__start_* and __stop_* section bounds symbols.

These symbols are expected to be undefined when modpost runs, as they're
created later by the linker.

Cc: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Petr Mladek <pmladek@suse.com>
Tested-by: Joe Lawrence <joe.lawrence@redhat.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
This commit is contained in:
Josh Poimboeuf 2025-09-17 09:03:17 -07:00
parent 6717e8f91d
commit 4109043bff
1 changed files with 5 additions and 0 deletions
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5
scripts/mod/modpost.c
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@ -606,6 +606,11 @@ static int ignore_undef_symbol(struct elf_info *info, const char *symname)
strstarts(symname, "_savevr_") || strstarts(symname, "_savevr_") ||
strcmp(symname, ".TOC.") == 0) strcmp(symname, ".TOC.") == 0)
return 1; return 1;
/* ignore linker-created section bounds variables */
if (strstarts(symname, "__start_") || strstarts(symname, "__stop_"))
return 1;
/* Do not ignore this symbol */ /* Do not ignore this symbol */
return 0; return 0;
} }