5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nathan Chancellor <nathan@xxxxxxxxxx>
[ Upstream commit 19331e84c3873256537d446afec1f6c507f8c4ef ]
Commit 6c730bfc894f ("modpost: handle -ffunction-sections") added
".text.*" to the OTHER_TEXT_SECTIONS macro to fix certain section
mismatch warnings. Unfortunately, this makes it impossible for modpost
to warn about section mismatches with LTO, which implies
'-ffunction-sections', as all functions are put in their own
'.text.<func_name>' sections, which may still reference functions in
sections they are not supposed to, such as __init.
Fix this by moving ".text.*" into TEXT_SECTIONS, so that configurations
with '-ffunction-sections' will see warnings about mismatched sections.
Link: https://lore.kernel.org/Y39kI3MOtVI5BAnV@xxxxxxxxxx/
Reported-by: Vincent Donnefort <vdonnefort@xxxxxxxxxx>
Reviewed-and-tested-by: Alexander Lobakin <alexandr.lobakin@xxxxxxxxx>
Reviewed-by: Sami Tolvanen <samitolvanen@xxxxxxxxxx>
Tested-by: Vincent Donnefort <vdonnefort@xxxxxxxxxx>
Signed-off-by: Nathan Chancellor <nathan@xxxxxxxxxx>
Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
Stable-dep-of: 7912405643a1 ("modpost: Add .irqentry.text to OTHER_SECTIONS")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
scripts/mod/modpost.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index c6e655e0ed988..43bacdee5cc5d 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -936,10 +936,10 @@ static void check_section(const char *modname, struct elf_info *elf,
#define ALL_EXIT_SECTIONS EXIT_SECTIONS, ALL_XXXEXIT_SECTIONS
#define DATA_SECTIONS ".data", ".data.rel"
-#define TEXT_SECTIONS ".text", ".text.unlikely", ".sched.text", \
+#define TEXT_SECTIONS ".text", ".text.*", ".sched.text", \
".kprobes.text", ".cpuidle.text", ".noinstr.text"
#define OTHER_TEXT_SECTIONS ".ref.text", ".head.text", ".spinlock.text", \
- ".fixup", ".entry.text", ".exception.text", ".text.*", \
+ ".fixup", ".entry.text", ".exception.text", \
".coldtext", ".softirqentry.text"
#define INIT_SECTIONS ".init.*"
--
2.43.0
