OpenCloudOS-Kernel/scripts
Josh Poimboeuf fb799447ae x86,objtool: Split UNWIND_HINT_EMPTY in two
Mark reported that the ORC unwinder incorrectly marks an unwind as
reliable when the unwind terminates prematurely in the dark corners of
return_to_handler() due to lack of information about the next frame.

The problem is UNWIND_HINT_EMPTY is used in two different situations:

  1) The end of the kernel stack unwind before hitting user entry, boot
     code, or fork entry

  2) A blind spot in ORC coverage where the unwinder has to bail due to
     lack of information about the next frame

The ORC unwinder has no way to tell the difference between the two.
When it encounters an undefined stack state with 'end=1', it blindly
marks the stack reliable, which can break the livepatch consistency
model.

Fix it by splitting UNWIND_HINT_EMPTY into UNWIND_HINT_UNDEFINED and
UNWIND_HINT_END_OF_STACK.

Reported-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/fd6212c8b450d3564b855e1cb48404d6277b4d9f.1677683419.git.jpoimboe@kernel.org
2023-03-23 23:18:58 +01:00
..
atomic Fix up more non-executable files marked executable 2023-01-28 11:17:57 -08:00
basic fixdep: do not parse *.rlib, *.rmeta, *.so 2023-01-22 23:43:33 +09:00
clang-tools scripts: handle BrokenPipeError for python scripts 2023-01-26 12:43:33 +09:00
coccinelle coccinelle: api/atomic_as_refcounter: include message type in output 2022-12-26 21:47:12 +01:00
dtc of: add processing of EXPECT_NOT to of_unittest_expect 2023-02-17 15:46:20 -06:00
dummy-tools kbuild: dummy-tools: pretend we understand __LONG_DOUBLE_128__ 2022-08-21 02:47:48 +09:00
gcc-plugins Merge branch 'for-linus/hardening' into for-next/hardening 2023-02-02 18:43:28 +00:00
gdb There is no particular theme here - mainly quick hits all over the tree. 2023-02-23 17:55:40 -08:00
genksyms genksyms: adjust the output format to modpost 2022-05-24 16:33:20 +09:00
kconfig ARM: defconfigs for 6.3 2023-02-20 15:43:36 -08:00
ksymoops
mod Kbuild updates for v6.2 2022-12-19 12:33:32 -06:00
package kbuild: rpm-pkg: remove unneeded KERNELRELEASE from modules/headers_install 2023-02-26 16:54:12 +09:00
selinux selinux: remove runtime disable message in the install_policy.sh script 2022-09-20 14:12:25 -04:00
tracing tracing: Always use canonical ftrace path 2023-02-18 14:34:09 -05:00
.gitignore kbuild: add a tool to list files ignored by git 2023-02-16 17:00:41 +09:00
Kbuild.include kbuild: replace $(dot-target).tmp in filechk with $(tmp-target) 2023-01-22 23:43:33 +09:00
Kconfig.include kbuild: Update assembler calls to use proper flags and language target 2023-01-26 12:41:38 +09:00
Lindent
Makefile kbuild: add a tool to list files ignored by git 2023-02-16 17:00:41 +09:00
Makefile.asm-generic kbuild: add kbuild-file macro 2022-11-22 23:40:02 +09:00
Makefile.build kbuild: remove sed commands after rustc rules 2023-01-22 23:43:33 +09:00
Makefile.clang kbuild: Turn a couple more of clang's unused option warnings into errors 2023-01-26 12:43:19 +09:00
Makefile.clean kbuild: add kbuild-file macro 2022-11-22 23:40:02 +09:00
Makefile.compiler kbuild: Update assembler calls to use proper flags and language target 2023-01-26 12:41:38 +09:00
Makefile.debug Makefile.debug: support for -gz=zstd 2022-11-21 10:18:39 +09:00
Makefile.defconf kbuild: Provide a version of merge_into_defconfig without override warnings 2023-02-13 20:18:28 +01:00
Makefile.dtbinst kbuild: add kbuild-file macro 2022-11-22 23:40:02 +09:00
Makefile.extrawarn kbuild: add -Wundef to KBUILD_CPPFLAGS for W=1 builds 2022-12-11 17:28:32 +09:00
Makefile.gcc-plugins gcc-plugins: Undefine LATENT_ENTROPY_PLUGIN when plugin disabled for a file 2022-08-16 12:25:53 -07:00
Makefile.headersinst kbuild: prefix $(srctree)/ to some included Makefiles 2021-03-15 19:20:48 +09:00
Makefile.host kbuild: remove sed commands after rustc rules 2023-01-22 23:43:33 +09:00
Makefile.kasan kasan: treat meminstrinsic as builtins in uninstrumented files 2023-03-02 21:54:22 -08:00
Makefile.kcov kbuild: include scripts/Makefile.* only when relevant CONFIG is enabled 2020-08-10 01:32:59 +09:00
Makefile.kcsan kcsan: Ignore GCC 11+ warnings about TSan runtime support 2021-12-09 16:42:27 -08:00
Makefile.kmsan kmsan: add KMSAN runtime core 2022-10-03 14:03:19 -07:00
Makefile.lib kbuild: unify cmd_dt_S_dtb and cmd_dt_S_dtbo 2023-01-22 23:43:33 +09:00
Makefile.modfinal kbuild: rename cmd_$@ to savedcmd_$@ in *.cmd files 2023-01-22 23:43:33 +09:00
Makefile.modinst modules-6.3-rc1 2023-02-23 14:05:08 -08:00
Makefile.modpost kbuild: do not automatically add -w option to modpost 2023-02-05 18:51:22 +09:00
Makefile.package kbuild: tar-pkg: use tar rules in scripts/Makefile.package 2023-02-26 15:23:30 +09:00
Makefile.randstruct randstruct: Enable Clang support 2022-05-08 01:33:07 -07:00
Makefile.ubsan ubsan: remove CONFIG_UBSAN_OBJECT_SIZE 2022-01-20 08:52:55 +02:00
Makefile.userprogs kbuild: add infrastructure to build userspace programs 2020-05-17 18:52:01 +09:00
Makefile.vmlinux kbuild: Fix CFI hash randomization with KASAN 2023-01-13 15:22:03 -08:00
Makefile.vmlinux_o kbuild: move modules.builtin(.modinfo) rules to Makefile.vmlinux_o 2022-10-03 03:52:58 +09:00
adjust_autoksyms.sh kbuild: split the second line of *.mod into *.usyms 2022-05-08 03:16:59 +09:00
as-version.sh kbuild: Update assembler calls to use proper flags and language target 2023-01-26 12:41:38 +09:00
asn1_compiler.c kbuild: do not print extra logs for V=2 2023-01-22 23:43:32 +09:00
bloat-o-meter scripts/bloat-o-meter: use the reverse flag for sort 2023-02-02 22:50:03 -08:00
bootgraph.pl
bpf_doc.py bpf_doc: Fix build error with older python versions 2023-01-11 16:56:26 -08:00
cc-can-link.sh
cc-version.sh Remove Intel compiler support 2023-03-05 10:49:37 -08:00
check-local-export kbuild: rewrite check-local-export in sh/awk 2022-09-29 04:40:15 +09:00
check-sysctl-docs docs: add a script to check sysctl docs 2020-02-25 03:35:16 -07:00
check_extable.sh scripts: check_extable: fix typo in user error message 2021-09-08 11:50:28 -07:00
checkdeclares.pl scripts: make some scripts executable 2021-08-10 09:13:25 +09:00
checkincludes.pl
checkkconfigsymbols.py scripts: handle BrokenPipeError for python scripts 2023-01-26 12:43:33 +09:00
checkpatch.pl checkpatch: improve EMBEDDED_FILENAME test 2023-02-02 22:50:07 -08:00
checkstack.pl checkstack: add riscv support for scripts/checkstack.pl 2022-07-27 21:18:00 +09:00
checksyscalls.sh checksyscalls: ignore -Wunused-macros 2022-05-08 03:16:59 +09:00
checkversion.pl scripts: checkversion: modernize linux/version.h search strings 2021-08-05 20:55:39 +09:00
cleanfile
cleanpatch
coccicheck scripts: coccicheck: Use /usr/bin/env 2023-02-25 20:11:06 +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.pl: add kobj_type 2023-02-08 13:33:29 +01:00
decode_stacktrace.sh scripts: decode_stacktrace: demangle Rust symbols 2022-09-28 09:01:40 +02:00
decodecode scripts/decodecode: Add support for RISC-V 2023-02-21 16:53:54 -08:00
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: handle BrokenPipeError for python scripts 2023-01-26 12:43:33 +09:00
documentation-file-ref-check scripts: documentation-file-ref-check: fix bpf selftests path 2021-10-26 09:42:29 -06:00
export_report.pl modpost: move the namespace field in Module.symvers last 2020-03-17 08:59:03 +09:00
extract-ikconfig scripts/extract-ikconfig: add zstd compression support 2022-08-29 13:58:47 +09:00
extract-module-sig.pl
extract-sys-certs.pl
extract-vmlinux
extract_xc3028.pl
faddr2line scripts/faddr2line: Fix regression in name resolution on ppc64le 2022-11-16 10:42:10 +01:00
file-size.sh
find-unused-docs.sh
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-randstruct-seed.sh randstruct: Move seed generation into scripts/basic/ 2022-05-08 01:33:07 -07:00
gen_autoksyms.sh kbuild: change module.order to list *.o instead of *.ko 2022-12-14 15:42:40 +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
generate_rust_analyzer.py rust: add `build_error` crate 2022-12-04 01:59:16 +01:00
generate_rust_target.rs x86: enable initial Rust support 2022-09-28 09:02:45 +02:00
get_abi.pl scripts/get_abi: Fix wrong script file name in the help message 2022-04-24 10:38:44 +02:00
get_dvb_firmware
get_feat.pl scripts: get_feat.pl: use /usr/bin/env to find perl 2022-06-30 12:22:17 -06:00
get_maintainer.pl get_maintainer: Honor mailmap for in file emails 2022-04-29 14:38:00 -07:00
gfp-translate
head-object-list.txt scripts/head-object-list: Remove x86 from the list 2023-01-09 18:22:21 +01:00
headerdep.pl
headers_install.sh scripts: headers_install.sh: Update config leak ignore entries 2022-07-27 21:18:00 +09:00
insert-sys-cert.c
install.sh kbuild: factor out the common installation code into scripts/install.sh 2022-05-11 21:45:53 +09:00
is_rust_module.sh scripts: add `is_rust_module.sh` 2022-09-28 09:02:06 +02:00
jobserver-exec scripts: support GNU make 4.4 in jobserver-exec 2023-01-16 20:15:20 +09:00
kallsyms.c Char/Misc driver changes for 6.2-rc1 2022-12-16 03:49:24 -08:00
kernel-doc Kbuild updates for v6.3 2023-02-26 11:53:25 -08:00
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 leaking_addresses: Always print a trailing newline 2021-10-15 11:25:13 +02:00
link-vmlinux.sh kallsyms: Correctly sequence symbols when CONFIG_LTO_CLANG=y 2022-11-12 18:47:36 -08:00
list-gitignored.c kbuild: add a tool to list files ignored by git 2023-02-16 17:00:41 +09:00
makelst
markup_oops.pl
min-tool-version.sh Remove Intel compiler support 2023-03-05 10:49:37 -08:00
misc-check kbuild: make W=1 warn files that are tracked but ignored by git 2023-01-22 23:43:33 +09:00
mkcompile_h Revert "kbuild: Make scripts/compile.h when sh != bash" 2022-09-29 04:40:15 +09:00
mksysmap kallsyms: ignore __kstrtab_* and __kstrtabns_* symbols 2022-10-03 03:51:58 +09:00
mkuboot.sh
module.lds.S arm64: unwind: add asynchronous unwind tables to kernel and modules 2022-11-09 18:06:35 +00:00
modules-check.sh kbuild: change module.order to list *.o instead of *.ko 2022-12-14 15:42:40 +09:00
nsdeps scripts/nsdeps: adjust to the format change of *.mod files 2022-06-08 20:14:13 +09:00
objdiff kbuild: clean .tmp_* pattern by make clean 2022-06-05 06:20:57 +09:00
objdump-func scripts: Create objdump-func helper script 2022-05-12 10:08:43 -07:00
pahole-flags.sh btf, scripts: Exclude Rust CUs with pahole 2023-01-17 17:29:42 +01:00
pahole-version.sh kbuild: Add CONFIG_PAHOLE_VERSION 2022-02-02 11:19:33 +01:00
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 scripts/prune-kernel: Use kernel-install if available 2022-05-11 21:46:38 +09:00
recordmcount.c LoongArch/ftrace: Add recordmcount support 2022-12-14 08:41:53 +08:00
recordmcount.h recordmcount: Correct st_shndx handling 2021-06-18 09:09:17 -04:00
recordmcount.pl nds32: Remove the architecture 2022-03-07 13:54:59 +01:00
remove-stale-files kbuild: do not put .scmversion into the source tarball 2023-01-30 13:00:30 +09:00
rust_is_available.sh scripts: add `rust_is_available.sh` 2022-09-28 09:02:06 +02:00
rust_is_available_bindgen_libclang.h scripts: add `rust_is_available.sh` 2022-09-28 09:02:06 +02:00
setlocalversion setlocalversion: use only the correct release tag for git-describe 2023-02-15 02:56:27 +09:00
show_delta tweewide: Fix most Shebang lines 2020-12-08 23:30:04 +09:00
sign-file.c sign-file: Fix confusing error messages 2022-08-03 23:56:20 +03:00
sorttable.c LoongArch: extable: Add `type` and `data` fields 2022-12-14 08:36:11 +08:00
sorttable.h x86,objtool: Split UNWIND_HINT_EMPTY in two 2023-03-23 23:18:58 +01:00
spdxcheck-test.sh docs: move Linux logo into a new `images` folder 2022-06-01 09:32:45 -06:00
spdxcheck.py scripts/spdxcheck: Put excluded files and directories into a separate file 2022-05-18 15:34:33 +02:00
spdxexclude scripts/spdxcheck: Exclude top-level README 2022-05-18 15:35:42 +02:00
spelling.txt scripts/spelling.txt: add "exsits" pattern and fix typo instances 2023-02-02 22:50:07 -08:00
sphinx-pre-install docs: sphinx-pre-install: don't require the RTD theme 2022-10-13 11:14:43 -06:00
split-man.pl tweewide: Fix most Shebang lines 2020-12-08 23:30:04 +09:00
stackdelta
stackusage
subarch.include LoongArch: Add build infrastructure 2022-06-03 20:09:27 +08:00
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 updates for v6.3 2023-02-26 11:53:25 -08:00
test_fortify.sh fortify: Update compile-time tests for Clang 14 2022-02-13 16:50:06 -08:00
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 kbuild: add variables for compression tools 2020-06-06 23:42:01 +09:00