Ubuntu-focal-kernel/scripts
Nathan Chancellor 61849b2ff5 kbuild: Fix '-S -c' in x86 stack protector scripts
BugLink: https://bugs.launchpad.net/bugs/2078388

commit 3415b10a03945b0da4a635e146750dfe5ce0f448 upstream.

After a recent change in clang to stop consuming all instances of '-S'
and '-c' [1], the stack protector scripts break due to the kernel's use
of -Werror=unused-command-line-argument to catch cases where flags are
not being properly consumed by the compiler driver:

  $ echo | clang -o - -x c - -S -c -Werror=unused-command-line-argument
  clang: error: argument unused during compilation: '-c' [-Werror,-Wunused-command-line-argument]

This results in CONFIG_STACKPROTECTOR getting disabled because
CONFIG_CC_HAS_SANE_STACKPROTECTOR is no longer set.

'-c' and '-S' both instruct the compiler to stop at different stages of
the pipeline ('-S' after compiling, '-c' after assembling), so having
them present together in the same command makes little sense. In this
case, the test wants to stop before assembling because it is looking at
the textual assembly output of the compiler for either '%fs' or '%gs',
so remove '-c' from the list of arguments to resolve the error.

All versions of GCC continue to work after this change, along with
versions of clang that do or do not contain the change mentioned above.

Cc: stable@vger.kernel.org
Fixes: 4f7fd4d7a7 ("[PATCH] Add the -fstack-protector option to the CFLAGS")
Fixes: 60a5317ff0 ("x86: implement x86_32 stack protector")
Link: 6461e53781 [1]
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
[nathan: Fixed conflict in 32-bit version due to lack of 3fb0fdb3bb]
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
2024-09-27 10:50:21 +02:00
..
atomic
basic
coccinelle
dtc
gcc-plugins gcc-plugins: Rename last_stmt() for GCC 14+ 2024-09-27 10:50:08 +02:00
gdb
genksyms
kconfig kconfig: remove wrong expr_trans_bool() 2024-09-27 10:50:08 +02:00
ksymoops
mod modpost: fix tee MODULE_DEVICE_TABLE built on big-endian host 2024-02-02 14:13:05 +01:00
package
selinux
tracing
.gitignore
Kbuild.include
Kconfig.include
Lindent
Makefile
Makefile.asm-generic
Makefile.build
Makefile.clean
Makefile.dtbinst
Makefile.extrawarn kbuild: Move -Wenum-{compare-conditional,enum-conversion} into W=1 2024-06-07 15:01:35 +02:00
Makefile.gcc-plugins
Makefile.headersinst
Makefile.host
Makefile.kasan
Makefile.kcov
Makefile.lib
Makefile.modbuiltin
Makefile.modfinal
Makefile.modinst
Makefile.modpost
Makefile.modsign
Makefile.package
Makefile.ubsan
adjust_autoksyms.sh
asn1_compiler.c
bin2c.c
bloat-o-meter
bootgraph.pl
bpf_helpers_doc.py scripts/bpf: Fix xdp_md forward declaration typo 2024-04-26 10:54:09 +02:00
cc-can-link.sh
check_extable.sh
checkincludes.pl
checkkconfigsymbols.py
checkpatch.pl
checkstack.pl
checksyscalls.sh
checkversion.pl
clang-version.sh
cleanfile
cleanpatch
coccicheck
config
conmakehash.c
const_structs.checkpatch
decode_stacktrace.sh
decodecode
depmod.sh
diffconfig
documentation-file-ref-check
export_report.pl
extract-cert.c
extract-ikconfig
extract-module-sig.pl
extract-sys-certs.pl
extract-vmlinux
extract_xc3028.pl
faddr2line
file-size.sh
find-unused-docs.sh
gcc-goto.sh
gcc-ld
gcc-plugin.sh
gcc-version.sh
gcc-x86_32-has-stack-protector.sh kbuild: Fix '-S -c' in x86 stack protector scripts 2024-09-27 10:50:21 +02:00
gcc-x86_64-has-stack-protector.sh kbuild: Fix '-S -c' in x86 stack protector scripts 2024-09-27 10:50:21 +02:00
gen_compile_commands.py
gen_ksymdeps.sh
get_abi.pl
get_dvb_firmware
get_maintainer.pl
gfp-translate
headerdep.pl
headers_check.pl
headers_install.sh
insert-sys-cert.c
kallsyms.c
kernel-doc stddef: Introduce DECLARE_FLEX_ARRAY() helper 2024-04-26 10:54:12 +02:00
kmsg-doc
ld-version.sh
leaking_addresses.pl
link-vmlinux.sh kbuild: Fix changing ELF file type for output of gen_btf for big endian 2024-03-28 15:18:42 +01:00
makelst
markup_oops.pl
mkcompile_h
mkmakefile
mksysmap
mkuboot.sh
module-common.lds
modules-check.sh
namespace.pl
nsdeps
objdiff
parse-maintainers.pl
patch-kernel
pnmtologo.c
profile2linkerlist.pl
prune-kernel
recordmcount.c
recordmcount.h
recordmcount.pl
setlocalversion
show_delta
sign-file.c sign-file: Fix incorrect return values check 2024-02-02 14:13:21 +01:00
sortextable.c
sortextable.h
spdxcheck-test.sh
spdxcheck.py
spelling.txt
sphinx-pre-install
split-man.pl
stackdelta
stackusage
subarch.include
tags.sh
tools-support-relr.sh
unifdef.c
ver_linux
xen-hypercalls.sh
xz_wrap.sh