Andrey Ryabinin
7771bdbbfd
kasan: remove use after scope bugs detection. ...
Use after scope bugs detector seems to be almost entirely useless for
the linux kernel. It exists over two years, but I've seen only one
valid bug so far [1]. And the bug was fixed before it has been
reported. There were some other use-after-scope reports, but they were
false-positives due to different reasons like incompatibility with
structleak plugin.
This feature significantly increases stack usage, especially with GCC <
9 version, and causes a 32K stack overflow. It probably adds
performance penalty too.
Given all that, let's remove use-after-scope detector entirely.
While preparing this patch I've noticed that we mistakenly enable
use-after-scope detection for clang compiler regardless of
CONFIG_KASAN_EXTRA setting. This is also fixed now.
[1] http://lkml.kernel.org/r/ <20171129052106.rhgbjhhis53hkgfn@wfg-t540p.sh.intel.com>
Link: http://lkml.kernel.org/r/20190111185842.13978-1-aryabinin@virtuozzo.com
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Acked-by: Will Deacon <will.deacon@arm.com> [arm64]
Cc: Qian Cai <cai@lca.pw>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-05 21:07:13 -08:00
kbuild: simplify dependency generation for CONFIG_TRIM_UNUSED_KSYMS
2018-12-01 23:13:14 +09:00
dma-mapping: remove dma_zalloc_coherent()
2019-01-08 07:58:49 -05:00
Merge branch 'yaml-bindings-for-v4.21' into dt/next
2018-12-13 11:20:36 -06:00
kasan: remove use after scope bugs detection.
2019-03-05 21:07:13 -08:00
scripts/gdb: fix lx-version string output
2019-01-04 13:13:47 -08:00
genksyms: remove symbol prefix support
2018-05-17 22:43:35 +09:00
kconfig: clean generated *conf-cfg files
2019-01-14 10:37:09 +09:00
x86, modpost: Replace last remnants of RETPOLINE with CONFIG_RETPOLINE
2019-01-09 10:35:56 +01:00
kbuild: remove redundant 'set -e' from cmd_* defines
2018-12-01 23:13:14 +09:00
genheaders: %-<width>s had been there since v6; %-*s - since v7
2018-12-10 03:40:11 -05:00
scripts: Add Python 3 support to tracing/draw_functrace.py
2018-07-29 11:08:38 +09:00
scripts: remove unnecessary ihex2fw and check-lc_ctypes from .gitignore
2018-12-22 00:37:52 +09:00
kbuild: remove CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX
2018-05-17 22:44:57 +09:00
ASN.1: Remove unnecessary shadowed local variable
2018-10-29 00:19:41 +09:00
kbuild: move bin2c back to scripts/ from scripts/basic/
2018-07-18 01:18:05 +09:00
bloat-o-meter: ignore __addressable_ symbols
2018-12-28 12:11:44 -08:00
bpf: change eBPF helper doc parsing script to allow for smaller indent
2018-05-17 17:34:43 +02:00
bpfilter: check compiler capability in Kconfig
2018-06-28 13:36:39 +09:00
checkpatch: add Co-developed-by to signature tags
2019-01-04 13:13:48 -08:00
scripts/checkstack.pl: dynamic stack growth for aarch64
2018-12-28 12:11:44 -08:00
parisc: syscalls: ignore nfsservctl for other architectures
2018-12-10 08:26:04 +01:00
kbuild: Add a space after ! to prevent parsing as file pattern
2018-08-22 23:21:40 +09:00
coccicheck: return proper error code on fail
2018-08-14 08:58:56 +09:00
scripts/decode_stacktrace: only strip base path when a prefix of the path
2018-12-28 12:11:44 -08:00
scripts/decodecode: set ARCH when running natively on arm/arm64
2018-12-28 12:11:44 -08:00
kbuild: modules_install: warn when missing System.map file
2018-09-09 09:14:07 +09:00
scripts/documentation-file-ref-check: ignore sched-pelt false positive
2018-07-02 11:25:00 -06:00
extract-vmlinux: Check for uncompressed image as fallback
2018-10-17 08:18:01 +02:00
MAINTAINERS & files: Canonize the e-mails I use at files
2018-05-04 06:21:06 -04:00
scripts/faddr2line: fix location of start_kernel in comment
2018-11-18 10:15:09 -08:00
kbuild: Use ls(1) instead of stat(1) to obtain file size
2018-03-26 02:01:24 +09:00
jump_label: move 'asm goto' support test to Kconfig
2019-01-06 09:46:51 +09:00
stack-protector: test compiler capability in Kconfig and drop AUTO mode
2018-06-08 18:56:00 +09:00
stack-protector: Fix test with 32-bit userland and CONFIG_64BIT=y
2018-06-25 23:21:13 +09:00
scripts: add a tool to produce a compile_commands.json file
2018-12-19 23:41:36 +09:00
kbuild: simplify dependency generation for CONFIG_TRIM_UNUSED_KSYMS
2018-12-01 23:13:14 +09:00
get_maintainer: allow option --mpath <directory> to read all files in <directory>
2018-08-22 10:52:48 -07:00
kbuild: Improve portability of some sed invocations
2018-03-26 02:01:18 +09:00
kallsyms: Handle too long symbols in kallsyms.c
2019-01-28 13:02:09 +09:00
kbuild: remove unused baseprereq
2019-01-14 12:19:40 +09:00
gcc-plugins: test plugin support in Kconfig and clean up Makefile
2018-06-11 09:16:22 +09:00
scripts/kernel-doc: Fix struct and struct field attribute processing
2018-11-25 12:35:45 -07:00
leaking_addresses: check if file name contains address
2018-04-07 08:50:34 +10:00
kbuild: rename LDFLAGS to KBUILD_LDFLAGS
2018-08-24 08:22:08 +09:00
kbuild: descend into scripts/gcc-plugins/ via scripts/Makefile
2018-12-01 23:09:38 +09:00
kbuild: generate asm-generic wrappers if mandatory headers are missing
2019-01-06 09:46:51 +09:00
Kbuild updates for v4.21
2018-12-29 12:03:17 -08:00
kbuild: remove deprecated host-progs variable
2018-08-09 21:51:17 +09:00
Kbuild updates for v4.20 (2nd)
2018-11-03 10:47:33 -07:00
Kbuild updates for v4.21
2018-12-29 12:03:17 -08:00
kbuild: generate asm-generic wrappers if mandatory headers are missing
2019-01-06 09:46:51 +09:00
kbuild: Rename HOST_LOADLIBES to KBUILD_HOSTLDLIBS
2018-07-18 01:18:05 +09:00
kasan: remove use after scope bugs detection.
2019-03-05 21:07:13 -08:00
kcov: test compiler capability in Kconfig and correct dependency
2018-06-11 09:14:08 +09:00
kbuild: change filechk to surround the given command with { }
2019-01-06 09:46:51 +09:00
Kbuild: Makefile.modbuiltin: include auto.conf and tristate.conf mandatory
2018-08-03 00:47:00 +09:00
kbuild: remove duplicated comments about PHONY
2018-07-06 22:04:03 +09:00
kbuild: rename LDFLAGS to KBUILD_LDFLAGS
2018-08-24 08:22:08 +09:00
kbuild: remove duplicated comments about PHONY
2018-07-06 22:04:03 +09:00
lib/ubsan: remove null-pointer checks
2018-08-10 20:19:58 -07:00
kbuild: simplify command line creation in scripts/mkmakefile
2018-10-04 22:56:02 +09:00
kbuild: rename built-in.o to built-in.a
2018-03-26 02:01:19 +09:00
scripts/recordmcount.{c,pl}: support -ffunction-sections .text.* section names
2018-12-08 20:54:08 -05:00
scripts: Fixed printf format mismatch
2018-05-29 22:04:12 +09:00
scripts/recordmcount.{c,pl}: support -ffunction-sections .text.* section names
2018-12-08 20:54:08 -05:00
scripts/setlocalversion: Improve -dirty check with git-status --no-optional-locks
2018-11-21 23:57:33 +09:00
scripts: add spdxcheck.py self test
2018-12-28 12:11:44 -08:00
scripts/spdxcheck.py: always open files in binary mode
2018-12-14 15:05:45 -08:00
treewide: correct "differenciate" and "instanciate" typos
2018-08-23 18:48:43 -07:00
MAINTAINERS & files: Canonize the e-mails I use at files
2018-05-04 06:21:06 -04:00
selftests: add headers_install to lib.mk
2018-09-05 08:12:09 -06:00
scripts/tags.sh: add more declarations
2018-12-28 12:11:44 -08:00
unifdef: use memcpy instead of strncpy
2018-11-30 14:45:01 -08:00
ver_linux: Do not check for ver_linux pattern in version function
2018-07-07 17:44:52 +02:00
7771bdbbfd