Re: [GIT PULL] hardening updates for v6.17-rc1

[Linus Torvalds]

On Mon, 28 Jul 2025 at 17:01, Kees Cook <kees@xxxxxxxxxx> wrote:
>
> Please pull these hardening updates for v6.17-rc1. Some notable things
> that stand out diffstat: there are many scattered changes across arch code
> to clean up __init vs KCOV instrumentation. Most are landing here via
> the hardening tree but 2 landed separately in their respective trees:
> loongarch in v6.16 already, and platform-drivers-x86 that is queued
> for merging:

Is this the cause of the new

  section mismatch in reference: volume_set_software_mute+0x6f
(section: .text.unlikely) -> tpacpi_is_lenovo (section: .init.text)

warning?

It does seem to be a preexisting bug, with volume_set_software_mute()
(not init) calling tpacpi_is_lenovo (which is marked __init for some
unknown crazy reason).

I'm just not seeing what changed to *not* inline that trivial
single-instruction thing. So something really bad is happening to the
compiler because of this hardening change.

           Linus