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openEuler Kernel SIG例会
by openEuler conference 18 Aug '22

18 Aug '22

您好！ Kernel SIG 邀请您参加 2022-08-19 14:00 召开的Zoom会议(自动录制) 会议主题：openEuler Kernel SIG例会会议内容： 1.arm64: add machine check safe support特性回合评审,PR78； 2.Add memory reliable feature特性回合评审,PR79；会议链接：https://us06web.zoom.us/j/88345524477?pwd=WHAvcmcza0JnY1JhekNVdUJzUE04UT09 会议纪要：https://etherpad.openeuler.org/p/Kernel-meetings 温馨提醒：建议接入会议后修改参会人的姓名，也可以使用您在gitee.com的ID 更多资讯尽在：https://openeuler.org/zh/ Hello! openEuler Kernel SIG invites you to attend the Zoom conference(auto recording) will be held at 2022-08-19 14:00, The subject of the conference is openEuler Kernel SIG例会, Summary: 1.arm64: add machine check safe support特性回合评审,PR78； 2.Add memory reliable feature特性回合评审,PR79； You can join the meeting at https://us06web.zoom.us/j/88345524477?pwd=WHAvcmcza0JnY1JhekNVdUJzUE04UT09. Add topics at https://etherpad.openeuler.org/p/Kernel-meetings. Note: You are advised to change the participant name after joining the conference or use your ID at gitee.com. More information: https://openeuler.org/en/

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[PATCH] Add description of openEuler kernel header format
by Zheng Zengkai 18 Aug '22

18 Aug '22

This patch list and descript typical openEuler kernel header format. Signed-off-by: Zheng Zengkai <zhengzengkai(a)huawei.com> --- openeuler_patch_header.lg | 178 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 178 insertions(+) create mode 100644 openeuler_patch_header.lg diff --git a/openeuler_patch_header.lg b/openeuler_patch_header.lg new file mode 100644 index 000000000000..a874d140cd1c --- /dev/null +++ b/openeuler_patch_header.lg @@ -0,0 +1,178 @@ +Patch format definition + +[M] stands for “mandatory” +[O] stands for “option” +$category can be: bug preparation, bugfix, perf, feature, doc, other… + +If category is feature, then we also need to add feature name like below: +category: feature +feature: YYY (the feature name) + +If the patch is related to gitee issue, then we need add the corresponding tag +like below. +for example: +bugzilla: https://gitee.com/openeuler/kernel/issues/I4OM1C + +Additional changelog should include at least one of the flollwing: +1) Why we should apply this patch +2) What real problem in product does this patch resolved +3) How could we reproduce this bug or how to test +4) Other useful information for help to understand this patch or problem + +The detail information is very useful for porting patch to another kenrel +branch. + +stable patch header format: + +origin patch title + +stable inclusion [M] +from $stable-version [M] +commit $id [M] +category: $category [M] +bugzilla: $gitee-issue-url [M] +CVE: $cve-id or NA [O] + +Reference: patch URLs + +additional changelog [O] + +------------------------------------------ + +original changelog + +Signed-off-by: $author $name(a)huawei.com [M] + +($stable-version would be stable-4.19.110, stable-4.19.111, etc… +$id would be stable commit) + +mainline patch header format: + +origin patch title + +mainline inclusion [M] +from $mainline-version [M] +commit $id [M] +category: $category [M] +bugzilla: $gitee-issue-url [M] +CVE: $cve-id or NA [M] + +Reference: patch URLs + +additional changelog [O] + +------------------------------------------- + +original changelog + +Signed-off-by: $author $name(a)huawei.com [M] + +($mainline-version could be mainline-5.5, mainline-5.6, etc…) + +HULK patch header format: + +origin patch title + +hulk inclusion [M] +category: $category [M] +bugzilla: $gitee-issue-url [M] +CVE: $cve-id or NA [M] + +------------------------------------------ + +changelog + +Signed-off-by: $author $name(a)huawei.com [M] + +distribution patch header format: + +origin patch title + +dist inclusion [M] +from $dist-version [M] +commit $id [O] +category: $category [O] +bugzilla: $gitee-issue-url [O] + +additional changelog [O] + +----------------------------------------- + +original changelog + +Signed-off-by: $author $name(a)huawei.com [M] + +($dist-version could be centos-7.5, centos-7.7, etc…) + +EulerOS patch header format: + +origin patch title + +euleros inclusion [M] +category: $category [M] +bugzilla: $gitee-issue-url [O] + +---------------------------------------- + +changelog + +Signed-off-by: $author $name(a)huawei.com [M] + +Driver patch header format: + +origin patch title + +driver inclusion [M] +category: $category [M] +bugzilla: $gitee-issue-url [O] + +additional changelog [O] + +--------------------------------------- + +original changelog + +Signed-off-by: $author $name(a)huawei.com [M] + +======== + +Examples + +mm: introduce memmap_alloc() to unify memory map allocation + +mainline inclusion +from mainline-v5.15-rc1 +commit c803b3c8b3b70f306ee6300bf8acdd70ffd1441a +category: bugfix +bugzilla: 186414, https://gitee.com/openeuler/kernel/issues/I5K7IY +CVE: NA + +Reference: +https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c803b3c8b3b70f306ee6300bf8acdd70ffd1441a + +-------------------------------- + +There are several places that allocate memory for the memory map: +alloc_node_mem_map() for FLATMEM, sparse_buffer_init() and +__populate_section_memmap() for SPARSEMEM. + +The memory allocated in the FLATMEM case is zeroed and it is never +poisoned, regardless of CONFIG_PAGE_POISON setting. + +The memory allocated in the SPARSEMEM cases is not zeroed and it is +implicitly poisoned inside memblock if CONFIG_PAGE_POISON is set. + +Introduce memmap_alloc() wrapper for memblock allocators that will be used +for both FLATMEM and SPARSEMEM cases and will makei memory map zeroing and +poisoning consistent for different memory models. + +Link: https://lkml.kernel.org/r/20210714123739.16493-4-rppt@kernel.org +Signed-off-by: Mike Rapoport <rppt(a)linux.ibm.com> +Cc: Michal Simek <monstr(a)monstr.eu> +Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> +Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org> +Conflicts: + mm/page_alloc.c +Signed-off-by: Liu Shixin <liushixin2(a)huawei.com> +Reviewed-by: Kefeng Wang <wangkefeng.wang(a)huawei.com> +Signed-off-by: Zheng Zengkai <zhengzengkai(a)huawei.com> -- 2.20.1

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[PATCH openEuler-1.0-LTS] Revert "blk-mq: fix null pointer dereference in blk_mq_queue_tag_busy_ite"
by Yongqiang Liu 18 Aug '22

18 Aug '22

From: Li Nan <linan122(a)huawei.com> hulk inclusion category: bugfix bugzilla: 187497, https://gitee.com/openeuler/kernel/issues/I5MT95 CVE: NA -------------------------------- This reverts commit 64ba823fd4272f7d624bbfb4bd6e3c89aa6f423c. Commit fea9f92f1748 introduce the bug. It is a patch for performance optimization and this version doesn't have to backport it. blk_mq_queue_tag_busy_iter() won't access q->tag_set->flags or reference other fields in q that is uninitialized at present. 64ba823fd427 will make io hang for special scsi drivers(e.x. ata_piix). Revert it. Signed-off-by: Li Nan <linan122(a)huawei.com> Reviewed-by: Yu Kuai <yukuai3(a)huawei.com> Reviewed-by: Jason Yan <yanaijie(a)huawei.com> Signed-off-by: Yongqiang Liu <liuyongqiang13(a)huawei.com> --- block/blk-mq-tag.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c index c24802fe6ab2..bee92ab06a5e 100644 --- a/block/blk-mq-tag.c +++ b/block/blk-mq-tag.c @@ -374,13 +374,6 @@ void blk_mq_queue_tag_busy_iter(struct request_queue *q, busy_iter_fn *fn, struct blk_mq_hw_ctx *hctx; int i; - /* - * For dm, it can run here after register_disk, but the queue has not - * been initialized yet. Check QUEUE_FLAG_REGISTERED prevent null point - * access. - */ - if (!test_bit(QUEUE_FLAG_REGISTERED, &q->queue_flags)) - return; /* * __blk_mq_update_nr_hw_queues will update the nr_hw_queues and * queue_hw_ctx after freeze the queue, so we use q_usage_counter -- 2.25.1

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[PATCH openEuler-22.09 00/26] bring total memory reliable features to
by Zheng Zengkai 18 Aug '22

18 Aug '22

Memory reliable feature is a memory tiering mechanism. It is based on kernel mirror feature, which splits memory into two sperate regions, mirrored(reliable) region and non-mirrored (non-reliable) region. for kernel mirror feature: allocate kernel memory from mirrored region by default allocate user memory from non-mirrored region by default non-mirrored region will be arranged into ZONE_MOVABLE. for kernel reliable feature, it has additional features below: normal user tasks never alloc memory from mirrored region with userspace apis(malloc, mmap, etc.) special user tasks will allocate memory from mirrored region by default tmpfs/pagecache allocate memory from mirrored region by default upper limit of mirrored region allcated for user tasks, tmpfs and pagecache Support Reliable fallback mechanism which allows special user tasks, tmpfs and pagecache can fallback to alloc non-mirrored region, it's the default setting. In order to fulfil the goal ___GFP_RELIABILITY flag added for alloc memory from mirrored region. the high_zoneidx for special user tasks/tmpfs/pagecache is set to ZONE_NORMAL. normal user tasks could only alloc from ZONE_MOVABLE. This patch is just the main framework, memory reliable support for special user tasks, pagecache and tmpfs has own patches. To enable this function, mirrored(reliable) memory is needed and "kernelcore=reliable" should be added to kernel parameters. Chen Wandun (4): mm: Add cmdline for the reliable memory usage of page cache proc/meminfo: Add "FileCache" item in /proc/meminfo mm: add "ReliableFileCache" item in /proc/meminfo mm: Add support for limiting the usage of reliable memory in pagecache Ma Wupeng (17): mm: Drop shmem reliable related log during startup mm: Export static key mem_reliable mm: Export mem_reliable_status() for checking memory reliable status mm: Refactor code in reliable_report_meminfo() mm: Count reliable memory info based on zone info mm: Disable memory reliable when kdump is in progress mm: Clear GFP_RELIABLE if the conditions are not met mm: thp: Add memory reliable support for hugepaged collapse mm: Add reliable memory use limit for user tasks mm: Introduce fallback mechanism for memory reliable mm: Introduce shmem mirrored memory limit for memory reliable mm: Introduce reliable_debug=S to control shmem use mirrored memory mm: Introduce proc interface to disable memory reliable features mm: Show debug info about memory reliable if oom occurs mm: Update reliable flag in memory allocaion for reliable task only in task context mm/memblock: Introduce ability to alloc memory from specify memory reigon mm/hugetlb: Hugetlb use non-mirrored memory if memory reliable is enabled Peng Wu (3): mm: Add kernel param for memory reliable mm: Add reliable_nr_page for accounting reliable memory proc: Count reliable memory usage of reliable tasks Yu Liao (1): mm: Add sysctl to clear free list pages Zhou Guanghui (1): shmem: Count and show reliable shmem info .../admin-guide/kernel-parameters.txt | 13 + Documentation/admin-guide/sysctl/vm.rst | 13 + Documentation/filesystems/proc.rst | 8 + fs/proc/task_mmu.c | 1 + include/linux/mem_reliable.h | 124 ++++- include/linux/memblock.h | 5 + include/linux/mm.h | 6 +- include/linux/mm_inline.h | 4 + include/linux/mm_types.h | 3 +- include/linux/mmzone.h | 5 + kernel/events/uprobes.c | 2 + lib/show_mem.c | 1 + mm/Kconfig | 13 + mm/Makefile | 2 + mm/clear_freelist_page.c | 187 +++++++ mm/filemap.c | 9 +- mm/huge_memory.c | 8 + mm/hugetlb.c | 17 +- mm/khugepaged.c | 34 +- mm/ksm.c | 2 + mm/mem_reliable.c | 507 ++++++++++++++++-- mm/memblock.c | 107 ++++ mm/memory.c | 12 + mm/migrate.c | 10 + mm/mmap.c | 1 + mm/page_alloc.c | 135 ++++- mm/rmap.c | 5 + mm/shmem.c | 21 +- mm/swapfile.c | 2 + mm/userfaultfd.c | 1 + mm/vmscan.c | 2 + 31 files changed, 1183 insertions(+), 77 deletions(-) create mode 100644 mm/clear_freelist_page.c -- 2.20.1

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[PATCH openEuler-22.09 v2 000/391] BPF CO-RE support
by Zheng Zengkai 17 Aug '22

17 Aug '22

This set introduces CO-RE support in the kernel. There are several reasons to add such support: 1.It's a step toward signed BPF programs. 2.It allows golang like languages that struggle to adopt libbpf to take advantage of CO-RE powers. 3.Currently the field accessed by 'ldx [R1 + 10]' insn is recognized by the verifier purely based on +10 offset. If R1 points to a union the verifier picks one of the fields at this offset. With CO-RE the kernel can disambiguate the field access. Alan Maguire (5): libbpf: bpf__find_by_name[_kind] should use btf__get_nr_types() libbpf: BTF dumper support for typed data libbpf: Clarify/fix unaligned data issues for btf typed dump libbpf: Avoid use of __int128 in typed dump display libbpf: Propagate errors when retrieving enum value for typed data display Alexei Starovoitov (55): bpf: Optimize program stats bpf: Run sleepable programs with migration disabled bpf: Compute program stats for sleepable programs bpf: Add per-program recursion prevention mechanism selftest/bpf: Add a recursion test bpf: Count the number of times recursion was prevented selftests/bpf: Improve recursion selftest bpf: Allows per-cpu maps and map-in-map in sleepable programs selftests/bpf: Add a test for map-in-map and per-cpu maps in sleepable progs bpf: Clear per_cpu pointers during bpf_prog_realloc bpf: Dont allow vmlinux BTF to be used in map_create and prog_load. libbpf: Remove unused field. bpf: Introduce bpf_sys_bpf() helper and program type. bpf: Introduce bpfptr_t user/kernel pointer. bpf: Prepare bpf syscall to be used from kernel and user space. libbpf: Support for syscall program type bpf: Make btf_load command to be bpfptr_t compatible. bpf: Introduce fd_idx bpf: Add bpf_btf_find_by_name_kind() helper. bpf: Add bpf_sys_close() helper. libbpf: Change the order of data and text relocations. libbpf: Add bpf_object pointer to kernel_supports(). libbpf: Preliminary support for fd_idx libbpf: Generate loader program out of BPF ELF file. libbpf: Cleanup temp FDs when intermediate sys_bpf fails. libbpf: Introduce bpf_map__initial_value(). bpftool: Use syscall/loader program in "prog load" and "gen skeleton" command. selftests/bpf: Convert few tests to light skeleton. selftests/bpf: Convert atomics test to light skeleton. selftests/bpf: Convert test printk to use rodata. selftests/bpf: Convert test trace_printk to lskel. bpf: Add cmd alias BPF_PROG_RUN bpf: Prepare bpf_prog_put() to be called from irq context. bpf: Factor out bpf_spin_lock into helpers. libbpf: Cleanup the layering between CORE and bpf_program. libbpf: Split bpf_core_apply_relo() into bpf_program independent helper. libbpf: Move CO-RE types into relo_core.h. libbpf: Split CO-RE logic into relo_core.c. libbpf: Make gen_loader data aligned. libbpf: Replace btf__type_by_id() with btf_type_by_id(). bpf: Rename btf_member accessors. bpf: Prepare relo_core.c for kernel duty. bpf: Define enum bpf_core_relo_kind as uapi. bpf: Pass a set of bpf_core_relo-s to prog_load command. bpf: Add bpf_core_add_cands() and wire it into bpf_core_apply_relo_insn(). libbpf: Use CO-RE in the kernel in light skeleton. libbpf: Support init of inner maps in light skeleton. libbpf: Clean gen_loader's attach kind. selftests/bpf: Improve inner_map test coverage. selftests/bpf: Convert map_ptr_kern test to use light skeleton. selftests/bpf: Additional test for CO-RE in the kernel. selftests/bpf: Add CO-RE relocations to verifier scale test. libbpf: Reduce bpf_core_apply_relo_insn() stack usage. bpf: Silence purge_cand_cache build warning. libbpf: Fix gen_loader assumption on number of programs. Andrei Matei (1): libbpf: Fail early when loading programs with unspecified type Andrew Delgadillo (1): selftests/bpf: Drop the need for LLVM's llc Andrii Nakryiko (148): libbpf: Factor out common operations in BTF writing APIs selftest/bpf: Relax btf_dedup test checks libbpf: Unify and speed up BTF string deduplication libbpf: Implement basic split BTF support selftests/bpf: Add split BTF basic test selftests/bpf: Add checking of raw type dump in BTF writer APIs selftests libbpf: Support BTF dedup of split BTFs libbpf: Accomodate DWARF/compiler bug with duplicated identical arrays selftests/bpf: Add split BTF dedup selftests tools/bpftool: Add bpftool support for split BTF bpf: Add in-kernel split BTF support bpf: Assign ID to vmlinux BTF and return extra info for BTF in GET_OBJ_INFO kbuild: Build kernel module BTFs if BTF is enabled and pahole supports it bpf: Load and verify kernel module BTFs tools/bpftool: Add support for in-kernel and named BTF in `btf show` bpf: Compile out btf_parse_module() if module BTF is not enabled bpf: Sanitize BTF data pointer after module is loaded tools/bpftool: Emit name <anon> for anonymous BTFs libbpf: Add base BTF accessor tools/bpftool: Auto-detect split BTFs in common cases bpf: Keep module's btf_data_size intact after load libbpf: Add internal helper to load BTF data by FD libbpf: Refactor CO-RE relocs to not assume a single BTF object libbpf: Add kernel module BTF support for CO-RE relocations selftests/bpf: Add bpf_testmod kernel module for testing selftests/bpf: Add support for marking sub-tests as skipped selftests/bpf: Add CO-RE relocs selftest relying on kernel module BTF bpf: Remove hard-coded btf_vmlinux assumption from BPF verifier bpf: Allow to specify kernel module BTFs when attaching BPF programs libbpf: Factor out low-level BPF program loading helper libbpf: Support attachment of BPF tracing programs to kernel modules selftests/bpf: Add tp_btf CO-RE reloc test for modules kbuild: Skip module BTF generation for out-of-tree external modules selftests/bpf: fix bpf_testmod.ko recompilation logic libbpf: Support modules in bpf_program__set_attach_target() API bpf: Allow empty module BTFs libbpf: Add user-space variants of BPF_CORE_READ() family of macros libbpf: Add non-CO-RE variants of BPF_CORE_READ() macro family selftests/bpf: Add tests for user- and non-CO-RE BPF_CORE_READ() variants libbpf: Clarify kernel type use with USER variants of CORE reading macros selftests/bpf: Sync RCU before unloading bpf_testmod bpf: Support BPF ksym variables in kernel modules libbpf: Support kernel module ksym externs selftests/bpf: Test kernel module ksym externs selftests/bpf: Don't exit on failed bpf_testmod unload libbpf: Stop using feature-detection Makefiles libbpf: provide NULL and KERNEL_VERSION macros in bpf_helpers.h libbpf: Expose btf_type_by_id() internally libbpf: Generalize BTF and BTF.ext type ID and strings iteration libbpf: Rename internal memory-management helpers libbpf: Extract internal set-of-strings datastructure APIs libbpf: Add generic BTF type shallow copy API libbpf: Add BPF static linker APIs libbpf: Add BPF static linker BTF and BTF.ext support bpftool: Add ability to specify custom skeleton object name bpftool: Add `gen object` command to perform BPF static linking selftests/bpf: Pass all BPF .o's through BPF static linker selftests/bpf: Add multi-file statically linked BPF object file test libbpf: Skip BTF fixup if object file has no BTF libbpf: Constify few bpf_program getters libbpf: Preserve empty DATASEC BTFs during static linking libbpf: Fix memory leak when emitting final btf_ext libbpf: Add bpf_map__inner_map API libbpf: Suppress compiler warning when using SEC() macro with externs libbpf: Mark BPF subprogs with hidden visibility as static for BPF verifier libbpf: Allow gaps in BPF program sections to support overriden weak functions libbpf: Refactor BTF map definition parsing libbpf: Factor out symtab and relos sanity checks libbpf: Make few internal helpers available outside of libbpf.c libbpf: Extend sanity checking ELF symbols with externs validation libbpf: Tighten BTF type ID rewriting with error checking libbpf: Add linker extern resolution support for functions and global variables libbpf: Support extern resolution for BTF-defined maps in .maps section libbpf: Support BTF_KIND_FLOAT during type compatibility checks in CO-RE bpftool: Strip const/volatile/restrict modifiers from .bss and .data vars libbpf: Add per-file linker opts selftests/bpf: Stop using static variables for passing data to/from user-space bpftool: Stop emitting static variables in BPF skeleton libbpf: Fix ELF symbol visibility update logic libbpf: Treat STV_INTERNAL same as STV_HIDDEN for functions libbpf: Reject static maps libbpf: Reject static entry-point BPF programs libbpf: Add libbpf_set_strict_mode() API to turn on libbpf 1.0 behaviors libbpf: Streamline error reporting for low-level APIs libbpf: Streamline error reporting for high-level APIs bpftool: Set errno on skeleton failures and propagate errors libbpf: Move few APIs from 0.4 to 0.5 version libbpf: Refactor header installation portions of Makefile libbpf: Install skel_internal.h header used from light skeletons selftests/bpf: Add remaining ASSERT_xxx() variants libbpf: Fix build with latest gcc/binutils with LTO libbpf: Make libbpf_version.h non-auto-generated selftests/bpf: Update selftests to always provide "struct_ops" SEC libbpf: Ensure BPF prog types are set before relocations libbpf: Simplify BPF program auto-attach code libbpf: Minimize explicit iterator of section definition array libbpf: Use pre-setup sec_def in libbpf_find_attach_btf_id() selftests/bpf: Stop using relaxed_core_relocs which has no effect libbpf: Deprecated bpf_object_open_opts.relaxed_core_relocs libbpf: Allow skipping attach_func_name in bpf_program__set_attach_target() libbpf: Schedule open_opts.attach_prog_fd deprecation since v0.7 libbpf: Constify all high-level program attach APIs selftests/bpf: Turn on libbpf 1.0 mode and fix all IS_ERR checks selftests/bpf: Switch fexit_bpf2bpf selftest to set_attach_target() API libbpf: Add "tc" SEC_DEF which is a better name for "classifier" libbpf: Refactor internal sec_def handling to enable pluggability libbpf: Reduce reliance of attach_fns on sec_def internals libbpf: Add API that copies all BTF types from one BTF object to another libbpf: Deprecate btf__finalize_data() and move it into libbpf.c libbpf: Extract ELF processing state into separate struct libbpf: Use Elf64-specific types explicitly for dealing with ELF libbpf: Remove assumptions about uniqueness of .rodata/.data/.bss maps bpftool: Support multiple .rodata/.data internal maps in skeleton bpftool: Improve skeleton generation for data maps without DATASEC type libbpf: Support multiple .rodata.* and .data.* BPF maps selftests/bpf: Demonstrate use of custom .rodata/.data sections libbpf: Simplify look up by name of internal maps selftests/bpf: Switch to ".bss"/".rodata"/".data" lookups for internal maps libbpf: Fix off-by-one bug in bpf_core_apply_relo() libbpf: Add ability to fetch bpf_program's underlying instructions libbpf: Deprecate multi-instance bpf_program APIs libbpf: Deprecate ambiguously-named bpf_program__size() API libbpf: Detect corrupted ELF symbols section libbpf: Improve sanity checking during BTF fix up libbpf: Validate that .BTF and .BTF.ext sections contain data libbpf: Fix section counting logic libbpf: Improve ELF relo sanitization libbpf: Rename DECLARE_LIBBPF_OPTS into LIBBPF_OPTS selftests/bpf: Pass sanitizer flags to linker through LDFLAGS libbpf: Free up resources used by inner map definition selftests/bpf: Fix memory leaks in btf_type_c_dump() helper selftests/bpf: Free per-cpu values array in bpf_iter selftest selftests/bpf: Free inner strings index in btf selftest selftests/bpf: Avoid duplicate btf__parse() call libbpf: Load global data maps lazily on legacy kernels libbpf: Fix potential misaligned memory access in btf_ext__new() libbpf: Don't call libc APIs with NULL pointers libbpf: Fix glob_syms memory leak in bpf_linker libbpf: Fix using invalidated memory in bpf_linker selftests/bpf: Fix possible NULL passed to memcpy() with zero size selftests/bpf: Prevent misaligned memory access in get_stack_raw_tp test selftests/bpf: Fix misaligned memory access in queue_stack_map test selftests/bpf: Prevent out-of-bounds stack access in test_bpffs selftests/bpf: Fix misaligned accesses in xdp and xdp_bpf2bpf tests libbpf: Cleanup struct bpf_core_cand. libbpf: Fix non-C89 loop variable declaration in gen_loader.c selftests/bpf: Fix GCC11 compiler warnings in -O2 mode libbpf: Fix logic for finding matching program for CO-RE relocation Arnaldo Carvalho de Melo (1): libbpf: Provide GELF_ST_VISIBILITY() define for older libelf Brendan Jackman (15): tools/resolve_btfids: Fix some error messages bpf: Fix cold build of test_progs-no_alu32 bpf: Clarify return value of probe str helpers bpf: x86: Factor out emission of ModR/M for *(reg + off) bpf: x86: Factor out emission of REX byte bpf: x86: Factor out a lookup table for some ALU opcodes bpf: Rename BPF_XADD and prepare to encode other atomics in .imm bpf: Move BPF_STX reserved field check into BPF_STX verifier code bpf: Add BPF_FETCH field / create atomic_fetch_add instruction bpf: Add instructions for atomic_[cmp]xchg bpf: Pull out a macro for interpreting atomic ALU operations bpf: Add bitwise atomic instructions bpf: Add tests for new BPF atomic operations bpf: Document new atomic instructions bpf: Rename fixup_bpf_calls and add some comments Cong Wang (1): bpf: Clear percpu pointers in bpf_prog_clone_free() Daniel Xu (1): libbpf: Do not close un-owned FD 0 on errors Dave Marchevsky (1): bpf: Add verified_insns to bpf_prog_info and fdinfo Dmitrii Banshchikov (7): bpf: Rename bpf_reg_state variables bpf: Extract nullable reg type conversion into a helper function bpf: Support pointers in global func args selftests/bpf: Add unit tests for pointers in global functions bpf: Drop imprecise log message selftests/bpf: Fix a compiler warning in global func test bpf: Use MAX_BPF_FUNC_REG_ARGS macro Florent Revest (6): selftests/bpf: Fix the ASSERT_ERR_PTR macro bpf: Factorize bpf_trace_printk and bpf_seq_printf bpf: Add a ARG_PTR_TO_CONST_STR argument type bpf: Add a bpf_snprintf helper libbpf: Introduce a BPF_SNPRINTF helper macro libbpf: Move BPF_SEQ_PRINTF and BPF_SNPRINTF to bpf_helpers.h Florian Lehner (2): selftests/bpf: Print reason when a tester could not run a program selftests/bpf: Avoid errno clobbering Gary Lin (3): bpf,x64: Pad NOPs to make images converge more easily test_bpf: Remove EXPECTED_FAIL flag from bpf_fill_maxinsns11 selftests/bpf: Add verifier tests for x64 jit jump padding Hao Luo (1): libbpf: Support weak typed ksyms. Hengqi Chen (5): libbpf: Fix KERNEL_VERSION macro tools/resolve_btfids: Emit warnings and patch zero id for missing symbols libbpf: Add btf__load_vmlinux_btf/btf__load_module_btf libbpf: Support uniform BTF-defined key/value specification across all BPF maps libbpf: Support static initialization of BPF_MAP_TYPE_PROG_ARRAY Ian Rogers (3): bpf, libbpf: Avoid unused function warning on bpf_tail_call_static tools/bpftool: Add -Wall when building BPF programs libbpf: Add NULL check to add_dummy_ksym_var Ilya Leoshkevich (6): selftests/bpf: Copy extras in out-of-srctree builds bpf: Add BTF_KIND_FLOAT to uapi libbpf: Fix whitespace in btf_add_composite() comment libbpf: Add BTF_KIND_FLOAT support bpf: Generate BTF_KIND_FLOAT when linking vmlinux libbpf: Use __BYTE_ORDER__ Jason Wang (1): libbpf: Fix comment typo Jean-Philippe Brucker (12): tools: Factor HOSTCC, HOSTLD, HOSTAR definitions tools/runqslower: Use Makefile.include tools/runqslower: Enable out-of-tree build tools/runqslower: Build bpftool using HOSTCC tools/bpftool: Fix build slowdown selftests/bpf: Enable cross-building selftests/bpf: Fix out-of-tree build selftests/bpf: Move generated test files to $(TEST_GEN_FILES) selftests/bpf: Fix installation of urandom_read selftests/bpf: Install btf_dump test cases tools/bpftool: Fix cross-build tools/runqslower: Fix cross-build Jiri Olsa (5): tools/resolve_btfids: Warn when having multiple IDs for single type libbpf: Use string table index from index table if needed perf build: Move feature cleanup under tools/build selftests/bpf: Add re-attach test to fentry_test selftests/bpf: Add re-attach test to fexit_test Joe Stringer (1): tools: Sync uapi bpf.h header with latest changes Jonathan Edwards (1): libbpf: Add extra BPF_PROG_TYPE check to bpf_object__probe_loading Kumar Kartikeya Dwivedi (22): libbpf: Add various netlink helpers libbpf: Add low level TC-BPF management API libbpf: Remove unneeded check for flags during tc detach libbpf: Set NLM_F_EXCL when creating qdisc libbpf: Fix segfault in static linker for objects without BTF libbpf: Fix segfault in light skeleton for objects without BTF bpf: Introduce BPF support for kernel module function calls bpf: Be conservative while processing invalid kfunc calls bpf: btf: Introduce helpers for dynamic BTF set registration tools: Allow specifying base BTF file in resolve_btfids libbpf: Support kernel module function calls libbpf: Resolve invalid weak kfunc calls with imm = 0, off = 0 libbpf: Update gen_loader to emit BTF_KIND_FUNC relocations bpf: selftests: Add selftests for module kfunc support bpf: Add bpf_kallsyms_lookup_name helper libbpf: Add typeless ksym support to gen_loader libbpf: Add weak ksym support to gen_loader selftests/bpf: Add weak/typeless ksym test for light skeleton libbpf: Perform map fd cleanup for gen_loader in case of error bpf: Change bpf_kallsyms_lookup_name size type to ARG_CONST_SIZE_OR_ZERO libbpf: Avoid double stores for success/failure case of ksym relocations libbpf: Avoid reload of imm for weak, unresolved, repeating ksym Lorenz Bauer (2): bpf: Consolidate shared test timing code bpf: Add PROG_TEST_RUN support for sk_lookup programs Martin KaFai Lau (10): bpf: Simplify freeing logic in linfo and jited_linfo bpf: Refactor btf_check_func_arg_match bpf: Support bpf program calling kernel function bpf: Support kernel function call in x86-32 libbpf: Refactor bpf_object__resolve_ksyms_btf_id libbpf: Refactor codes for finding btf id of a kernel symbol libbpf: Rename RELO_EXTERN to RELO_EXTERN_VAR libbpf: Record extern sym relocation first libbpf: Support extern kernel function bpf: selftests: Add kfunc_call test Martynas Pumputis (1): selftests/bpf: Check inner map deletion Matt Smith (3): libbpf: Change bpf_object_skeleton data field to const pointer bpftool: Provide a helper method for accessing skeleton's embedded ELF data selftests/bpf: Add checks for X__elf_bytes() skeleton helper Mauricio Vásquez (1): libbpf: Fix memory leak in btf__dedup() Michal Suchanek (1): libbpf: Fix pr_warn type warnings on 32bit Pedro Tammela (2): libbpf: Avoid inline hint definition from 'linux/stddef.h' libbpf: Clarify flags in ringbuf helpers Quentin Monnet (17): libbpf: Return non-null error on failures in libbpf_find_prog_btf_id() libbpf: Rename btf__load() as btf__load_into_kernel() libbpf: Rename btf__get_from_id() as btf__load_from_kernel_by_id() tools: Free BTF objects at various locations tools: Replace btf__get_from_id() with btf__load_from_kernel_by_id() libbpf: Add split BTF support for btf__load_from_kernel_by_id() tools: bpftool: Support dumping split BTF by id libbpf: Add LIBBPF_DEPRECATED_SINCE macro for scheduling API deprecations libbpf: Skip re-installing headers file if source is older than target bpftool: Remove unused includes to <bpf/bpf_gen_internal.h> bpftool: Install libbpf headers instead of including the dir tools/resolve_btfids: Install libbpf headers when building tools/runqslower: Install libbpf headers when building bpf: preload: Install libbpf headers when building bpf: iterators: Install libbpf headers when building selftests/bpf: Better clean up for runqslower in test_bpftool_build.sh bpftool: Add install-bin target to install binary only Rafael David Tinoco (1): libbpf: Add bpf object kern_version attribute setter Sedat Dilek (1): tools: Factor Clang, LLC and LLVM utils definitions Shuyi Cheng (2): libbpf: Introduce 'btf_custom_path' to 'bpf_obj_open_opts' libbpf: Add "bool skipped" to struct bpf_map Song Liu (3): bpftool: Add Makefile target bootstrap perf build: Support build BPF skeletons with perf perf stat: Enable counting events for BPF programs Stanislav Fomichev (2): libbpf: Cap retries in sys_bpf_prog_load libbpf: Skip bpf_object__probe_loading for light skeleton Toke Høiland-Jørgensen (5): bpf: Return target info when a tracing bpf_link is queried libbpf: Restore errno return for functions that were already returning it libbpf: Don't crash on object files with no symbol tables libbpf: Ignore STT_SECTION symbols in 'maps' section libbpf: Properly ignore STT_SECTION symbols in legacy map definitions Wang Hai (1): libbpf: Simplify the return expression of bpf_object__init_maps function Wang Qing (1): bpf, btf: Remove the duplicate btf_ids.h include Wedson Almeida Filho (1): bpf: Refactor check_cfg to use a structured loop. Yauheni Kaliuta (7): selftests/bpf: test_progs/sockopt_sk: Remove version selftests/bpf: test_progs/sockopt_sk: Convert to use BPF skeleton selftests/bpf: Pass page size from userspace in sockopt_sk selftests/bpf: Pass page size from userspace in map_ptr selftests/bpf: mmap: Use runtime page size selftests/bpf: ringbuf: Use runtime page size selftests/bpf: ringbuf_multi: Use runtime page size Yonghong Song (26): bpf: Permit size-0 datasec bpf: Refactor BPF_PSEUDO_CALL checking as a helper function bpf: Factor out visit_func_call_insn() in check_cfg() bpf: Factor out verbose_invalid_scalar() bpf: Refactor check_func_call() to allow callback function bpf: Change return value of verifier function add_subprog() bpf: Add bpf_for_each_map_elem() helper libbpf: Move function is_ldimm64() earlier in libbpf.c libbpf: Support subprog address relocation selftests/bpf: Fix test_cpp compilation failure with clang bpftool: Fix a clang compilation warning libbpf: Add support for new llvm bpf relocations bpf: Emit better log message if bpf_iter ctx arg btf_id == 0 btf: Change BTF_KIND_* macros to enums bpf: Support for new btf kind BTF_KIND_TAG libbpf: Rename btf_{hash,equal}_int to btf_{hash,equal}_int_tag libbpf: Add support for BTF_KIND_TAG bpftool: Add support for BTF_KIND_TAG bpf: Rename BTF_KIND_TAG to BTF_KIND_DECL_TAG bpf: Add BTF_KIND_DECL_TAG typedef support docs/bpf: Update documentation for BTF_KIND_DECL_TAG typedef support bpf: Support BTF_KIND_TYPE_TAG for btf_type_tag attributes libbpf: Support BTF_KIND_TYPE_TAG bpftool: Support BTF_KIND_TYPE_TAG docs/bpf: Update documentation for BTF_KIND_TYPE_TAG support libbpf: Fix a couple of missed btf_type_tag handling in btf.c Documentation/ABI/testing/sysfs-kernel-btf | 8 + Documentation/bpf/btf.rst | 40 +- Documentation/networking/filter.rst | 61 +- arch/arm/net/bpf_jit_32.c | 7 +- arch/arm64/net/bpf_jit_comp.c | 16 +- arch/mips/net/ebpf_jit.c | 11 +- arch/powerpc/net/bpf_jit_comp64.c | 25 +- 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.../selftests/bpf/progs/bpf_iter_task_btf.c | 1 - .../selftests/bpf/progs/bpf_iter_task_file.c | 1 - .../selftests/bpf/progs/bpf_iter_task_stack.c | 1 - .../selftests/bpf/progs/bpf_iter_tcp4.c | 1 - .../selftests/bpf/progs/bpf_iter_tcp6.c | 1 - .../selftests/bpf/progs/bpf_iter_test_kern4.c | 4 +- .../selftests/bpf/progs/bpf_iter_udp4.c | 1 - .../selftests/bpf/progs/bpf_iter_udp6.c | 1 - tools/testing/selftests/bpf/progs/core_kern.c | 104 + .../selftests/bpf/progs/core_reloc_types.h | 17 + tools/testing/selftests/bpf/progs/kfree_skb.c | 4 +- .../selftests/bpf/progs/kfunc_call_test.c | 47 + .../bpf/progs/kfunc_call_test_subprog.c | 42 + tools/testing/selftests/bpf/progs/lsm.c | 69 + .../selftests/bpf/progs/map_ptr_kern.c | 20 +- tools/testing/selftests/bpf/progs/recursion.c | 46 + .../testing/selftests/bpf/progs/sockopt_sk.c | 11 +- tools/testing/selftests/bpf/progs/tailcall3.c | 2 +- tools/testing/selftests/bpf/progs/tailcall4.c | 2 +- tools/testing/selftests/bpf/progs/tailcall5.c | 2 +- .../selftests/bpf/progs/tailcall_bpf2bpf2.c | 2 +- .../selftests/bpf/progs/tailcall_bpf2bpf4.c | 2 +- .../selftests/bpf/progs/test_cls_redirect.c | 4 +- .../bpf/progs/test_core_read_macros.c | 50 + .../bpf/progs/test_core_reloc_module.c | 96 + .../selftests/bpf/progs/test_global_func10.c | 29 + .../selftests/bpf/progs/test_global_func11.c | 19 + .../selftests/bpf/progs/test_global_func12.c | 21 + .../selftests/bpf/progs/test_global_func13.c | 24 + .../selftests/bpf/progs/test_global_func14.c | 21 + .../selftests/bpf/progs/test_global_func15.c | 22 + .../selftests/bpf/progs/test_global_func16.c | 22 + .../selftests/bpf/progs/test_global_func9.c | 132 + .../bpf/progs/test_global_func_args.c | 91 + .../selftests/bpf/progs/test_ksyms_module.c | 50 + .../selftests/bpf/progs/test_ksyms_weak.c | 56 + .../bpf/progs/test_map_in_map_invalid.c | 26 + tools/testing/selftests/bpf/progs/test_mmap.c | 2 - .../selftests/bpf/progs/test_rdonly_maps.c | 6 +- .../selftests/bpf/progs/test_ringbuf.c | 5 +- .../selftests/bpf/progs/test_ringbuf_multi.c | 1 - .../selftests/bpf/progs/test_skeleton.c | 20 +- .../selftests/bpf/progs/test_sockmap_listen.c | 2 +- .../selftests/bpf/progs/test_static_linked1.c | 30 + .../selftests/bpf/progs/test_static_linked2.c | 31 + .../selftests/bpf/progs/test_subprogs.c | 13 + .../selftests/bpf/progs/test_verif_scale2.c | 4 +- .../selftests/bpf/progs/trace_printk.c | 6 +- .../selftests/bpf/test_bpftool_build.sh | 4 + .../selftests/bpf/test_cgroup_storage.c | 2 +- tools/testing/selftests/bpf/test_maps.c | 231 +- tools/testing/selftests/bpf/test_progs.c | 79 +- tools/testing/selftests/bpf/test_progs.h | 83 +- .../selftests/bpf/test_tcpnotify_user.c | 7 +- tools/testing/selftests/bpf/test_verifier.c | 103 +- .../selftests/bpf/verifier/atomic_and.c | 77 + .../selftests/bpf/verifier/atomic_cmpxchg.c | 96 + .../selftests/bpf/verifier/atomic_fetch_add.c | 106 + .../selftests/bpf/verifier/atomic_or.c | 77 + .../selftests/bpf/verifier/atomic_xchg.c | 46 + .../selftests/bpf/verifier/atomic_xor.c | 77 + tools/testing/selftests/bpf/verifier/calls.c | 35 +- tools/testing/selftests/bpf/verifier/ctx.c | 7 +- .../selftests/bpf/verifier/dead_code.c | 10 +- .../bpf/verifier/direct_packet_access.c | 4 +- tools/testing/selftests/bpf/verifier/jit.c | 24 + .../testing/selftests/bpf/verifier/leak_ptr.c | 10 +- .../selftests/bpf/verifier/meta_access.c | 4 +- tools/testing/selftests/bpf/verifier/unpriv.c | 3 +- .../bpf/verifier/value_illegal_alu.c | 2 +- tools/testing/selftests/bpf/verifier/xadd.c | 18 +- tools/testing/selftests/tc-testing/Makefile | 3 +- 294 files changed, 25170 insertions(+), 6337 deletions(-) create mode 100644 include/linux/bpfptr.h create mode 100644 tools/lib/bpf/bpf_gen_internal.h create mode 100644 tools/lib/bpf/gen_loader.c create mode 100644 tools/lib/bpf/libbpf_legacy.h create mode 100644 tools/lib/bpf/libbpf_version.h create mode 100644 tools/lib/bpf/linker.c create mode 100644 tools/lib/bpf/relo_core.c create mode 100644 tools/lib/bpf/relo_core.h create mode 100644 tools/lib/bpf/skel_internal.h create mode 100644 tools/lib/bpf/strset.c create mode 100644 tools/lib/bpf/strset.h create mode 100644 tools/perf/util/bpf_counter.c create mode 100644 tools/perf/util/bpf_counter.h create mode 100644 tools/perf/util/bpf_skel/.gitignore create mode 100644 tools/perf/util/bpf_skel/bpf_prog_profiler.bpf.c create mode 100644 tools/testing/selftests/bpf/bpf_testmod/.gitignore create mode 100644 tools/testing/selftests/bpf/bpf_testmod/Makefile create mode 100644 tools/testing/selftests/bpf/bpf_testmod/bpf_testmod-events.h create mode 100644 tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c create mode 100644 tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.h create mode 100644 tools/testing/selftests/bpf/btf_helpers.c create mode 100644 tools/testing/selftests/bpf/btf_helpers.h create mode 100644 tools/testing/selftests/bpf/prog_tests/atomics.c create mode 100644 tools/testing/selftests/bpf/prog_tests/btf_dedup_split.c create mode 100644 tools/testing/selftests/bpf/prog_tests/btf_split.c create mode 100644 tools/testing/selftests/bpf/prog_tests/core_kern.c create mode 100644 tools/testing/selftests/bpf/prog_tests/core_read_macros.c create mode 100644 tools/testing/selftests/bpf/prog_tests/global_func_args.c create mode 100644 tools/testing/selftests/bpf/prog_tests/kfunc_call.c create mode 100644 tools/testing/selftests/bpf/prog_tests/ksyms_module.c create mode 100644 tools/testing/selftests/bpf/prog_tests/recursion.c create mode 100644 tools/testing/selftests/bpf/prog_tests/static_linked.c create mode 100644 tools/testing/selftests/bpf/progs/atomics.c create mode 100644 tools/testing/selftests/bpf/progs/core_kern.c create mode 100644 tools/testing/selftests/bpf/progs/kfunc_call_test.c create mode 100644 tools/testing/selftests/bpf/progs/kfunc_call_test_subprog.c create mode 100644 tools/testing/selftests/bpf/progs/recursion.c create mode 100644 tools/testing/selftests/bpf/progs/test_core_read_macros.c create mode 100644 tools/testing/selftests/bpf/progs/test_core_reloc_module.c create mode 100644 tools/testing/selftests/bpf/progs/test_global_func10.c create mode 100644 tools/testing/selftests/bpf/progs/test_global_func11.c create mode 100644 tools/testing/selftests/bpf/progs/test_global_func12.c create mode 100644 tools/testing/selftests/bpf/progs/test_global_func13.c create mode 100644 tools/testing/selftests/bpf/progs/test_global_func14.c create mode 100644 tools/testing/selftests/bpf/progs/test_global_func15.c create mode 100644 tools/testing/selftests/bpf/progs/test_global_func16.c create mode 100644 tools/testing/selftests/bpf/progs/test_global_func9.c create mode 100644 tools/testing/selftests/bpf/progs/test_global_func_args.c create mode 100644 tools/testing/selftests/bpf/progs/test_ksyms_module.c create mode 100644 tools/testing/selftests/bpf/progs/test_ksyms_weak.c create mode 100644 tools/testing/selftests/bpf/progs/test_map_in_map_invalid.c create mode 100644 tools/testing/selftests/bpf/progs/test_static_linked1.c create mode 100644 tools/testing/selftests/bpf/progs/test_static_linked2.c create mode 100644 tools/testing/selftests/bpf/verifier/atomic_and.c create mode 100644 tools/testing/selftests/bpf/verifier/atomic_cmpxchg.c create mode 100644 tools/testing/selftests/bpf/verifier/atomic_fetch_add.c create mode 100644 tools/testing/selftests/bpf/verifier/atomic_or.c create mode 100644 tools/testing/selftests/bpf/verifier/atomic_xchg.c create mode 100644 tools/testing/selftests/bpf/verifier/atomic_xor.c -- 2.20.1

1 391

[PATCH openEuler-22.09 00/13] arm64: add machine checksafe support
by Zheng Zengkai 17 Aug '22

17 Aug '22

With the increase of memory capacity and density, the probability of memory error increases. The increasing size and density of server RAM in the data center and cloud have shown increased uncorrectable memory errors. Currently, the kernel has a mechanism to recover from hardware memory errors. This patchset provides an new recovery mechanism. For arm64, the hardware memory error handling is do_sea() which divided into two cases: 1. The user state consumed the memory errors, the solution is kill the user process and isolate the error page. 2. The kernel state consumed the memory errors, the solution is panic. For case 2, Undifferentiated panic maybe not the optimal choice, it can be handled better, in some scenarios, we can avoid panic, such as uaccess, if the uaccess fails due to memory error, only the user process will be affected, kill the user process and isolate the user page with hardware memory errors is a better choice. Tong Tiangen (13): Revert "arm64: ras: copy_from_user scenario support uce kernel recovery" Revert "arm64: config: enable CONFIG_ARM64_UCE_KERNEL_RECOVERY" uaccess: add generic fallback version of copy_mc_to_user() arm64: extable: add new extable type "__mc_ex_table" arm64: add support for machine check error safe arm64: copy_form/to_user support machine check safe arm64: get/put_user support machine check safe arm64: add cow to machine check safe arm64: introduce copy_mc_to_kernel() implementation arm64: add dump_user_range() to machine check safe arm64: add machine check safe sysctl interface arm64/__mc_ex_table: search_module_mc_extables should not use num_exentries arm64/__mc_ex_table: fix compile error when CONFIG_ARCH_HAS_COPY_MC=n Documentation/admin-guide/sysctl/kernel.rst | 38 ++-- arch/arm64/Kconfig | 14 +- arch/arm64/configs/openeuler_defconfig | 1 - arch/arm64/include/asm/asm-uaccess.h | 5 + arch/arm64/include/asm/assembler.h | 26 ++- arch/arm64/include/asm/exception.h | 13 -- arch/arm64/include/asm/extable.h | 1 + arch/arm64/include/asm/mte.h | 4 + arch/arm64/include/asm/page.h | 10 + arch/arm64/include/asm/processor.h | 2 + arch/arm64/include/asm/string.h | 5 + arch/arm64/include/asm/uaccess.h | 70 +++++-- arch/arm64/lib/Makefile | 10 +- arch/arm64/lib/copy_from_user.S | 19 +- arch/arm64/lib/copy_page_mc.S | 80 ++++++++ arch/arm64/lib/copy_to_user.S | 10 +- arch/arm64/lib/memcpy_mc.S | 73 ++++++++ arch/arm64/lib/mte.S | 19 ++ arch/arm64/mm/Makefile | 2 - arch/arm64/mm/copypage.c | 43 ++++- arch/arm64/mm/extable.c | 12 ++ arch/arm64/mm/fault.c | 36 +++- arch/arm64/mm/uce_kernel_recovery.c | 198 -------------------- arch/powerpc/include/asm/uaccess.h | 1 + arch/x86/include/asm/uaccess.h | 1 + fs/coredump.c | 2 + include/asm-generic/vmlinux.lds.h | 19 +- include/linux/extable.h | 23 +++ include/linux/highmem.h | 8 + include/linux/module.h | 11 ++ include/linux/sched.h | 1 + include/linux/uaccess.h | 9 + kernel/extable.c | 29 +++ kernel/module.c | 38 ++++ kernel/sysctl.c | 11 ++ lib/iov_iter.c | 12 +- mm/memory.c | 2 +- scripts/sorttable.h | 29 +++ 38 files changed, 589 insertions(+), 298 deletions(-) create mode 100644 arch/arm64/lib/copy_page_mc.S create mode 100644 arch/arm64/lib/memcpy_mc.S delete mode 100644 arch/arm64/mm/uce_kernel_recovery.c -- 2.20.1

1 13

[PATCH openEuler-22.09 00/21] sched: programmable: Fix sched bpf hook
by Zheng Zengkai 17 Aug '22

17 Aug '22

sched: programmable: Fix sched bpf hook cfs_check_preempt_tick Chen Hui (11): sched: programmable: Add a tag for the task group sched: programmable: Add user interface of task group tag sched: programmable: Add a tag for the task sched: programmable: Add user interface of task tag sched: programmable: add bpf_sched_task_tag_of helper function sched: programmable: Add convenient helper functions to convert sched entity samples/bpf: Update bpf loader for sched section names bpf: sched: Add four helper functions to get cpu stat bpf:programmable: Add cpumask ops collection sched: programmable: Add lib for sched programmable sched: programmable: Add three hooks in select_task_rq_fair() Guan Jing (2): sched: programmable: Add hook for pick next task samples: bpf: Add bpf sched pick task sample Hui Tang (3): bpf:programmable: Add helper func to check cpu share cache bpf:programmable: Add helper func to set cpus_ptr in task samples:bpf: Add samples for cfs select core Ren Zhijie (5): sched: programmable: Fix sched bpf hook cfs_check_preempt_tick sched: programmable: add bpf_sched_tg_tag_of helper function samples: bpf: Add bpf sched preempt sample program sched: programmable: Add helpers to set tag of task or task_group sched: programmable: Add helper function for cpu topology. fs/proc/base.c | 65 ++++ include/linux/bpf_topology.h | 46 +++ include/linux/sched.h | 85 +++++ include/linux/sched_hook_defs.h | 5 + include/uapi/linux/bpf.h | 151 +++++++++ init/init_task.c | 3 + kernel/bpf/helpers.c | 12 + kernel/bpf/verifier.c | 4 +- kernel/sched/Makefile | 3 +- kernel/sched/bpf_sched.c | 433 ++++++++++++++++++++++++ kernel/sched/bpf_topology.c | 97 ++++++ kernel/sched/core.c | 103 ++++++ kernel/sched/fair.c | 64 +++- kernel/sched/sched.h | 8 + samples/bpf/Makefile | 9 + samples/bpf/bpf_load.c | 8 +- samples/bpf/sched_pick_task_kern.c | 56 ++++ samples/bpf/sched_pick_task_user.c | 94 ++++++ samples/bpf/sched_preempt_kern.c | 147 +++++++++ samples/bpf/sched_preempt_user.c | 140 ++++++++ samples/bpf/sched_select_core_kern.c | 259 +++++++++++++++ samples/bpf/sched_select_core_user.c | 125 +++++++ scripts/bpf_helpers_doc.py | 20 ++ tools/include/uapi/linux/bpf.h | 151 +++++++++ tools/lib/bpf/libbpf_sched.h | 473 +++++++++++++++++++++++++++ 25 files changed, 2555 insertions(+), 6 deletions(-) create mode 100644 include/linux/bpf_topology.h create mode 100644 kernel/sched/bpf_topology.c create mode 100644 samples/bpf/sched_pick_task_kern.c create mode 100644 samples/bpf/sched_pick_task_user.c create mode 100644 samples/bpf/sched_preempt_kern.c create mode 100644 samples/bpf/sched_preempt_user.c create mode 100644 samples/bpf/sched_select_core_kern.c create mode 100644 samples/bpf/sched_select_core_user.c create mode 100644 tools/lib/bpf/libbpf_sched.h -- 2.20.1

1 21

[PATCH openEuler-5.10 01/31] io_uring:drop identity before creating a private one
by Zheng Zengkai 17 Aug '22

17 Aug '22

From: Li Lingfeng <lilingfeng3(a)huawei.com> hulk inclusion category: bugfix bugzilla: 187387, https://gitee.com/openeuler/kernel/issues/I5KTEM CVE: NA -------------------------------- When we need to create a private copy of io_identity, we will get the use of current task's private structs, whitch means we should increase their reference counts. If we have grabed some other structs before, we should drop them and clear related flags. Otherwise, leak of old structs and uaf of new structs may occur. Signed-off-by: Li Lingfeng <lilingfeng3(a)huawei.com> Reviewed-by: Zhang Yi <yi.zhang(a)huawei.com> Signed-off-by: Zheng Zengkai <zhengzengkai(a)huawei.com> --- fs/io_uring.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/fs/io_uring.c b/fs/io_uring.c index faa81d48c812..257e4af176e6 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -1364,6 +1364,47 @@ static bool io_identity_cow(struct io_kiocb *req) return true; } +static void io_drop_identity(struct io_kiocb *req) +{ + struct io_identity *id = req->work.identity; + + if (req->work.flags & IO_WQ_WORK_MM) { + mmdrop(id->mm); + req->work.flags &= ~IO_WQ_WORK_MM; + } +#ifdef CONFIG_BLK_CGROUP + if (req->work.flags & IO_WQ_WORK_BLKCG) { + css_put(id->blkcg_css); + req->work.flags &= ~IO_WQ_WORK_BLKCG; + } +#endif + if (req->work.flags & IO_WQ_WORK_CREDS) { + put_cred(id->creds); + req->work.flags &= ~IO_WQ_WORK_CREDS; + } + if (req->work.flags & IO_WQ_WORK_FILES) { + put_files_struct(req->work.identity->files); + put_nsproxy(req->work.identity->nsproxy); + req->work.flags &= ~IO_WQ_WORK_FILES; + } + if (req->work.flags & IO_WQ_WORK_CANCEL) + req->work.flags &= ~IO_WQ_WORK_CANCEL; + if (req->work.flags & IO_WQ_WORK_FS) { + struct fs_struct *fs = id->fs; + + spin_lock(&id->fs->lock); + if (--fs->users) + fs = NULL; + spin_unlock(&id->fs->lock); + + if (fs) + free_fs_struct(fs); + req->work.flags &= ~IO_WQ_WORK_FS; + } + if (req->work.flags & IO_WQ_WORK_FSIZE) + req->work.flags &= ~IO_WQ_WORK_FSIZE; +} + static bool io_grab_identity(struct io_kiocb *req) { const struct io_op_def *def = &io_op_defs[req->opcode]; @@ -1469,6 +1510,7 @@ static void io_prep_async_work(struct io_kiocb *req) if (io_grab_identity(req)) return; + io_drop_identity(req); if (!io_identity_cow(req)) return; -- 2.20.1

1 30

CCSA-运营商行业操作系统规范内核SYSCALL学习交流
by 丁强 17 Aug '22

17 Aug '22

各位好，我是移动丁强，目前在中国通信标准化协会（CCSA）中牵头做操作系统相关的行业规范，目前涉及到kernel的SYSCALL特性部分，想和各位学习交流一下，方便的话可以加我微信详谈，我的手机13575459962（微信同号），感谢大家！丁强中国移动通信集团浙江有限公司云计算支撑中心 Mobile: 13575459962 E-mail: 13575459962(a)139.xn--com()-jt2hu4k dingqiang5(a)zj.chinamobile.com

1 0

[PATCH openEuler-5.10-LTS v2 00/82] Backport 5.10.118 LTS
by Zheng Zengkai 17 Aug '22

17 Aug '22

Backport 5.10.118 LTS patches from upstream. git cherry-pick v5.10.117..v5.10.118~1 -s Already merged(5): 911b36267855 floppy: use a statically allocated error counter 55c820c1b2b6 Revert "drm/i915/opregion: check port number bounds for SWSCI display power state" aca18bacdb71 ARM: 9191/1: arm/stacktrace, kasan: Silence KASAN warnings in unwind_frame() f3f2247ac31c Reinstate some of "swiotlb: rework "fix info leak with DMA_FROM_DEVICE"" 3ee8e109c3c3 perf: Fix sys_perf_event_open() race against self Context conflict: 00d8b06a4ed4 rtc: mc146818-lib: Fix the AltCentury for AMD platforms Skiped(1): e2cfa7b0935c Revert "swiotlb: fix info leak with DMA_FROM_DEVICE" KABI changed(8): 633be494c3ca include/uapi/linux/xfrm.h: Fix XFRM_MSG_MAPPING ABI breakage 47f04f95edb1 xfrm: fix "disable_policy" flag use when arriving from different devices 0d2e9d8000ef xfrm: rework default policy structure 57c1bbe7098b xfrm: fix dflt policy check when there is no policy configured 9856c3a129dd xfrm: notify default policy on update 20fd28df4049 xfrm: make user policy API complete ab610ee1d1a1 net: xfrm: fix shift-out-of-bounce 5b7f84b1f9f4 xfrm: Add possibility to set the default to block if we have no policy Total patches: 96 - 5 - 1 - 8 = 82 Al Viro (1): Fix double fget() in vhost_net_set_backend() Alex Elder (1): net: ipa: record proper RX transaction count Andre Przywara (1): rtc: sun6i: Fix time overflow handling Andreas Gruenbacher (1): gfs2: Disable page faults during lockless buffered reads Andrew Lunn (1): net: bridge: Clear offload_fwd_mark when passing frame up bridge interface. Anton Eidelman (1): nvme-multipath: fix hang when disk goes live over reconnect Ard Biesheuvel (2): ARM: 9196/1: spectre-bhb: enable for Cortex-A15 ARM: 9197/1: spectre-bhb: fix loop8 sequence for Thumb2 Catalin Marinas (1): arm64: mte: Ensure the cleared tags are visible before setting the PTE Christophe JAILLET (2): net: systemport: Fix an error handling path in bcm_sysport_probe() net/qla3xxx: Fix a test in ql_reset_work() Codrin Ciubotariu (1): clk: at91: generated: consider range when calculating best rate David Gow (1): um: Cleanup syscall_handler_t definition/cast, fix warning David Howells (1): afs: Fix afs_getattr() to refetch file status if callback break occurred Duoming Zhou (1): NFC: nci: fix sleep in atomic context bugs caused by nci_skb_alloc Felix Fietkau (1): mac80211: fix rx reordering with non explicit / psmp ack policy Gleb Chesnokov (1): scsi: qla2xxx: Fix missed DMA unmap for aborted commands Grant Grundler (4): net: atlantic: fix "frag[0] not initialized" net: atlantic: reduce scope of is_rsc_complete net: atlantic: add check for MAX_SKB_FRAGS net: atlantic: verify hw_head_ lies within TX buffer ring Guo Xuenan (1): fs: fix an infinite loop in iomap_fiemap Haibo Chen (1): gpio: gpio-vf610: do not touch other bits when set the target bit Hangyu Hua (1): drm/dp/mst: fix a possible memory leak in fetch_monitor_name() Harini Katakam (1): net: macb: Increment rx bd head after allocating skb and buffer Hugo Villeneuve (1): rtc: pcf2127: fix bug when reading alarm registers Ilya Dryomov (1): libceph: fix potential use-after-free on linger ping and resends Jae Hyun Yoo (4): ARM: dts: aspeed-g6: remove FWQSPID group in pinctrl dtsi pinctrl: pinctrl-aspeed-g6: remove FWQSPID group in pinctrl ARM: dts: aspeed-g6: fix SPI1/SPI2 quad pin group dt-bindings: pinctrl: aspeed-g6: remove FWQSPID group Jakob Koschel (1): drbd: remove usage of list iterator variable after loop Jeff LaBundy (1): Input: add bounds checking to input_set_capability() Jens Axboe (1): io_uring: always grab file table for deferred statx Jessica Yu (2): module: treat exit sections the same as init sections when !CONFIG_MODULE_UNLOAD module: check for exit sections in layout_sections() instead of module_init_section() Jiasheng Jiang (1): net: af_key: add check for pfkey_broadcast in function pfkey_process Johannes Berg (1): nl80211: fix locking in nl80211_set_tx_bitrate_mask() Jérôme Pouiller (1): dma-buf: fix use of DMA_BUF_SET_NAME_{A,B} in userspace Kai-Heng Feng (1): ALSA: hda/realtek: Enable headset mic on Lenovo P360 Kevin Mitchell (1): igb: skip phy status check where unavailable Kieran Frewen (1): nl80211: validate S1G channel width Krzysztof Kozlowski (1): riscv: dts: sifive: fu540-c000: align dma node name with dtschema Marek Vasut (1): Input: ili210x - fix reset timing Mario Limonciello (1): rtc: mc146818-lib: Fix the AltCentury for AMD platforms Maxim Mikityanskiy (1): net/mlx5e: Properly block LRO when XDP is enabled Michael S. Tsirkin (1): tools/virtio: compile with -pthread Monish Kumar R (1): nvme-pci: add quirks for Samsung X5 SSDs Nicolas Dichtel (1): selftests: add ping test with ping_group_range tuned Niklas Schnelle (1): s390/pci: improve zpci_dev reference counting Ondrej Mosnacek (2): selinux: fix bad cleanup on error in hashtab_duplicate() crypto: qcom-rng - fix infinite loop on requests not multiple of WORD_SZ Paolo Abeni (1): net/sched: act_pedit: sanitize shift argument before usage Paul Greenwalt (1): ice: fix possible under reporting of ethtool Tx and Rx statistics Peter Zijlstra (1): crypto: x86/chacha20 - Avoid spurious jumps to other functions Prakruthi Deepak Heragu (1): arm64: paravirt: Use RCU read locks to guard stolen_time Rafael J. Wysocki (1): PCI/PM: Avoid putting Elo i2 PCIe Ports in D3cold Ryusuke Konishi (2): nilfs2: fix lockdep warnings in page operations for btree nodes nilfs2: fix lockdep warnings during disk space reclamation Sasha Neftin (3): igc: Remove _I_PHY_ID checking igc: Remove phy->type checking igc: Update I226_K device ID Schspa Shi (1): usb: gadget: fix race when gadget driver register via ioctl Sean Christopherson (1): KVM: x86/mmu: Update number of zapped pages even if page list is stable Shreyas K K (1): arm64: Enable repeat tlbi workaround on KRYO4XX gold CPUs Takashi Iwai (2): ALSA: usb-audio: Restore Rane SL-1 quirk ALSA: wavefront: Proper check of get_user() error Thomas Richter (1): perf bench numa: Address compiler error on s390 Tzung-Bi Shih (1): platform/chrome: cros_ec_debugfs: detach log reader wq from devm Uwe Kleine-König (1): gpio: mvebu/pwm: Refuse requests with inverted polarity Vincent Bernat (1): net: evaluate net.ipvX.conf.all.disable_policy and disable_xfrm Vincent Whitchurch (1): rtc: fix use-after-free on device removal Werner Sembach (1): ALSA: hda/realtek: Add quirk for TongFang devices with pop noise Xiaoke Wang (1): MIPS: lantiq: check the return value of kzalloc() Yang Yingliang (3): ethernet: tulip: fix missing pci_disable_device() on error in tulip_init_one() net: stmmac: fix missing pci_disable_device() on error in stmmac_pci_probe() i2c: mt7621: fix missing clk_disable_unprepare() on error in mtk_i2c_probe() Zheng Yongjun (2): Input: stmfts - fix reference leak in stmfts_input_open crypto: stm32 - fix reference leak in stm32_crc_remove Zhu Lingshan (1): vhost_vdpa: don't setup irq offloading when irq_num < 0 Zixuan Fu (2): net: vmxnet3: fix possible use-after-free bugs in vmxnet3_rq_alloc_rx_buf() net: vmxnet3: fix possible NULL pointer dereference in vmxnet3_rq_cleanup() Documentation/arm64/silicon-errata.rst | 3 + .../pinctrl/aspeed,ast2600-pinctrl.yaml | 2 +- arch/arm/boot/dts/aspeed-g6-pinctrl.dtsi | 9 +- arch/arm/kernel/entry-armv.S | 2 +- arch/arm/mm/proc-v7-bugs.c | 1 + arch/arm64/kernel/cpu_errata.c | 2 + arch/arm64/kernel/mte.c | 3 + arch/arm64/kernel/paravirt.c | 29 +- arch/mips/lantiq/falcon/sysctrl.c | 2 + arch/mips/lantiq/xway/gptu.c | 2 + arch/mips/lantiq/xway/sysctrl.c | 46 ++- arch/riscv/boot/dts/sifive/fu540-c000.dtsi | 2 +- arch/s390/pci/pci.c | 1 + arch/s390/pci/pci_bus.h | 3 +- arch/s390/pci/pci_clp.c | 9 +- arch/s390/pci/pci_event.c | 7 +- arch/x86/crypto/chacha-avx512vl-x86_64.S | 4 +- arch/x86/kvm/mmu/mmu.c | 10 +- arch/x86/um/shared/sysdep/syscalls_64.h | 5 +- drivers/block/drbd/drbd_main.c | 7 +- drivers/clk/at91/clk-generated.c | 4 + drivers/crypto/qcom-rng.c | 1 + drivers/crypto/stm32/stm32-crc32.c | 4 +- drivers/gpio/gpio-mvebu.c | 3 + drivers/gpio/gpio-vf610.c | 8 +- drivers/gpu/drm/drm_dp_mst_topology.c | 1 + drivers/i2c/busses/i2c-mt7621.c | 10 +- drivers/input/input.c | 19 ++ drivers/input/touchscreen/ili210x.c | 4 +- drivers/input/touchscreen/stmfts.c | 8 +- .../net/ethernet/aquantia/atlantic/aq_ring.c | 20 +- .../aquantia/atlantic/hw_atl/hw_atl_b0.c | 7 + drivers/net/ethernet/broadcom/bcmsysport.c | 6 +- drivers/net/ethernet/cadence/macb_main.c | 2 +- drivers/net/ethernet/dec/tulip/tulip_core.c | 5 +- drivers/net/ethernet/intel/ice/ice_main.c | 7 +- drivers/net/ethernet/intel/igb/igb_main.c | 3 +- drivers/net/ethernet/intel/igc/igc_base.c | 10 +- drivers/net/ethernet/intel/igc/igc_hw.h | 1 + drivers/net/ethernet/intel/igc/igc_main.c | 18 +- drivers/net/ethernet/intel/igc/igc_phy.c | 6 +- .../net/ethernet/mellanox/mlx5/core/en_main.c | 7 + drivers/net/ethernet/qlogic/qla3xxx.c | 3 +- .../net/ethernet/stmicro/stmmac/stmmac_pci.c | 4 +- drivers/net/ipa/gsi.c | 6 +- drivers/net/vmxnet3/vmxnet3_drv.c | 6 + drivers/nvme/host/core.c | 1 + drivers/nvme/host/multipath.c | 25 +- drivers/nvme/host/nvme.h | 4 + drivers/nvme/host/pci.c | 5 +- drivers/pci/pci.c | 10 + drivers/pinctrl/aspeed/pinctrl-aspeed-g6.c | 14 +- drivers/platform/chrome/cros_ec_debugfs.c | 12 +- drivers/rtc/class.c | 9 + drivers/rtc/rtc-mc146818-lib.c | 16 +- drivers/rtc/rtc-pcf2127.c | 3 +- drivers/rtc/rtc-sun6i.c | 14 +- drivers/scsi/qla2xxx/qla_target.c | 3 + drivers/usb/gadget/legacy/raw_gadget.c | 2 + drivers/vhost/net.c | 15 +- drivers/vhost/vdpa.c | 5 +- fs/afs/inode.c | 14 +- fs/gfs2/file.c | 4 +- fs/io_uring.c | 6 +- fs/ioctl.c | 2 +- fs/nilfs2/btnode.c | 23 +- fs/nilfs2/btnode.h | 1 + fs/nilfs2/btree.c | 27 +- fs/nilfs2/dat.c | 4 +- fs/nilfs2/gcinode.c | 7 +- fs/nilfs2/inode.c | 159 ++++++++- fs/nilfs2/mdt.c | 43 ++- fs/nilfs2/mdt.h | 6 +- fs/nilfs2/nilfs.h | 16 +- fs/nilfs2/page.c | 7 +- fs/nilfs2/segment.c | 9 +- fs/nilfs2/super.c | 5 +- include/linux/ceph/osd_client.h | 3 + include/linux/mc146818rtc.h | 2 + include/uapi/linux/dma-buf.h | 4 +- kernel/module.c | 18 +- net/bridge/br_input.c | 7 + net/ceph/osd_client.c | 302 +++++++----------- net/ipv4/route.c | 12 +- net/key/af_key.c | 6 +- net/mac80211/rx.c | 3 +- net/nfc/nci/data.c | 2 +- net/nfc/nci/hci.c | 4 +- net/sched/act_pedit.c | 4 + net/wireless/nl80211.c | 18 +- security/selinux/ss/hashtab.c | 3 +- sound/isa/wavefront/wavefront_synth.c | 3 +- sound/pci/hda/patch_realtek.c | 9 + sound/usb/quirks-table.h | 9 + tools/perf/bench/numa.c | 2 +- tools/testing/selftests/net/fcnal-test.sh | 12 + tools/virtio/Makefile | 3 +- 97 files changed, 786 insertions(+), 433 deletions(-) -- 2.20.1

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