Sami Tolvanen a566122a8f kbuild: Fix CFI failures with GCOV ... [ Upstream commit ddf56288ee ] With GCOV_PROFILE_ALL, Clang injects __llvm_gcov_* functions to each object file, and the functions are indirectly called during boot. However, when code is injected to object files that are not part of vmlinux.o, it's also not processed by objtool, which breaks CFI hash randomization as the hashes in these files won't be included in the .cfi_sites section and thus won't be randomized. Similarly to commit 42633ed852 ("kbuild: Fix CFI hash randomization with KASAN"), disable GCOV for .vmlinux.export.o and init/version-timestamp.o to avoid emitting unnecessary functions to object files that don't otherwise have executable code. Fixes: 0c3e806ec0 ("x86/cfi: Add boot time hash randomization") Reported-by: Joe Fradley <joefradley@google.com> Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-07-11 19:39:50 +02:00
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.gitignore	kbuild: build init/built-in.a just once	2022-09-29 04:40:15 +09:00
build-version	kbuild: build init/built-in.a just once	2022-09-29 04:40:15 +09:00
calibrate.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
do_mounts_initrd.c	freezer,umh: Clean up freezer/initrd interaction	2022-09-07 21:53:48 +02:00
do_mounts_rd.c	init: add an init_unlink helper	2020-07-31 08:17:52 +02:00
do_mounts.c	init: move from strlcpy with unused retval to strscpy	2022-09-11 21:55:10 -07:00
do_mounts.h	init: add an init_mknod helper	2020-07-31 08:17:54 +02:00
init_task.c	rcu-tasks: Add data structures for lightweight grace periods	2022-06-20 09:22:28 -07:00
initramfs.c	init/initramfs: Fix argument forwarding to panic() in panic_show_mem()	2023-04-16 17:37:01 +09:00
Kconfig	gcc: disable '-Warray-bounds' for gcc-13 too	2023-04-23 09:56:20 -07:00
main.c	bootconfig: Change message if no bootconfig with CONFIG_BOOT_CONFIG_FORCE=y	2023-03-22 22:21:43 +09:00
Makefile	kbuild: Fix CFI failures with GCOV	2023-07-11 19:39:50 +02:00
noinitramfs.c	init: move usermodehelper_enable() to populate_rootfs()	2021-09-08 11:50:27 -07:00
version-timestamp.c	init/version-timestamp.c: remove unneeded #include <linux/version.h>	2023-01-09 07:34:38 +09:00
version.c	init/version.c: remove #include <generated/utsrelease.h>	2022-12-10 10:33:20 +09:00