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Nathan Chancellor 19532869fe kasan: always respect CONFIG_KASAN_STACK 
Currently, the asan-stack parameter is only passed along if
CFLAGS_KASAN_SHADOW is not empty, which requires KASAN_SHADOW_OFFSET to
be defined in Kconfig so that the value can be checked.  In RISC-V's
case, KASAN_SHADOW_OFFSET is not defined in Kconfig, which means that
asan-stack does not get disabled with clang even when CONFIG_KASAN_STACK
is disabled, resulting in large stack warnings with allmodconfig:

  drivers/video/fbdev/omap2/omapfb/displays/panel-lgphilips-lb035q02.c:117:12: error: stack frame size (14400) exceeds limit (2048) in function 'lb035q02_connect' [-Werror,-Wframe-larger-than]
  static int lb035q02_connect(struct omap_dss_device *dssdev)
             ^
  1 error generated.

Ensure that the value of CONFIG_KASAN_STACK is always passed along to
the compiler so that these warnings do not happen when
CONFIG_KASAN_STACK is disabled.

Link: https://github.com/ClangBuiltLinux/linux/issues/1453
References: 6baec880d7 ("kasan: turn off asan-stack for clang-8 and earlier")
Link: https://lkml.kernel.org/r/20210922205525.570068-1-nathan@kernel.org
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Marco Elver <elver@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-24 16:13:35 -07:00
..
atomic locking/atomic: add arch_atomic_long*() 2021-07-16 18:46:45 +02:00
basic .gitignore: prefix local generated files with a slash 2021-05-02 00:43:35 +09:00
clang-tools gen_compile_commands: fix missing 'sys' package 2021-09-19 10:13:03 +09:00
coccinelle scripts: coccinelle: allow list_entry_is_head() to use pos 2021-08-08 22:00:49 +02:00
dtc .gitignore: prefix local generated files with a slash 2021-05-02 00:43:35 +09:00
dummy-tools kbuild: dummy-tools: adjust to stricter stackprotector check 2021-05-17 12:10:03 +09:00
gcc-plugins scripts: make some scripts executable 2021-08-10 09:13:25 +09:00
gdb scripts/gdb: add lx_current support for arm64 2021-05-07 00:26:33 -07:00
genksyms .gitignore: prefix local generated files with a slash 2021-05-02 00:43:35 +09:00
kconfig scripts: merge_config: add strict mode to fail upon any redefinition 2021-08-10 08:23:39 +09:00
ksymoops
mod Kbuild updates for v5.15 2021-09-03 15:33:47 -07:00
package kbuild: buildtar: add riscv support 2021-03-29 23:13:30 -07:00
selinux
tracing scripts/tracing: fix the bug that can't parse raw_trace_func 2021-08-04 17:49:26 -04:00
.gitignore .gitignore: prefix local generated files with a slash 2021-05-02 00:43:35 +09:00
adjust_autoksyms.sh kbuild: redo fake deps at include/ksym/*.h 2021-09-03 08:17:21 +09:00
as-version.sh kbuild: Switch to 'f' variants of integrated assembler flag 2021-09-03 08:17:20 +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
bpf_doc.py bpf: Introduce bpf timers. 2021-07-15 22:31:10 +02:00
cc-can-link.sh
cc-version.sh kbuild: collect minimum tool versions into scripts/min-tool-version.sh 2021-04-25 05:14:26 +09:00
check_extable.sh scripts: check_extable: fix typo in user error message 2021-09-08 11:50:28 -07:00
check-sysctl-docs
checkdeclares.pl scripts: make some scripts executable 2021-08-10 09:13:25 +09:00
checkincludes.pl
checkkconfigsymbols.py checkkconfigsymbols.py: Remove skipping of help lines in parse_kconfig_file 2021-09-19 10:13:03 +09:00
checkpatch.pl checkpatch: improve GIT_COMMIT_ID test 2021-09-08 11:50:27 -07:00
checkstack.pl
checksyscalls.sh don't make the syscall checking produce errors from warnings 2021-09-06 09:15:09 -07:00
checkversion.pl scripts: checkversion: modernize linux/version.h search strings 2021-08-05 20:55:39 +09:00
cleanfile
cleanpatch
coccicheck scripts: coccicheck: fix troubles on non-English builds 2021-05-18 11:09:59 +02:00
config kconfig: config script: add a little user help 2021-01-04 10:38:11 +09:00
const_structs.checkpatch
decode_stacktrace.sh scripts/decode_stacktrace.sh: indicate 'auto' can be used for base path 2021-07-08 11:48:22 -07:00
decodecode
depmod.sh depmod: handle the case of /sbin/depmod without /sbin in PATH 2021-01-01 12:26:39 -08:00
dev-needs.sh
diffconfig scripts: switch explicitly to Python 3 2021-01-22 06:34:44 +09:00
documentation-file-ref-check documentation-file-ref-check: Make git check work for multiple working directories 2021-06-04 11:20:52 -06:00
export_report.pl
extract_xc3028.pl
extract-cert.c
extract-ikconfig
extract-module-sig.pl
extract-sys-certs.pl
extract-vmlinux
faddr2line
file-size.sh
find-unused-docs.sh
gcc-goto.sh
gcc-ld
gcc-x86_32-has-stack-protector.sh x86/stackprotector/32: Make the canary into a regular percpu variable 2021-03-08 13:19:05 +01:00
gcc-x86_64-has-stack-protector.sh
gen_autoksyms.sh kbuild: Fix TRIM_UNUSED_KSYMS with LTO_CLANG 2021-09-03 08:12:39 +09:00
gen_ksymdeps.sh kbuild: redo fake deps at include/ksym/*.h 2021-09-03 08:17:21 +09:00
generate_initcall_order.pl init: lto: ensure initcall ordering 2021-01-14 08:21:09 -08:00
get_abi.pl scripts: get_abi: ignore code blocks for cross-references 2021-03-31 13:53:16 -06:00
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
gfp-translate
headerdep.pl
headers_check.pl
headers_install.sh
insert-sys-cert.c
jobserver-exec scripts/jobserver-exec: Fix a typo ("envirnoment") 2021-05-17 12:10:03 +09:00
kallsyms.c kallsyms: fix nonconverging kallsyms table with lld 2021-02-05 17:53:28 +09:00
Kbuild.include kbuild: warn if FORCE is missing for if_changed(_dep,_rule) and filechk 2021-09-03 08:17:19 +09:00
Kconfig.include kbuild: check the minimum assembler version in Kconfig 2021-04-25 05:14:41 +09:00
kernel-doc scripts/kernel-doc: Override -Werror from KCFLAGS with KDOC_WERROR 2021-08-12 08:58:13 -06:00
ld-version.sh kbuild: collect minimum tool versions into scripts/min-tool-version.sh 2021-04-25 05:14:26 +09:00
leaking_addresses.pl
Lindent
link-vmlinux.sh kbuild: merge vmlinux_link() between ARCH=um and other architectures 2021-09-03 08:17:21 +09:00
Makefile Fix CVE-2020-26541 2021-04-26 08:38:10 -07:00
Makefile.asm-generic kbuild: prefix $(srctree)/ to some included Makefiles 2021-03-15 19:20:48 +09:00
Makefile.build kbuild: remove stale *.symversions 2021-09-03 08:17:20 +09:00
Makefile.clang kbuild: Add -Werror=ignored-optimization-argument to CLANG_FLAGS 2021-09-19 10:55:18 +09:00
Makefile.clean kbuild: prefix $(srctree)/ to some included Makefiles 2021-03-15 19:20:48 +09:00
Makefile.compiler kbuild: remove TMPO from try-run 2021-04-25 05:25:56 +09:00
Makefile.dtbinst kbuild: prefix $(srctree)/ to some included Makefiles 2021-03-15 19:20:48 +09:00
Makefile.extrawarn Makefile.extrawarn: remove -Wnested-externs warning 2020-12-08 23:30:05 +09:00
Makefile.gcc-plugins
Makefile.headersinst kbuild: prefix $(srctree)/ to some included Makefiles 2021-03-15 19:20:48 +09:00
Makefile.host
Makefile.kasan kasan: always respect CONFIG_KASAN_STACK 2021-09-24 16:13:35 -07:00
Makefile.kcov
Makefile.kcsan Kbuild updates for v5.10 2020-10-22 13:13:57 -07:00
Makefile.lib Kbuild updates for v5.15 2021-09-03 15:33:47 -07:00
Makefile.modfinal kbuild: Fix TRIM_UNUSED_KSYMS with LTO_CLANG 2021-09-03 08:12:39 +09:00
Makefile.modinst kbuild: add support for zstd compressed modules 2021-04-25 05:25:06 +09:00
Makefile.modpost kbuild: Fix comment typo in scripts/Makefile.modpost 2021-09-19 10:14:19 +09:00
Makefile.package kbuild: deb-pkg: change the source package name to linux-upstream 2021-04-25 05:30:45 +09:00
Makefile.ubsan ubsan: remove overflow checks 2021-02-26 09:41:05 -08:00
Makefile.userprogs
makelst
markup_oops.pl
min-tool-version.sh Documentation: raise minimum supported version of GCC to 5.1 2021-09-13 10:18:28 -07:00
mkcompile_h kbuild: mkcompile_h: consider timestamp if KBUILD_BUILD_TIMESTAMP is set 2021-06-17 10:01:12 +09:00
mksysmap
mkuboot.sh
module.lds.S module: combine constructors in module linker script 2021-07-19 14:51:40 +02:00
modules-check.sh kbuild: check module name conflict for external modules as well 2021-04-25 05:22:42 +09:00
nsdeps kbuild: replace LANG=C with LC_ALL=C 2021-05-02 00:43:35 +09:00
objdiff
parse-maintainers.pl
patch-kernel
profile2linkerlist.pl
prune-kernel
recordmcount.c ftrace: Have recordmcount use w8 to read relp->r_info in arm64_is_fake_mcount 2021-03-02 17:27:18 -05:00
recordmcount.h recordmcount: Correct st_shndx handling 2021-06-18 09:09:17 -04:00
recordmcount.pl scripts/recordmcount.pl: Remove check_objcopy() and $can_use_local 2021-08-04 17:49:26 -04:00
remove-stale-files kbuild: add a script to remove stale generated files 2021-05-02 00:43:35 +09:00
setlocalversion scripts/setlocalversion: fix a bug when LOCALVERSION is empty 2021-07-18 23:48:14 +09:00
show_delta tweewide: Fix most Shebang lines 2020-12-08 23:30:04 +09:00
sign-file.c
sorttable.c scripts/sorttable: riscv: fix undeclared identifier 'EM_RISCV' error 2021-09-24 16:13:35 -07:00
sorttable.h
spdxcheck-test.sh scripts/spdxcheck-test.sh: Drop python2 2021-07-21 15:59:32 +02:00
spdxcheck.py scripts/spdxcheck.py: Strictly read license files in utf-8 2021-07-12 09:56:50 -06:00
spelling.txt scripts/spelling.txt: add more spellings to spelling.txt 2021-06-29 10:53:45 -07:00
sphinx-pre-install scripts: sphinx-pre-install: fix the need of virtenv packages 2021-06-01 16:29:30 -06:00
split-man.pl tweewide: Fix most Shebang lines 2020-12-08 23:30:04 +09:00
stackdelta
stackusage
subarch.include parisc: Fix compile failure when building 64-bit kernel natively 2021-09-01 21:52:02 +02:00
syscallhdr.sh scripts: check duplicated syscall number in syscall table 2021-07-09 04:00:39 +09:00
syscallnr.sh scripts: make some scripts executable 2021-08-10 09:13:25 +09:00
syscalltbl.sh scripts: check duplicated syscall number in syscall table 2021-07-09 04:00:39 +09:00
tags.sh kbuild: replace LANG=C with LC_ALL=C 2021-05-02 00:43:35 +09:00
tools-support-relr.sh Makefile: fix GDB warning with CONFIG_RELR 2021-06-08 13:09:34 +01:00
unifdef.c
ver_linux Removed the oprofiled version option 2021-05-03 17:23:06 -06:00
xen-hypercalls.sh scripts: make some scripts executable 2021-08-10 09:13:25 +09:00
xz_wrap.sh