On Thu, Sep 03, 2020 at 01:30:41PM -0700, 'Sami Tolvanen' via Clang Built Linux wrote:

With LTO, the compiler can rename static functions to avoid global
naming collisions. As initcall functions are typically static,
renaming can break references to them in inline assembly. This
change adds a global stub with a stable name for each initcall to
fix the issue when PREL32 relocations are used.

Signed-off-by: Sami Tolvanen <samitolvanen@google.com>

This was a Delight(tm) to get right. Thanks for finding the right magic
here. :)

Reviewed-by: Kees Cook <redacted>

-- 
Kees Cook

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