init: lto: fix PREL32 relocations

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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>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20201211184633.3213045-9-samitolvanen@google.com

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Sami Tolvanen 2020-12-11 10:46:25 -08:00 • committed by Kees Cook

parent a8cccdd954

commit 3578ad11f3

1 changed files with 27 additions and 4 deletions

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include/linux/init.h

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