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Sami Tolvanen 7f2f58f015 kbuild: Disable GCOV for *.mod.o 
[ Upstream commit 25a21fbb93 ]

With GCOV_PROFILE_ALL, Clang injects __llvm_gcov_* functions to each
object file, including the *.mod.o. As we filter out CC_FLAGS_CFI
for *.mod.o, the compiler won't generate type hashes for the
injected functions, and therefore indirectly calling them during
module loading trips indirect call checking.

Enabling CFI for *.mod.o isn't sufficient to fix this issue after
commit 0c3e806ec0 ("x86/cfi: Add boot time hash randomization"),
as *.mod.o aren't processed by objtool, which means any hashes
emitted there won't be randomized. Therefore, in addition to
disabling CFI for *.mod.o, also disable GCOV, as the object files
don't otherwise contain any executable code.

Fixes: cf68fffb66 ("add support for Clang CFI")
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>
2023-08-20 15:24:38 +08:00
..
atomic atomics: Fix atomic64_{read_acquire,set_release} fallbacks 2023-04-19 17:47:17 +08:00
basic .gitignore: prefix local generated files with a slash 2021-05-02 00:43:35 +09:00
clang-tools scripts: handle BrokenPipeError for python scripts 2023-04-19 18:00:46 +08:00
coccinelle scripts: coccinelle: allow list_entry_is_head() to use pos 2021-08-08 22:00:49 +02:00
dtc kbuild: Allow kernel installation packaging to override pkg-config 2023-04-19 17:59:05 +08:00
dummy-tools kbuild: dummy-tools: avoid tmpdir leak in dummy gcc 2023-04-19 17:53:05 +08:00
gcc-plugins gcc-plugins: Reorganize gimple includes for GCC 13 2023-08-20 15:21:22 +08:00
gdb scripts/gdb: fix lx-timerlist for Python3 2023-06-06 18:37:32 +08:00
genksyms .gitignore: prefix local generated files with a slash 2021-05-02 00:43:35 +09:00
kconfig kconfig: Update config changed flag before calling callback 2023-04-19 18:00:53 +08:00
ksymoops
mod modpost: fix off by one in is_executable_section() 2023-08-20 15:24:37 +08:00
package builddeb: clean generated package content 2023-04-19 18:00:06 +08:00
selinux selinux: use "grep -E" instead of "egrep" 2023-04-19 17:55:08 +08:00
tracing ftrace/scripts: Update the instructions for ftrace-bisect.sh 2023-04-19 17:59:01 +08:00
.gitignore .gitignore: prefix local generated files with a slash 2021-05-02 00:43:35 +09:00
adjust_autoksyms.sh kbuild: redo fake deps at include/ksym/*.h 2021-09-03 08:17:21 +09:00
as-version.sh kbuild: Switch to 'f' variants of integrated assembler flag 2021-09-03 08:17:20 +09:00
asn1_compiler.c ASN.1: Fix check for strdup() success 2023-06-06 18:06:47 +08:00
bin2c.c kbuild: move bin2c back to scripts/ from scripts/basic/ 2018-07-18 01:18:05 +09:00
bloat-o-meter scripts: switch explicitly to Python 3 2021-01-22 06:34:44 +09:00
bootgraph.pl treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 391 2019-06-05 17:37:11 +02:00
bpf_doc.py bpf: Introduce bpf timers. 2021-07-15 22:31:10 +02:00
cc-can-link.sh bpfilter: check compiler capability in Kconfig 2018-06-28 13:36:39 +09:00
cc-version.sh kbuild: collect minimum tool versions into scripts/min-tool-version.sh 2021-04-25 05:14:26 +09:00
check-sysctl-docs docs: add a script to check sysctl docs 2020-02-25 03:35:16 -07:00
check_extable.sh scripts: check_extable: fix typo in user error message 2021-09-08 11:50:28 -07:00
checkdeclares.pl scripts: make some scripts executable 2021-08-10 09:13:25 +09:00
checkincludes.pl License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
checkkconfigsymbols.py scripts: handle BrokenPipeError for python scripts 2023-04-19 18:00:46 +08:00
checkpatch.pl Compiler Attributes: add __alloc_size() for better bounds checking 2023-04-19 17:51:05 +08:00
checkstack.pl scripts/checkstack.pl: fix arm sp regex 2020-05-26 00:03:16 +09:00
checksyscalls.sh checksyscalls: Unconditionally ignore fstat{,at}64 2021-10-07 17:16:28 -07:00
checkversion.pl scripts: checkversion: modernize linux/version.h search strings 2021-08-05 20:55:39 +09:00
cleanfile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cleanpatch License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
coccicheck scripts: coccicheck: fix troubles on non-English builds 2021-05-18 11:09:59 +02:00
config kconfig: config script: add a little user help 2021-01-04 10:38:11 +09:00
const_structs.checkpatch const_structs.checkpatch: add pinctrl_ops and pinmux_ops 2020-10-16 11:11:21 -07:00
decode_stacktrace.sh scripts/decode_stacktrace.sh: indicate 'auto' can be used for base path 2021-07-08 11:48:22 -07:00
decodecode scripts/decodecode: add the capability to supply the program counter 2020-10-13 18:38:26 -07:00
depmod.sh depmod: handle the case of /sbin/depmod without /sbin in PATH 2021-01-01 12:26:39 -08:00
dev-needs.sh scripts/dev-needs: Add script to list device dependencies 2020-09-04 18:19:37 +02:00
diffconfig scripts: handle BrokenPipeError for python scripts 2023-04-19 18:00:46 +08:00
documentation-file-ref-check documentation-file-ref-check: Make git check work for multiple working directories 2021-06-04 11:20:52 -06:00
export_report.pl modpost: move the namespace field in Module.symvers last 2020-03-17 08:59:03 +09:00
extract-cert.c cert host tools: Stop complaining about deprecated OpenSSL functions 2023-04-19 17:56:14 +08:00
extract-ikconfig scripts/extract-ikconfig: Support LZ4-compressed images. 2015-04-15 14:01:12 +02:00
extract-module-sig.pl License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
extract-sys-certs.pl License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
extract-vmlinux treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 378 2019-06-05 17:37:10 +02:00
extract_xc3028.pl treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 339 2019-06-05 17:37:07 +02:00
faddr2line scripts/faddr2line: Fix regression in name resolution on ppc64le 2023-04-19 17:56:46 +08:00
file-size.sh kbuild: Use ls(1) instead of stat(1) to obtain file size 2018-03-26 02:01:24 +09:00
find-unused-docs.sh scripts/find-unused-docs: Fix massive false positives 2020-01-27 14:25:06 -07:00
gcc-goto.sh jump_label: move 'asm goto' support test to Kconfig 2019-01-06 09:46:51 +09:00
gcc-ld License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gcc-x86_32-has-stack-protector.sh x86/stackprotector/32: Make the canary into a regular percpu variable 2021-03-08 13:19:05 +01:00
gcc-x86_64-has-stack-protector.sh stack-protector: Fix test with 32-bit userland and CONFIG_64BIT=y 2018-06-25 23:21:13 +09:00
gen_autoksyms.sh kbuild: Fix TRIM_UNUSED_KSYMS with LTO_CLANG 2021-09-03 08:12:39 +09:00
gen_ksymdeps.sh kbuild: redo fake deps at include/ksym/*.h 2021-09-03 08:17:21 +09:00
generate_initcall_order.pl init: lto: ensure initcall ordering 2021-01-14 08:21:09 -08:00
get_abi.pl scripts: get_abi: ignore code blocks for cross-references 2021-03-31 13:53:16 -06:00
get_dvb_firmware treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
get_feat.pl scripts: get_feat.pl: reduce table width for all features output 2020-12-04 14:34:27 -07:00
get_maintainer.pl get_maintainer: exclude MAINTAINERS file(s) from --git-fallback 2020-10-16 11:11:19 -07:00
gfp-translate treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
headerdep.pl License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
headers_check.pl License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
headers_install.sh Merge branch 'work.fdpic' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-08-07 13:29:39 -07:00
insert-sys-cert.c KEYS: Reserve an extra certificate symbol for inserting without recompiling 2016-02-26 15:30:20 +00:00
jobserver-exec scripts/jobserver-exec: Fix a typo ("envirnoment") 2021-05-17 12:10:03 +09:00
kallsyms.c kallsyms: fix nonconverging kallsyms table with lld 2021-02-05 17:53:28 +09:00
Kbuild.include kbuild: remove the target in signal traps when interrupted 2023-04-19 17:55:28 +08:00
Kconfig.include kbuild: check the minimum assembler version in Kconfig 2021-04-25 05:14:41 +09:00
kernel-doc stddef: Introduce DECLARE_FLEX_ARRAY() helper 2023-04-19 17:51:06 +08:00
ld-version.sh kbuild: collect minimum tool versions into scripts/min-tool-version.sh 2021-04-25 05:14:26 +09:00
leaking_addresses.pl leaking_addresses: Always print a trailing newline 2023-04-19 16:57:11 +08:00
Lindent License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
link-vmlinux.sh kbuild: Unify options for BTF generation for vmlinux and modules 2023-04-19 17:53:41 +08:00
Makefile kbuild: Allow kernel installation packaging to override pkg-config 2023-04-19 17:59:05 +08:00
Makefile.asm-generic kbuild: prefix $(srctree)/ to some included Makefiles 2021-03-15 19:20:48 +09:00
Makefile.build x86/retbleed: Add fine grained Kconfig knobs 2023-04-19 17:51:33 +08:00
Makefile.clang kbuild: Add -Werror=ignored-optimization-argument to CLANG_FLAGS 2021-09-19 10:55:18 +09:00
Makefile.clean kbuild: prefix $(srctree)/ to some included Makefiles 2021-03-15 19:20:48 +09:00
Makefile.compiler kbuild: remove TMPO from try-run 2021-04-25 05:25:56 +09:00
Makefile.dtbinst kbuild: prefix $(srctree)/ to some included Makefiles 2021-03-15 19:20:48 +09:00
Makefile.extrawarn Makefile.extrawarn: Move -Wcast-function-type-strict to W=1 2023-04-19 17:54:13 +08:00
Makefile.gcc-plugins gcc-plugins: Undefine LATENT_ENTROPY_PLUGIN when plugin disabled for a file 2023-04-19 17:53:09 +08:00
Makefile.headersinst kbuild: prefix $(srctree)/ to some included Makefiles 2021-03-15 19:20:48 +09:00
Makefile.host kbuild: sort hostprogs before passing it to ifneq 2020-08-10 01:32:59 +09:00
Makefile.kasan kasan: always respect CONFIG_KASAN_STACK 2021-09-24 16:13:35 -07:00
Makefile.kcov kbuild: include scripts/Makefile.* only when relevant CONFIG is enabled 2020-08-10 01:32:59 +09:00
Makefile.kcsan Kbuild updates for v5.10 2020-10-22 13:13:57 -07:00
Makefile.lib kbuild: move objtool_args back to scripts/Makefile.build 2023-04-19 17:48:43 +08:00
Makefile.modfinal kbuild: Disable GCOV for *.mod.o 2023-08-20 15:24:38 +08:00
Makefile.modinst kbuild: add support for zstd compressed modules 2021-04-25 05:25:06 +09:00
Makefile.modpost kbuild: Fix include path in scripts/Makefile.modpost 2023-04-19 17:53:29 +08:00
Makefile.package kbuild: deb-pkg: change the source package name to linux-upstream 2021-04-25 05:30:45 +09:00
Makefile.ubsan ubsan: remove CONFIG_UBSAN_OBJECT_SIZE 2023-04-19 17:47:52 +08:00
Makefile.userprogs kbuild: add infrastructure to build userspace programs 2020-05-17 18:52:01 +09:00
makelst License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
markup_oops.pl treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 373 2019-06-05 17:37:10 +02:00
min-tool-version.sh Documentation: raise minimum supported version of GCC to 5.1 2021-09-13 10:18:28 -07:00
mkcompile_h kbuild: mkcompile_h: consider timestamp if KBUILD_BUILD_TIMESTAMP is set 2021-06-17 10:01:12 +09:00
mksysmap mksysmap: Fix the mismatch of 'L0' symbols in System.map 2023-04-19 17:53:56 +08:00
mkuboot.sh License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
module.lds.S modules: Ensure natural alignment for .altinstructions and __bug_table sections 2023-04-19 17:53:14 +08:00
modules-check.sh kbuild: check module name conflict for external modules as well 2021-04-25 05:22:42 +09:00
nsdeps kbuild: replace LANG=C with LC_ALL=C 2021-05-02 00:43:35 +09:00
objdiff treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 199 2019-05-30 11:29:23 -07:00
pahole-flags.sh scripts/pahole-flags.sh: Use pahole-version.sh 2023-04-19 17:59:33 +08:00
pahole-version.sh kbuild: Add CONFIG_PAHOLE_VERSION 2023-04-19 17:59:33 +08:00
parse-maintainers.pl parse-maintainers: Do not sort section content by default 2020-03-26 15:08:27 -07:00
patch-kernel License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
profile2linkerlist.pl License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
prune-kernel License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
recordmcount.c recordmcount: Fix memory leaks in the uwrite function 2023-06-06 18:39:32 +08:00
recordmcount.h recordmcount: Correct st_shndx handling 2021-06-18 09:09:17 -04:00
recordmcount.pl recordmcount.pl: fix typo in s390 mcount regex 2023-04-19 17:43:29 +08:00
remove-stale-files kbuild: add a script to remove stale generated files 2021-05-02 00:43:35 +09:00
setlocalversion scripts/setlocalversion: fix a bug when LOCALVERSION is empty 2021-07-18 23:48:14 +09:00
show_delta tweewide: Fix most Shebang lines 2020-12-08 23:30:04 +09:00
sign-file.c cert host tools: Stop complaining about deprecated OpenSSL functions 2023-04-19 17:56:14 +08:00
sorttable.c x86/extable: Rework the exception table mechanics 2023-04-19 17:51:45 +08:00
sorttable.h scripts/sorttable: Implement build-time ORC unwind table sorting 2019-12-13 10:47:58 +01:00
spdxcheck-test.sh scripts/spdxcheck-test.sh: Drop python2 2021-07-21 15:59:32 +02:00
spdxcheck.py scripts/spdxcheck.py: Strictly read license files in utf-8 2021-07-12 09:56:50 -06:00
spelling.txt scripts/spelling.txt: add more spellings to spelling.txt 2021-06-29 10:53:45 -07:00
sphinx-pre-install scripts: sphinx-pre-install: Fix ctex support on Debian 2023-04-19 17:44:45 +08:00
split-man.pl tweewide: Fix most Shebang lines 2020-12-08 23:30:04 +09:00
stackdelta License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
stackusage License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
subarch.include parisc: Fix compile failure when building 64-bit kernel natively 2021-09-01 21:52:02 +02:00
syscallhdr.sh scripts: check duplicated syscall number in syscall table 2021-07-09 04:00:39 +09:00
syscallnr.sh scripts: make some scripts executable 2021-08-10 09:13:25 +09:00
syscalltbl.sh scripts: check duplicated syscall number in syscall table 2021-07-09 04:00:39 +09:00
tags.sh scripts/tags.sh: Resolve gtags empty index generation 2023-08-20 15:24:11 +08:00
tools-support-relr.sh Makefile: fix GDB warning with CONFIG_RELR 2021-06-08 13:09:34 +01:00
unifdef.c unifdef: use memcpy instead of strncpy 2018-11-30 14:45:01 -08:00
ver_linux Removed the oprofiled version option 2021-05-03 17:23:06 -06:00
xen-hypercalls.sh scripts: make some scripts executable 2021-08-10 09:13:25 +09:00
xz_wrap.sh kbuild: add variables for compression tools 2020-06-06 23:42:01 +09:00