[PATCH v2 3/3] malloc: Remove currently broken memory tagging

[Yury Khrustalev]

Hello DJ,

On Wed, May 20, 2026 at 02:27:55PM +0100, Yury Khrustalev wrote:
> Remove AArch64-specific code, that is currently broken, from the
> core malloc implementation.
> 
> Code clean-up, no functional change unrelated to memory tagging.
> ---
>  malloc/malloc-check.c                         |  30 ++--
>  malloc/malloc.c                               | 163 ++----------------
>  sysdeps/aarch64/Makefile                      |   9 +-
>  ...__mtag_tag_region.S => __mte_tag_region.S} |   4 +-
>  ..._zero_region.S => __mte_tag_region_zero.S} |   4 +-
>  .../aarch64/{libc-mtag.h => aarch64-mte.h}    |  70 ++++----
>  sysdeps/generic/libc-mtag.h                   |  73 --------
>  7 files changed, 70 insertions(+), 283 deletions(-)
>  rename sysdeps/aarch64/{__mtag_tag_region.S => __mte_tag_region.S} (97%)
>  rename sysdeps/aarch64/{__mtag_tag_zero_region.S => __mte_tag_region_zero.S} (97%)
>  rename sysdeps/aarch64/{libc-mtag.h => aarch64-mte.h} (57%)
>  delete mode 100644 sysdeps/generic/libc-mtag.h

This is 2nd time that this patch failed to apply in this CI job:

  https://www.delorie.com/trybots/32bit/61280/

and I'm not sure why because it should apply cleanly (and it works
in the arm CI build).

DJ, could you clarify what is the problem here?

Thanks,
Yury