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Nathan Chancellor 4ae191effb kbuild: Fix changing ELF file type for output of gen_btf for big endian 
commit e3a9ee963ad8ba677ca925149812c5932b49af69 upstream.

Commit 90ceddcb4950 ("bpf: Support llvm-objcopy for vmlinux BTF")
changed the ELF type of .btf.vmlinux.bin.o to ET_REL via dd, which works
fine for little endian platforms:

   00000000  7f 45 4c 46 02 01 01 00  00 00 00 00 00 00 00 00  |.ELF............|
  -00000010  03 00 b7 00 01 00 00 00  00 00 00 80 00 80 ff ff  |................|
  +00000010  01 00 b7 00 01 00 00 00  00 00 00 80 00 80 ff ff  |................|

However, for big endian platforms, it changes the wrong byte, resulting
in an invalid ELF file type, which ld.lld rejects:

   00000000  7f 45 4c 46 02 02 01 00  00 00 00 00 00 00 00 00  |.ELF............|
  -00000010  00 03 00 16 00 00 00 01  00 00 00 00 00 10 00 00  |................|
  +00000010  01 03 00 16 00 00 00 01  00 00 00 00 00 10 00 00  |................|

  Type:                              <unknown>: 103

  ld.lld: error: .btf.vmlinux.bin.o: unknown file type

Fix this by updating the entire 16-bit e_type field rather than just a
single byte, so that everything works correctly for all platforms and
linkers.

   00000000  7f 45 4c 46 02 02 01 00  00 00 00 00 00 00 00 00  |.ELF............|
  -00000010  00 03 00 16 00 00 00 01  00 00 00 00 00 10 00 00  |................|
  +00000010  00 01 00 16 00 00 00 01  00 00 00 00 00 10 00 00  |................|

  Type:                              REL (Relocatable file)

While in the area, update the comment to mention that binutils 2.35+
matches LLD's behavior of rejecting an ET_EXEC input, which occurred
after the comment was added.

Cc: stable@vger.kernel.org
Fixes: 90ceddcb4950 ("bpf: Support llvm-objcopy for vmlinux BTF")
Link: https://github.com/llvm/llvm-project/pull/75643
Suggested-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Fangrui Song <maskray@google.com>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Justin Stitt <justinstitt@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
[nathan: Fix silent conflict due to lack of 7d153696e5db in older trees]
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-02-23 08:25:10 +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: dtx_diff: remove broken example from help text
2022-01-27 09:19:55 +01:00
gcc-plugins
randstruct: Fix gcc-plugin performance mode to stay in group
2023-11-28 16:50:17 +00:00
gdb
scripts/gdb: fix lx-timerlist for Python3
2023-05-17 11:35:55 +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 memory leak from range properties
2023-12-13 18:18:10 +01:00
ksymoops
…
mod
modpost: fix tee MODULE_DEVICE_TABLE built on big-endian host
2023-11-20 10:30:14 +01:00
package
kbuild: fix broken builds because of GZIP,BZIP2,LZOP variables
2020-09-03 11:27:10 +02:00
selinux
selinux: use "grep -E" instead of "egrep"
2022-10-26 13:22:21 +02:00
tracing
ftrace/scripts: Update the instructions for ftrace-bisect.sh
2023-02-06 07:52:44 +01:00
.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
ASN.1: Fix check for strdup() success
2023-04-26 11:24:06 +02:00
bin2c.c
kbuild: move bin2c back to scripts/ from scripts/basic/
2018-07-18 01:18:05 +09:00
bloat-o-meter
scripts: switch explicitly to Python 3
2021-05-22 11:38:30 +02:00
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
tweewide: Fix most Shebang lines
2021-05-22 11:38:30 +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
scripts: switch explicitly to Python 3
2021-05-22 11:38:30 +02:00
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_xc3028.pl
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 339
2019-06-05 17:37:07 +02:00
extract-cert.c
cert host tools: Stop complaining about deprecated OpenSSL functions
2022-11-25 17:42:10 +01:00
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
faddr2line
scripts/faddr2line: Fix regression in name resolution on ppc64le
2022-12-08 11:23:02 +01:00
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: Fix 'no symbols' warning when CONFIG_TRIM_UNUSD_KSYMS=y
2021-09-22 12:26:26 +02:00
get_abi.pl
tweewide: Fix most Shebang lines
2021-05-22 11:38:30 +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: remove the target in signal traps when interrupted
2022-10-26 13:22:46 +02:00
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
leaking_addresses: Always print a trailing newline
2021-11-17 09:48:31 +01:00
Lindent
…
link-vmlinux.sh
kbuild: Fix changing ELF file type for output of gen_btf for big endian
2024-02-23 08:25:10 +01:00
Makefile
scripts: set proper OpenSSL include dir also for sign-file
2021-02-26 10:10:27 +01:00
Makefile.asm-generic
kbuild: force all architectures except um to include mandatory-y
2019-03-17 12:56:32 +09:00
Makefile.build
kbuild: Fix objtool dependency for 'OBJECT_FILES_NON_STANDARD_<obj> := n'
2021-07-14 16:53:20 +02:00
Makefile.clean
kbuild: clean up subdir-ymn calculation in Makefile.clean
2019-08-29 23:54:29 +09:00
Makefile.dtbinst
…
Makefile.extrawarn
Makefile.extrawarn: Move -Wcast-function-type-strict to W=1
2022-10-07 09:16:57 +02:00
Makefile.gcc-plugins
gcc-plugins: Undefine LATENT_ENTROPY_PLUGIN when plugin disabled for a file
2022-08-25 11:18:31 +02:00
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
kbuild: Fix include path in scripts/Makefile.modpost
2022-09-05 10:27:45 +02:00
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: mkcompile_h: consider timestamp if KBUILD_BUILD_TIMESTAMP is set
2021-07-25 14:35:12 +02:00
mkmakefile
kbuild: get rid of $(realpath ...) from scripts/mkmakefile
2019-08-29 23:54:29 +09:00
mksysmap
mksysmap: Fix the mismatch of 'L0' symbols in System.map
2022-09-28 11:03:59 +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 memory leaks in the uwrite function
2023-05-30 12:44:04 +01:00
recordmcount.h
recordmcount: Correct st_shndx handling
2021-06-30 08:47:49 -04:00
recordmcount.pl
recordmcount.pl: fix typo in s390 mcount regex
2022-01-05 12:37:44 +01:00
setlocalversion
scripts/setlocalversion: make git describe output more reliable
2020-11-01 12:01:01 +01:00
show_delta
tweewide: Fix most Shebang lines
2021-05-22 11:38:30 +02:00
sign-file.c
sign-file: Fix incorrect return values check
2023-12-20 15:41:17 +01:00
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
tweewide: Fix most Shebang lines
2021-05-22 11:38:30 +02:00
split-man.pl
tweewide: Fix most Shebang lines
2021-05-22 11:38:30 +02:00
stackdelta
…
stackusage
…
subarch.include
selftests: add headers_install to lib.mk
2018-09-05 08:12:09 -06:00
tags.sh
scripts/tags.sh: Resolve gtags empty index generation
2023-07-27 08:37:03 +02:00
tools-support-relr.sh
Makefile: fix GDB warning with CONFIG_RELR
2021-07-14 16:53:12 +02:00
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