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Nathan Chancellor cbcb9c9baf Makefile.extrawarn: Move -Wunaligned-access to W=1 
commit 1cf5f151d2 upstream.

-Wunaligned-access is a new warning in clang that is default enabled for
arm and arm64 under certain circumstances within the clang frontend (see
LLVM commit below). On v5.17-rc2, an ARCH=arm allmodconfig build shows
1284 total/70 unique instances of this warning (most of the instances
are in header files), which is quite noisy.

To keep a normal build green through CONFIG_WERROR, only show this
warning with W=1, which will allow automated build systems to catch new
instances of the warning so that the total number can be driven down to
zero eventually since catching unaligned accesses at compile time would
be generally useful.

Cc: stable@vger.kernel.org
Link: 35737df4dc
Link: https://github.com/ClangBuiltLinux/linux/issues/1569
Link: https://github.com/ClangBuiltLinux/linux/issues/1576
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
[nathan: Fix conflict due to lack of afe956c577]
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2022-02-23 11:57:32 +01:00
..
basic fixdep: trivial: typo fix and correction 2017-08-10 01:01:03 +09:00
coccinelle fs: stream_open - opener for stream-like files so that read and write can run simultaneously without deadlock 2019-06-11 12:21:51 +02:00
dtc scripts/dtc: dtx_diff: remove broken example from help text 2022-01-27 09:01:01 +01:00
gcc-plugins gcc-common.h: Update for GCC 10 2020-05-27 16:42:53 +02:00
gdb scripts/gdb: fix debugging modules compiled with hot/cold partitioning 2019-12-05 15:37:04 +01:00
genksyms License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
kconfig kconfig: nconf: stop endless search loops 2021-05-22 10:57:37 +02:00
ksymoops Fix dead URLs to ftp.kernel.org 2017-03-28 16:16:52 +02:00
mod modpost: skip ELF local symbols during section mismatch check 2019-12-17 20:38:30 +01:00
package builddeb: Fix header package regarding dtc source links 2018-05-30 07:52:21 +02:00
selinux selinux: use kernel linux/socket.h for genheaders and mdp 2019-05-04 09:15:17 +02:00
tracing scripts/tracing: fix the bug that can't parse raw_trace_func 2021-08-15 13:03:31 +02:00
.gitignore Docs: clean up some DocBook loose ends 2017-06-23 14:17:38 -06:00
Kbuild.include kbuild: improve cc-option to clean up all temporary files 2020-06-30 15:38:06 -04:00
Lindent License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile scripts: set proper OpenSSL include dir also for sign-file 2021-03-07 11:27:41 +01:00
Makefile.asm-generic License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile.build tracing: Avoid calling cc-option -mrecord-mcount for every Makefile 2021-02-23 14:00:33 +01:00
Makefile.clean License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile.dtbinst License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile.extrawarn Makefile.extrawarn: Move -Wunaligned-access to W=1 2022-02-23 11:57:32 +01:00
Makefile.gcc-plugins License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile.headersinst License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile.help
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Makefile.host License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile.kasan kasan: rework Kconfig settings 2018-02-16 20:23:04 +01:00
Makefile.lib kbuild: Handle builtin dtb file names containing hyphens 2018-03-15 10:54:33 +01:00
Makefile.modbuiltin License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile.modinst License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile.modpost kbuild: modpost: handle KBUILD_EXTRA_SYMBOLS only for external modules 2019-08-25 10:50:14 +02:00
Makefile.modsign License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile.ubsan License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
adjust_autoksyms.sh kbuild: make scripts/adjust_autoksyms.sh robust against timestamp races 2018-05-30 07:52:17 +02:00
asn1_compiler.c ASN.1: fix open failure check on headername 2016-04-06 14:06:48 +01:00
bloat-o-meter scripts: switch explicitly to Python 3 2021-06-03 08:36:11 +02:00
bootgraph.pl scripts: Switch to more portable Perl shebang 2017-05-14 11:20:44 +09:00
check_00index.sh License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
check_extable.sh License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
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 checkkconfigsymbols.py: support Kconfig's 'imply' statement 2017-02-03 11:49:06 +01:00
checkpatch.pl checkpatch: fix unescaped left brace 2020-12-29 13:47:02 +01:00
checkstack.pl scripts/checkstack.pl: Fix arm64 wrong or unknown architecture 2019-06-25 11:36:53 +08:00
checksyscalls.sh License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
checkversion.pl License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
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 coccinelle: fix parallel build with CHECK=scripts/coccicheck 2017-12-14 09:53:06 +01:00
config tweewide: Fix most Shebang lines 2021-06-03 08:36:11 +02:00
conmakehash.c
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const_structs.checkpatch const_structs.checkpatch: add frequently used from Julia Lawall's list 2016-10-11 15:06:30 -07:00
decode_stacktrace.sh scripts/decode_stacktrace: strip basepath from all paths 2020-07-29 07:42:54 +02:00
decodecode scripts/decodecode: fix trapping instruction formatting 2020-05-20 08:17:01 +02:00
depmod.sh depmod: handle the case of /sbin/depmod without /sbin in PATH 2021-01-12 20:09:06 +01:00
diffconfig scripts: switch explicitly to Python 3 2021-06-03 08:36:11 +02:00
export_report.pl scripts: Switch to more portable Perl shebang 2017-05-14 11:20:44 +09:00
extract-cert.c KEYS: Remove unnecessary header #inclusions from extract-cert.c 2015-09-25 16:31:45 +01:00
extract-ikconfig
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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
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extract_xc3028.pl scripts: Switch to more portable Perl shebang 2017-05-14 11:20:44 +09:00
faddr2line scripts/faddr2line: fix CROSS_COMPILE unset error 2018-02-07 11:12:17 -08:00
gcc-goto.sh License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
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-plugin.sh License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gcc-version.sh 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 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gcc-x86_64-has-stack-protector.sh License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gen_initramfs_list.sh Kbuild misc updates for 4.13 2017-07-07 15:09:09 -07:00
get_dvb_firmware scripts: Switch to more portable Perl shebang 2017-05-14 11:20:44 +09:00
get_maintainer.pl get_maintainer: Prepare for separate MAINTAINERS files 2017-08-08 11:09:31 -07:00
gfp-translate
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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.sh 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 linux/compiler.h: Split into compiler.h and compiler_types.h 2017-12-25 14:26:33 +01:00
insert-sys-cert.c KEYS: Reserve an extra certificate symbol for inserting without recompiling 2016-02-26 15:30:20 +00:00
kallsyms.c scripts/kallsyms: fix definitely-lost memory leak 2020-01-04 13:59:51 +01:00
kernel-doc scripts/kernel-doc: Don't fail with status != 0 if error encountered with -none 2018-02-25 11:07:58 +01:00
ld-version.sh License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
leaking_addresses.pl leaking_addresses: Always print a trailing newline 2021-11-26 11:40:28 +01:00
link-vmlinux.sh License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
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 scripts: Switch to more portable Perl shebang 2017-05-14 11:20:44 +09:00
mkcompile_h kbuild: mkcompile_h: consider timestamp if KBUILD_BUILD_TIMESTAMP is set 2021-07-28 11:12:15 +02:00
mkmakefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mksysmap mksysmap: Fix the mismatch of '.L' symbols in System.map 2020-06-25 15:41:50 +02:00
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-common.lds module: set .init_array alignment to 8 2017-03-13 09:40:28 -07:00
namespace.pl namespace: fix namespace.pl script to support relative paths 2019-10-29 09:16:59 +01:00
objdiff scripts: objdiff: Ignore debug info when comparing 2017-03-11 11:13:38 +09:00
parse-maintainers.pl parse-maintainers: Mark as executable 2020-04-02 16:34:15 +02:00
patch-kernel License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pnmtologo.c
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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 scripts/recordmcount.{c,pl}: support -ffunction-sections .text.* section names 2021-03-17 16:34:28 +01:00
recordmcount.h recordmcount: Fix spurious mcount entries on powerpc 2019-07-31 07:28:53 +02:00
recordmcount.pl recordmcount.pl: fix typo in s390 mcount regex 2022-01-05 12:33:48 +01:00
setlocalversion scripts/setlocalversion: make git describe output more reliable 2020-11-05 11:06:51 +01:00
show_delta tweewide: Fix most Shebang lines 2021-06-03 08:36:11 +02:00
sign-file.c sign-file: fix build error in sign-file.c with libressl 2017-02-10 12:43:47 +11:00
sortextable.c powerpc: Build-time sort the exception table 2016-11-14 11:11:51 +11:00
sortextable.h
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spelling.txt scripts/spelling.txt: add more spelling mistakes to spelling.txt 2017-10-03 17:54:23 -07:00
sphinx-pre-install tweewide: Fix most Shebang lines 2021-06-03 08:36:11 +02:00
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
tags.sh tags: honor COMPILED_SOURCE with apart output directory 2017-06-06 08:42:34 +09:00
unifdef.c unifdef: use memcpy instead of strncpy 2018-12-08 13:03:35 +01:00
ver_linux License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xen-hypercalls.sh License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xz_wrap.sh
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