From: Masahiro Yamada <masahiroy@kernel.org>
Date: Fri, 10 Jun 2022 18:32:30 +0000 (+0900)
Subject: modpost: fix section mismatch check for exported init/exit sections
X-Git-Tag: v5.15.73~2731
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=bcf2087ce4de18a55c23b1985b7ba8440224b775;p=platform%2Fkernel%2Flinux-rpi.git

modpost: fix section mismatch check for exported init/exit sections

commit 28438794aba47a27e922857d27b31b74e8559143 upstream.

Since commit f02e8a6596b7 ("module: Sort exported symbols"),
EXPORT_SYMBOL* is placed in the individual section ___ksymtab(_gpl)+<sym>
(3 leading underscores instead of 2).

Since then, modpost cannot detect the bad combination of EXPORT_SYMBOL
and __init/__exit.

Fix the .fromsec field.

Fixes: f02e8a6596b7 ("module: Sort exported symbols")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 94041ee..b284ee0 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -1108,7 +1108,7 @@ static const struct sectioncheck sectioncheck[] = {
 },
 /* Do not export init/exit functions or data */
 {
-	.fromsec = { "__ksymtab*", NULL },
+	.fromsec = { "___ksymtab*", NULL },
 	.bad_tosec = { INIT_SECTIONS, EXIT_SECTIONS, NULL },
 	.mismatch = EXPORT_TO_INIT_EXIT,
 	.symbol_white_list = { DEFAULT_SYMBOL_WHITE_LIST, NULL },