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2022-11-27Merge tag 'objtool_urgent_for_v6.1_rc7' of ↵Linus Torvalds1-3/+4
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull objtool fix from Borislav Petkov: - Handle different output of readelf on different distros running ppc64le which confuses faddr2line's function offsets conversion * tag 'objtool_urgent_for_v6.1_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: scripts/faddr2line: Fix regression in name resolution on ppc64le
2022-11-24scripts: add rust in scripts/Makefile.packageParan Lee1-2/+2
Add rust argument at TAR_CONTENT in scripts/Makefile.package script with alphabetical order. Signed-off-by: Paran Lee <p4ranlee@gmail.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-11-17kbuild: Restore .version auto-increment behaviour for Debian packagesMarc Zyngier1-1/+1
Since 2df8220cc511 ("kbuild: build init/built-in.a just once"), generating Debian packages using 'make bindeb-pkg' results in packages that are stuck to the same .version, leading to unexpected behaviours (multiple packages with the same version). That's because the mkdebian script samples the build version before building the kernel, and forces the use of that version number for the actual build. Restore the previous behaviour by calling init/build-version instead of reading the .version file. This is likely to result in too many .version bumps, but this is what was happening before (although the bump was affecting builds made after the current one). Fixes: 2df8220cc511 ("kbuild: build init/built-in.a just once") Signed-off-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-11-16scripts/faddr2line: Fix regression in name resolution on ppc64leSrikar Dronamraju1-3/+4
Commit 1d1a0e7c5100 ("scripts/faddr2line: Fix overlapping text section failures") can cause faddr2line to fail on ppc64le on some distributions, while it works fine on other distributions. The failure can be attributed to differences in the readelf output. $ ./scripts/faddr2line vmlinux find_busiest_group+0x00 no match for find_busiest_group+0x00 On ppc64le, readelf adds the localentry tag before the symbol name on some distributions, and adds the localentry tag after the symbol name on other distributions. This problem has been discussed previously: https://lore.kernel.org/bpf/20191211160133.GB4580@calabresa/ This problem can be overcome by filtering out the localentry tags in the readelf output. Similar fixes are already present in the kernel by way of the following commits: 1fd6cee127e2 ("libbpf: Fix VERSIONED_SYM_COUNT number parsing") aa915931ac3e ("libbpf: Fix readelf output parsing for Fedora") [jpoimboe: rework commit log] Fixes: 1d1a0e7c5100 ("scripts/faddr2line: Fix overlapping text section failures") Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Reviewed-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com> Link: https://lore.kernel.org/r/20220927075211.897152-1-srikar@linux.vnet.ibm.com Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Peter Zijlstra <peterz@infradead.org>
2022-11-11Merge tag 's390-6.1-4' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 fixes from Alexander Gordeev: - fix memcpy warning about field-spanning write in zcrypt driver - minor updates to defconfigs - remove CONFIG_DEBUG_INFO_BTF from all defconfigs and add btf.config addon config file. It significantly decreases compile time and allows quickly enabling that option into the current kernel config - add kasan.config addon config file which allows to easily enable KASAN into the current kernel config - binutils commit 906f69cf65da ("IBM zSystems: Issue error for *DBL relocs on misaligned symbols") caused several link errors. Always build relocatable kernel to avoid this problem - raise the minimum clang version to 15.0.0 to avoid silent generation of a corrupted code * tag 's390-6.1-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: scripts/min-tool-version.sh: raise minimum clang version to 15.0.0 for s390 s390: always build relocatable kernel s390/configs: add kasan.config addon config file s390/configs: move CONFIG_DEBUG_INFO_BTF into btf.config addon config s390: update defconfigs s390/zcrypt: fix warning about field-spanning write
2022-11-09scripts/min-tool-version.sh: raise minimum clang version to 15.0.0 for s390Heiko Carstens1-1/+1
Before version 15.0.0 llvm's integrated assembler may silently generate corrupted code on s390. See e.g. commit e9953b729b78 ("s390/boot: workaround llvm IAS bug") for further details. While there have been workarounds applied for all known existing locations, there is nothing that prevents that new code with problematic patterns will be added. Therefore raise the minimum clang version to 15.0.0. Note that llvm commit e547b04d5b2c ("[SystemZ] Bugfix for symbolic displacements."), which is included in 15.0.0, fixes the broken code generation. Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Acked-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20221031123456.3872220-1-hca@linux.ibm.com Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
2022-11-02kconfig: fix segmentation fault in menuconfig searchMasahiro Yamada1-19/+4
Since commit d05377e184fc ("kconfig: Create links to main menu items in search"), menuconfig shows a jump key next to "Main menu" if the nearest visible parent is the rootmenu. If you press that jump key, menuconfig crashes with a segmentation fault. For example, do this: $ make ARCH=arm64 allnoconfig menuconfig Press '/' to search for the string "ACPI". Press '1' to choose "(1) Main menu". Then, menuconfig crashed with a segmentation fault. The following code in search_conf() conf(targets[i]->parent, targets[i]); results in NULL pointer dereference because targets[i] is the rootmenu, which does not have a parent. Commit d05377e184fc tried to fix the issue of top-level items not having a jump key, but adding the "Main menu" was not the right fix. The correct fix is to show the searched item itself. This fixes another weird behavior described in the comment block. Fixes: d05377e184fc ("kconfig: Create links to main menu items in search") Reported-by: Johannes Zink <j.zink@pengutronix.de> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Bagas Sanjaya <bagasdotme@gmail.com> Tested-by: Johannes Zink <j.zink@pengutronix.de>
2022-10-28kbuild: fix typo in modpostWill McVicker1-1/+1
Commit f73edc8951b2 ("kbuild: unify two modpost invocations") introduced a typo (moudle.symvers-if-present) which results in the kernel's Module.symvers to not be included as a prerequisite for $(KBUILD_EXTMOD)/Module.symvers. Fix the typo to restore the intended functionality. Fixes: f73edc8951b2 ("kbuild: unify two modpost invocations") Signed-off-by: Will McVicker <willmcvicker@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-10-16Merge tag 'kbuild-fixes-v6.1' of ↵Linus Torvalds4-9/+8
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: - Fix CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y compile error for the combination of Clang >= 14 and GAS <= 2.35. - Drop vmlinux.bz2 from the rpm package as it just annoyingly increased the package size. - Fix modpost error under build environments using musl. - Make *.ll files keep value names for easier debugging - Fix single directory build - Prevent RISC-V from selecting the broken DWARF5 support when Clang and GAS are used together. * tag 'kbuild-fixes-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: lib/Kconfig.debug: Add check for non-constant .{s,u}leb128 support to DWARF5 kbuild: fix single directory build kbuild: add -fno-discard-value-names to cmd_cc_ll_c scripts/clang-tools: Convert clang-tidy args to list modpost: put modpost options before argument kbuild: Stop including vmlinux.bz2 in the rpm's Kconfig.debug: add toolchain checks for DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT Kconfig.debug: simplify the dependency of DEBUG_INFO_DWARF4/5
2022-10-15kbuild: add -fno-discard-value-names to cmd_cc_ll_cNick Desaulniers1-1/+1
When debugging LLVM IR, it can be handy for clang to not discard value names used for local variables and parameters. Compare the generated IR. -fdiscard-value-names: define i32 @core_sys_select(i32 %0, ptr %1, ptr %2, ptr %3, ptr %4) { %6 = alloca i64 %7 = alloca %struct.poll_wqueues %8 = alloca [64 x i32] -fno-discard-value-names: define i32 @core_sys_select(i32 %n, ptr %inp, ptr %outp, ptr %exp, ptr %end_time) { %expire.i = alloca i64 %table.i = alloca %struct.poll_wqueues %stack_fds = alloca [64 x i32] The rule for generating human readable LLVM IR (.ll) is only useful as a debugging feature: $ make LLVM=1 fs/select.ll As Fangrui notes: A LLVM_ENABLE_ASSERTIONS=off build of Clang defaults to -fdiscard-value-names. A LLVM_ENABLE_ASSERTIONS=on build of Clang defaults to -fno-discard-value-names. Explicitly enable -fno-discard-value-names so that the IR always contains value names regardless of whether assertions were enabled or not. Assertions generally are not enabled in releases of clang packaged by distributions. Link: https://github.com/ClangBuiltLinux/linux/issues/1467 Reviewed-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Fangrui Song <maskray@google.com> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-10-14scripts/clang-tools: Convert clang-tidy args to listGuru Das Srinagesh1-5/+6
Convert list of clang-tidy arguments to a list for ease of adding to them and extending them as required. Signed-off-by: Guru Das Srinagesh <quic_gurus@quicinc.com> Suggested-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-10-14modpost: put modpost options before argumentRichard Acayan1-1/+1
The musl implementation of getopt stops looking for options after the first non-option argument. Put the options before the non-option argument so environments using musl can still build the kernel and modules. Fixes: f73edc8951b2 ("kbuild: unify two modpost invocations") Link: https://git.musl-libc.org/cgit/musl/tree/src/misc/getopt.c?h=dc9285ad1dc19349c407072cc48ba70dab86de45#n44 Signed-off-by: Richard Acayan <mailingradian@gmail.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-10-12Merge tag 'mm-nonmm-stable-2022-10-11' of ↵Linus Torvalds2-16/+156
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull non-MM updates from Andrew Morton: - hfs and hfsplus kmap API modernization (Fabio Francesco) - make crash-kexec work properly when invoked from an NMI-time panic (Valentin Schneider) - ntfs bugfixes (Hawkins Jiawei) - improve IPC msg scalability by replacing atomic_t's with percpu counters (Jiebin Sun) - nilfs2 cleanups (Minghao Chi) - lots of other single patches all over the tree! * tag 'mm-nonmm-stable-2022-10-11' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (71 commits) include/linux/entry-common.h: remove has_signal comment of arch_do_signal_or_restart() prototype proc: test how it holds up with mapping'less process mailmap: update Frank Rowand email address ia64: mca: use strscpy() is more robust and safer init/Kconfig: fix unmet direct dependencies ia64: update config files nilfs2: replace WARN_ONs by nilfs_error for checkpoint acquisition failure fork: remove duplicate included header files init/main.c: remove unnecessary (void*) conversions proc: mark more files as permanent nilfs2: remove the unneeded result variable nilfs2: delete unnecessary checks before brelse() checkpatch: warn for non-standard fixes tag style usr/gen_init_cpio.c: remove unnecessary -1 values from int file ipc/msg: mitigate the lock contention with percpu counter percpu: add percpu_counter_add_local and percpu_counter_sub_local fs/ocfs2: fix repeated words in comments relay: use kvcalloc to alloc page array in relay_alloc_page_array proc: make config PROC_CHILDREN depend on PROC_FS fs: uninline inode_maybe_inc_iversion() ...
2022-10-13kbuild: Stop including vmlinux.bz2 in the rpm'sZack Rusin1-2/+0
vmlinux.bz2 was added to the rpm packages in 2009 in the fc370ecfdb37 ("kbuild: add vmlinux to kernel rpm") but seemingly hasn't been used since. Originally this should have been split up in a seperate debugging package because it massively increases the size of the generated rpm's e.g. kernel rpm built using binrpm-pkg on Fedora 36 default 5.19.8 kernel config and localmodconfig is ~255MB with vmlinux.bz2 and only ~65MB without it. Make the kernel built rpms about 4x smaller by not including the unused vmlinux.bz2 in them. Signed-off-by: Zack Rusin <zackr@vmware.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-10-10Merge tag 'mm-stable-2022-10-08' of ↵Linus Torvalds2-0/+17
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: - Yu Zhao's Multi-Gen LRU patches are here. They've been under test in linux-next for a couple of months without, to my knowledge, any negative reports (or any positive ones, come to that). - Also the Maple Tree from Liam Howlett. An overlapping range-based tree for vmas. It it apparently slightly more efficient in its own right, but is mainly targeted at enabling work to reduce mmap_lock contention. Liam has identified a number of other tree users in the kernel which could be beneficially onverted to mapletrees. Yu Zhao has identified a hard-to-hit but "easy to fix" lockdep splat at [1]. This has yet to be addressed due to Liam's unfortunately timed vacation. He is now back and we'll get this fixed up. - Dmitry Vyukov introduces KMSAN: the Kernel Memory Sanitizer. It uses clang-generated instrumentation to detect used-unintialized bugs down to the single bit level. KMSAN keeps finding bugs. New ones, as well as the legacy ones. - Yang Shi adds a userspace mechanism (madvise) to induce a collapse of memory into THPs. - Zach O'Keefe has expanded Yang Shi's madvise(MADV_COLLAPSE) to support file/shmem-backed pages. - userfaultfd updates from Axel Rasmussen - zsmalloc cleanups from Alexey Romanov - cleanups from Miaohe Lin: vmscan, hugetlb_cgroup, hugetlb and memory-failure - Huang Ying adds enhancements to NUMA balancing memory tiering mode's page promotion, with a new way of detecting hot pages. - memcg updates from Shakeel Butt: charging optimizations and reduced memory consumption. - memcg cleanups from Kairui Song. - memcg fixes and cleanups from Johannes Weiner. - Vishal Moola provides more folio conversions - Zhang Yi removed ll_rw_block() :( - migration enhancements from Peter Xu - migration error-path bugfixes from Huang Ying - Aneesh Kumar added ability for a device driver to alter the memory tiering promotion paths. For optimizations by PMEM drivers, DRM drivers, etc. - vma merging improvements from Jakub Matěn. - NUMA hinting cleanups from David Hildenbrand. - xu xin added aditional userspace visibility into KSM merging activity. - THP & KSM code consolidation from Qi Zheng. - more folio work from Matthew Wilcox. - KASAN updates from Andrey Konovalov. - DAMON cleanups from Kaixu Xia. - DAMON work from SeongJae Park: fixes, cleanups. - hugetlb sysfs cleanups from Muchun Song. - Mike Kravetz fixes locking issues in hugetlbfs and in hugetlb core. Link: https://lkml.kernel.org/r/CAOUHufZabH85CeUN-MEMgL8gJGzJEWUrkiM58JkTbBhh-jew0Q@mail.gmail.com [1] * tag 'mm-stable-2022-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (555 commits) hugetlb: allocate vma lock for all sharable vmas hugetlb: take hugetlb vma_lock when clearing vma_lock->vma pointer hugetlb: fix vma lock handling during split vma and range unmapping mglru: mm/vmscan.c: fix imprecise comments mm/mglru: don't sync disk for each aging cycle mm: memcontrol: drop dead CONFIG_MEMCG_SWAP config symbol mm: memcontrol: use do_memsw_account() in a few more places mm: memcontrol: deprecate swapaccounting=0 mode mm: memcontrol: don't allocate cgroup swap arrays when memcg is disabled mm/secretmem: remove reduntant return value mm/hugetlb: add available_huge_pages() func mm: remove unused inline functions from include/linux/mm_inline.h selftests/vm: add selftest for MADV_COLLAPSE of uffd-minor memory selftests/vm: add file/shmem MADV_COLLAPSE selftest for cleared pmd selftests/vm: add thp collapse shmem testing selftests/vm: add thp collapse file and tmpfs testing selftests/vm: modularize thp collapse memory operations selftests/vm: dedup THP helpers mm/khugepaged: add tracepoint to hpage_collapse_scan_file() mm/madvise: add file and shmem support to MADV_COLLAPSE ...
2022-10-10Merge tag 'devicetree-for-6.1' of ↵Linus Torvalds2-8/+75
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull devicetree updates from Rob Herring: "DT core: - Fix node refcounting in of_find_last_cache_level() - Constify device_node in of_device_compatible_match() - Fix 'dma-ranges' handling in bus controller nodes - Fix handling of initrd start > end - Improve error reporting in of_irq_init() - Taint kernel on DT unittest running - Use strscpy instead of strlcpy - Add a build target, dt_compatible_check, to check for compatible strings used in kernel sources against compatible strings in DT schemas. - Handle DT_SCHEMA_FILES changes when rebuilding DT bindings: - LED bindings for MT6370 PMIC - Convert Mediatek mtk-gce mailbox, MIPS CPU interrupt controller, mt7621 I2C, virtio,pci-iommu, nxp,tda998x, QCom fastrpc, qcom,pdc, and arm,versatile-sysreg to DT schema format - Add nvmem cells to u-boot,env schema - Add more LED_COLOR_ID definitions - Require 'opp-table' uses to be a node - Various schema fixes to match QEMU 'virt' DT usage - Tree wide dropping of redundant 'Device Tree Binding' in schema titles - More (unevaluated|additional)Properties fixes in schema child nodes - Drop various redundant minItems equal to maxItems" * tag 'devicetree-for-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (62 commits) of: base: Shift refcount decrement in of_find_last_cache_level() dt-bindings: leds: Add MediaTek MT6370 flashlight dt-bindings: leds: mt6370: Add MediaTek MT6370 current sink type LED indicator dt-bindings: mailbox: Convert mtk-gce to DT schema of: base: make of_device_compatible_match() accept const device node of: Fix "dma-ranges" handling for bus controllers of: fdt: Remove unused struct fdt_scan_status dt-bindings: display: st,stm32-dsi: Handle data-lanes in DSI port node dt-bindings: timer: Add power-domains for TI timer-dm on K3 dt: Add a check for undocumented compatible strings in kernel kbuild: take into account DT_SCHEMA_FILES changes while checking dtbs dt-bindings: interrupt-controller: migrate MIPS CPU interrupt controller text bindings to YAML dt-bindings: i2c: migrate mt7621 text bindings to YAML dt-bindings: power: gpcv2: correct patternProperties dt-bindings: virtio: Convert virtio,pci-iommu to DT schema dt-bindings: timer: arm,arch_timer: Allow dual compatible string dt-bindings: arm: cpus: Add kryo240 compatible dt-bindings: display: bridge: nxp,tda998x: Convert to json-schema dt-bindings: nvmem: u-boot,env: add basic NVMEM cells dt-bindings: remoteproc: qcom,adsp: enforce smd-edge schema ...
2022-10-10Merge tag 'kbuild-v6.1' of ↵Linus Torvalds22-421/+359
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - Remove potentially incomplete targets when Kbuid is interrupted by SIGINT etc in case GNU Make may miss to do that when stderr is piped to another program. - Rewrite the single target build so it works more correctly. - Fix rpm-pkg builds with V=1. - List top-level subdirectories in ./Kbuild. - Ignore auto-generated __kstrtab_* and __kstrtabns_* symbols in kallsyms. - Avoid two different modules in lib/zstd/ having shared code, which potentially causes building the common code as build-in and modular back-and-forth. - Unify two modpost invocations to optimize the build process. - Remove head-y syntax in favor of linker scripts for placing particular sections in the head of vmlinux. - Bump the minimal GNU Make version to 3.82. - Clean up misc Makefiles and scripts. * tag 'kbuild-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (41 commits) docs: bump minimal GNU Make version to 3.82 ia64: simplify esi object addition in Makefile Revert "kbuild: Check if linker supports the -X option" kbuild: rebuild .vmlinux.export.o when its prerequisite is updated kbuild: move modules.builtin(.modinfo) rules to Makefile.vmlinux_o zstd: Fixing mixed module-builtin objects kallsyms: ignore __kstrtab_* and __kstrtabns_* symbols kallsyms: take the input file instead of reading stdin kallsyms: drop duplicated ignore patterns from kallsyms.c kbuild: reuse mksysmap output for kallsyms mksysmap: update comment about __crc_* kbuild: remove head-y syntax kbuild: use obj-y instead extra-y for objects placed at the head kbuild: hide error checker logs for V=1 builds kbuild: re-run modpost when it is updated kbuild: unify two modpost invocations kbuild: move vmlinux.o rule to the top Makefile kbuild: move .vmlinux.objs rule to Makefile.modpost kbuild: list sub-directories in ./Kbuild Makefile.compiler: replace cc-ifversion with compiler-specific macros ...
2022-10-04Merge tag 'net-next-6.1' of ↵Linus Torvalds1-7/+71
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Introduce and use a single page frag cache for allocating small skb heads, clawing back the 10-20% performance regression in UDP flood test from previous fixes. - Run packets which already went thru HW coalescing thru SW GRO. This significantly improves TCP segment coalescing and simplifies deployments as different workloads benefit from HW or SW GRO. - Shrink the size of the base zero-copy send structure. - Move TCP init under a new slow / sleepable version of DO_ONCE(). BPF: - Add BPF-specific, any-context-safe memory allocator. - Add helpers/kfuncs for PKCS#7 signature verification from BPF programs. - Define a new map type and related helpers for user space -> kernel communication over a ring buffer (BPF_MAP_TYPE_USER_RINGBUF). - Allow targeting BPF iterators to loop through resources of one task/thread. - Add ability to call selected destructive functions. Expose crash_kexec() to allow BPF to trigger a kernel dump. Use CAP_SYS_BOOT check on the loading process to judge permissions. - Enable BPF to collect custom hierarchical cgroup stats efficiently by integrating with the rstat framework. - Support struct arguments for trampoline based programs. Only structs with size <= 16B and x86 are supported. - Invoke cgroup/connect{4,6} programs for unprivileged ICMP ping sockets (instead of just TCP and UDP sockets). - Add a helper for accessing CLOCK_TAI for time sensitive network related programs. - Support accessing network tunnel metadata's flags. - Make TCP SYN ACK RTO tunable by BPF programs with TCP Fast Open. - Add support for writing to Netfilter's nf_conn:mark. Protocols: - WiFi: more Extremely High Throughput (EHT) and Multi-Link Operation (MLO) work (802.11be, WiFi 7). - vsock: improve support for SO_RCVLOWAT. - SMC: support SO_REUSEPORT. - Netlink: define and document how to use netlink in a "modern" way. Support reporting missing attributes via extended ACK. - IPSec: support collect metadata mode for xfrm interfaces. - TCPv6: send consistent autoflowlabel in SYN_RECV state and RST packets. - TCP: introduce optional per-netns connection hash table to allow better isolation between namespaces (opt-in, at the cost of memory and cache pressure). - MPTCP: support TCP_FASTOPEN_CONNECT. - Add NEXT-C-SID support in Segment Routing (SRv6) End behavior. - Adjust IP_UNICAST_IF sockopt behavior for connected UDP sockets. - Open vSwitch: - Allow specifying ifindex of new interfaces. - Allow conntrack and metering in non-initial user namespace. - TLS: support the Korean ARIA-GCM crypto algorithm. - Remove DECnet support. Driver API: - Allow selecting the conduit interface used by each port in DSA switches, at runtime. - Ethernet Power Sourcing Equipment and Power Device support. - Add tc-taprio support for queueMaxSDU parameter, i.e. setting per traffic class max frame size for time-based packet schedules. - Support PHY rate matching - adapting between differing host-side and link-side speeds. - Introduce QUSGMII PHY mode and 1000BASE-KX interface mode. - Validate OF (device tree) nodes for DSA shared ports; make phylink-related properties mandatory on DSA and CPU ports. Enforcing more uniformity should allow transitioning to phylink. - Require that flash component name used during update matches one of the components for which version is reported by info_get(). - Remove "weight" argument from driver-facing NAPI API as much as possible. It's one of those magic knobs which seemed like a good idea at the time but is too indirect to use in practice. - Support offload of TLS connections with 256 bit keys. New hardware / drivers: - Ethernet: - Microchip KSZ9896 6-port Gigabit Ethernet Switch - Renesas Ethernet AVB (EtherAVB-IF) Gen4 SoCs - Analog Devices ADIN1110 and ADIN2111 industrial single pair Ethernet (10BASE-T1L) MAC+PHY. - Rockchip RV1126 Gigabit Ethernet (a version of stmmac IP). - Ethernet SFPs / modules: - RollBall / Hilink / Turris 10G copper SFPs - HALNy GPON module - WiFi: - CYW43439 SDIO chipset (brcmfmac) - CYW89459 PCIe chipset (brcmfmac) - BCM4378 on Apple platforms (brcmfmac) Drivers: - CAN: - gs_usb: HW timestamp support - Ethernet PHYs: - lan8814: cable diagnostics - Ethernet NICs: - Intel (100G): - implement control of FCS/CRC stripping - port splitting via devlink - L2TPv3 filtering offload - nVidia/Mellanox: - tunnel offload for sub-functions - MACSec offload, w/ Extended packet number and replay window offload - significantly restructure, and optimize the AF_XDP support, align the behavior with other vendors - Huawei: - configuring DSCP map for traffic class selection - querying standard FEC statistics - querying SerDes lane number via ethtool - Marvell/Cavium: - egress priority flow control - MACSec offload - AMD/SolarFlare: - PTP over IPv6 and raw Ethernet - small / embedded: - ax88772: convert to phylink (to support SFP cages) - altera: tse: convert to phylink - ftgmac100: support fixed link - enetc: standard Ethtool counters - macb: ZynqMP SGMII dynamic configuration support - tsnep: support multi-queue and use page pool - lan743x: Rx IP & TCP checksum offload - igc: add xdp frags support to ndo_xdp_xmit - Ethernet high-speed switches: - Marvell (prestera): - support SPAN port features (traffic mirroring) - nexthop object offloading - Microchip (sparx5): - multicast forwarding offload - QoS queuing offload (tc-mqprio, tc-tbf, tc-ets) - Ethernet embedded switches: - Marvell (mv88e6xxx): - support RGMII cmode - NXP (felix): - standardized ethtool counters - Microchip (lan966x): - QoS queuing offload (tc-mqprio, tc-tbf, tc-cbs, tc-ets) - traffic policing and mirroring - link aggregation / bonding offload - QUSGMII PHY mode support - Qualcomm 802.11ax WiFi (ath11k): - cold boot calibration support on WCN6750 - support to connect to a non-transmit MBSSID AP profile - enable remain-on-channel support on WCN6750 - Wake-on-WLAN support for WCN6750 - support to provide transmit power from firmware via nl80211 - support to get power save duration for each client - spectral scan support for 160 MHz - MediaTek WiFi (mt76): - WiFi-to-Ethernet bridging offload for MT7986 chips - RealTek WiFi (rtw89): - P2P support" * tag 'net-next-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1864 commits) eth: pse: add missing static inlines once: rename _SLOW to _SLEEPABLE net: pse-pd: add regulator based PSE driver dt-bindings: net: pse-dt: add bindings for regulator based PoDL PSE controller ethtool: add interface to interact with Ethernet Power Equipment net: mdiobus: search for PSE nodes by parsing PHY nodes. net: mdiobus: fwnode_mdiobus_register_phy() rework error handling net: add framework to support Ethernet PSE and PDs devices dt-bindings: net: phy: add PoDL PSE property net: marvell: prestera: Propagate nh state from hw to kernel net: marvell: prestera: Add neighbour cache accounting net: marvell: prestera: add stub handler neighbour events net: marvell: prestera: Add heplers to interact with fib_notifier_info net: marvell: prestera: Add length macros for prestera_ip_addr net: marvell: prestera: add delayed wq and flush wq on deinit net: marvell: prestera: Add strict cleanup of fib arbiter net: marvell: prestera: Add cleanup of allocated fib_nodes net: marvell: prestera: Add router nexthops ABI eth: octeon: fix build after netif_napi_add() changes net/mlx5: E-Switch, Return EBUSY if can't get mode lock ...
2022-10-03Merge tag 'selinux-pr-20221003' of ↵Linus Torvalds1-3/+2
git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux Pull SELinux updates from Paul Moore: "Six SELinux patches, all are simple and easily understood, but a list of the highlights is below: - Use 'grep -E' instead of 'egrep' in the SELinux policy install script. Fun fact, this seems to be GregKH's *second* dedicated SELinux patch since we transitioned to git (ignoring merges, the SPDX stuff, and a trivial fs reference removal when lustre was yanked); the first was back in 2011 when selinuxfs was placed in /sys/fs/selinux. Oh, the memories ... - Convert the SELinux policy boolean values to use signed integer types throughout the SELinux kernel code. Prior to this we were using a mix of signed and unsigned integers which was probably okay in this particular case, but it is definitely not a good idea in general. - Remove a reference to the SELinux runtime disable functionality in /etc/selinux/config as we are in the process of deprecating that. See [1] for more background on this if you missed the previous notes on the deprecation. - Minor cleanups: remove unneeded variables and function parameter constification" Link: https://github.com/SELinuxProject/selinux-kernel/wiki/DEPRECATE-runtime-disable [1] * tag 'selinux-pr-20221003' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux: selinux: remove runtime disable message in the install_policy.sh script selinux: use "grep -E" instead of "egrep" selinux: remove the unneeded result variable selinux: declare read-only parameters const selinux: use int arrays for boolean values selinux: remove an unneeded variable in sel_make_class_dir_entries()
2022-10-03Merge tag 'hardening-v6.1-rc1' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull kernel hardening updates from Kees Cook: "Most of the collected changes here are fixes across the tree for various hardening features (details noted below). The most notable new feature here is the addition of the memcpy() overflow warning (under CONFIG_FORTIFY_SOURCE), which is the next step on the path to killing the common class of "trivially detectable" buffer overflow conditions (i.e. on arrays with sizes known at compile time) that have resulted in many exploitable vulnerabilities over the years (e.g. BleedingTooth). This feature is expected to still have some undiscovered false positives. It's been in -next for a full development cycle and all the reported false positives have been fixed in their respective trees. All the known-bad code patterns we could find with Coccinelle are also either fixed in their respective trees or in flight. The commit message in commit 54d9469bc515 ("fortify: Add run-time WARN for cross-field memcpy()") for the feature has extensive details, but I'll repeat here that this is a warning _only_, and is not intended to actually block overflows (yet). The many patches fixing array sizes and struct members have been landing for several years now, and we're finally able to turn this on to find any remaining stragglers. Summary: Various fixes across several hardening areas: - loadpin: Fix verity target enforcement (Matthias Kaehlcke). - zero-call-used-regs: Add missing clobbers in paravirt (Bill Wendling). - CFI: clean up sparc function pointer type mismatches (Bart Van Assche). - Clang: Adjust compiler flag detection for various Clang changes (Sami Tolvanen, Kees Cook). - fortify: Fix warnings in arch-specific code in sh, ARM, and xen. Improvements to existing features: - testing: improve overflow KUnit test, introduce fortify KUnit test, add more coverage to LKDTM tests (Bart Van Assche, Kees Cook). - overflow: Relax overflow type checking for wider utility. New features: - string: Introduce strtomem() and strtomem_pad() to fill a gap in strncpy() replacement needs. - um: Enable FORTIFY_SOURCE support. - fortify: Enable run-time struct member memcpy() overflow warning" * tag 'hardening-v6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (27 commits) Makefile.extrawarn: Move -Wcast-function-type-strict to W=1 hardening: Remove Clang's enable flag for -ftrivial-auto-var-init=zero sparc: Unbreak the build x86/paravirt: add extra clobbers with ZERO_CALL_USED_REGS enabled x86/paravirt: clean up typos and grammaros fortify: Convert to struct vs member helpers fortify: Explicitly check bounds are compile-time constants x86/entry: Work around Clang __bdos() bug ARM: decompressor: Include .data.rel.ro.local fortify: Adjust KUnit test for modular build sh: machvec: Use char[] for section boundaries kunit/memcpy: Avoid pathological compile-time string size lib: Improve the is_signed_type() kunit test LoadPin: Require file with verity root digests to have a header dm: verity-loadpin: Only trust verity targets with enforcement LoadPin: Fix Kconfig doc about format of file with verity digests um: Enable FORTIFY_SOURCE lkdtm: Update tests for memcpy() run-time warnings fortify: Add run-time WARN for cross-field memcpy() fortify: Use SIZE_MAX instead of (size_t)-1 ...
2022-10-03Merge tag 'kcfi-v6.1-rc1' of ↵Linus Torvalds2-19/+5
git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull kcfi updates from Kees Cook: "This replaces the prior support for Clang's standard Control Flow Integrity (CFI) instrumentation, which has required a lot of special conditions (e.g. LTO) and work-arounds. The new implementation ("Kernel CFI") is specific to C, directly designed for the Linux kernel, and takes advantage of architectural features like x86's IBT. This series retains arm64 support and adds x86 support. GCC support is expected in the future[1], and additional "generic" architectural support is expected soon[2]. Summary: - treewide: Remove old CFI support details - arm64: Replace Clang CFI support with Clang KCFI support - x86: Introduce Clang KCFI support" Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107048 [1] Link: https://github.com/samitolvanen/llvm-project/commits/kcfi_generic [2] * tag 'kcfi-v6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (22 commits) x86: Add support for CONFIG_CFI_CLANG x86/purgatory: Disable CFI x86: Add types to indirectly called assembly functions x86/tools/relocs: Ignore __kcfi_typeid_ relocations kallsyms: Drop CONFIG_CFI_CLANG workarounds objtool: Disable CFI warnings objtool: Preserve special st_shndx indexes in elf_update_symbol treewide: Drop __cficanonical treewide: Drop WARN_ON_FUNCTION_MISMATCH treewide: Drop function_nocfi init: Drop __nocfi from __init arm64: Drop unneeded __nocfi attributes arm64: Add CFI error handling arm64: Add types to indirect called assembly functions psci: Fix the function type for psci_initcall_t lkdtm: Emit an indirect call for CFI tests cfi: Add type helper macros cfi: Switch to -fsanitize=kcfi cfi: Drop __CFI_ADDRESSABLE cfi: Remove CONFIG_CFI_CLANG_SHADOW ...
2022-10-03Merge tag 'rust-v6.1-rc1' of https://github.com/Rust-for-Linux/linuxLinus Torvalds19-26/+773
Pull Rust introductory support from Kees Cook: "The tree has a recent base, but has fundamentally been in linux-next for a year and a half[1]. It's been updated based on feedback from the Kernel Maintainer's Summit, and to gain recent Reviewed-by: tags. Miguel is the primary maintainer, with me helping where needed/wanted. Our plan is for the tree to switch to the standard non-rebasing practice once this initial infrastructure series lands. The contents are the absolute minimum to get Rust code building in the kernel, with many more interfaces[2] (and drivers - NVMe[3], 9p[4], M1 GPU[5]) on the way. The initial support of Rust-for-Linux comes in roughly 4 areas: - Kernel internals (kallsyms expansion for Rust symbols, %pA format) - Kbuild infrastructure (Rust build rules and support scripts) - Rust crates and bindings for initial minimum viable build - Rust kernel documentation and samples Rust support has been in linux-next for a year and a half now, and the short log doesn't do justice to the number of people who have contributed both to the Linux kernel side but also to the upstream Rust side to support the kernel's needs. Thanks to these 173 people, and many more, who have been involved in all kinds of ways: Miguel Ojeda, Wedson Almeida Filho, Alex Gaynor, Boqun Feng, Gary Guo, Björn Roy Baron, Andreas Hindborg, Adam Bratschi-Kaye, Benno Lossin, Maciej Falkowski, Finn Behrens, Sven Van Asbroeck, Asahi Lina, FUJITA Tomonori, John Baublitz, Wei Liu, Geoffrey Thomas, Philip Herron, Arthur Cohen, David Faust, Antoni Boucher, Philip Li, Yujie Liu, Jonathan Corbet, Greg Kroah-Hartman, Paul E. McKenney, Josh Triplett, Kent Overstreet, David Gow, Alice Ryhl, Robin Randhawa, Kees Cook, Nick Desaulniers, Matthew Wilcox, Linus Walleij, Joe Perches, Michael Ellerman, Petr Mladek, Masahiro Yamada, Arnaldo Carvalho de Melo, Andrii Nakryiko, Konstantin Shelekhin, Rasmus Villemoes, Konstantin Ryabitsev, Stephen Rothwell, Andy Shevchenko, Sergey Senozhatsky, John Paul Adrian Glaubitz, David Laight, Nathan Chancellor, Jonathan Cameron, Daniel Latypov, Shuah Khan, Brendan Higgins, Julia Lawall, Laurent Pinchart, Geert Uytterhoeven, Akira Yokosawa, Pavel Machek, David S. Miller, John Hawley, James Bottomley, Arnd Bergmann, Christian Brauner, Dan Robertson, Nicholas Piggin, Zhouyi Zhou, Elena Zannoni, Jose E. Marchesi, Leon Romanovsky, Will Deacon, Richard Weinberger, Randy Dunlap, Paolo Bonzini, Roland Dreier, Mark Brown, Sasha Levin, Ted Ts'o, Steven Rostedt, Jarkko Sakkinen, Michal Kubecek, Marco Elver, Al Viro, Keith Busch, Johannes Berg, Jan Kara, David Sterba, Connor Kuehl, Andy Lutomirski, Andrew Lunn, Alexandre Belloni, Peter Zijlstra, Russell King, Eric W. Biederman, Willy Tarreau, Christoph Hellwig, Emilio Cobos Álvarez, Christian Poveda, Mark Rousskov, John Ericson, TennyZhuang, Xuanwo, Daniel Paoliello, Manish Goregaokar, comex, Josh Stone, Stephan Sokolow, Philipp Krones, Guillaume Gomez, Joshua Nelson, Mats Larsen, Marc Poulhiès, Samantha Miller, Esteban Blanc, Martin Schmidt, Martin Rodriguez Reboredo, Daniel Xu, Viresh Kumar, Bartosz Golaszewski, Vegard Nossum, Milan Landaverde, Dariusz Sosnowski, Yuki Okushi, Matthew Bakhtiari, Wu XiangCheng, Tiago Lam, Boris-Chengbiao Zhou, Sumera Priyadarsini, Viktor Garske, Niklas Mohrin, Nándor István Krácser, Morgan Bartlett, Miguel Cano, Léo Lanteri Thauvin, Julian Merkle, Andreas Reindl, Jiapeng Chong, Fox Chen, Douglas Su, Antonio Terceiro, SeongJae Park, Sergio González Collado, Ngo Iok Ui (Wu Yu Wei), Joshua Abraham, Milan, Daniel Kolsoi, ahomescu, Manas, Luis Gerhorst, Li Hongyu, Philipp Gesang, Russell Currey, Jalil David Salamé Messina, Jon Olson, Raghvender, Angelos, Kaviraj Kanagaraj, Paul Römer, Sladyn Nunes, Mauro Baladés, Hsiang-Cheng Yang, Abhik Jain, Hongyu Li, Sean Nash, Yuheng Su, Peng Hao, Anhad Singh, Roel Kluin, Sara Saa, Geert Stappers, Garrett LeSage, IFo Hancroft, and Linus Torvalds" Link: https://lwn.net/Articles/849849/ [1] Link: https://github.com/Rust-for-Linux/linux/commits/rust [2] Link: https://github.com/metaspace/rust-linux/commit/d88c3744d6cbdf11767e08bad56cbfb67c4c96d0 [3] Link: https://github.com/wedsonaf/linux/commit/9367032607f7670de0ba1537cf09ab0f4365a338 [4] Link: https://github.com/AsahiLinux/linux/commits/gpu/rust-wip [5] * tag 'rust-v6.1-rc1' of https://github.com/Rust-for-Linux/linux: (27 commits) MAINTAINERS: Rust samples: add first Rust examples x86: enable initial Rust support docs: add Rust documentation Kbuild: add Rust support rust: add `.rustfmt.toml` scripts: add `is_rust_module.sh` scripts: add `rust_is_available.sh` scripts: add `generate_rust_target.rs` scripts: add `generate_rust_analyzer.py` scripts: decode_stacktrace: demangle Rust symbols scripts: checkpatch: enable language-independent checks for Rust scripts: checkpatch: diagnose uses of `%pA` in the C side as errors vsprintf: add new `%pA` format specifier rust: export generated symbols rust: add `kernel` crate rust: add `bindings` crate rust: add `macros` crate rust: add `compiler_builtins` crate rust: adapt `alloc` crate to the kernel ...
2022-10-03checkpatch: warn for non-standard fixes tag styleNiklas Söderlund1-0/+44
Add a warning for fixes tags that does not follow community conventions. Link: https://lkml.kernel.org/r/20220914100255.1048460-1-niklas.soderlund@corigine.com Signed-off-by: Niklas Söderlund <niklas.soderlund@corigine.com> Reviewed-by: Simon Horman <simon.horman@corigine.com> Reviewed-by: Louis Peens <louis.peens@corigine.com> Reviewed-by: Philippe Schenker <philippe.schenker@toradex.com> Acked-by: Dwaipayan Ray <dwaipayanray1@gmail.com> Reviewed-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Acked-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-10-03kmsan: add KMSAN runtime coreAlexander Potapenko2-0/+17
For each memory location KernelMemorySanitizer maintains two types of metadata: 1. The so-called shadow of that location - а byte:byte mapping describing whether or not individual bits of memory are initialized (shadow is 0) or not (shadow is 1). 2. The origins of that location - а 4-byte:4-byte mapping containing 4-byte IDs of the stack traces where uninitialized values were created. Each struct page now contains pointers to two struct pages holding KMSAN metadata (shadow and origins) for the original struct page. Utility routines in mm/kmsan/core.c and mm/kmsan/shadow.c handle the metadata creation, addressing, copying and checking. mm/kmsan/report.c performs error reporting in the cases an uninitialized value is used in a way that leads to undefined behavior. KMSAN compiler instrumentation is responsible for tracking the metadata along with the kernel memory. mm/kmsan/instrumentation.c provides the implementation for instrumentation hooks that are called from files compiled with -fsanitize=kernel-memory. To aid parameter passing (also done at instrumentation level), each task_struct now contains a struct kmsan_task_state used to track the metadata of function parameters and return values for that task. Finally, this patch provides CONFIG_KMSAN that enables KMSAN, and declares CFLAGS_KMSAN, which are applied to files compiled with KMSAN. The KMSAN_SANITIZE:=n Makefile directive can be used to completely disable KMSAN instrumentation for certain files. Similarly, KMSAN_ENABLE_CHECKS:=n disables KMSAN checks and makes newly created stack memory initialized. Users can also use functions from include/linux/kmsan-checks.h to mark certain memory regions as uninitialized or initialized (this is called "poisoning" and "unpoisoning") or check that a particular region is initialized. Link: https://lkml.kernel.org/r/20220915150417.722975-12-glider@google.com Signed-off-by: Alexander Potapenko <glider@google.com> Acked-by: Marco Elver <elver@google.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Andrey Konovalov <andreyknvl@google.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Christoph Hellwig <hch@lst.de> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Eric Biggers <ebiggers@google.com> Cc: Eric Biggers <ebiggers@kernel.org> Cc: Eric Dumazet <edumazet@google.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Ilya Leoshkevich <iii@linux.ibm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Kees Cook <keescook@chromium.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vegard Nossum <vegard.nossum@oracle.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-10-03Merge tag 'docs-6.1' of git://git.lwn.net/linuxLinus Torvalds1-4/+4
Pull documentation updates from Jonathan Corbet: "There's not a huge amount of activity in the docs tree this time around, but a few significant changes even so: - A complete rewriting of the top-level index.rst file, which mostly reflects itself in a redone top page in the HTML-rendered docs. The hope is that the new organization will be a friendlier starting point for both users and developers. - Some math-rendering improvements. - A coding-style.rst update on the use of BUG() and WARN() - A big maintainer-PHP guide update. - Some code-of-conduct updates - More Chinese translation work Plus the usual pile of typo fixes, corrections, and updates" * tag 'docs-6.1' of git://git.lwn.net/linux: (66 commits) checkpatch: warn on usage of VM_BUG_ON() and other BUG variants coding-style.rst: document BUG() and WARN() rules ("do not crash the kernel") Documentation: devres: add missing IO helper Documentation: devres: update IRQ helper Documentation/mm: modify page_referenced to folio_referenced Documentation/CoC: Reflect current CoC interpretation and practices docs/doc-guide: Add documentation on SPHINX_IMGMATH docs: process/5.Posting.rst: clarify use of Reported-by: tag docs, kprobes: Fix the wrong location of Kprobes docs: add a man-pages link to the front page docs: put atomic*.txt and memory-barriers.txt into the core-api book docs: move asm-annotations.rst into core-api docs: remove some index.rst cruft docs: reconfigure the HTML left column docs: Rewrite the front page docs: promote the title of process/index.rst Documentation: devres: add missing SPI helper Documentation: devres: add missing PINCTRL helpers docs: hugetlbpage.rst: fix a typo of hugepage size docs/zh_CN: Add new translation of admin-guide/bootconfig.rst ...
2022-10-03kbuild: rebuild .vmlinux.export.o when its prerequisite is updatedMasahiro Yamada2-6/+20
When include/linux/export-internal.h is updated, .vmlinux.export.o must be rebuilt, but it does not happen because its rule is hidden behind scripts/link-vmlinux.sh. Move it out of the shell script, so that Make can see the dependency between vmlinux and .vmlinux.export.o. Move the vmlinux rule to scripts/Makefile.vmlinux. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-10-03kbuild: move modules.builtin(.modinfo) rules to Makefile.vmlinux_oMasahiro Yamada2-8/+25
Do not build modules.builtin(.modinfo) as a side-effect of vmlinux. There are no good reason to rebuild them just because any of vmlinux's prerequistes (vmlinux.lds, .vmlinux.export.c, etc.) has been updated. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-10-03kallsyms: ignore __kstrtab_* and __kstrtabns_* symbolsMasahiro Yamada1-0/+4
Every EXPORT_SYMBOL creates __kstrtab_* and __kstrtabns_*, which consumes 15-20% of the kallsyms entries. For example, on the system built from the x86_64 defconfig, $ cat /proc/kallsyms | wc 129527 388581 5685465 $ cat /proc/kallsyms | grep __kstrtab | wc 23489 70467 1187932 We already ignore __crc_* symbols populated by EXPORT_SYMBOL, so it should be fine to ignore __kstrtab_* and __kstrtabns_* as well. This makes vmlinux a bit smaller. $ size vmlinux.before vmlinux.after text data bss dec hex filename 22785374 8559694 1413328 32758396 1f3da7c vmlinux.before 22785374 8137806 1413328 32336508 1ed6a7c vmlinux.after Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-10-02kallsyms: take the input file instead of reading stdinMasahiro Yamada2-19/+34
This gets rid of the pipe operator connected with 'cat'. Also use getopt_long() to parse the command line. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-10-02kallsyms: drop duplicated ignore patterns from kallsyms.cMasahiro Yamada2-4/+13
Now that kallsyms.c parses the output from mksysmap, some symbols have already been dropped. Move comments to scripts/mksysmap. Also, make the grep command readable. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-10-02kbuild: reuse mksysmap output for kallsymsMasahiro Yamada1-6/+5
scripts/mksysmap internally runs ${NM} (dropping some symbols). When CONFIG_KALLSYMS=y, mksysmap creates .tmp_System.map, but it is almost the same as the output from the ${NM} invocation in kallsyms(). It is true scripts/mksysmap drops some symbols, but scripts/kallsyms.c ignores more anyway. Keep the mksysmap output as *.syms, and reuse it for kallsyms and 'cmp -s'. It saves one ${NM} invocation. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-10-02mksysmap: update comment about __crc_*Masahiro Yamada1-4/+4
Since commit 7b4537199a4a ("kbuild: link symbol CRCs at final link, removing CONFIG_MODULE_REL_CRCS"), __crc_* symbols never become absolute. Keep ignoring __crc_*, but update the comment. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-10-02kbuild: remove head-y syntaxMasahiro Yamada1-0/+53
Kbuild puts the objects listed in head-y at the head of vmlinux. Conventionally, we do this for head*.S, which contains the kernel entry point. A counter approach is to control the section order by the linker script. Actually, the code marked as __HEAD goes into the ".head.text" section, which is placed before the normal ".text" section. I do not know if both of them are needed. From the build system perspective, head-y is not mandatory. If you can achieve the proper code placement by the linker script only, it would be cleaner. I collected the current head-y objects into head-object-list.txt. It is a whitelist. My hope is it will be reduced in the long run. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
2022-10-02kbuild: use obj-y instead extra-y for objects placed at the headMasahiro Yamada4-30/+10
The objects placed at the head of vmlinux need special treatments: - arch/$(SRCARCH)/Makefile adds them to head-y in order to place them before other archives in the linker command line. - arch/$(SRCARCH)/kernel/Makefile adds them to extra-y instead of obj-y to avoid them going into built-in.a. This commit gets rid of the latter. Create vmlinux.a to collect all the objects that are unconditionally linked to vmlinux. The objects listed in head-y are moved to the head of vmlinux.a by using 'ar m'. With this, arch/$(SRCARCH)/kernel/Makefile can consistently use obj-y for builtin objects. There is no *.o that is directly linked to vmlinux. Drop unneeded code in scripts/clang-tools/gen_compile_commands.py. $(AR) mPi needs 'T' to workaround the llvm-ar bug. The fix was suggested by Nathan Chancellor [1]. [1]: https://lore.kernel.org/llvm/YyjjT5gQ2hGMH0ni@dev-arch.thelio-3990X/ Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
2022-10-01Makefile.extrawarn: Move -Wcast-function-type-strict to W=1Sami Tolvanen1-0/+1
We enable -Wcast-function-type globally in the kernel to warn about mismatching types in function pointer casts. Compilers currently warn only about ABI incompability with this flag, but Clang 16 will enable a stricter version of the check by default that checks for an exact type match. This will be very noisy in the kernel, so disable -Wcast-function-type-strict without W=1 until the new warnings have been addressed. Cc: stable@vger.kernel.org Link: https://reviews.llvm.org/D134831 Link: https://github.com/ClangBuiltLinux/linux/issues/1724 Suggested-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20220930203310.4010564-1-samitolvanen@google.com
2022-09-29Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski4-18/+10
No conflicts. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-09-29checkpatch: warn on usage of VM_BUG_ON() and other BUG variantsDavid Hildenbrand1-3/+3
checkpatch does not point out that VM_BUG_ON() and friends should be avoided, however, Linus notes: VM_BUG_ON() has the exact same semantics as BUG_ON. It is literally no different, the only difference is "we can make the code smaller because these are less important". [1] So let's warn on VM_BUG_ON() and other BUG variants as well. While at it, make it clearer that the kernel really shouldn't be crashed. As there are some subsystem BUG macros that actually don't end up crashing the kernel -- for example, KVM_BUG_ON() -- exclude these manually. [1] https://lore.kernel.org/r/CAHk-=wg40EAZofO16Eviaj7mfqDhZ2gVEbvfsMf6gYzspRjYvw@mail.gmail.com Signed-off-by: David Hildenbrand <david@redhat.com> Link: https://lore.kernel.org/r/20220923113426.52871-3-david@redhat.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-29docs: move asm-annotations.rst into core-apiJonathan Corbet1-1/+1
This one file should not really be in the top-level documentation directory. core-api/ may not be a perfect fit but seems to be best, so move it there. Adjust a couple of internal document references to make them location-independent, and point checkpatch.pl at the new location. Cc: Jiri Slaby <jirislaby@kernel.org> Cc: Joe Perches <joe@perches.com> Reviewed-by: David Vernet <void@manifault.com> Acked-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Acked-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20220927160559.97154-6-corbet@lwn.net Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-29kbuild: re-run modpost when it is updatedMasahiro Yamada1-6/+8
Modpost generates .vmlinux.export.c and *.mod.c, which are prerequisites of vmlinux and modules, respectively. The modpost stage should be re-run when the modpost code is updated. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-09-29kbuild: unify two modpost invocationsMasahiro Yamada3-69/+29
Currently, modpost is executed twice; first for vmlinux, second for modules. This commit merges them. Current build flow ================== 1) build obj-y and obj-m objects 2) link vmlinux.o 3) modpost for vmlinux 4) link vmlinux 5) modpost for modules 6) link modules (*.ko) The build steps 1) through 6) are serialized, that is, modules are built after vmlinux. You do not get benefits of parallel builds when scripts/link-vmlinux.sh is being run. New build flow ============== 1) build obj-y and obj-m objects 2) link vmlinux.o 3) modpost for vmlinux and modules 4a) link vmlinux 4b) link modules (*.ko) In the new build flow, modpost is invoked just once. vmlinux and modules are built in parallel. One exception is CONFIG_DEBUG_INFO_BTF_MODULES=y, where modules depend on vmlinux. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
2022-09-29kbuild: move vmlinux.o rule to the top MakefileMasahiro Yamada1-3/+0
Move the build rules of vmlinux.o out of scripts/link-vmlinux.sh to clearly separate 1) pre-modpost, 2) modpost, 3) post-modpost stages. This will make further refactoring possible. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
2022-09-29kbuild: move .vmlinux.objs rule to Makefile.modpostMasahiro Yamada2-20/+28
.vmlinux.objs is used by modpost, so scripts/Makefile.modpost is a better place to generate it. It is used only when CONFIG_MODVERSIONS=y. It should be guarded by "ifdef CONFIG_MODVERSIONS". Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
2022-09-29kbuild: list sub-directories in ./KbuildMasahiro Yamada1-0/+2
Use the ordinary obj-y syntax to list subdirectories. Note1: Previously, the link order of lib-y depended on CONFIG_MODULES; lib-y was linked before drivers-y when CONFIG_MODULES=y, otherwise after drivers-y. This was a bug of commit 7273ad2b08f8 ("kbuild: link lib-y objects to vmlinux forcibly when CONFIG_MODULES=y"), but it was not a big deal after all. Now, all objects listed in lib-y are linked last, irrespective of CONFIG_MODULES. Note2: Finally, the single target build in arch/*/lib/ works correctly. There was a bug report about this. [1] $ make ARCH=arm arch/arm/lib/findbit.o CALL scripts/checksyscalls.sh AS arch/arm/lib/findbit.o [1]: https://lore.kernel.org/linux-kbuild/YvUQOwL6lD4%2F5%2FU6@shell.armlinux.org.uk/ Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
2022-09-29Makefile.compiler: replace cc-ifversion with compiler-specific macrosNick Desaulniers2-5/+9
cc-ifversion is GCC specific. Replace it with compiler specific variants. Update the users of cc-ifversion to use these new macros. Link: https://github.com/ClangBuiltLinux/linux/issues/350 Link: https://lore.kernel.org/llvm/CAGG=3QWSAUakO42kubrCap8fp-gm1ERJJAYXTnP1iHk_wrH=BQ@mail.gmail.com/ Suggested-by: Bill Wendling <morbo@google.com> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-09-29kbuild: rpm-pkg: fix breakage when V=1 is usedJanis Schoetterl-Glausch1-2/+2
Doing make V=1 binrpm-pkg results in: Executing(%install): /bin/sh -e /var/tmp/rpm-tmp.EgV6qJ + umask 022 + cd . + /bin/rm -rf /home/scgl/rpmbuild/BUILDROOT/kernel-6.0.0_rc5+-1.s390x + /bin/mkdir -p /home/scgl/rpmbuild/BUILDROOT + /bin/mkdir /home/scgl/rpmbuild/BUILDROOT/kernel-6.0.0_rc5+-1.s390x + mkdir -p /home/scgl/rpmbuild/BUILDROOT/kernel-6.0.0_rc5+-1.s390x/boot + make -f ./Makefile image_name + cp test -e include/generated/autoconf.h -a -e include/config/auto.conf || ( \ echo >&2; \ echo >&2 " ERROR: Kernel configuration is invalid."; \ echo >&2 " include/generated/autoconf.h or include/config/auto.conf are missing.";\ echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ echo >&2 ; \ /bin/false) arch/s390/boot/bzImage /home/scgl/rpmbuild/BUILDROOT/kernel-6.0.0_rc5+-1.s390x/boot/vmlinuz-6.0.0-rc5+ cp: invalid option -- 'e' Try 'cp --help' for more information. error: Bad exit status from /var/tmp/rpm-tmp.EgV6qJ (%install) Because the make call to get the image name is verbose and prints additional information. Fixes: 993bdde94547 ("kbuild: add image_name to no-sync-config-targets") Signed-off-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-09-29scripts: remove unused argument 'type'Zeng Heng1-3/+3
Remove unused function argument, and there is no logic changes. Signed-off-by: Zeng Heng <zengheng4@huawei.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-09-29Kconfig: remove sym_set_choice_valueZeng Heng2-6/+1
sym_set_choice_value could be removed and directly call sym_set_tristate_value instead. Signed-off-by: Zeng Heng <zengheng4@huawei.com> Suggested-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-09-29kbuild: use objtool-args-y to clean up objtool argumentsMasahiro Yamada2-26/+20
Based on Linus' patch. Refactor scripts/Makefile.vmlinux_o as well. Link: https://lore.kernel.org/lkml/CAHk-=wgjTMQgiKzBZTmb=uWGDEQxDdyF1+qxBkODYciuNsmwnw@mail.gmail.com/ Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Peter Zijlstra <peterz@infradead.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-09-29kbuild: fix and refactor single target buildMasahiro Yamada1-38/+16
The single target build has a subtle bug for the combination for an individual file and a subdirectory. [1] 'make kernel/fork.i' builds only kernel/fork.i $ make kernel/fork.i CALL scripts/checksyscalls.sh DESCEND objtool CPP kernel/fork.i [2] 'make kernel/' builds only under the kernel/ directory. $ make kernel/ CALL scripts/checksyscalls.sh DESCEND objtool CC kernel/fork.o CC kernel/exec_domain.o [snip] CC kernel/rseq.o AR kernel/built-in.a But, if you try to do [1] and [2] in a single command, you will get only [1] with a weird log: $ make kernel/fork.i kernel/ CALL scripts/checksyscalls.sh DESCEND objtool CPP kernel/fork.i make[2]: Nothing to be done for 'kernel/'. With 'make kernel/fork.i kernel/', you should get both [1] and [2]. Rewrite the single target build. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-09-29kbuild: rewrite check-local-export in sh/awkOwen Rafferty1-49/+48
Remove the bash build dependency for those who otherwise do not have it installed. This also provides a significant speedup: $ make defconfig $ make yes2modconfig ... $ find . -name "*.o" | grep -v vmlinux | wc 3169 3169 89615 $ export NM=nm $ time sh -c 'find . -name "*.o" | grep -v vmlinux | xargs -n1 ./scripts/check-local-export' Without patch: 0m15.90s real 0m12.17s user 0m05.28s system With patch: dash + nawk 0m02.16s real 0m02.92s user 0m00.34s system dash + busybox awk 0m02.36s real 0m03.36s user 0m00.34s system dash + gawk 0m02.07s real 0m03.26s user 0m00.32s system bash + gawk 0m03.55s real 0m05.00s user 0m00.54s system Signed-off-by: Owen Rafferty <owen@owenrafferty.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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