summaryrefslogtreecommitdiff
path: root/scripts
AgeCommit message (Collapse)Author
2022-08-02scripts/tracing: Fix typo 'the the' in commentSlark Xiao
Replace 'the the' with 'the' in the comment. Link: https://lkml.kernel.org/r/20220722102907.81949-1-slark_xiao@163.com Signed-off-by: Slark Xiao <slark_xiao@163.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2022-08-01Merge tag 'x86_build_for_v6.0_rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 build updates from Borislav Petkov: - Fix stack protector builds when cross compiling with Clang - Other Kbuild improvements and fixes * tag 'x86_build_for_v6.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/purgatory: Omit use of bin2c x86/purgatory: Hard-code obj-y in Makefile x86/build: Remove unused OBJECT_FILES_NON_STANDARD_test_nx.o x86/Kconfig: Fix CONFIG_CC_HAS_SANE_STACKPROTECTOR when cross compiling with clang
2022-07-29scripts/gdb: ensure the absolute path is generated on initial sourceAaron Tomlin
Post 'make scripts_gdb' a symbolic link to scripts/gdb/vmlinux-gdb.py is created. Currently 'os.path.dirname(__file__)' does not generate the absolute path to scripts/gdb resulting in the following: (gdb) source vmlinux-gdb.py Traceback (most recent call last): File "scripts/gdb/vmlinux-gdb.py", line 25, in <module> import linux.utils ModuleNotFoundError: No module named 'linux' This patch ensures that the absolute path to scripts/gdb in relation to the given file is generated so each module can be located accordingly. Link: https://lkml.kernel.org/r/20220712110248.1404125-1-atomlin@redhat.com Signed-off-by: Aaron Tomlin <atomlin@redhat.com> Reviewed-by: Douglas Anderson <dianders@chromium.org> Cc: Jan Kiszka <jan.kiszka@siemens.com> Cc: Kieran Bingham <kbingham@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-07-27kconfig: Qt5: tell the user which packages are requiredRandy Dunlap
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 Yamada
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 Yamada
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 Mueller
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 Yamada
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 Schier
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 Yamada
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 Yamada
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 Yamada
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 Mosnacek
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 Yamada
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 Yamada
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 Yamada
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>
2022-07-27powerpc/purgatory: Omit use of bin2cMasahiro Yamada
The .incbin assembler directive is much faster than bin2c + $(CC). Do similar refactoring as in commit 4c0f032d4963 ("s390/purgatory: Omit use of bin2c"). Please note the .quad directive matches to size_t in C (both 8 byte) because the purgatory is compiled only for the 64-bit kernel. (KEXEC_FILE depends on PPC64). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220725015619.618070-1-masahiroy@kernel.org
2022-07-25x86/purgatory: Omit use of bin2cMasahiro Yamada
The .incbin assembler directive is much faster than bin2c + $(CC). Do similar refactoring as in 4c0f032d4963 ("s390/purgatory: Omit use of bin2c"). Please note the .quad directive matches to size_t in C (both 8 byte) because the purgatory is compiled only for the 64-bit kernel. (KEXEC_FILE depends on X86_64). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lore.kernel.org/r/20220725020812.622255-2-masahiroy@kernel.org
2022-07-22Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextJakub Kicinski
Daniel Borkmann says: ==================== bpf-next 2022-07-22 We've added 73 non-merge commits during the last 12 day(s) which contain a total of 88 files changed, 3458 insertions(+), 860 deletions(-). The main changes are: 1) Implement BPF trampoline for arm64 JIT, from Xu Kuohai. 2) Add ksyscall/kretsyscall section support to libbpf to simplify tracing kernel syscalls through kprobe mechanism, from Andrii Nakryiko. 3) Allow for livepatch (KLP) and BPF trampolines to attach to the same kernel function, from Song Liu & Jiri Olsa. 4) Add new kfunc infrastructure for netfilter's CT e.g. to insert and change entries, from Kumar Kartikeya Dwivedi & Lorenzo Bianconi. 5) Add a ksym BPF iterator to allow for more flexible and efficient interactions with kernel symbols, from Alan Maguire. 6) Bug fixes in libbpf e.g. for uprobe binary path resolution, from Dan Carpenter. 7) Fix BPF subprog function names in stack traces, from Alexei Starovoitov. 8) libbpf support for writing custom perf event readers, from Jon Doron. 9) Switch to use SPDX tag for BPF helper man page, from Alejandro Colomar. 10) Fix xsk send-only sockets when in busy poll mode, from Maciej Fijalkowski. 11) Reparent BPF maps and their charging on memcg offlining, from Roman Gushchin. 12) Multiple follow-up fixes around BPF lsm cgroup infra, from Stanislav Fomichev. 13) Use bootstrap version of bpftool where possible to speed up builds, from Pu Lehui. 14) Cleanup BPF verifier's check_func_arg() handling, from Joanne Koong. 15) Make non-prealloced BPF map allocations low priority to play better with memcg limits, from Yafang Shao. 16) Fix BPF test runner to reject zero-length data for skbs, from Zhengchao Shao. 17) Various smaller cleanups and improvements all over the place. * https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (73 commits) bpf: Simplify bpf_prog_pack_[size|mask] bpf: Support bpf_trampoline on functions with IPMODIFY (e.g. livepatch) bpf, x64: Allow to use caller address from stack ftrace: Allow IPMODIFY and DIRECT ops on the same function ftrace: Add modify_ftrace_direct_multi_nolock bpf/selftests: Fix couldn't retrieve pinned program in xdp veth test bpf: Fix build error in case of !CONFIG_DEBUG_INFO_BTF selftests/bpf: Fix test_verifier failed test in unprivileged mode selftests/bpf: Add negative tests for new nf_conntrack kfuncs selftests/bpf: Add tests for new nf_conntrack kfuncs selftests/bpf: Add verifier tests for trusted kfunc args net: netfilter: Add kfuncs to set and change CT status net: netfilter: Add kfuncs to set and change CT timeout net: netfilter: Add kfuncs to allocate and insert CT net: netfilter: Deduplicate code in bpf_{xdp,skb}_ct_lookup bpf: Add documentation for kfuncs bpf: Add support for forcing kfunc args to be trusted bpf: Switch to new kfunc flags infrastructure tools/resolve_btfids: Add support for 8-byte BTF sets bpf: Introduce 8-byte BTF set ... ==================== Link: https://lore.kernel.org/r/20220722221218.29943-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-22bpf, docs: Use SPDX license identifier in bpf_doc.pyAlejandro Colomar
The Linux man-pages project now uses SPDX tags, instead of the full license text. Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://www.kernel.org/doc/man-pages/licenses.html Link: https://spdx.org/licenses/Linux-man-pages-copyleft.html Link: https://lore.kernel.org/bpf/20220721110821.8240-1-alx.manpages@gmail.com
2022-07-21Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
No conflicts. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-21scripts/gdb: Fix gdb 'lx-symbols' commandKhalid Masum
Currently the command 'lx-symbols' in gdb exits with the error`Function "do_init_module" not defined in "kernel/module.c"`. This occurs because the file kernel/module.c was moved to kernel/module/main.c. Fix this breakage by changing the path to "kernel/module/main.c" in LoadModuleBreakpoint. Signed-off-by: Khalid Masum <khalid.masum.92@gmail.com> Acked-by: Luis Chamberlain <mcgrof@kernel.org> Fixes: cfc1d277891e ("module: Move all into module/") Reviewed-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-07-21scripts/gdb: fix 'lx-dmesg' on 32 bits archAntonio Borneo
The type atomic_long_t can have size 4 or 8 bytes, depending on CONFIG_64BIT; it's only content, the field 'counter', is either an int or a s64 value. Current code incorrectly uses the fixed size utils.read_u64() to read the field 'counter' inside atomic_long_t. On 32 bits architectures reading the last element 'tail_id' of the struct prb_desc_ring: struct prb_desc_ring { ... atomic_long_t tail_id; }; causes the utils.read_u64() to access outside the boundary of the struct and the gdb command 'lx-dmesg' exits with error: Python Exception <class 'IndexError'>: index out of range Error occurred in Python: index out of range Query the really used atomic_long_t counter type size. Link: https://lore.kernel.org/r/20220617143758.137307-1-antonio.borneo@foss.st.com Fixes: e60768311af8 ("scripts/gdb: update for lockless printk ringbuffer") Signed-off-by: Antonio Borneo <antonio.borneo@foss.st.com> [pmladek@suse.com: Query the really used atomic_long_t counter type size] Tested-by: Antonio Borneo <antonio.borneo@foss.st.com> Reviewed-by: John Ogness <john.ogness@linutronix.de> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20220719122831.19890-1-pmladek@suse.com
2022-07-17scripts/bloat-o-meter: add -p argumentNikolay Borisov
When doing cross platform development on a machine sometimes it might be useful to invoke bloat-o-meter for files which haven't been build with the native toolchain. In cases when the host nm doesn't support the target one then a toolchain-specific nm could be used. Add this ability by adding the -p allowing invocations as: ./scripts/bloat-o-meter -p riscv64-unknown-linux-gnu- file1.o file2.o Link: https://lkml.kernel.org/r/20220701113513.1938008-2-nborisov@suse.com Signed-off-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-07-17scripts/bloat-o-meter: switch argument parsing to using argparseNikolay Borisov
This will facilitate further extension to the arguments the script takes. As an added benefit it also produces saner usage output, where mutual exclusivity of the c|d|t parameters is clearly visible: ./scripts/bloat-o-meter -h usage: bloat-o-meter [-h] [-c | -d | -t] file1 file2 Simple script used to compare the symbol sizes of 2 object files positional arguments: file1 First file to compare file2 Second file to compare optional arguments: -h, --help show this help message and exit -c categorize output based on symbol type -d Show delta of Data Section -t Show delta of text Section Link: https://lkml.kernel.org/r/20220701113513.1938008-1-nborisov@suse.com Signed-off-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-07-16scripts/coccinelle/free: add NULL test before dev_{put, hold} functionsZiyang Xuan
Since commit b37a46683739 ("netdevice: add the case if dev is NULL"), NULL check before dev_{put, hold} functions is not needed. Signed-off-by: Ziyang Xuan <william.xuanziyang@huawei.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2022-07-16coccinelle: Remove script that checks replacing 0/1 with false/true in ↵Steven Rostedt (Google)
functions returning bool There is nothing wrong with current code that returns 0 or 1 for a function returning bool. It is perfectly acceptable by the C standard. To avoid churn of unwanted patches that are constantly sent to maintainers who do not care about this change, remove the script that flags it as an issue. This issue is not worth the burden on maintainers to accept useless patches. Link: https://lore.kernel.org/all/20220705073822.7276-1-jiapeng.chong@linux.alibaba.com/ Link: https://lore.kernel.org/all/20220429075201.68581-1-jiapeng.chong@linux.alibaba.com/ Link: https://lore.kernel.org/all/1649236467-29390-1-git-send-email-baihaowen@meizu.com/ Link: https://lore.kernel.org/all/20220317014740.3138-1-jiapeng.chong@linux.alibaba.com/ Link: https://lore.kernel.org/all/190b5c2f2f2fb9cc775fce8daed72bf893be48a4.1642065293.git.davidcomponentone@gmail.com/ Link: https://lore.kernel.org/all/20211214113845.439392-1-deng.changcheng@zte.com.cn/ Link: https://lore.kernel.org/all/20210824065735.60660-1-deng.changcheng@zte.com.cn/ Link: https://lore.kernel.org/all/20210824064305.60081-1-deng.changcheng@zte.com.cn/ Link: https://lore.kernel.org/all/20210824062359.59474-1-deng.changcheng@zte.com.cn/ Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Michal Marek <mmarek@suse.cz> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Julia Lawall <julia.lawall@inria.fr> Acked-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Acked-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2022-07-14Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
include/net/sock.h 310731e2f161 ("net: Fix data-races around sysctl_mem.") e70f3c701276 ("Revert "net: set SK_MEM_QUANTUM to 4096"") https://lore.kernel.org/all/20220711120211.7c8b7cba@canb.auug.org.au/ net/ipv4/fib_semantics.c 747c14307214 ("ip: fix dflt addr selection for connected nexthop") d62607c3fe45 ("net: rename reference+tracking helpers") net/tls/tls.h include/net/tls.h 3d8c51b25a23 ("net/tls: Check for errors in tls_device_init") 587903142308 ("tls: create an internal header") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-11Merge tag 'x86_bugs_retbleed' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 retbleed fixes from Borislav Petkov: "Just when you thought that all the speculation bugs were addressed and solved and the nightmare is complete, here's the next one: speculating after RET instructions and leaking privileged information using the now pretty much classical covert channels. It is called RETBleed and the mitigation effort and controlling functionality has been modelled similar to what already existing mitigations provide" * tag 'x86_bugs_retbleed' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits) x86/speculation: Disable RRSBA behavior x86/kexec: Disable RET on kexec x86/bugs: Do not enable IBPB-on-entry when IBPB is not supported x86/entry: Move PUSH_AND_CLEAR_REGS() back into error_entry x86/bugs: Add Cannon lake to RETBleed affected CPU list x86/retbleed: Add fine grained Kconfig knobs x86/cpu/amd: Enumerate BTC_NO x86/common: Stamp out the stepping madness KVM: VMX: Prevent RSB underflow before vmenter x86/speculation: Fill RSB on vmexit for IBRS KVM: VMX: Fix IBRS handling after vmexit KVM: VMX: Prevent guest RSB poisoning attacks with eIBRS KVM: VMX: Convert launched argument to flags KVM: VMX: Flatten __vmx_vcpu_run() objtool: Re-add UNWIND_HINT_{SAVE_RESTORE} x86/speculation: Remove x86_spec_ctrl_mask x86/speculation: Use cached host SPEC_CTRL value for guest entry/exit x86/speculation: Fix SPEC_CTRL write on SMT state change x86/speculation: Fix firmware entry SPEC_CTRL handling x86/speculation: Fix RSB filling with CONFIG_RETPOLINE=n ...
2022-07-11module: panic: Taint the kernel when selftest modules loadDavid Gow
Taint the kernel with TAINT_TEST whenever a test module loads, by adding a new "TEST" module property, and setting it for all modules in the tools/testing directory. This property can also be set manually, for tests which live outside the tools/testing directory with: MODULE_INFO(test, "Y"); Reviewed-by: Luis Chamberlain <mcgrof@kernel.org> Reviewed-by: Aaron Tomlin <atomlin@redhat.com> Acked-by: Brendan Higgins <brendanhiggins@google.com> Signed-off-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-07-11modules: Ensure natural alignment for .altinstructions and __bug_table sectionsHelge Deller
In the kernel image vmlinux.lds.S linker scripts the .altinstructions and __bug_table sections are 4- or 8-byte aligned because they hold 32- and/or 64-bit values. Most architectures use altinstructions and BUG() or WARN() in modules as well, but in the module linker script (module.lds.S) those sections are currently missing. As consequence the linker will store their content byte-aligned by default, which then can lead to unnecessary unaligned memory accesses by the CPU when those tables are processed at runtime. Usually unaligned memory accesses are unnoticed, because either the hardware (as on x86 CPUs) or in-kernel exception handlers (e.g. on parisc or sparc) emulate and fix them up at runtime. Nevertheless, such unaligned accesses introduce a performance penalty and can even crash the kernel if there is a bug in the unalignment exception handlers (which happened once to me on the parisc architecture and which is why I noticed that issue at all). This patch fixes a non-critical issue and might be backported at any time. It's trivial and shouldn't introduce any regression because it simply tells the linker to use a different (8-byte alignment) for those sections by default. Signed-off-by: Helge Deller <deller@gmx.de> Link: https://lore.kernel.org/all/Yr8%2Fgr8e8I7tVX4d@p100/ Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
2022-07-11Merge 5.19-rc6 into char-misc-nextGreg Kroah-Hartman
We need the misc driver fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-07-10kbuild: remove unused cmd_none in scripts/Makefile.modinstMasahiro Yamada
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>
2022-07-07scripts: sphinx-pre-install: place a warning for Sphinx >= 3.0Mauro Carvalho Chehab
Newer versions of Sphinx have a known bug: https://github.com/sphinx-doc/sphinx/pull/8313 Those currently produces 11 false-positive warnings On Sphinx version 3.1+. While Sphinx fix is not applied, let's warn adventurers that would be using Sphinx installed via distro packages. Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org> Link: https://lore.kernel.org/r/085e0ada65c11da9303d07e70c510dc45f21315b.1656756450.git.mchehab@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-07-07scripts: sphinx-pre-install: provide both venv and package installsMauro Carvalho Chehab
As it is not a consensus about installing sphinx using venv, and modern distributions are now shipping with Sphinx versions above the minimal requirements to build the docs, provide both venv and package install commands by default. Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org> Link: https://lore.kernel.org/r/7c99d985df204c73e3daafd5fd2f30a31269405d.1656756450.git.mchehab@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-07-07scripts: sphinx-pre-install: check for PDF min version later onMauro Carvalho Chehab
Better to add the PDF note late for venv recommendation. Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org> Link: https://lore.kernel.org/r/8e117aabe6dfa1b1ec92dccd20e801393c977667.1656756450.git.mchehab@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-07-07scripts: sphinx-pre-install: report broken venvMauro Carvalho Chehab
After distro upgrades, the directory names for python may change. On such case, the previously-created venv will be broken, and sphinx-build won't run. Add a logic to report it. Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org> Link: https://lore.kernel.org/r/f117f03555b0636d2be0b68f3a23b1d3f03ccf1d.1656756450.git.mchehab@kernel.org [jc: fixed typo in warning message] Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-07-07scripts: sphinx-pre-install: fix venv version check logicMauro Carvalho Chehab
The logic which checks if the venv version is good enough but was not activated is broken: it is checking against the wrong val, making it to recommend to re-create a venv every time. Fix it. Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org> Link: https://lore.kernel.org/r/afe01b7863fd655986d84ace8948f3d7aede796d.1656756450.git.mchehab@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-07-03coccinelle: Extend address test from ifaddr semantic patch to test expressionsJérémy LEFAURE
The test of an expression's address does not necessarily represent the whole condition, it may only be a part of it. Also, an expression's address is likely to be non-zero in every test expression, not only in if statements. This change aims at detecting an address test in more complex conditions and not only in if statements. Signed-off-by: Jérémy Lefaure <jeremy.lefaure@netatmo.com> Signed-off-by: Julia Lawall <julia.lawall@inria.fr>
2022-07-01scripts/tags.sh: Include tools directory in tags generationVipin Sharma
Add tools directory in generating tags and quiet the "No such file or directory" warnings. It reverts the changes introduced in commit 162343a876f1 ("scripts/tags.sh: exclude tools directory from tags generation") while maintainig the original intent of the patch to get rid of the warnings. This allows the root level cscope files to include tools source code besides kernel and a single place to browse the code for both. Acked-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com> Signed-off-by: Vipin Sharma <vipinsh@google.com> Link: https://lore.kernel.org/r/20220618005457.2379324-1-vipinsh@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-06-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
drivers/net/ethernet/microchip/sparx5/sparx5_switchdev.c 9c5de246c1db ("net: sparx5: mdb add/del handle non-sparx5 devices") fbb89d02e33a ("net: sparx5: Allow mdb entries to both CPU and ports") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-06-30scripts: get_feat.pl: use /usr/bin/env to find perlDavid Reaver
I tried running `make pdfdocs` on NixOS, but it failed because get_feat.pl uses a shebang line with /usr/bin/perl, and that file path doesn't exist on NixOS. Using the more portable /usr/bin/env perl fixes the problem. Signed-off-by: David Reaver <me@davidreaver.com> Link: https://lore.kernel.org/r/20220625211548.1200198-1-me@davidreaver.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-06-29x86/retbleed: Add fine grained Kconfig knobsPeter Zijlstra
Do fine-grained Kconfig for all the various retbleed parts. NOTE: if your compiler doesn't support return thunks this will silently 'upgrade' your mitigation to IBPB, you might not like this. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Borislav Petkov <bp@suse.de>
2022-06-29gen_compile_commands: handle multiple lines per .mod fileJohn Hubbard
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>
2022-06-27Merge branch 'master' into mm-nonmm-stableakpm
2022-06-27objtool: Add entry UNRET validationPeter Zijlstra
Since entry asm is tricky, add a validation pass that ensures the retbleed mitigation has been done before the first actual RET instruction. Entry points are those that either have UNWIND_HINT_ENTRY, which acts as UNWIND_HINT_EMPTY but marks the instruction as an entry point, or those that have UWIND_HINT_IRET_REGS at +0. This is basically a variant of validate_branch() that is intra-function and it will simply follow all branches from marked entry points and ensures that all paths lead to ANNOTATE_UNRET_END. If a path hits RET or an indirection the path is a fail and will be reported. There are 3 ANNOTATE_UNRET_END instances: - UNTRAIN_RET itself - exception from-kernel; this path doesn't need UNTRAIN_RET - all early exceptions; these also don't need UNTRAIN_RET Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Borislav Petkov <bp@suse.de>
2022-06-26kbuild: Ignore __this_module in gen_autoksyms.shSami Tolvanen
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>
2022-06-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
No conflicts. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-06-20modpost: fix section mismatch check for exported init/exit sectionsMasahiro Yamada
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 Torvalds
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
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-13 13:39:11 +0000