Re: [PATCH] x86/kbuild: enable modversions for symbols exported from asm

[Linus Torvalds <torvalds@linux-foundation.org>]

On Tue, Nov 29, 2016 at 9:05 AM, Adam Borowski <kilobyte@angband.pl> wrote:
>
> Thus, if it's indeed binutils, you'll see the breakage as soon as Fedora
> recovers from the freeze.

So quite frankly, I don't want to make our kernel sources worse due to
broken shit tools getting something wrong that we shouldn't even care
about.

How about this stupid patch? It weakens modversions, but that may be
ok for Debian, and a better alternative than just saying "we don't
support it at all".

            Linus

 kernel/module.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/kernel/module.c b/kernel/module.c
index f57dd63186e6..0e54d5bf0097 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1301,8 +1301,9 @@ static int check_version(Elf_Shdr *sechdrs,
 		goto bad_version;
 	}
 
-	pr_warn("%s: no symbol version for %s\n", mod->name, symname);
-	return 0;
+	/* Broken toolchain. Warn once, then let it go.. */
+	pr_warn_once("%s: no symbol version for %s\n", mod->name, symname);
+	return 1;
 
 bad_version:
 	pr_warn("%s: disagrees about version of symbol %s\n",