Thomas Gleixner 4f5416710e vmlinux.lds.h: Create section for protection against instrumentation ... [ Upstream commit 6553896666 ] Some code pathes, especially the low level entry code, must be protected against instrumentation for various reasons: - Low level entry code can be a fragile beast, especially on x86. - With NO_HZ_FULL RCU state needs to be established before using it. Having a dedicated section for such code allows to validate with tooling that no unsafe functions are invoked. Add the .noinstr.text section and the noinstr attribute to mark functions. noinstr implies notrace. Kprobes will gain a section check later. Provide also a set of markers: instrumentation_begin()/end() These are used to mark code inside a noinstr function which calls into regular instrumentable text section as safe. The instrumentation markers are only active when CONFIG_DEBUG_ENTRY is enabled as the end marker emits a NOP to prevent the compiler from merging the annotation points. This means the objtool verification requires a kernel compiled with this option. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200505134100.075416272@linutronix.de Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-02-17 10:35:16 +01:00
..
atomic	locking/atomics: Use sed(1) instead of non-standard head(1) option	2019-06-25 10:17:07 +02:00
basic	kbuild: remove unneeded comments and code from scripts/basic/Makefile	2019-08-29 23:54:29 +09:00
coccinelle	scripts: add dummy report mode to add_namespace.cocci	2020-08-11 15:33:35 +02:00
dtc	scripts/dtc: only append to HOST_EXTRACFLAGS instead of overwriting	2020-10-07 08:01:29 +02:00
gcc-plugins	gcc-common.h: Update for GCC 10	2020-05-27 17:46:24 +02:00
gdb	scripts/gdb: fix lx-symbols 'gdb.error' while loading modules	2020-07-29 10:18:35 +02:00
genksyms	genksyms: convert to SPDX License Identifier for lex.l and parse.y	2019-09-14 11:40:13 +09:00
kconfig	kconfig: fix return value of do_error_if()	2020-12-30 11:51:29 +01:00
ksymoops
mod	vmlinux.lds.h: Create section for protection against instrumentation	2021-02-17 10:35:16 +01:00
package	kbuild: fix broken builds because of GZIP,BZIP2,LZOP variables	2020-09-03 11:27:10 +02:00
selinux	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156	2019-05-30 11:26:35 -07:00
tracing	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166	2019-05-30 11:26:39 -07:00
.gitignore	scripts: remove unnecessary ihex2fw and check-lc_ctypes from .gitignore	2018-12-22 00:37:52 +09:00
adjust_autoksyms.sh	kbuild: remove the first line of *.mod files	2019-07-18 02:19:31 +09:00
asn1_compiler.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36	2019-05-24 17:27:11 +02:00
bin2c.c	kbuild: move bin2c back to scripts/ from scripts/basic/	2018-07-18 01:18:05 +09:00
bloat-o-meter	bloat-o-meter: ignore __addressable_ symbols	2018-12-28 12:11:44 -08:00
bootgraph.pl	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 391	2019-06-05 17:37:11 +02:00
bpf_helpers_doc.py	bpf: fix script for generating man page on BPF helpers	2019-05-13 01:12:45 +02:00
cc-can-link.sh	bpfilter: check compiler capability in Kconfig	2018-06-28 13:36:39 +09:00
check_extable.sh
checkincludes.pl
checkkconfigsymbols.py	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166	2019-05-30 11:26:39 -07:00
checkpatch.pl	checkpatch: fix unescaped left brace	2020-12-30 11:51:27 +01:00
checkstack.pl	scripts/checkstack.pl: Fix arm64 wrong or unknown architecture	2019-06-05 02:33:10 +09:00
checksyscalls.sh	checksyscalls: fix up mq_timedreceive and stat exceptions	2019-02-19 21:27:53 +01:00
checkversion.pl
clang-version.sh	kbuild: update comment block of scripts/clang-version.sh	2019-03-04 22:34:54 +09:00
cleanfile
cleanpatch
coccicheck	coccicheck: return proper error code on fail	2018-08-14 08:58:56 +09:00
config	scripts/config: allow colons in option strings for sed	2020-05-10 10:31:27 +02:00
conmakehash.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 54	2019-05-24 17:36:42 +02:00
const_structs.checkpatch
decode_stacktrace.sh	scripts/decode_stacktrace: strip basepath from all paths	2020-07-29 10:18:35 +02:00
decodecode	scripts/decodecode: fix trapping instruction formatting	2020-05-14 07:58:29 +02:00
depmod.sh	depmod: handle the case of /sbin/depmod without /sbin in PATH	2021-01-12 20:16:10 +01:00
diffconfig
documentation-file-ref-check	scripts/documentation-file-ref-check: ignore output dir	2019-06-14 14:43:01 -06:00
export_report.pl	modpost: move the namespace field in Module.symvers last	2020-03-25 08:25:55 +01:00
extract-cert.c
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
extract_xc3028.pl	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 339	2019-06-05 17:37:07 +02:00
faddr2line	scripts/faddr2line: fix location of start_kernel in comment	2018-11-18 10:15:09 -08:00
file-size.sh
find-unused-docs.sh	scripts/find-unused-docs: Fix massive false positives	2020-02-11 04:35:23 -08:00
gcc-goto.sh	jump_label: move 'asm goto' support test to Kconfig	2019-01-06 09:46:51 +09:00
gcc-ld
gcc-plugin.sh
gcc-version.sh	kbuild: clean up scripts/gcc-version.sh	2019-03-04 22:35:04 +09:00
gcc-x86_32-has-stack-protector.sh	stack-protector: test compiler capability in Kconfig and drop AUTO mode	2018-06-08 18:56:00 +09:00
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_compile_commands.py	gen_compile_commands: lower the entry count threshold	2019-07-27 12:18:19 +09:00
gen_ksymdeps.sh	kbuild: simplify dependency generation for CONFIG_TRIM_UNUSED_KSYMS	2018-12-01 23:13:14 +09:00
get_abi.pl	doc: ABI scripts: add a SPDX header file	2019-06-21 16:58:37 +02:00
get_dvb_firmware	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61	2019-05-24 17:36:45 +02:00
get_maintainer.pl	get_maintainer: add ability to skip moderated mailing lists	2019-07-16 19:23:22 -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	scripts: headers_install: Exit with error on config leak	2020-06-24 17:50:33 +02:00
insert-sys-cert.c
kallsyms.c	scripts/kallsyms: fix definitely-lost memory leak	2020-01-04 19:18:23 +01:00
Kbuild.include	kbuild: improve cc-option to clean up all temporary files	2020-06-30 15:37:05 -04:00
Kconfig.include	kconfig: introduce m32-flag and m64-flag	2020-04-08 09:08:37 +02:00
kernel-doc	kernel-doc: Allow anonymous enum	2019-08-12 15:00:37 -06:00
ld-version.sh
leaking_addresses.pl	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166	2019-05-30 11:26:39 -07:00
Lindent
link-vmlinux.sh	bpf: Support llvm-objcopy for vmlinux BTF	2020-06-17 16:40:20 +02:00
Makefile	Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity	2019-09-27 19:37:27 -07:00
Makefile.asm-generic	kbuild: force all architectures except um to include mandatory-y	2019-03-17 12:56:32 +09:00
Makefile.build	kbuild: avoid split lines in .mod files	2020-12-30 11:50:57 +01:00
Makefile.clean	kbuild: clean up subdir-ymn calculation in Makefile.clean	2019-08-29 23:54:29 +09:00
Makefile.dtbinst
Makefile.extrawarn	kbuild: Disable -Wpointer-to-enum-cast	2020-03-25 08:25:54 +01:00
Makefile.gcc-plugins	gcc-plugins: structleak: Generalize to all variable types	2019-03-04 09:29:41 -08:00
Makefile.headersinst	kbuild: move headers_check rule to usr/include/Makefile	2020-03-05 16:43:47 +01:00
Makefile.host	kbuild: change *FLAGS_<basetarget>.o to take the path relative to $(obj)	2019-09-04 23:12:50 +09:00
Makefile.kasan	kasan/arm64: fix CONFIG_KASAN_SW_TAGS && KASAN_INLINE	2019-08-15 13:24:04 +01:00
Makefile.kcov	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile.lib	kbuild: fix broken builds because of GZIP,BZIP2,LZOP variables	2020-09-03 11:27:10 +02:00
Makefile.modbuiltin	kbuild: get rid of kernel/ prefix from in-tree modules.{order,builtin}	2019-07-17 22:39:27 +09:00
Makefile.modfinal	kbuild: move modkern_{c,a}flags to Makefile.lib from Makefile.build	2019-08-22 01:14:11 +09:00
Makefile.modinst	kbuild: modinst: read modules.order instead of $(MODVERDIR)/*.mod	2019-07-17 22:39:27 +09:00
Makefile.modpost	Modules updates for v5.4	2019-09-22 10:34:46 -07:00
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	2020-09-03 11:27:10 +02:00
Makefile.ubsan	ubsan: Remove vla bound checks.	2019-05-06 11:12:09 -07:00
makelst
markup_oops.pl	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 373	2019-06-05 17:37:10 +02:00
mkcompile_h	Kbuild: Handle PREEMPT_RT for version string and magic	2019-08-14 01:10:42 +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	2020-06-24 17:50:19 +02:00
mkuboot.sh
module-common.lds
modules-check.sh	kbuild: get rid of kernel/ prefix from in-tree modules.{order,builtin}	2019-07-17 22:39:27 +09:00
namespace.pl	namespace: fix namespace.pl script to support relative paths	2019-10-05 15:29:49 +09:00
nsdeps	scripts: add dummy report mode to add_namespace.cocci	2020-08-11 15:33:35 +02:00
objdiff	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 199	2019-05-30 11:29:23 -07:00
parse-maintainers.pl	parse-maintainers: Mark as executable	2020-03-25 08:25:49 +01:00
patch-kernel
pnmtologo.c
profile2linkerlist.pl
prune-kernel
recordmcount.c	recordmcount: Fix build failure on non arm64	2020-08-21 13:05:36 +02:00
recordmcount.h	recordmcount: support >64k sections	2020-06-30 15:37:05 -04:00
recordmcount.pl	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166	2019-05-30 11:26:39 -07:00
setlocalversion	scripts/setlocalversion: make git describe output more reliable	2020-11-01 12:01:01 +01:00
show_delta	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 438	2019-06-05 17:37:17 +02:00
sign-file.c
sortextable.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 378	2019-06-05 17:37:10 +02:00
sortextable.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 378	2019-06-05 17:37:10 +02:00
spdxcheck-test.sh	scripts: add spdxcheck.py self test	2018-12-28 12:11:44 -08:00
spdxcheck.py	spdxcheck.py: fix directory structures	2019-06-01 15:51:31 -07:00
spelling.txt	scripts/spelling.txt: add more spellings to spelling.txt	2019-07-12 11:05:41 -07:00
sphinx-pre-install	scripts/sphinx-pre-install: seek for Noto CJK fonts for pdf output	2019-07-17 06:57:52 -03:00
split-man.pl
stackdelta
stackusage
subarch.include	selftests: add headers_install to lib.mk	2018-09-05 08:12:09 -06:00
tags.sh	kbuild: add a flag to force absolute path for srctree	2019-07-11 00:05:09 +09:00
tools-support-relr.sh	scripts/tools-support-relr.sh: un-quote variables	2019-11-13 10:52:05 +00:00
unifdef.c	unifdef: use memcpy instead of strncpy	2018-11-30 14:45:01 -08:00
ver_linux	ver_linux: Assign constant RE to variable name for clarity	2019-01-22 13:34:35 +01:00
xen-hypercalls.sh
xz_wrap.sh	kbuild: add variables for compression tools	2020-09-03 11:27:10 +02:00