Re: ld.lld: error: vmlinux.a(af_vsock.o at 1186296) <inline asm>:5:8: unpredictable STXR instruction, status is also a source

On Mon, 6 Jul 2026 at 10:44, kernel test robot <[email protected]> wrote:
>
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   8cdeaa50eae8dad34885515f62559ee83e7e8dda
> commit: 102eab95f025b4d3f3a6c0a858400aca2af2fe52 vsock: lock down child_ns_mode as write-once
> date:   4 months ago
> config: arm64-randconfig-001-20260706 (https://download.01.org/0day-ci/archive/20260706/[email protected]/config)
> compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260706/[email protected]/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
> | Fixes: 102eab95f025 ("vsock: lock down child_ns_mode as write-once")
> | Reported-by: kernel test robot <[email protected]>
> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
>
> All errors (new ones prefixed by >>):
>
> >> ld.lld: error: vmlinux.a(af_vsock.o at 1186296) <inline asm>:5:8: unpredictable STXR instruction, status is also a source
>    stlxr   w8, w8, [x21]
>    ^
>

Could this be related to https://github.com/llvm/llvm-project/issues/106380 ?
That issue seems fixed in llvm >= 20

Stefano