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Aditya Srivastava de93245c00 checkpatch: add warning for avoiding .L prefix symbols in assembly files 
objtool requires that all code must be contained in an ELF symbol.  Symbol
names that have a '.L' prefix do not emit symbol table entries, as they
have special meaning for the assembler.

'.L' prefixed symbols can be used within a code region, but should be
avoided for denoting a range of code via 'SYM_*_START/END' annotations.

Add a new check to emit a warning on finding the usage of '.L' symbols for
'.S' files, if it denotes range of code via SYM_*_START/END annotation
pair.

Link: https://lkml.kernel.org/r/20210123190459.9701-1-yashsri421@gmail.com
Link: https://lore.kernel.org/lkml/20210112210154.GI4646@sirena.org.uk
Signed-off-by: Aditya Srivastava <yashsri421@gmail.com>
Suggested-by: Mark Brown <broonie@kernel.org>
Acked-by: Joe Perches <joe@perches.com>
Acked-by: Nick Desaulniers <ndesaulniers@google.com>
Cc: Aditya Srivastava <yashsri421@gmail.com>
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Cc: Dwaipayan Ray <dwaipayanray1@gmail.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-02-26 09:41:04 -08:00
..
atomic
locking/atomics: Regenerate the atomics-check SHA1's
2020-11-07 13:20:41 +01:00
basic
kbuild: introduce hostprogs-always-y and userprogs-always-y
2020-08-10 01:32:59 +09:00
clang-tools
gen_compile_commands: prune some directories
2021-02-16 22:23:56 +09:00
coccinelle
of: Remove of_dev_{get,put}()
2021-02-12 19:23:39 -06:00
dtc
scripts/dtc: Add missing fdtoverlay to gitignore
2021-02-23 14:48:40 -08:00
dummy-tools
kbuild: simplify GCC_PLUGINS enablement in dummy-tools/gcc
2021-01-23 18:31:07 +09:00
gcc-plugins
gcc-plugins: fix gcc 11 indigestion with plugins...
2021-01-06 15:08:23 -08:00
gdb
kbuild: use always-y instead of extra-y
2021-02-16 12:01:45 +09:00
genksyms
genksyms: remove useless case DOTS
2021-02-16 12:01:45 +09:00
kconfig
kconfig: unify rule of config, menuconfig, nconfig, gconfig, xconfig
2021-02-24 15:12:06 +09:00
ksymoops
…
mod
Merge tag 'char-misc-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
2021-02-24 10:25:37 -08:00
package
builddeb: Fix rootless build in setuid/setgid directory
2020-11-02 11:31:00 +09:00
selinux
scripts/selinux,selinux: update mdp to enable policy capabilities
2020-08-17 20:42:00 -04:00
tracing
tweewide: Fix most Shebang lines
2020-12-08 23:30:04 +09:00
.gitignore
kbuild: preprocess module linker script
2020-09-25 00:36:41 +09:00
adjust_autoksyms.sh
kbuild: split adjust_autoksyms.sh in two parts
2020-03-03 20:49:21 +09:00
asn1_compiler.c
…
bin2c.c
…
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_helpers_doc.py
bpf: Add a bpf_sock_from_file helper
2020-12-04 22:32:40 +01:00
cc-can-link.sh
…
cc-version.sh
kbuild: check the minimum compiler version in Kconfig
2021-02-16 12:01:32 +09:00
check_extable.sh
…
check-sysctl-docs
docs: add a script to check sysctl docs
2020-02-25 03:35:16 -07:00
checkincludes.pl
…
checkkconfigsymbols.py
kconfig: remove '---help---' support
2020-08-14 13:30:03 +09:00
checkpatch.pl
checkpatch: add warning for avoiding .L prefix symbols in assembly files
2021-02-26 09:41:04 -08:00
checkstack.pl
scripts/checkstack.pl: fix arm sp regex
2020-05-26 00:03:16 +09:00
checksyscalls.sh
…
checkversion.pl
…
cleanfile
…
cleanpatch
…
coccicheck
scripts: coccicheck: Correct usage of make coccicheck
2020-12-24 12:59:43 +01:00
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: guess path to vmlinux by release name
2020-08-07 11:33:21 -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: switch explicitly to Python 3
2021-01-22 06:34:44 +09:00
documentation-file-ref-check
scripts: documentation-file-ref-check: Add line break before exit
2020-04-15 15:13:13 -06:00
export_report.pl
modpost: move the namespace field in Module.symvers last
2020-03-17 08:59:03 +09:00
extract_xc3028.pl
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 339
2019-06-05 17:37:07 +02:00
extract-cert.c
extract-cert: add static to local data
2020-08-18 20:16:46 +09:00
extract-ikconfig
…
extract-module-sig.pl
…
extract-sys-certs.pl
…
extract-vmlinux
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 378
2019-06-05 17:37:10 +02:00
faddr2line
…
file-size.sh
…
find-unused-docs.sh
scripts/find-unused-docs: Fix massive false positives
2020-01-27 14:25:06 -07:00
gcc-goto.sh
…
gcc-ld
…
gcc-x86_32-has-stack-protector.sh
…
gcc-x86_64-has-stack-protector.sh
…
gen_autoksyms.sh
kbuild: fix CONFIG_TRIM_UNUSED_KSYMS build for ppc64
2021-02-12 03:02:21 +09:00
gen_ksymdeps.sh
…
generate_initcall_order.pl
init: lto: ensure initcall ordering
2021-01-14 08:21:09 -08:00
get_abi.pl
tweewide: Fix most Shebang lines
2020-12-08 23:30:04 +09:00
get_dvb_firmware
…
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
…
headers_check.pl
…
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
…
jobserver-exec
kbuild: remove PYTHON variable
2021-02-01 10:37:19 +09:00
kallsyms.c
kallsyms: fix nonconverging kallsyms table with lld
2021-02-05 17:53:28 +09:00
Kbuild.include
kbuild: remove ld-version macro
2021-02-22 08:22:04 +09:00
Kconfig.include
kbuild: check the minimum linker version in Kconfig
2021-02-22 08:22:04 +09:00
kernel-doc
scripts/kernel-doc: add internal hyperlink to DOC: sections
2021-01-28 16:35:00 -07:00
ld-version.sh
kbuild: check the minimum linker version in Kconfig
2021-02-22 08:22:04 +09:00
leaking_addresses.pl
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166
2019-05-30 11:26:39 -07:00
Lindent
…
link-vmlinux.sh
kbuild: lto: postpone objtool
2021-02-23 12:46:57 -08:00
lto-used-symbollist.txt
kbuild: lto: add a default list of used symbols
2021-01-14 08:21:09 -08:00
Makefile
scripts: set proper OpenSSL include dir also for sign-file
2021-02-15 01:54:11 +09:00
Makefile.asm-generic
…
Makefile.build
Merge tag 'kbuild-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2021-02-25 10:17:31 -08:00
Makefile.clean
kbuild: remove deprecated 'always' and 'hostprogs-y/m'
2021-02-24 15:12:06 +09:00
Makefile.dtbinst
kbuild: Add support to build overlays (%.dtbo)
2021-02-04 09:00:04 -06:00
Makefile.extrawarn
Makefile.extrawarn: remove -Wnested-externs warning
2020-12-08 23:30:05 +09:00
Makefile.gcc-plugins
gcc-plugins/stackleak: Use asm instrumentation to avoid useless register saving
2020-06-24 07:48:28 -07:00
Makefile.headersinst
kbuild: move headers_check rule to usr/include/Makefile
2019-11-15 00:23:10 +09:00
Makefile.host
kbuild: sort hostprogs before passing it to ifneq
2020-08-10 01:32:59 +09:00
Makefile.kasan
kbuild: move CFLAGS_{KASAN,UBSAN,KCSAN} exports to relevant Makefiles
2020-09-25 00:36:50 +09:00
Makefile.kcov
kbuild: include scripts/Makefile.* only when relevant CONFIG is enabled
2020-08-10 01:32:59 +09:00
Makefile.kcsan
Merge tag 'kbuild-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2020-10-22 13:13:57 -07:00
Makefile.lib
Merge tag 'kbuild-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2021-02-25 10:17:31 -08:00
Makefile.modfinal
kbuild: lto: postpone objtool
2021-02-23 12:46:57 -08:00
Makefile.modinst
kbuild: modinst: read modules.order instead of $(MODVERDIR)/*.mod
2019-07-17 22:39:27 +09:00
Makefile.modpost
kbuild: lto: fix module versioning
2021-01-14 08:21:08 -08:00
Makefile.modsign
kbuild: modsign: read modules.order instead of $(MODVERDIR)/*.mod
2019-07-17 22:39:27 +09:00
Makefile.package
kbuild: fix broken builds because of GZIP,BZIP2,LZOP variables
2020-06-11 20:14:41 +09:00
Makefile.ubsan
ubsan: move cc-option tests into Kconfig
2020-12-15 22:46:18 -08:00
Makefile.userprogs
kbuild: add infrastructure to build userspace programs
2020-05-17 18:52:01 +09:00
makelst
…
markup_oops.pl
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 373
2019-06-05 17:37:10 +02:00
mkcompile_h
kbuild: Use uname for LINUX_COMPILE_HOST detection
2020-10-21 00:46:04 +09:00
mkmakefile
kbuild: get rid of $(realpath ...) from scripts/mkmakefile
2019-08-29 23:54:29 +09:00
mksysmap
mksysmap: Fix the mismatch of '.L' symbols in System.map
2020-06-06 23:39:20 +09:00
mkuboot.sh
…
module.lds.S
Merge tag 'modules-for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
2021-02-23 10:15:33 -08:00
modules-check.sh
kbuild: make module name conflict fatal error
2020-05-26 00:03:16 +09:00
nsdeps
kbuild: do not use scripts/ld-version.sh for checking spatch version
2020-12-12 18:31:29 +01:00
objdiff
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 199
2019-05-30 11:29:23 -07:00
parse-maintainers.pl
parse-maintainers: Do not sort section content by default
2020-03-26 15:08:27 -07:00
patch-kernel
…
profile2linkerlist.pl
…
prune-kernel
…
recordmcount.c
recordmcount: Fix build failure on non arm64
2020-08-10 15:22:06 +01:00
recordmcount.h
recordmcount: support >64k sections
2020-06-16 21:21:00 -04:00
recordmcount.pl
scripts/recordmcount.pl: support big endian for ARCH sh
2021-02-13 11:42:40 -08:00
setlocalversion
scripts/setlocalversion: make git describe output more reliable
2020-09-25 02:28:12 +09:00
show_delta
tweewide: Fix most Shebang lines
2020-12-08 23:30:04 +09:00
sign-file.c
…
sorttable.c
s390/kernel: expand exception table logic to allow new handling options
2020-07-20 10:55:50 +02:00
sorttable.h
scripts/sorttable: Implement build-time ORC unwind table sorting
2019-12-13 10:47:58 +01:00
spdxcheck-test.sh
…
spdxcheck.py
spdxcheck.py: Use Python 3
2021-01-27 14:50:12 +01:00
spelling.txt
scripts/spelling.txt: add more spellings to spelling.txt
2021-02-24 13:38:26 -08:00
sphinx-pre-install
Docs: drop Python 2 support
2021-02-01 17:17:14 -07:00
split-man.pl
tweewide: Fix most Shebang lines
2020-12-08 23:30:04 +09:00
stackdelta
…
stackusage
…
subarch.include
…
syscallhdr.sh
scripts: add generic syscallhdr.sh
2021-02-22 08:22:04 +09:00
syscalltbl.sh
scripts: add generic syscalltbl.sh
2021-02-22 08:22:03 +09:00
tags.sh
Merge branch 'locking/urgent' into locking/core, to pick up fixes
2020-10-09 08:55:17 +02:00
test_dwarf5_support.sh
Kconfig: allow explicit opt in to DWARF v5
2021-02-16 12:01:45 +09:00
tools-support-relr.sh
scripts/tools-support-relr.sh: un-quote variables
2019-11-13 10:52:05 +00:00
unifdef.c
…
ver_linux
ver_linux: Eliminate duplicate code in ldconfig processing logic
2021-01-27 14:54:42 +01:00
xen-hypercalls.sh
…
xz_wrap.sh
kbuild: add variables for compression tools
2020-06-06 23:42:01 +09:00