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2022-08-04Revert "Kbuild, lto, workaround: Don't warn for initcall_reference in modpost"Masahiro Yamada1-3/+0
This reverts commit 77ab21adae509c5540956729e2d03bc1a59bc82a. Even after 8 years later, GCC LTO has not been upstreamed. Also, it said "This is a workaround". If this is needed in the future, it should be added in a proper way. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Acked-by: Jiri Slaby <jirislaby@kernel.org>
2022-08-03modpost: use more reliable way to get fromsec in section_rel(a)()Masahiro Yamada1-4/+2
The section name of Rel and Rela starts with ".rel" and ".rela" respectively (but, I do not know whether this is specification or convention). For example, ".rela.text" holds relocation entries applied to the ".text" section. So, the code chops the ".rel" or ".rela" prefix to get the name of the section to which the relocation applies. However, I do not like to skip 4 or 5 bytes blindly because it is potential memory overrun. The ELF specification provides a more reliable way to do this. - The sh_info field holds extra information, whose interpretation depends on the section type - If the section type is SHT_REL or SHT_RELA, the sh_info field holds the section header index of the section to which the relocation applies. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-08-03modpost: add array range check to sec_name()Masahiro Yamada1-1/+9
The section index is always positive, so the argument, secindex, should be unsigned. Also, inserted the array range check. If sym->st_shndx is a special section index (between SHN_LORESERVE and SHN_HIRESERVE), there is no corresponding section header. For example, if a symbol specifies an absolute value, sym->st_shndx is SHN_ABS (=0xfff1). The current users do not cause the out-of-range access of info->sechddrs[], but it is better to avoid such a pitfall. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-08-03modpost: refactor get_secindex()Masahiro Yamada1-12/+18
SPECIAL() is only used in get_secindex(). Squash it. Make the code more readable with more comments. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-08-03kbuild: set EXIT trap before creating temporary directoryMasahiro Yamada2-2/+2
Swap the order of 'mkdir' and 'trap' just in case the subshell is interrupted between 'mkdir' and 'trap' although the effect might be subtle. This does not intend to make the cleanup perfect. There are more cases that miss to remove the tmp directory, for example: - When interrupted, dash does not invoke the EXIT trap (bash does) - 'rm' command might be interrupted before removing the directory I am not addressing all the cases since the tmp directory is harmless after all. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-08-03modpost: remove unused Elf_Sword macroMasahiro Yamada1-2/+0
Commit 9ad21c3f3ecf ("kbuild: try harder to find symbol names in modpost") added Elf_Sword (in a wrong way), but did not use it at all. BTW, the current code looks weird. The fix for the 32-bit part would be: Elf64_Sword --> Elf32_Sword (inconsistet prefix, Elf32_ vs Elf64_) The fix for the 64-bit part would be: Elf64_Sxword --> Elf64_Sword (the size is different between Sword and Sxword) Note: Elf32_Sword == Elf64_Sword == int32_t Elf32_Sxword == Elf64_Sxword == int64_t Anyway, let's drop unused code instead of fixing it. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-08-03Makefile.extrawarn: re-enable -Wformat for clangJustin Stitt1-1/+0
There's been an ongoing mission to re-enable the -Wformat warning for Clang. A previous attempt at enabling the warning showed that there were many instances of this warning throughout the codebase. The sheer amount of these warnings really polluted builds and thus -Wno-format was added to _temporarily_ toggle them off. After many patches the warning has largely been eradicated for x86, x86_64, arm, and arm64 on a variety of configs. The time to enable the warning has never been better as it seems for the first time we are ahead of them and can now solve them as they appear rather than tackling from a backlog. As to the root cause of this large backlog of warnings, Clang seems to pickup on some more nuanced cases of format warnings caused by implicit integer conversion as well as default argument promotions from printf-like functions. Link: https://github.com/ClangBuiltLinux/linux/issues/378 Suggested-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Justin Stitt <justinstitt@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-07-27kconfig: Qt5: tell the user which packages are requiredRandy Dunlap1-0/+1
Along with saying "Please install Qt5 ...", tell exactly which parts of Qt5 are needed. This is useful when parts of Qt5 are installed but some of the required pieces are missing, and it eliminates the need for the user to find the shell script and the line in it that provide that information. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-07-27modpost: use sym_get_data() to get module device_table dataMasahiro Yamada3-4/+3
Use sym_get_data() to replace the long code. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-07-27modpost: drop executable ELF supportMasahiro Yamada1-6/+4
Since commit 269a535ca931 ("modpost: generate vmlinux.symvers and reuse it for the second modpost"), modpost only parses relocatable files (ET_REL). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-07-27checkstack: add riscv support for scripts/checkstack.plWadim Mueller1-0/+4
scripts/checkstack.pl lacks support for the riscv architecture. Add support to detect "addi sp,sp,-FRAME_SIZE" stack frame generation instruction Signed-off-by: Wadim Mueller <wafgo01@gmail.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-07-27kconfig: shorten the temporary directory name for cc-optionMasahiro Yamada1-1/+1
The cc-option macro creates the temporary directory, .tmp_$$$$. Shell expands '$$' into its process ID. '$$$$' results in repeated PID. In Makefile, '$$$$' is correct (see TMPOUT in scripts/Malefile.compiler) because '$$' is an escape sequence of '$'. Make expands '$$$$' into '$$', then shell expands it into the process ID. This does not apply to Kconfig because Kconfig requires variable references to be enclosed by curly braces, like ${variable}. The '$' that is not followed by '{' loses its effect. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Nicolas Schier <nicolas@fjasle.eu>
2022-07-27scripts: headers_install.sh: Update config leak ignore entriesNicolas Schier1-2/+0
Remove two dated config leak ignore entries from scripts/headers_install.sh: arch/alpha/include/uapi/asm/setup.h does no more leak any CONFIG_* symbol to user-space any more since commit 3cb8b1537f8a ("alpha: Move setup.h out of uapi"). Same holds for include/uapi/asm-generic/fcntl.h since commit 306f7cc1e906 ("uapi: always define F_GETLK64/F_SETLK64/F_SETLKW64 in fcntl.h"). Signed-off-by: Nicolas Schier <nicolas@fjasle.eu> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-07-27kbuild: error out if $(INSTALL_MOD_PATH) contains % or :Masahiro Yamada1-0/+3
If the directory path given to INSTALL_MOD_PATH contains % or :, the module_install fails. % is used in pattern rules, and : as the separator of dependencies. Bail out with a clearer error message. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <n.schier@avm.de>
2022-07-27kbuild: rpm-pkg: pass 'linux' to --target option of rpmbuildMasahiro Yamada1-2/+2
Presumably, _target_os is defined even if the --target flag does not specify it, but it is better to make it explicit. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-07-27kbuild: rpm-pkg: fix build error when _arch is undefinedMasahiro Yamada1-0/+3
Cross-building (bin)rpm-pkg fails on several architectures. For example, 'make ARCH=arm binrpm-pkg' fails like follows: sh ./scripts/package/mkspec prebuilt > ./binkernel.spec rpmbuild --define "_builddir ." --target \ arm -bb ./binkernel.spec Building target platforms: arm Building for target arm warning: line 19: It's not recommended to have unversioned Obsoletes: Obsoletes: kernel-headers Executing(%install): /bin/sh -e /var/tmp/rpm-tmp.0S8t2F + umask 022 + cd . + mkdir -p /home/masahiro/rpmbuild/BUILDROOT/kernel-5.19.0_rc6-19.%{_arch}/boot + make -f ./Makefile image_name + cp arch/arm/boot/zImage /home/masahiro/rpmbuild/BUILDROOT/kernel-5.19.0_rc6-19.%{_arch}/boot/vmlinuz-5.19.0-rc6 + make -f ./Makefile INSTALL_MOD_PATH=/home/masahiro/rpmbuild/BUILDROOT/kernel-5.19.0_rc6-19.%{_arch} modules_install make[3]: *** No rule to make target '/home/masahiro/rpmbuild/BUILDROOT/kernel-5.19.0_rc6-19.arch/arm/crypto/aes-arm-bs.ko{_arch}/lib/modules/5.19.0-rc6/kernel/%', needed by '__modinst'. Stop. make[2]: *** [Makefile:1768: modules_install] Error 2 error: Bad exit status from /var/tmp/rpm-tmp.0S8t2F (%install) By default, 'buildroot' contains %{_arch} (see /usr/lib/rpm/macros). _arch is generally defined in /usr/lib/rpm/platforms/*/macros, where the platform sub-directory is specified by --target= option for cross builds. If the given arch does not exist, %{_arch} is not expanded. In the example above, --target=arm is passed to rpmbuild, but /usr/lib/rpm/platforms/arm-linux/ does not exist. The '%' character in the path confuses GNU make and rpmbuild. The same occurs for such architectures as csky, microblaze, nios2, etc. Define _arch if it has not been defined. Reported-by: Jason Self <jason@bluehome.net> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-07-27kbuild: dummy-tools: avoid tmpdir leak in dummy gccOndrej Mosnacek2-6/+2
When passed -print-file-name=plugin, the dummy gcc script creates a temporary directory that is never cleaned up. To avoid cluttering $TMPDIR, instead use a static directory included in the source tree. Fixes: 76426e238834 ("kbuild: add dummy toolchains to enable all cc-option etc. in Kconfig") Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-07-27Revert "scripts/mod/modpost.c: permit '.cranges' secton for sh64 architecture."Masahiro Yamada1-1/+0
This reverts commit 4d10c223baab8be8f717df3625cfece5be26dead. Commit 37744feebc08 ("sh: remove sh5 support") removed the sh64 support entirely. Note: .cranges was only used for sh64 ever. Commit 211dc24b8744 ("Remove sh5 and sh64 support") in binutils-gdb already removed the relevant code. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-07-27kbuild: remove sed command from cmd_ar_builtinMasahiro Yamada1-3/+2
Replace a pipeline of echo and sed with printf to decrease process forks. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-07-27certs: move scripts/check-blacklist-hashes.awk to certs/Masahiro Yamada1-37/+0
This script is only used in certs/Makefile, so certs/ is a better home for it. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Mickaël Salaün <mic@linux.microsoft.com> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
2022-07-10kbuild: remove unused cmd_none in scripts/Makefile.modinstMasahiro Yamada1-3/+0
Commit 65ce9c38326e ("kbuild: move module strip/compression code into scripts/Makefile.modinst") added this unused code. Perhaps, I thought cmd_none was useful for CONFIG_MODULE_COMPRESS_NONE, but I did not use it after all. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-06-29gen_compile_commands: handle multiple lines per .mod fileJohn Hubbard1-3/+3
scripts/clang-tools/gen_compile_commands.py incorrectly assumes that each .mod file only contains one line. That assumption was correct when the script was originally created, but commit 9413e7640564 ("kbuild: split the second line of *.mod into *.usyms") changed the .mod file format so that there is one entry per line, and potentially many lines. The problem can be reproduced by using Kbuild to generate compile_commands.json, like this: make CC=clang compile_commands.json In many cases, the problem might be overlooked because many subsystems only have one line anyway. However, in some subsystems (Nouveau, with 762 entries, is a notable example) it results in skipping most of the subsystem. Fix this by fully processing each .mod file. Fixes: 9413e7640564 ("kbuild: split the second line of *.mod into *.usyms") Signed-off-by: John Hubbard <jhubbard@nvidia.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-06-26kbuild: Ignore __this_module in gen_autoksyms.shSami Tolvanen1-0/+3
Module object files can contain an undefined reference to __this_module, which isn't resolved until we link the final .ko. The kernel doesn't export this symbol, so ignore it in gen_autoksyms.sh. Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Tested-by: Steve Muckle <smuckle@google.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Tested-by: Ramji Jiyani <ramjiyani@google.com>
2022-06-20modpost: fix section mismatch check for exported init/exit sectionsMasahiro Yamada1-1/+1
Since commit f02e8a6596b7 ("module: Sort exported symbols"), EXPORT_SYMBOL* is placed in the individual section ___ksymtab(_gpl)+<sym> (3 leading underscores instead of 2). Since then, modpost cannot detect the bad combination of EXPORT_SYMBOL and __init/__exit. Fix the .fromsec field. Fixes: f02e8a6596b7 ("module: Sort exported symbols") Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-06-19Merge tag 'objtool-urgent-2022-06-19' of ↵Linus Torvalds1-11/+34
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull build tooling updates from Thomas Gleixner: - Remove obsolete CONFIG_X86_SMAP reference from objtool - Fix overlapping text section failures in faddr2line for real - Remove OBJECT_FILES_NON_STANDARD usage from x86 ftrace and replace it with finegrained annotations so objtool can validate that code correctly. * tag 'objtool-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/ftrace: Remove OBJECT_FILES_NON_STANDARD usage faddr2line: Fix overlapping text section failures, the sequel objtool: Fix obsolete reference to CONFIG_X86_SMAP
2022-06-12Merge tag 'kbuild-fixes-v5.19' of ↵Linus Torvalds4-23/+28
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: - Make the *.mod build rule portable for POSIX awk - Fix regression of 'make nsdeps' - Make scripts/check-local-export working for older bash versions - Fix scripts/gdb to extract the .config data from vmlinux * tag 'kbuild-fixes-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: scripts/gdb: change kernel config dumping method scripts/check-local-export: avoid 'wait $!' for process substitution scripts/nsdeps: adjust to the format change of *.mod files kbuild: avoid regex RS for POSIX awk
2022-06-11scripts/gdb: change kernel config dumping methodKuan-Ying Lee1-3/+3
MAGIC_START("IKCFG_ST") and MAGIC_END("IKCFG_ED") are moved out from the kernel_config_data variable. Thus, we parse kernel_config_data directly instead of considering offset of MAGIC_START and MAGIC_END. Fixes: 13610aa908dc ("kernel/configs: use .incbin directive to embed config_data.gz") Signed-off-by: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-06-09scripts/check-local-export: avoid 'wait $!' for process substitutionMasahiro Yamada1-15/+21
Bash 4.4, released in 2016, supports 'wait $!' to check the exit status of a process substitution, but it seems too new. Some people using older bash versions (on CentOS 7, Ubuntu 16.04, etc.) reported an error like this: ./scripts/check-local-export: line 54: wait: pid 17328 is not a child of this shell I used the process substitution to avoid a pipeline, which executes each command in a subshell. If the while-loop is executed in the subshell context, variable changes within are lost after the subshell terminates. Fortunately, Bash 4.2, released in 2011, supports the 'lastpipe' option, which makes the last element of a pipeline run in the current shell process. Switch to the pipeline with 'lastpipe' solution, and also set 'pipefail' to catch errors from ${NM}. Add the bash requirement to Documentation/process/changes.rst. Fixes: 31cb50b5590f ("kbuild: check static EXPORT_SYMBOL* by script instead of modpost") Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Reported-by: Michael Ellerman <mpe@ellerman.id.au> Reported-by: Wang Yugui <wangyugui@e16-tech.com> Tested-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Tested-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Nick Desaulniers <ndesaulniers@google.com> Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64) Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-06-08cert host tools: Stop complaining about deprecated OpenSSL functionsLinus Torvalds1-0/+7
OpenSSL 3.0 deprecated the OpenSSL's ENGINE API. That is as may be, but the kernel build host tools still use it. Disable the warning about deprecated declarations until somebody who cares fixes it. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-06-08scripts/nsdeps: adjust to the format change of *.mod filesMasahiro Yamada1-3/+2
Commit 22f26f21774f ("kbuild: get rid of duplication in *.mod files") changed the format of *.mod files to put one object per line, but missed to adjust scripts/nsdeps. Fixes: 22f26f21774f ("kbuild: get rid of duplication in *.mod files") Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-06-07kbuild: avoid regex RS for POSIX awkKevin Locke1-2/+2
In 22f26f21774f8 awk was added to deduplicate *.mod files. The awk invocation passes -v RS='( |\n)' to match a space or newline character as the record separator. Unfortunately, POSIX states[1] > If RS contains more than one character, the results are unspecified. Some implementations (such as the One True Awk[2] used by the BSDs) do not treat RS as a regular expression. When awk does not support regex RS, build failures such as the following are produced (first error using allmodconfig): CC [M] arch/x86/events/intel/uncore.o CC [M] arch/x86/events/intel/uncore_nhmex.o CC [M] arch/x86/events/intel/uncore_snb.o CC [M] arch/x86/events/intel/uncore_snbep.o CC [M] arch/x86/events/intel/uncore_discovery.o LD [M] arch/x86/events/intel/intel-uncore.o ld: cannot find uncore_nhmex.o: No such file or directory ld: cannot find uncore_snb.o: No such file or directory ld: cannot find uncore_snbep.o: No such file or directory ld: cannot find uncore_discovery.o: No such file or directory make[3]: *** [scripts/Makefile.build:422: arch/x86/events/intel/intel-uncore.o] Error 1 make[2]: *** [scripts/Makefile.build:487: arch/x86/events/intel] Error 2 make[1]: *** [scripts/Makefile.build:487: arch/x86/events] Error 2 make: *** [Makefile:1839: arch/x86] Error 2 To avoid this, use printf(1) to produce a newline between each object path, instead of the space produced by echo(1), so that the default RS can be used by awk. [1]: https://pubs.opengroup.org/onlinepubs/9699919799/utilities/awk.html [2]: https://github.com/onetrueawk/awk Fixes: 22f26f21774f ("kbuild: get rid of duplication in *.mod files") Signed-off-by: Kevin Locke <kevin@kevinlocke.name> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-06-06faddr2line: Fix overlapping text section failures, the sequelJosh Poimboeuf1-11/+34
If a function lives in a section other than .text, but .text also exists in the object, faddr2line may wrongly assume .text. This can result in comically wrong output. For example: $ scripts/faddr2line vmlinux.o enter_from_user_mode+0x1c enter_from_user_mode+0x1c/0x30: find_next_bit at /home/jpoimboe/git/linux/./include/linux/find.h:40 (inlined by) perf_clear_dirty_counters at /home/jpoimboe/git/linux/arch/x86/events/core.c:2504 Fix it by passing the section name to addr2line, unless the object file is vmlinux, in which case the symbol table uses absolute addresses. Fixes: 1d1a0e7c5100 ("scripts/faddr2line: Fix overlapping text section failures") Reported-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> Link: https://lore.kernel.org/r/7d25bc1408bd3a750ac26e60d2f2815a5f4a8363.1654130536.git.jpoimboe@kernel.org
2022-06-05Merge tag 'objtool-urgent-2022-06-05' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull objtool fixes from Thomas Gleixner: - Handle __ubsan_handle_builtin_unreachable() correctly and treat it as noreturn - Allow architectures to select uaccess validation - Use the non-instrumented bit test for test_cpu_has() to prevent escape from non-instrumentable regions - Use arch_ prefixed atomics for JUMP_LABEL=n builds to prevent escape from non-instrumentable regions - Mark a few tiny inline as __always_inline to prevent GCC from bringing them out of line and instrumenting them - Mark the empty stub context_tracking_enabled() as always inline as GCC brings them out of line and instruments the empty shell - Annotate ex_handler_msr_mce() as dead end * tag 'objtool-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/extable: Annotate ex_handler_msr_mce() as a dead end context_tracking: Always inline empty stubs x86: Always inline on_thread_stack() and current_top_of_stack() jump_label,noinstr: Avoid instrumentation for JUMP_LABEL=n builds x86/cpu: Elide KCSAN for cpu_has() and friends objtool: Mark __ubsan_handle_builtin_unreachable() as noreturn objtool: Add CONFIG_HAVE_UACCESS_VALIDATION
2022-06-05Merge tag 'kbuild-v5.19-3' of ↵Linus Torvalds14-341/+287
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull more Kbuild updates from Masahiro Yamada: - Fix build regressions for parisc, csky, nios2, openrisc - Simplify module builds for CONFIG_LTO_CLANG and CONFIG_X86_KERNEL_IBT - Remove arch/parisc/nm, which was presumably a workaround for old tools - Check the odd combination of EXPORT_SYMBOL and 'static' precisely - Make external module builds robust against "too long argument error" - Support j, k keys for moving the cursor in nconfig * tag 'kbuild-v5.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (25 commits) kbuild: Allow to select bash in a modified environment scripts: kconfig: nconf: make nconfig accept jk keybindings modpost: use fnmatch() to simplify match() modpost: simplify mod->name allocation kbuild: factor out the common objtool arguments kbuild: move vmlinux.o link to scripts/Makefile.vmlinux_o kbuild: clean .tmp_* pattern by make clean kbuild: remove redundant cleanups in scripts/link-vmlinux.sh kbuild: rebuild multi-object modules when objtool is updated kbuild: add cmd_and_savecmd macro kbuild: make *.mod rule robust against too long argument error kbuild: make built-in.a rule robust against too long argument error kbuild: check static EXPORT_SYMBOL* by script instead of modpost parisc: remove arch/parisc/nm kbuild: do not create *.prelink.o for Clang LTO or IBT kbuild: replace $(linked-object) with CONFIG options kbuild: do not try to parse *.cmd files for objects provided by compiler kbuild: replace $(if A,A,B) with $(or A,B) in scripts/Makefile.modpost modpost: squash if...else-if in find_elf_symbol2() modpost: reuse ARRAY_SIZE() macro for section_mismatch() ...
2022-06-05kbuild: Allow to select bash in a modified environmentSchspa Shi1-1/+1
This fixes the build error when the system has a default bash version which is too old to support associative array variables. The build error log as fellowing: linux/scripts/check-local-export: line 11: declare: -A: invalid option declare: usage: declare [-afFirtx] [-p] [name[=value] ...] Signed-off-by: Schspa Shi <schspa@gmail.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-06-05scripts: kconfig: nconf: make nconfig accept jk keybindingsIsak Ellmer1-2/+6
Make nconfig accept jk keybindings for movement in addition to arrow keys. Signed-off-by: Isak Ellmer <isak01@gmail.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-06-05modpost: use fnmatch() to simplify match()Masahiro Yamada1-61/+13
Replace the own implementation for wildcard (glob) matching with a function call to fnmatch(). Also, change the return type to 'bool'. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-06-05modpost: simplify mod->name allocationMasahiro Yamada1-13/+12
mod->name is set to the ELF filename with the suffix ".o" stripped. The current code calls strdup() and free() to manipulate the string, but a simpler approach is to pass new_module() with the name length subtracted by 2. Also, check if the passed filename ends with ".o" before stripping it. The current code blindly chops the suffix: tmp[strlen(tmp) - 2] = '\0' It will cause buffer under-run if strlen(tmp) < 2; Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-06-05kbuild: factor out the common objtool argumentsMasahiro Yamada4-97/+52
scripts/Makefile.build and scripts/link-vmlinux.sh have similar setups for the objtool arguments. It was difficult to factor out them because all the vmlinux build rules were written in a shell script. It is somewhat tedious to touch the two files every time a new objtool option is supported. To reduce the code duplication, move the objtool for vmlinux.o into scripts/Makefile.vmlinux_o. Then, move the common macros to Makefile.lib so they are shared between Makefile.build and Makefile.vmlinux_o. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
2022-06-05kbuild: move vmlinux.o link to scripts/Makefile.vmlinux_oMasahiro Yamada2-40/+62
This is a preparation for moving the objtool rule in the next commit. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
2022-06-05kbuild: clean .tmp_* pattern by make cleanMasahiro Yamada2-6/+3
Change the "make clean" rule to remove all the .tmp_* files. .tmp_objdiff is the only exception, which should be removed by "make mrproper". Rename the record directory of objdiff, .tmp_objdiff to .objdiff to avoid the removal by "make clean". Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
2022-06-04Merge tag 'loongarch-5.19' of ↵Linus Torvalds2-1/+6
git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull initial Loongarch architecture code from Arnd Bergmann: "This is the majority of the loongarch architecture code, including the final system call interface and all core functionality. It still misses three sets of peripheral but vital patches to add support for other subsystems, which have yet to pass review: - The drivers/firmware/efi stub for booting from a standard UEFI firmware implementation. Both the original custom boot interface and a draft implementation of the EFI stub did not make it, so it is currently impossible to boot the kernel, until the loongarch specific portions get accepted into the UEFI subsystem - The drivers/irqchip/irq-loongson-*.c drivers are shared with the the MIPS port, but currently lack support for ACPI based booting, which will get merged through the irqchip subsystem. - Similarly, the drivers/pci/controller/pci-loongson.c needs to be modified for ACPI support, which will be merged through the PCI subsystem. While the port cannot actually be used before all the above are merged, having it in 5.19 helps to establish the user space ABI for the libc ports to build on, and to help any treewide changes in the mainline kernel get applied here as well. A gcc-12 based tool chains for build testing is now included in https://mirrors.edge.kernel.org/pub/tools/crosstool/" Original description from Huacai Chen: "LoongArch is a new RISC ISA, which is a bit like MIPS or RISC-V. LoongArch includes a reduced 32-bit version (LA32R), a standard 32-bit version (LA32S) and a 64-bit version (LA64). LoongArch use ACPI as its boot protocol LoongArch-specific interrupt controllers (similar to APIC) are already added in the next revision of ACPI Specification (current revision is 6.4). This patchset is adding basic LoongArch support in mainline kernel, we can see a complete snapshot here: https://github.com/loongson/linux/tree/loongarch-next https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson.git/log/?h=loongarch-next Cross-compile tool chain to build kernel: https://github.com/loongson/build-tools/releases/download/2021.12.21/loongarch64-clfs-2022-03-03-cross-tools-gcc-glibc.tar.xz A CLFS-based Linux distro: https://github.com/loongson/build-tools/releases/download/2021.12.21/loongarch64-clfs-system-2022-03-03.tar.bz2 Open-source tool chain which is under review (Binutils and Gcc are already upstream): https://github.com/loongson/binutils-gdb/tree/upstream_v3.1 https://github.com/loongson/gcc/tree/loongarch_upstream_v6.3 https://github.com/loongson/glibc/tree/loongarch_2_35_dev_v2.2 Loongson and LoongArch documentations: https://github.com/loongson/LoongArch-Documentation LoongArch-specific interrupt controllers: https://mantis.uefi.org/mantis/view.php?id=2203 https://mantis.uefi.org/mantis/view.php?id=2313" Link: https://lore.kernel.org/lkml/20220603072053.35005-1-chenhuacai@loongson.cn/ * tag 'loongarch-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (24 commits) MAINTAINERS: Add maintainer information for LoongArch LoongArch: Add Loongson-3 default config file LoongArch: Add Non-Uniform Memory Access (NUMA) support LoongArch: Add multi-processor (SMP) support LoongArch: Add VDSO and VSYSCALL support LoongArch: Add some library functions LoongArch: Add misc common routines LoongArch: Add ELF and module support LoongArch: Add signal handling support LoongArch: Add system call support LoongArch: Add memory management LoongArch: Add process management LoongArch: Add exception/interrupt handling LoongArch: Add boot and setup routines LoongArch: Add other common headers LoongArch: Add atomic/locking headers LoongArch: Add CPU definition headers LoongArch: Add build infrastructure LoongArch: Add writecombine support for drm LoongArch: Add ELF-related definitions ...
2022-06-03Merge tag 'driver-core-5.19-rc1' of ↵Linus Torvalds1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here is the set of driver core changes for 5.19-rc1. Lots of tiny driver core changes and cleanups happened this cycle, but the two major things are: - firmware_loader reorganization and additions including the ability to have XZ compressed firmware images and the ability for userspace to initiate the firmware load when it needs to, instead of being always initiated by the kernel. FPGA devices specifically want this ability to have their firmware changed over the lifetime of the system boot, and this allows them to work without having to come up with yet-another-custom-uapi interface for loading firmware for them. - physical location support added to sysfs so that devices that know this information, can tell userspace where they are located in a common way. Some ACPI devices already support this today, and more bus types should support this in the future. Smaller changes include: - driver_override api cleanups and fixes - error path cleanups and fixes - get_abi script fixes - deferred probe timeout changes. It's that last change that I'm the most worried about. It has been reported to cause boot problems for a number of systems, and I have a tested patch series that resolves this issue. But I didn't get it merged into my tree before 5.18-final came out, so it has not gotten any linux-next testing. I'll send the fixup patches (there are 2) as a follow-on series to this pull request. All have been tested in linux-next for weeks, with no reported issues other than the above-mentioned boot time-outs" * tag 'driver-core-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (55 commits) driver core: fix deadlock in __device_attach kernfs: Separate kernfs_pr_cont_buf and rename_lock. topology: Remove unused cpu_cluster_mask() driver core: Extend deferred probe timeout on driver registration MAINTAINERS: add Russ Weight as a firmware loader maintainer driver: base: fix UAF when driver_attach failed test_firmware: fix end of loop test in upload_read_show() driver core: location: Add "back" as a possible output for panel driver core: location: Free struct acpi_pld_info *pld driver core: Add "*" wildcard support to driver_async_probe cmdline param driver core: location: Check for allocations failure arch_topology: Trace the update thermal pressure kernfs: Rename kernfs_put_open_node to kernfs_unlink_open_file. export: fix string handling of namespace in EXPORT_SYMBOL_NS rpmsg: use local 'dev' variable rpmsg: Fix calling device_lock() on non-initialized device firmware_loader: describe 'module' parameter of firmware_upload_register() firmware_loader: Move definitions from sysfs_upload.h to sysfs.h firmware_loader: Fix configs for sysfs split selftests: firmware: Add firmware upload selftests ...
2022-06-03Merge tag 'char-misc-5.19-rc1' of ↵Linus Torvalds2-4/+17
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char / misc / other smaller driver subsystem updates from Greg KH: "Here is the large set of char, misc, and other driver subsystem updates for 5.19-rc1. The merge request for this has been delayed as I wanted to get lots of linux-next testing due to some late arrivals of changes for the habannalabs driver. Highlights of this merge are: - habanalabs driver updates for new hardware types and fixes and other updates - IIO driver tree merge which includes loads of new IIO drivers and cleanups and additions - PHY driver tree merge with new drivers and small updates to existing ones - interconnect driver tree merge with fixes and updates - soundwire driver tree merge with some small fixes - coresight driver tree merge with small fixes and updates - mhi bus driver tree merge with lots of updates and new device support - firmware driver updates - fpga driver updates - lkdtm driver updates (with a merge conflict, more on that below) - extcon driver tree merge with small updates - lots of other tiny driver updates and fixes and cleanups, full details in the shortlog. All of these have been in linux-next for almost 2 weeks with no reported problems" * tag 'char-misc-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (387 commits) habanalabs: use separate structure info for each error collect data habanalabs: fix missing handle shift during mmap habanalabs: remove hdev from hl_ctx_get args habanalabs: do MMU prefetch as deferred work habanalabs: order memory manager messages habanalabs: return -EFAULT on copy_to_user error habanalabs: use NULL for eventfd habanalabs: update firmware header habanalabs: add support for notification via eventfd habanalabs: add topic to memory manager buffer habanalabs: handle race in driver fini habanalabs: add device memory scrub ability through debugfs habanalabs: use unified memory manager for CB flow habanalabs: unified memory manager new code for CB flow habanalabs/gaudi: set arbitration timeout to a high value habanalabs: add put by handle method to memory manager habanalabs: hide memory manager page shift habanalabs: Add separate poll interval value for protocol habanalabs: use get_task_pid() to take PID habanalabs: add prefetch flag to the MAP operation ...
2022-06-03Merge tag 'spdx-5.19-rc1' of ↵Linus Torvalds2-12/+181
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx Pull SPDX updates from Greg KH: "Here are some SPDX license marker changes. The SPDX-labeling effort has started to pick up again, so here are some changes for various parts of the tree that are related to this effort. Included in here are: - freevxfs license updates - spihash.c license cleanups - spdxcheck script updates to make things easier to work with going forward All of the license updates came from the original authors/copyright holders of the code involved. All of these have been in linux-next for weeks with no reported issues" * tag 'spdx-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx: siphash: add SPDX tags as sole licensing authority scripts/spdxcheck: Exclude top-level README scripts/spdxcheck: Exclude MAINTAINERS/CREDITS scripts/spdxcheck: Exclude config directories scripts/spdxcheck: Put excluded files and directories into a separate file scripts/spdxcheck: Add option to display files without SPDX scripts/spdxcheck: Add [sub]directory statistics scripts/spdxcheck: Add directory statistics scripts/spdxcheck: Add percentage to statistics freevxfs: relicense to GPLv2 only
2022-06-03LoongArch: Add build infrastructureHuacai Chen1-1/+1
Add Kbuild, Makefile, Kconfig and link script for LoongArch build infrastructure. Reviewed-by: Guo Ren <guoren@kernel.org> Reviewed-by: WANG Xuerui <git@xen0n.name> Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2022-06-03LoongArch: Add ELF-related definitionsHuacai Chen1-0/+5
Add ELF-related definitions for LoongArch, including: EM_LOONGARCH, KEXEC_ARCH_LOONGARCH, AUDIT_ARCH_LOONGARCH32, AUDIT_ARCH_LOONGARCH64 and NT_LOONGARCH_*. Reviewed-by: WANG Xuerui <git@xen0n.name> Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2022-06-03Merge tag 'docs-5.19-2' of git://git.lwn.net/linuxLinus Torvalds1-1/+1
Pull documentation fixes from Jonathan Corbet: "A handful of late-arriving documentation fixes and the addition of an SVG tux logo which, I'm assured, we're going to want" * tag 'docs-5.19-2' of git://git.lwn.net/linux: documentation: Format button_dev as a pointer. docs: add SVG version of the Linux logo docs: move Linux logo into a new `images` folder docs: blockdev: change title to match section content docs/conf.py: Cope with removal of language=None in Sphinx 5.0.0
2022-06-01docs: move Linux logo into a new `images` folderMiguel Ojeda1-1/+1
Having assets in the top-level `Documentation` directory can make it harder to find the documents one needs, especially if we want to add more of them later on. Instead, create a new `images` folder inside it that is used to hold assets such as logos. In addition, update the reference in `scripts/spdxcheck-test.sh`. Link: https://lore.kernel.org/lkml/8735hicoy7.fsf@meer.lwn.net/ Suggested-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Miguel Ojeda <ojeda@kernel.org> Link: https://lore.kernel.org/r/20220528153132.8636-1-ojeda@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-06-01kbuild: remove redundant cleanups in scripts/link-vmlinux.shMasahiro Yamada1-2/+0
These are cleaned by the top Makefile. vmlinux.o and .vmlinux.d matches the '*.[aios]' and '.*.d' patterns respectively. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
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