+ openrisc-export-mulsi3.patch added to mm-hotfixes-unstable branch

+ openrisc-export-mulsi3.patch added to mm-hotfixes-unstable branch

[Andrew Morton]

The patch titled
     Subject: openrisc: export __mulsi3 for modules
has been added to the -mm mm-hotfixes-unstable branch.  Its filename is
     openrisc-export-mulsi3.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/openrisc-export-mulsi3.patch

This patch will later appear in the mm-hotfixes-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Andrew Morton <akpm@linux-foundation.org>
Subject: openrisc: export __mulsi3 for modules
Date: Wed Oct 28 06:24:22 PM PDT 2026

OpenRISC configurations without hardware multiplication fail to build
modules which contain compiler-generated calls to __mulsi3.  The failure
is widespread, affecting filesystems, drivers and KUnit tests at modpost.

When CONFIG_OPENRISC_HAVE_INST_MUL is disabled, the architecture Makefile
passes -msoft-mul to GCC.  The multiplication helper is supplied by the
libgcc archive linked into vmlinux, but or32_ksyms.c does not export it. 
Built-in callers can therefore link while module callers cannot resolve
the symbol.

Export __mulsi3 alongside the other compiler-generated helpers.

The omission predates 7c3f4d699f34 ("resource, kunit: stop selecting
GET_FREE_REGION"), which the robot identified when reporting an additional
failing module.  It was already present in the initial OpenRISC export
list.

Fixes: 616257669e1a ("OpenRISC: Miscellaneous")
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202610290106.o8Fs3NvO-lkp@intel.com/
Assisted-by: LLM
Reviewed-by: Bradley Morgan <brads@mainlining.org>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Karl Mehltretter <kmehltretter@gmail.com>
Cc: <stable@vger.kernel.org>
---

 arch/openrisc/kernel/or32_ksyms.c |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/openrisc/kernel/or32_ksyms.c~openrisc-export-mulsi3
+++ a/arch/openrisc/kernel/or32_ksyms.c
@@ -35,6 +35,7 @@ DECLARE_EXPORT(__divsi3);
 DECLARE_EXPORT(__umodsi3);
 DECLARE_EXPORT(__modsi3);
 DECLARE_EXPORT(__muldi3);
+DECLARE_EXPORT(__mulsi3);
 DECLARE_EXPORT(__ashrdi3);
 DECLARE_EXPORT(__ashldi3);
 DECLARE_EXPORT(__lshrdi3);
_

Patches currently in -mm which might be from akpm@linux-foundation.org are

openrisc-export-mulsi3.patch
maintainers-add-ipc-maintainers.patch
profile-account-for-partial-proc-profile-reads.patch
profile-simplify-proc-profile-read-layout.patch
ipc-msg-clamp-negative-statistics.patch
drivers-media-v4l2-core-v4l2-vp9c-reduce-inlining.patch