From: Thomas Gleixner tglx@linutronix.de
The compiler can fully inline the actual handler function of an interrupt entry into the .irqentry.text entry point. If such a function contains an access which has an exception table entry, modpost complains about a section mismatch:
WARNING: vmlinux.o(__ex_table+0x447c): Section mismatch in reference ...
The relocation at __ex_table+0x447c references section ".irqentry.text" which is not in the list of authorized sections.
Add .irqentry.text to OTHER_SECTIONS to cure the issue.
Reported-by: Sergey Senozhatsky senozhatsky@chromium.org Signed-off-by: Thomas Gleixner tglx@linutronix.de Cc: stable@vger.kernel.org # needed for linux-5.4-y Link: https://lore.kernel.org/all/20241128111844.GE10431@google.com/ Signed-off-by: Masahiro Yamada masahiroy@kernel.org (cherry picked from commit 7912405643a14b527cd4a4f33c1d4392da900888) Signed-off-by: Sergey Senozhatsky senozhatsky@chromium.org --- scripts/mod/modpost.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 53e276bb24ac..cb8858388a22 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -963,7 +963,7 @@ static void check_section(const char *modname, struct elf_info *elf, ".kprobes.text", ".cpuidle.text", ".noinstr.text" #define OTHER_TEXT_SECTIONS ".ref.text", ".head.text", ".spinlock.text", \ ".fixup", ".entry.text", ".exception.text", ".text.*", \ - ".coldtext" + ".coldtext", ".irqentry.text"
#define INIT_SECTIONS ".init.*" #define MEM_INIT_SECTIONS ".meminit.*"