tjh.dev / kernel
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hardening: Disable GCC randstruct for COMPILE_TEST

There is a GCC crash bug in the randstruct for latest GCC versions that
is being tickled by landlock[1]. Temporarily disable GCC randstruct for
COMPILE_TEST builds to unbreak CI systems for the coming -rc2. This can
be restored once the bug is fixed.

Suggested-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/all/20250407-kbuild-disable-gcc-plugins-v1-1-5d46ae583f5e@kernel.org/ [1]
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20250409151154.work.872-kees@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>

Kees Cook f5c68a4e 62d32440

+1 -1
+1 -1
security/Kconfig.hardening
··· 344 344 345 345 choice 346 346 prompt "Randomize layout of sensitive kernel structures" 347 - default RANDSTRUCT_FULL if COMPILE_TEST && (GCC_PLUGINS || CC_HAS_RANDSTRUCT) 347 + default RANDSTRUCT_FULL if COMPILE_TEST && CC_HAS_RANDSTRUCT 348 348 default RANDSTRUCT_NONE 349 349 help 350 350 If you enable this, the layouts of structures that are entirely