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Andrey Konovalov 2bd926b439 kasan: add CONFIG_KASAN_GENERIC and CONFIG_KASAN_SW_TAGS 
This commit splits the current CONFIG_KASAN config option into two:
1. CONFIG_KASAN_GENERIC, that enables the generic KASAN mode (the one
   that exists now);
2. CONFIG_KASAN_SW_TAGS, that enables the software tag-based KASAN mode.

The name CONFIG_KASAN_SW_TAGS is chosen as in the future we will have
another hardware tag-based KASAN mode, that will rely on hardware memory
tagging support in arm64.

With CONFIG_KASAN_SW_TAGS enabled, compiler options are changed to
instrument kernel files with -fsantize=kernel-hwaddress (except the ones
for which KASAN_SANITIZE := n is set).

Both CONFIG_KASAN_GENERIC and CONFIG_KASAN_SW_TAGS support both
CONFIG_KASAN_INLINE and CONFIG_KASAN_OUTLINE instrumentation modes.

This commit also adds empty placeholder (for now) implementation of
tag-based KASAN specific hooks inserted by the compiler and adjusts
common hooks implementation.

While this commit adds the CONFIG_KASAN_SW_TAGS config option, this option
is not selectable, as it depends on HAVE_ARCH_KASAN_SW_TAGS, which we will
enable once all the infrastracture code has been added.

Link: http://lkml.kernel.org/r/b2550106eb8a68b10fefbabce820910b115aa853.1544099024.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2018-12-28 12:11:43 -08:00
..
basic kbuild: move bin2c back to scripts/ from scripts/basic/ 2018-07-18 01:18:05 +09:00
coccinelle drm: remove no longer needed drm-get-put coccinelle script 2018-11-24 22:12:56 +01:00
dtc Merge branch 'all-dtbs' into dt/next 2018-10-04 14:16:15 -05:00
gcc-plugins New gcc-plugin: 2018-12-27 11:19:07 -08:00
gdb
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genksyms genksyms: remove symbol prefix support 2018-05-17 22:43:35 +09:00
kconfig kconfig: merge_config: avoid false positive matches from comment lines 2018-11-11 23:04:51 +09:00
ksymoops
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mod Revert "kbuild/Makefile: Prepare for using macros in inline assembly code to work around asm() related GCC inlining bugs" 2018-12-19 12:00:28 +01:00
package builddeb: Fix inclusion of dtbs in debian package 2018-11-11 23:04:53 +09:00
selinux staging: lustre: delete the filesystem from the tree. 2018-06-05 19:22:35 +02:00
tracing scripts: Add Python 3 support to tracing/draw_functrace.py 2018-07-29 11:08:38 +09:00
.gitignore kbuild: move bin2c back to scripts/ from scripts/basic/ 2018-07-18 01:18:05 +09:00
Kbuild.include Revert "kbuild/Makefile: Prepare for using macros in inline assembly code to work around asm() related GCC inlining bugs" 2018-12-19 12:00:28 +01:00
Kconfig.include gcc-plugins: test plugin support in Kconfig and clean up Makefile 2018-06-11 09:16:22 +09:00
Lindent
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Makefile kbuild: consolidate Devicetree dtb build rules 2018-10-02 09:23:21 -05:00
Makefile.asm-generic
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Makefile.build x86/retpoline: Make CONFIG_RETPOLINE depend on compiler support 2018-11-28 11:57:03 +01:00
Makefile.clean kbuild: remove deprecated host-progs variable 2018-08-09 21:51:17 +09:00
Makefile.dtbinst
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Makefile.extrawarn Kbuild updates for v4.20 (2nd) 2018-11-03 10:47:33 -07:00
Makefile.gcc-plugins ARM: smp: add support for per-task stack canaries 2018-12-12 13:20:07 -08:00
Makefile.headersinst
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Makefile.host kbuild: Rename HOST_LOADLIBES to KBUILD_HOSTLDLIBS 2018-07-18 01:18:05 +09:00
Makefile.kasan kasan: add CONFIG_KASAN_GENERIC and CONFIG_KASAN_SW_TAGS 2018-12-28 12:11:43 -08:00
Makefile.kcov kcov: test compiler capability in Kconfig and correct dependency 2018-06-11 09:14:08 +09:00
Makefile.lib kbuild: consolidate Devicetree dtb build rules 2018-10-02 09:23:21 -05:00
Makefile.modbuiltin Kbuild: Makefile.modbuiltin: include auto.conf and tristate.conf mandatory 2018-08-03 00:47:00 +09:00
Makefile.modinst kbuild: remove duplicated comments about PHONY 2018-07-06 22:04:03 +09:00
Makefile.modpost kbuild: rename LDFLAGS to KBUILD_LDFLAGS 2018-08-24 08:22:08 +09:00
Makefile.modsign kbuild: remove duplicated comments about PHONY 2018-07-06 22:04:03 +09:00
Makefile.ubsan lib/ubsan: remove null-pointer checks 2018-08-10 20:19:58 -07:00
adjust_autoksyms.sh kbuild: remove CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX 2018-05-17 22:44:57 +09:00
asn1_compiler.c ASN.1: Remove unnecessary shadowed local variable 2018-10-29 00:19:41 +09:00
bin2c.c kbuild: move bin2c back to scripts/ from scripts/basic/ 2018-07-18 01:18:05 +09:00
bloat-o-meter syscalls/core, syscalls/x86: Clean up compat syscall stub naming convention 2018-04-09 16:47:28 +02:00
bootgraph.pl
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bpf_helpers_doc.py bpf: change eBPF helper doc parsing script to allow for smaller indent 2018-05-17 17:34:43 +02:00
cc-can-link.sh bpfilter: check compiler capability in Kconfig 2018-06-28 13:36:39 +09:00
check_extable.sh
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checkincludes.pl
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checkkconfigsymbols.py
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checkpatch.pl checkpatch.pl: Suggest lockdep instead of asserting !spin_is_locked() 2018-11-12 09:03:59 -08:00
checkstack.pl checkstack.pl: fix for aarch64 2018-12-14 15:05:45 -08:00
checksyscalls.sh parisc: syscalls: ignore nfsservctl for other architectures 2018-12-10 08:26:04 +01:00
checkversion.pl
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clang-version.sh kbuild: Add a space after `!` to prevent parsing as file pattern 2018-08-22 23:21:40 +09:00
cleanfile
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cleanpatch
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coccicheck coccicheck: return proper error code on fail 2018-08-14 08:58:56 +09:00
config
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conmakehash.c
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const_structs.checkpatch
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decode_stacktrace.sh
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decodecode
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depmod.sh kbuild: modules_install: warn when missing System.map file 2018-09-09 09:14:07 +09:00
diffconfig
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documentation-file-ref-check scripts/documentation-file-ref-check: ignore sched-pelt false positive 2018-07-02 11:25:00 -06:00
export_report.pl
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extract-cert.c
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extract-ikconfig
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extract-module-sig.pl
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extract-sys-certs.pl
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extract-vmlinux extract-vmlinux: Check for uncompressed image as fallback 2018-10-17 08:18:01 +02:00
extract_xc3028.pl MAINTAINERS & files: Canonize the e-mails I use at files 2018-05-04 06:21:06 -04:00
faddr2line scripts/faddr2line: fix location of start_kernel in comment 2018-11-18 10:15:09 -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
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gcc-goto.sh
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gcc-ld
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gcc-plugin.sh
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gcc-version.sh
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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
get_dvb_firmware
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get_maintainer.pl get_maintainer: allow option --mpath <directory> to read all files in <directory> 2018-08-22 10:52:48 -07:00
gfp-translate
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headerdep.pl
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headers.sh
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headers_check.pl
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headers_install.sh kbuild: Improve portability of some sed invocations 2018-03-26 02:01:18 +09:00
insert-sys-cert.c
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kallsyms.c kallsyms: remove left-over Blackfin code 2018-09-10 22:54:33 +09:00
kernel-doc kernel-doc: fix declaration type determination 2018-10-18 12:20:35 -06:00
ld-version.sh
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leaking_addresses.pl leaking_addresses: check if file name contains address 2018-04-07 08:50:34 +10:00
link-vmlinux.sh kbuild: rename LDFLAGS to KBUILD_LDFLAGS 2018-08-24 08:22:08 +09:00
makelst
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markup_oops.pl
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mkcompile_h
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mkmakefile kbuild: simplify command line creation in scripts/mkmakefile 2018-10-04 22:56:02 +09:00
mksysmap
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mkuboot.sh
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module-common.lds
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namespace.pl kbuild: rename built-in.o to built-in.a 2018-03-26 02:01:19 +09:00
objdiff
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parse-maintainers.pl
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patch-kernel
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pnmtologo.c
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profile2linkerlist.pl
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prune-kernel
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recordmcount.c scripts: Fixed printf format mismatch 2018-05-29 22:04:12 +09:00
recordmcount.h scripts: Fixed printf format mismatch 2018-05-29 22:04:12 +09:00
recordmcount.pl nds32/ftrace: Add RECORD_MCOUNT support 2018-09-04 14:45:18 +08:00
setlocalversion Revert "scripts/setlocalversion: git: Make -dirty check more robust" 2018-11-11 23:04:52 +09:00
show_delta
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sign-file.c
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sortextable.c
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sortextable.h
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spdxcheck.py scripts/spdxcheck.py: always open files in binary mode 2018-12-14 15:05:45 -08:00
spelling.txt treewide: correct "differenciate" and "instanciate" typos 2018-08-23 18:48:43 -07:00
sphinx-pre-install
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split-man.pl MAINTAINERS & files: Canonize the e-mails I use at files 2018-05-04 06:21:06 -04:00
stackdelta
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stackusage
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subarch.include selftests: add headers_install to lib.mk 2018-09-05 08:12:09 -06:00
tags.sh scripts/tags.sh: add DECLARE_HASHTABLE() 2018-10-26 16:25:18 -07:00
unifdef.c unifdef: use memcpy instead of strncpy 2018-11-30 14:45:01 -08:00
ver_linux ver_linux: Do not check for ver_linux pattern in version function 2018-07-07 17:44:52 +02:00
xen-hypercalls.sh
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xz_wrap.sh
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