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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
Documentation	…
LICENSES	…
arch	ARC: define ASM_NL and __ALIGN(_STR) outside #ifdef __ASSEMBLY__ guard	2023-07-11 19:39:49 +02:00
block	…
certs	…
crypto	crypto: jitter - correct health test during initialization	2023-07-11 19:39:49 +02:00
drivers	hwrng: st - keep clock enabled while hwrng is registered	2023-07-11 19:39:50 +02:00
fs	SMB3: Do not send lease break acknowledgment if all file handles have been closed	2023-07-11 19:39:50 +02:00
include	scsi: ufs: core: mcq: Fix the incorrect OCS value for the device command	2023-07-11 19:39:48 +02:00
init	kbuild: Fix CFI failures with GCOV	2023-07-11 19:39:50 +02:00
io_uring	…
ipc	…
kernel	kcsan: Don't expect 64 bits atomic builtins from 32 bits architectures	2023-07-11 19:39:47 +02:00
lib	…
mm	…
net	…
rust	…
samples	…
scripts	kbuild: Fix CFI failures with GCOV	2023-07-11 19:39:50 +02:00
security	…
sound	…
tools	perf test: Set PERF_EXEC_PATH for script execution	2023-07-11 19:39:49 +02:00
usr	…
virt	…
.clang-format	…
.cocciconfig	…
.get_maintainer.ignore	…
.gitattributes	…
.gitignore	…
.mailmap	…
.rustfmt.toml	…
COPYING	…
CREDITS	…
Kbuild	…
Kconfig	…
MAINTAINERS	…
Makefile	…
README	…

README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.