Re: ld.lld: error: Function Import: link error: linking module flags 'Code Model': IDs have conflicting values: 'i32 3' from vmlinux.a(init.o at 899876), and 'i32 1' from vmlinux.a(security.o at 937376)

[Nam Cao <namcao@linutronix.de>]

+Cc: linux-riscv@lists.infradead.org

On Sun, Jun 29, 2025 at 02:25:33AM +0800, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   aaf724ed69264719550ec4f194d3ab17b886af9a
> commit: 890ba5be6335dbbbc99af14ea007befb5f83f174 Revert "riscv: Define TASK_SIZE_MAX for __access_ok()"
> date:   5 days ago
> config: riscv-randconfig-001-20250628 (https://download.01.org/0day-ci/archive/20250629/202506290255.KBVM83vZ-lkp@intel.com/config)
> compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project e04c938cc08a90ae60440ce22d072ebc69d67ee8)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250629/202506290255.KBVM83vZ-lkp@intel.com/reproduce)
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202506290255.KBVM83vZ-lkp@intel.com/
> 
> All errors (new ones prefixed by >>):
> 
>    ld.lld: error: Function Import: link error: linking module flags 'Code Model': IDs have conflicting values: 'i32 3' from vmlinux.a(init.o at 899876), and 'i32 1' from vmlinux.a(net-traces.o at 1014596)
>    ld.lld: error: Function Import: link error: linking module flags 'Code Model': IDs have conflicting values: 'i32 3' from vmlinux.a(init.o at 899876), and 'i32 1' from vmlinux.a(e1000_main.o at 992876)
>    ld.lld: error: Function Import: link error: linking module flags 'Code Model': IDs have conflicting values: 'i32 3' from vmlinux.a(init.o at 899876), and 'i32 1' from vmlinux.a(core.o at 912236)
> >> ld.lld: error: Function Import: link error: linking module flags 'Code Model': IDs have conflicting values: 'i32 3' from vmlinux.a(init.o at 899876), and 'i32 1' from vmlinux.a(security.o at 937376)
> >> ld.lld: error: Function Import: link error: linking module flags 'Code Model': IDs have conflicting values: 'i32 3' from vmlinux.a(init.o at 899876), and 'i32 1' from vmlinux.a(sock.o at 1012256)
>    ld.lld: error: Function Import: link error: linking module flags 'Code Model': IDs have conflicting values: 'i32 3' from vmlinux.a(init.o at 899876), and 'i32 1' from vmlinux.a(ioctl.o at 1015736)
> >> ld.lld: error: Function Import: link error: linking module flags 'Code Model': IDs have conflicting values: 'i32 3' from vmlinux.a(init.o at 899876), and 'i32 1' from vmlinux.a(socket.o at 1012196)
>    ld.lld: error: Function Import: link error: linking module flags 'Code Model': IDs have conflicting values: 'i32 3' from vmlinux.a(init.o at 899876), and 'i32 1' from vmlinux.a(ring_buffer.o at 910076)
>    ld.lld: error: Function Import: link error: linking module flags 'Code Model': IDs have conflicting values: 'i32 3' from vmlinux.a(init.o at 899876), and 'i32 1' from vmlinux.a(hugetlb.o at 919016)
> >> ld.lld: error: Function Import: link error: linking module flags 'Code Model': IDs have conflicting values: 'i32 3' from vmlinux.a(init.o at 899876), and 'i32 1' from vmlinux.a(btf.o at 913916)
>    ld.lld: error: Function Import: link error: linking module flags 'Code Model': IDs have conflicting values: 'i32 3' from vmlinux.a(init.o at 899876), and 'i32 1' from vmlinux.a(page_alloc.o at 918536)
>    ld.lld: error: Function Import: link error: linking module flags 'Code Model': IDs have conflicting values: 'i32 3' from vmlinux.a(init.o at 899876), and 'i32 1' from vmlinux.a(slub.o at 918836)
>    ld.lld: error: Function Import: link error: linking module flags 'Code Model': IDs have conflicting values: 'i32 3' from vmlinux.a(init.o at 899876), and 'i32 1' from vmlinux.a(spi.o at 992036)
>    ld.lld: error: Function Import: link error: linking module flags 'Code Model': IDs have conflicting values: 'i32 3' from vmlinux.a(init.o at 899876), and 'i32 1' from vmlinux.a(vmalloc.o at 918296)
>    ld.lld: error: Function Import: link error: linking module flags 'Code Model': IDs have conflicting values: 'i32 3' from vmlinux.a(init.o at 899876), and 'i32 1' from vmlinux.a(syscall.o at 912296)
>    ld.lld: error: Function Import: link error: linking module flags 'Code Model': IDs have conflicting values: 'i32 3' from vmlinux.a(init.o at 899876), and 'i32 1' from vmlinux.a(trace.o at 910136)
>    ld.lld: error: Function Import: link error: linking module flags 'Code Model': IDs have conflicting values: 'i32 3' from vmlinux.a(init.o at 899876), and 'i32 1' from vmlinux.a(skbuff.o at 1012376)
>    ld.lld: error: Function Import: link error: linking module flags 'Code Model': IDs have conflicting values: 'i32 3' from vmlinux.a(init.o at 899876), and 'i32 1' from vmlinux.a(vmscan.o at 916376)
>    ld.lld: error: Function Import: link error: linking module flags 'Code Model': IDs have conflicting values: 'i32 3' from vmlinux.a(init.o at 899876), and 'i32 1' from vmlinux.a(xprtsock.o at 1024196)
>    ld.lld: error: Function Import: link error: linking module flags 'Code Model': IDs have conflicting values: 'i32 3' from vmlinux.a(init.o at 899876), and 'i32 1' from vmlinux.a(filemap.o at 915776)
>    ld.lld: error: too many errors emitted, stopping now (use --error-limit=0 to see all errors)

I'm not sure what lld is saying here. It seems this problem has always been
there, the revert commit just made it appears more.

These errors should still be investigated, but I think the revert commit is
fine.

I see CONFIG_CMODEL_MEDLOW=y, so probably has something to do with
arch/riscv/mm/init.c is compiled with -mcmodel=medany, while the others are
compiled with -mcmodel=medlow. I leave it to smarter minds..

Nam