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* mmotm 2020-05-05-15-28 uploaded
@ 2020-05-05 22:29 akpm
       [not found] ` <36dc367a-f647-4ee8-a327-d1c3457a7940@infradead.org>
  0 siblings, 1 reply; 4+ messages in thread
From: akpm @ 2020-05-05 22:29 UTC (permalink / raw)
  To: broonie, linux-fsdevel, linux-kernel, linux-mm, linux-next,
	mhocko, mm-commits, sfr

The mm-of-the-moment snapshot 2020-05-05-15-28 has been uploaded to

   http://www.ozlabs.org/~akpm/mmotm/

mmotm-readme.txt says

README for mm-of-the-moment:

http://www.ozlabs.org/~akpm/mmotm/

This is a snapshot of my -mm patch queue.  Uploaded at random hopefully
more than once a week.

You will need quilt to apply these patches to the latest Linus release (5.x
or 5.x-rcY).  The series file is in broken-out.tar.gz and is duplicated in
http://ozlabs.org/~akpm/mmotm/series

The file broken-out.tar.gz contains two datestamp files: .DATE and
.DATE-yyyy-mm-dd-hh-mm-ss.  Both contain the string yyyy-mm-dd-hh-mm-ss,
followed by the base kernel version against which this patch series is to
be applied.

This tree is partially included in linux-next.  To see which patches are
included in linux-next, consult the `series' file.  Only the patches
within the #NEXT_PATCHES_START/#NEXT_PATCHES_END markers are included in
linux-next.


A full copy of the full kernel tree with the linux-next and mmotm patches
already applied is available through git within an hour of the mmotm
release.  Individual mmotm releases are tagged.  The master branch always
points to the latest release, so it's constantly rebasing.

	https://github.com/hnaz/linux-mm

The directory http://www.ozlabs.org/~akpm/mmots/ (mm-of-the-second)
contains daily snapshots of the -mm tree.  It is updated more frequently
than mmotm, and is untested.

A git copy of this tree is also available at

	https://github.com/hnaz/linux-mm



This mmotm tree contains the following patches against 5.7-rc4:
(patches marked "*" will be included in linux-next)

  origin.patch
* checkpatch-test-git_dir-changes.patch
* proc-kpageflags-prevent-an-integer-overflow-in-stable_page_flags.patch
* proc-kpageflags-do-not-use-uninitialized-struct-pages.patch
* ipc-mqueuec-change-__do_notify-to-bypass-check_kill_permission-v2.patch
* mm-memcg-fix-error-return-value-of-mem_cgroup_css_alloc.patch
* mm-memcg-fix-error-return-value-of-mem_cgroup_css_alloc-fix.patch
* kcov-cleanup-debug-messages.patch
* kcov-fix-potential-use-after-free-in-kcov_remote_start.patch
* kcov-move-t-kcov-assignments-into-kcov_start-stop.patch
* kcov-move-t-kcov_sequence-assignment.patch
* kcov-use-t-kcov_mode-as-enabled-indicator.patch
* kcov-collect-coverage-from-interrupts.patch
* usb-core-kcov-collect-coverage-from-usb-complete-callback.patch
* mm-page_alloc-fix-watchdog-soft-lockups-during-set_zone_contiguous.patch
* kernel-kcovc-fix-typos-in-kcov_remote_start-documentation.patch
* scripts-decodecode-fix-trapping-instruction-formatting.patch
* kvm-svm-change-flag-passed-to-gup-fast-in-sev_pin_memory.patch
* memcg-optimize-memorynuma_stat-like-memorystat.patch
* eventpoll-fix-missing-wakeup-for-ovflist-in-ep_poll_callback.patch
* eventpoll-fix-missing-wakeup-for-ovflist-in-ep_poll_callback-v2.patch
* scripts-gdb-repair-rb_first-and-rb_last.patch
* mm-slub-fix-incorrect-interpretation-of-s-offset.patch
* percpu-make-pcpu_alloc-aware-of-current-gfp-context.patch
* kselftests-introduce-new-epoll60-testcase-for-catching-lost-wakeups.patch
* epoll-atomically-remove-wait-entry-on-wake-up.patch
* mm-vmscan-remove-unnecessary-argument-description-of-isolate_lru_pages.patch
* ubsan-disable-ubsan_alignment-under-compile_test.patch
* mm-limit-boost_watermark-on-small-zones.patch
* mm-memcg-fix-inconsistent-oom-event-behavior.patch
* epoll-call-final-ep_events_available-check-under-the-lock.patch
* mm-gup-fix-fixup_user_fault-on-multiple-retries.patch
* scripts-support-compiled-source-improved-precise.patch
* scripts-add-a-intermediate-file-for-make-gtags.patch
* squashfs-migrate-from-ll_rw_block-usage-to-bio.patch
* squashfs-migrate-from-ll_rw_block-usage-to-bio-fix.patch
* ocfs2-add-missing-annotation-for-dlm_empty_lockres.patch
* ocfs2-mount-shared-volume-without-ha-stack.patch
* drivers-tty-serial-sh-scic-suppress-uninitialized-var-warning.patch
* ramfs-support-o_tmpfile.patch
* vfs-track-per-sb-writeback-errors-and-report-them-to-syncfs.patch
* buffer-record-blockdev-write-errors-in-super_block-that-it-backs.patch
* kernel-watchdog-flush-all-printk-nmi-buffers-when-hardlockup-detected.patch
  mm.patch
* usercopy-mark-dma-kmalloc-caches-as-usercopy-caches.patch
* mm-slub-fix-corrupted-freechain-in-deactivate_slab.patch
* mm-slub-fix-corrupted-freechain-in-deactivate_slab-fix.patch
* slub-remove-userspace-notifier-for-cache-add-remove.patch
* slub-remove-kmalloc-under-list_lock-from-list_slab_objects.patch
* mm-slub-fix-stack-overruns-with-slub_stats.patch
* mm-slub-add-panic_on_error-to-the-debug-facilities.patch
* mm-slub-add-panic_on_error-to-the-debug-facilities-fix.patch
* slub-limit-count-of-partial-slabs-scanned-to-gather-statistics.patch
* mm-dump_page-do-not-crash-with-invalid-mapping-pointer.patch
* mm-move-readahead-prototypes-from-mmh.patch
* mm-return-void-from-various-readahead-functions.patch
* mm-ignore-return-value-of-readpages.patch
* mm-move-readahead-nr_pages-check-into-read_pages.patch
* mm-add-new-readahead_control-api.patch
* mm-use-readahead_control-to-pass-arguments.patch
* mm-rename-various-offset-parameters-to-index.patch
* mm-rename-readahead-loop-variable-to-i.patch
* mm-remove-page_offset-from-readahead-loop.patch
* mm-put-readahead-pages-in-cache-earlier.patch
* mm-add-readahead-address-space-operation.patch
* mm-move-end_index-check-out-of-readahead-loop.patch
* mm-add-page_cache_readahead_unbounded.patch
* mm-document-why-we-dont-set-pagereadahead.patch
* mm-use-memalloc_nofs_save-in-readahead-path.patch
* fs-convert-mpage_readpages-to-mpage_readahead.patch
* btrfs-convert-from-readpages-to-readahead.patch
* erofs-convert-uncompressed-files-from-readpages-to-readahead.patch
* erofs-convert-compressed-files-from-readpages-to-readahead.patch
* ext4-convert-from-readpages-to-readahead.patch
* ext4-pass-the-inode-to-ext4_mpage_readpages.patch
* f2fs-convert-from-readpages-to-readahead.patch
* f2fs-pass-the-inode-to-f2fs_mpage_readpages.patch
* fuse-convert-from-readpages-to-readahead.patch
* fuse-convert-from-readpages-to-readahead-fix.patch
* iomap-convert-from-readpages-to-readahead.patch
* mm-gupc-updating-the-documentation.patch
* mm-gupc-updating-the-documentation-fix.patch
* mm-swapfile-use-list_prevnext_entry-instead-of-open-coding.patch
* mm-swap_state-fix-a-data-race-in-swapin_nr_pages.patch
* mm-swap-properly-update-readahead-statistics-in-unuse_pte_range.patch
* mm-swapfilec-offset-is-only-used-when-there-is-more-slots.patch
* mm-swapfilec-explicitly-show-ssd-non-ssd-is-handled-mutually-exclusive.patch
* mm-swapfilec-remove-the-unnecessary-goto-for-ssd-case.patch
* mm-swapfilec-simplify-the-calculation-of-n_goal.patch
* mm-swapfilec-remove-the-extra-check-in-scan_swap_map_slots.patch
* mm-swapfilec-found_free-could-be-represented-by-tmp-max.patch
* mm-swapfilec-tmp-is-always-smaller-than-max.patch
* mm-swapfilec-omit-a-duplicate-code-by-compare-tmp-and-max-first.patch
* swap-try-to-scan-more-free-slots-even-when-fragmented.patch
* mm-swapfilec-classify-swap_map_xxx-to-make-it-more-readable.patch
* mm-swapfilec-classify-swap_map_xxx-to-make-it-more-readable-fix.patch
* mm-swapfilec-__swap_entry_free-always-free-1-entry.patch
* mm-memcg-add-workingset_restore-in-memorystat.patch
* mm-memcg-avoid-stale-protection-values-when-cgroup-is-above-protection.patch
* mm-memcg-decouple-elowmin-state-mutations-from-protection-checks.patch
* h8300-remove-usage-of-__arch_use_5level_hack.patch
* arm-add-support-for-folded-p4d-page-tables.patch
* arm64-add-support-for-folded-p4d-page-tables.patch
* arm64-add-support-for-folded-p4d-page-tables-fix.patch
* hexagon-remove-__arch_use_5level_hack.patch
* ia64-add-support-for-folded-p4d-page-tables.patch
* nios2-add-support-for-folded-p4d-page-tables.patch
* openrisc-add-support-for-folded-p4d-page-tables.patch
* powerpc-add-support-for-folded-p4d-page-tables.patch
* powerpc-add-support-for-folded-p4d-page-tables-fix.patch
* sh-fault-modernize-printing-of-kernel-messages.patch
* sh-drop-__pxd_offset-macros-that-duplicate-pxd_index-ones.patch
* sh-add-support-for-folded-p4d-page-tables.patch
* unicore32-remove-__arch_use_5level_hack.patch
* asm-generic-remove-pgtable-nop4d-hackh.patch
* mm-remove-__arch_has_5level_hack-and-include-asm-generic-5level-fixuph.patch
* mm-gupc-further-document-vma_permits_fault.patch
* proc-pid-smaps-add-pmd-migration-entry-parsing.patch
* mm-mmap-fix-the-adjusted-length-error.patch
* mm-memory-remove-unnecessary-pte_devmap-case-in-copy_one_pte.patch
* x86-hyperv-use-vmalloc_exec-for-the-hypercall-page.patch
* x86-fix-vmap-arguments-in-map_irq_stack.patch
* staging-android-ion-use-vmap-instead-of-vm_map_ram.patch
* staging-media-ipu3-use-vmap-instead-of-reimplementing-it.patch
* dma-mapping-use-vmap-insted-of-reimplementing-it.patch
* powerpc-add-an-ioremap_phb-helper.patch
* powerpc-remove-__ioremap_at-and-__iounmap_at.patch
* mm-remove-__get_vm_area.patch
* mm-unexport-unmap_kernel_range_noflush.patch
* mm-rename-config_pgtable_mapping-to-config_zsmalloc_pgtable_mapping.patch
* mm-only-allow-page-table-mappings-for-built-in-zsmalloc.patch
* mm-pass-addr-as-unsigned-long-to-vb_free.patch
* mm-remove-vmap_page_range_noflush-and-vunmap_page_range.patch
* mm-rename-vmap_page_range-to-map_kernel_range.patch
* mm-dont-return-the-number-of-pages-from-map_kernel_range_noflush.patch
* mm-remove-map_vm_range.patch
* mm-remove-unmap_vmap_area.patch
* mm-remove-the-prot-argument-from-vm_map_ram.patch
* mm-enforce-that-vmap-cant-map-pages-executable.patch
* gpu-drm-remove-the-powerpc-hack-in-drm_legacy_sg_alloc.patch
* mm-remove-the-pgprot-argument-to-__vmalloc.patch
* mm-remove-the-prot-argument-to-__vmalloc_node.patch
* mm-remove-both-instances-of-__vmalloc_node_flags.patch
* mm-remove-__vmalloc_node_flags_caller.patch
* mm-remove-__vmalloc_node_flags_caller-fix.patch
* mm-switch-the-test_vmalloc-module-to-use-__vmalloc_node.patch
* mm-switch-the-test_vmalloc-module-to-use-__vmalloc_node-fix.patch
* mm-switch-the-test_vmalloc-module-to-use-__vmalloc_node-fix-fix.patch
* mm-remove-vmalloc_user_node_flags.patch
* mm-remove-vmalloc_user_node_flags-fix.patch
* arm64-use-__vmalloc_node-in-arch_alloc_vmap_stack.patch
* powerpc-use-__vmalloc_node-in-alloc_vm_stack.patch
* s390-use-__vmalloc_node-in-stack_alloc.patch
* mm-init-report-kasan-tag-information-stored-in-page-flags.patch
* kasan-stop-tests-being-eliminated-as-dead-code-with-fortify_source.patch
* kasan-stop-tests-being-eliminated-as-dead-code-with-fortify_source-v4.patch
* stringh-fix-incompatibility-between-fortify_source-and-kasan.patch
* mm-clarify-__gfp_memalloc-usage.patch
* mm-memblock-replace-dereferences-of-memblock_regionnid-with-api-calls.patch
* mm-make-early_pfn_to_nid-and-related-defintions-close-to-each-other.patch
* mm-remove-config_have_memblock_node_map-option.patch
* mm-free_area_init-use-maximal-zone-pfns-rather-than-zone-sizes.patch
* mm-use-free_area_init-instead-of-free_area_init_nodes.patch
* alpha-simplify-detection-of-memory-zone-boundaries.patch
* arm-simplify-detection-of-memory-zone-boundaries.patch
* arm64-simplify-detection-of-memory-zone-boundaries-for-uma-configs.patch
* csky-simplify-detection-of-memory-zone-boundaries.patch
* m68k-mm-simplify-detection-of-memory-zone-boundaries.patch
* parisc-simplify-detection-of-memory-zone-boundaries.patch
* sparc32-simplify-detection-of-memory-zone-boundaries.patch
* unicore32-simplify-detection-of-memory-zone-boundaries.patch
* xtensa-simplify-detection-of-memory-zone-boundaries.patch
* mm-memmap_init-iterate-over-memblock-regions-rather-that-check-each-pfn.patch
* mm-memmap_init-iterate-over-memblock-regions-rather-that-check-each-pfn-fix.patch
* mm-remove-early_pfn_in_nid-and-config_nodes_span_other_nodes.patch
* mm-free_area_init-allow-defining-max_zone_pfn-in-descending-order.patch
* mm-free_area_init-allow-defining-max_zone_pfn-in-descending-order-fix.patch
* mm-rename-free_area_init_node-to-free_area_init_memoryless_node.patch
* mm-clean-up-free_area_init_node-and-its-helpers.patch
* mm-simplify-find_min_pfn_with_active_regions.patch
* docs-vm-update-memory-models-documentation.patch
* mm-page_allocc-bad_-is-not-necessary-when-pagehwpoison.patch
* mm-page_allocc-bad_flags-is-not-necessary-for-bad_page.patch
* mm-page_allocc-rename-free_pages_check_bad-to-check_free_page_bad.patch
* mm-page_allocc-rename-free_pages_check-to-check_free_page.patch
* mm-page_allocc-extract-check__page_bad-common-part-to-page_bad_reason.patch
* mmpage_alloccma-conditionally-prefer-cma-pageblocks-for-movable-allocations.patch
* mmpage_alloccma-conditionally-prefer-cma-pageblocks-for-movable-allocations-fix.patch
* mm-call-touch_nmi_watchdog-on-max-order-boundaries-in-deferred-init.patch
* mm-initialize-deferred-pages-with-interrupts-enabled.patch
* mm-call-cond_resched-from-deferred_init_memmap.patch
* mm-remove-unused-free_bootmem_with_active_regions.patch
* mm-page_allocc-only-tune-sysctl_lowmem_reserve_ratio-value-once-when-changing-it.patch
* mm-page_allocc-clear-out-zone-lowmem_reserve-if-the-zone-is-empty.patch
* mm-vmstatc-do-not-show-lowmem-reserve-protection-information-of-empty-zone.patch
* mm-page_alloc-use-ac-high_zoneidx-for-classzone_idx.patch
* mm-page_alloc-integrate-classzone_idx-and-high_zoneidx.patch
* mm-page_allocc-use-node_mask_none-in-build_zonelists.patch
* mm-rename-gfpflags_to_migratetype-to-gfp_migratetype-for-same-convention.patch
* mm-vmscanc-use-update_lru_size-in-update_lru_sizes.patch
* mm-vmscan-count-layzfree-pages-and-fix-nr_isolated_-mismatch.patch
* mm-vmscanc-change-prototype-for-shrink_page_list.patch
* mm-vmscan-update-the-comment-of-should_continue_reclaim.patch
* tools-vm-page_owner_sort-filter-out-unneeded-line.patch
* mm-mempolicy-fix-up-gup-usage-in-lookup_node.patch
* hugetlb_cgroup-remove-unused-variable-i.patch
* khugepaged-add-self-test.patch
* khugepaged-add-self-test-fix.patch
* khugepaged-add-self-test-fix-2.patch
* khugepaged-add-self-test-fix-2-fix.patch
* khugepaged-do-not-stop-collapse-if-less-than-half-ptes-are-referenced.patch
* khugepaged-drain-all-lru-caches-before-scanning-pages.patch
* khugepaged-drain-lru-add-pagevec-after-swapin.patch
* khugepaged-allow-to-collapse-a-page-shared-across-fork.patch
* khugepaged-allow-to-collapse-pte-mapped-compound-pages.patch
* thp-change-cow-semantics-for-anon-thp.patch
* khugepaged-introduce-max_ptes_shared-tunable.patch
* khugepaged-introduce-max_ptes_shared-tunable-fix.patch
* hugetlbfs-add-arch_hugetlb_valid_size.patch
* hugetlbfs-move-hugepagesz=-parsing-to-arch-independent-code.patch
* hugetlbfs-remove-hugetlb_add_hstate-warning-for-existing-hstate.patch
* hugetlbfs-remove-hugetlb_add_hstate-warning-for-existing-hstate-fix.patch
* hugetlbfs-clean-up-command-line-processing.patch
* hugetlbfs-move-hugepagesz=-parsing-to-arch-independent-code-fix.patch
* mm-hugetlb-avoid-unnecessary-check-on-pud-and-pmd-entry-in-huge_pte_offset.patch
* arch-kmap-remove-bug_on.patch
* arch-xtensa-move-kmap-build-bug-out-of-the-way.patch
* arch-kmap-remove-redundant-arch-specific-kmaps.patch
* arch-kunmap-remove-duplicate-kunmap-implementations.patch
* x86powerpcmicroblaze-kmap-move-preempt-disable.patch
* arch-kmap_atomic-consolidate-duplicate-code.patch
* arch-kunmap_atomic-consolidate-duplicate-code.patch
* arch-kmap-ensure-kmap_prot-visibility.patch
* arch-kmap-dont-hard-code-kmap_prot-values.patch
* arch-kmap-define-kmap_atomic_prot-for-all-archs.patch
* drm-remove-drm-specific-kmap_atomic-code.patch
* kmap-remove-kmap_atomic_to_page.patch
* parisc-kmap-remove-duplicate-kmap-code.patch
* mm-thp-dont-need-drain-lru-cache-when-splitting-and-mlocking-thp.patch
* powerpc-mm-drop-platform-defined-pmd_mknotpresent.patch
* mm-thp-rename-pmd_mknotpresent-as-pmd_mknotvalid.patch
* mm-thp-rename-pmd_mknotpresent-as-pmd_mkinvalid-v2.patch
* drivers-base-memoryc-cache-memory-blocks-in-xarray-to-accelerate-lookup.patch
* drivers-base-memoryc-cache-memory-blocks-in-xarray-to-accelerate-lookup-fix.patch
* mm-add-debug_wx-support.patch
* mm-add-debug_wx-support-fixpatch-added-to-mm-tree.patch
* riscv-support-debug_wx.patch
* riscv-support-debug_wx-fix.patch
* x86-mm-use-arch_has_debug_wx-instead-of-arch-defined.patch
* arm64-mm-use-arch_has_debug_wx-instead-of-arch-defined.patch
* mm-add-kvfree_sensitive-for-freeing-sensitive-data-objects.patch
* mm-memory_hotplug-refrain-from-adding-memory-into-an-impossible-node.patch
* powerpc-pseries-hotplug-memory-stop-checking-is_mem_section_removable.patch
* mm-memory_hotplug-remove-is_mem_section_removable.patch
* mm-memory_hotplug-set-node_start_pfn-of-hotadded-pgdat-to-0.patch
* mm-memory_hotplug-handle-memblocks-only-with-config_arch_keep_memblock.patch
* mm-replace-zero-length-array-with-flexible-array-member.patch
* mm-replace-zero-length-array-with-flexible-array-member-fix.patch
* mm-memory_hotplug-fix-a-typo-in-comment-recoreded-recorded.patch
* mm-ksm-fix-a-typo-in-comment-alreaady-already.patch
* mm-ksm-fix-a-typo-in-comment-alreaady-already-v2.patch
* mm-mmap-fix-a-typo-in-comment-compatbility-compatibility.patch
* mm-hugetlb-fix-a-typo-in-comment-manitained-maintained.patch
* mm-hugetlb-fix-a-typo-in-comment-manitained-maintained-v2.patch
* mm-hugetlb-fix-a-typo-in-comment-manitained-maintained-v2-checkpatch-fixes.patch
* mm-vmsan-fix-some-typos-in-comment.patch
* mm-compaction-fix-a-typo-in-comment-pessemistic-pessimistic.patch
* mm-memblock-fix-a-typo-in-comment-implict-implicit.patch
* mm-list_lru-fix-a-typo-in-comment-numbesr-numbers.patch
* mm-filemap-fix-a-typo-in-comment-unneccssary-unnecessary.patch
* mm-frontswap-fix-some-typos-in-frontswapc.patch
* mm-memcg-fix-some-typos-in-memcontrolc.patch
* mm-fix-a-typo-in-comment-strucure-structure.patch
* mm-slub-fix-a-typo-in-comment-disambiguiation-disambiguation.patch
* mm-sparse-fix-a-typo-in-comment-convienence-convenience.patch
* mm-page-writeback-fix-a-typo-in-comment-effictive-effective.patch
* mm-memory-fix-a-typo-in-comment-attampt-attempt.patch
* mm-use-false-for-bool-variable.patch
* mm-return-true-in-cpupid_pid_unset.patch
* info-task-hung-in-generic_file_write_iter.patch
* info-task-hung-in-generic_file_write-fix.patch
* kernel-hung_taskc-monitor-killed-tasks.patch
* proc-rename-catch-function-argument.patch
* x86-mm-define-mm_p4d_folded.patch
* mm-debug-add-tests-validating-architecture-page-table-helpers.patch
* mm-debug-add-tests-validating-architecture-page-table-helpers-v17.patch
* mm-debug-add-tests-validating-architecture-page-table-helpers-v18.patch
* userc-make-uidhash_table-static.patch
* dynamic_debug-add-an-option-to-enable-dynamic-debug-for-modules-only.patch
* dynamic_debug-add-an-option-to-enable-dynamic-debug-for-modules-only-v2.patch
* get_maintainer-add-email-addresses-from-yaml-files.patch
* bitops-avoid-clang-shift-count-overflow-warnings.patch
* lib-math-avoid-trailing-n-hidden-in-pr_fmt.patch
* lib-add-might_fault-to-strncpy_from_user.patch
* lib-optimize-cpumask_local_spread.patch
* lib-test_lockupc-make-test_inode-static.patch
* checkpatch-additional-maintainer-section-entry-ordering-checks.patch
* checkpatch-look-for-c99-comments-in-ctx_locate_comment.patch
* checkpatch-disallow-git-and-file-fix.patch
* checkpatch-use-patch-subject-when-reading-from-stdin.patch
* fs-binfmt_elf-remove-redundant-elf_map-ifndef.patch
* elfnote-mark-all-note-sections-shf_alloc.patch
* fs-binfmt_elfc-allocate-initialized-memory-in-fill_thread_core_info.patch
* fat-dont-allow-to-mount-if-the-fat-length-==-0.patch
* fat-improve-the-readahead-for-fat-entries.patch
* fs-seq_filec-seq_read-update-pr_info_ratelimited.patch
* exec-simplify-the-copy_strings_kernel-calling-convention.patch
* exec-open-code-copy_string_kernel.patch
* umh-fix-refcount-underflow-in-fork_usermode_blob.patch
* kexec-prevent-removal-of-memory-in-use-by-a-loaded-kexec-image.patch
* mm-memory_hotplug-allow-arch-override-of-non-boot-memory-resource-names.patch
* arm64-memory-give-hotplug-memory-a-different-resource-name.patch
* rapidio-avoid-data-race-between-file-operation-callbacks-and-mport_cdev_add.patch
* kernel-relayc-fix-read_pos-error-when-multiple-readers.patch
* aio-simplify-read_events.patch
* add-kernel-config-option-for-twisting-kernel-behavior.patch
* twist-allow-disabling-k_spec-function-in-drivers-tty-vt-keyboardc.patch
* twist-add-option-for-selecting-twist-options-for-syzkallers-testing.patch
* selftests-x86-pkeys-move-selftests-to-arch-neutral-directory.patch
* selftests-vm-pkeys-rename-all-references-to-pkru-to-a-generic-name.patch
* selftests-vm-pkeys-move-generic-definitions-to-header-file.patch
* selftests-vm-pkeys-move-some-definitions-to-arch-specific-header.patch
* selftests-vm-pkeys-make-gcc-check-arguments-of-sigsafe_printf.patch
* selftests-vm-pkeys-use-sane-types-for-pkey-register.patch
* selftests-vm-pkeys-add-helpers-for-pkey-bits.patch
* selftests-vm-pkeys-fix-pkey_disable_clear.patch
* selftests-vm-pkeys-fix-assertion-in-pkey_disable_set-clear.patch
* selftests-vm-pkeys-fix-alloc_random_pkey-to-make-it-really-random.patch
* selftests-vm-pkeys-use-the-correct-huge-page-size.patch
* selftests-vm-pkeys-introduce-generic-pkey-abstractions.patch
* selftests-vm-pkeys-introduce-powerpc-support.patch
* selftests-vm-pkeys-fix-number-of-reserved-powerpc-pkeys.patch
* selftests-vm-pkeys-fix-assertion-in-test_pkey_alloc_exhaust.patch
* selftests-vm-pkeys-improve-checks-to-determine-pkey-support.patch
* selftests-vm-pkeys-associate-key-on-a-mapped-page-and-detect-access-violation.patch
* selftests-vm-pkeys-associate-key-on-a-mapped-page-and-detect-write-violation.patch
* selftests-vm-pkeys-detect-write-violation-on-a-mapped-access-denied-key-page.patch
* selftests-vm-pkeys-introduce-a-sub-page-allocator.patch
* selftests-vm-pkeys-test-correct-behaviour-of-pkey-0.patch
* selftests-vm-pkeys-override-access-right-definitions-on-powerpc.patch
* selftests-vm-pkeys-use-the-correct-page-size-on-powerpc.patch
* selftests-vm-pkeys-fix-multilib-builds-for-x86.patch
* tools-testing-selftests-vm-remove-duplicate-headers.patch
* ubsan-fix-gcc-10-warnings.patch
* initramfs-fix-another-section-mismatch.patch
* ipc-msg-add-missing-annotation-for-freeque.patch
* ipc-use-a-work-queue-to-free_ipc.patch
* ipc-convert-ipcs_idr-to-xarray.patch
* ipc-convert-ipcs_idr-to-xarray-update.patch
  linux-next.patch
  linux-next-rejects.patch
* arch-x86-makefile-use-config_shell.patch
* powerpc-spufs-fix-copy_to_user-while-atomic.patch
* powerpc-spufs-stop-using-access_ok.patch
* powerpc-spufs-simplify-spufs-core-dumping.patch
* signal-refactor-copy_siginfo_to_user32.patch
* binfmt_elf-remove-the-set_fs-in-fill_siginfo_note.patch
* binfmt_elf-remove-the-set_fskernel_ds-in-elf_core_dump.patch
* binfmt_elf_fdpic-remove-the-set_fskernel_ds-in-elf_fdpic_core_dump.patch
* xarrayh-correct-return-code-for-xa_store_bhirq.patch
* kernel-sysctl-support-setting-sysctl-parameters-from-kernel-command-line.patch
* kernel-sysctl-support-handling-command-line-aliases.patch
* kernel-hung_task-convert-hung_task_panic-boot-parameter-to-sysctl.patch
* tools-testing-selftests-sysctl-sysctlsh-support-config_test_sysctl=y.patch
* lib-test_sysctl-support-testing-of-sysctl-boot-parameter.patch
* parisc-add-sysctl-file-interface-panic_on_stackoverflow.patch
* kernel-hung_taskc-introduce-sysctl-to-print-all-traces-when-a-hung-task-is-detected.patch
* panic-add-sysctl-to-dump-all-cpus-backtraces-on-oops-event.patch
* sysctl-fix-unused-function-warning.patch
* amdgpu-a-null-mm-does-not-mean-a-thread-is-a-kthread.patch
* kernel-move-use_mm-unuse_mm-to-kthreadc.patch
* kernel-move-use_mm-unuse_mm-to-kthreadc-v2.patch
* kernel-better-document-the-use_mm-unuse_mm-api-contract.patch
* kernel-better-document-the-use_mm-unuse_mm-api-contract-v2.patch
* kernel-better-document-the-use_mm-unuse_mm-api-contract-v2-fix.patch
* kernel-set-user_ds-in-kthread_use_mm.patch
* mm-kmemleak-silence-kcsan-splats-in-checksum.patch
* kallsyms-printk-add-loglvl-to-print_ip_sym.patch
* alpha-add-show_stack_loglvl.patch
* arc-add-show_stack_loglvl.patch
* arm-asm-add-loglvl-to-c_backtrace.patch
* arm-add-loglvl-to-unwind_backtrace.patch
* arm-add-loglvl-to-dump_backtrace.patch
* arm-wire-up-dump_backtrace_entrystm.patch
* arm-add-show_stack_loglvl.patch
* arm64-add-loglvl-to-dump_backtrace.patch
* arm64-add-show_stack_loglvl.patch
* c6x-add-show_stack_loglvl.patch
* csky-add-show_stack_loglvl.patch
* h8300-add-show_stack_loglvl.patch
* hexagon-add-show_stack_loglvl.patch
* ia64-pass-log-level-as-arg-into-ia64_do_show_stack.patch
* ia64-add-show_stack_loglvl.patch
* m68k-add-show_stack_loglvl.patch
* microblaze-add-loglvl-to-microblaze_unwind_inner.patch
* microblaze-add-loglvl-to-microblaze_unwind.patch
* microblaze-add-show_stack_loglvl.patch
* mips-add-show_stack_loglvl.patch
* nds32-add-show_stack_loglvl.patch
* nios2-add-show_stack_loglvl.patch
* openrisc-add-show_stack_loglvl.patch
* parisc-add-show_stack_loglvl.patch
* powerpc-add-show_stack_loglvl.patch
* riscv-add-show_stack_loglvl.patch
* s390-add-show_stack_loglvl.patch
* sh-add-loglvl-to-dump_mem.patch
* sh-remove-needless-printk.patch
* sh-add-loglvl-to-printk_address.patch
* sh-add-loglvl-to-show_trace.patch
* sh-add-show_stack_loglvl.patch
* sparc-add-show_stack_loglvl.patch
* um-sysrq-remove-needless-variable-sp.patch
* um-add-show_stack_loglvl.patch
* unicore32-remove-unused-pmode-argument-in-c_backtrace.patch
* unicore32-add-loglvl-to-c_backtrace.patch
* unicore32-add-show_stack_loglvl.patch
* x86-add-missing-const-qualifiers-for-log_lvl.patch
* x86-add-show_stack_loglvl.patch
* xtensa-add-loglvl-to-show_trace.patch
* xtensa-add-show_stack_loglvl.patch
* sysrq-use-show_stack_loglvl.patch
* x86-amd_gart-print-stacktrace-for-a-leak-with-kern_err.patch
* power-use-show_stack_loglvl.patch
* kdb-dont-play-with-console_loglevel.patch
* sched-print-stack-trace-with-kern_info.patch
* kernel-use-show_stack_loglvl.patch
* kernel-rename-show_stack_loglvl-=-show_stack.patch
* mm-frontswap-mark-various-intentional-data-races.patch
* mm-page_io-mark-various-intentional-data-races.patch
* mm-page_io-mark-various-intentional-data-races-v2.patch
* mm-swap_state-mark-various-intentional-data-races.patch
* mm-filemap-fix-a-data-race-in-filemap_fault.patch
* mm-swapfile-fix-and-annotate-various-data-races.patch
* mm-swapfile-fix-and-annotate-various-data-races-v2.patch
* mm-page_counter-fix-various-data-races-at-memsw.patch
* mm-memcontrol-fix-a-data-race-in-scan-count.patch
* mm-list_lru-fix-a-data-race-in-list_lru_count_one.patch
* mm-mempool-fix-a-data-race-in-mempool_free.patch
* mm-util-annotate-an-data-race-at-vm_committed_as.patch
* mm-rmap-annotate-a-data-race-at-tlb_flush_batched.patch
* mm-annotate-a-data-race-in-page_zonenum.patch
* mm-swap-annotate-data-races-for-lru_rotate_pvecs.patch
* net-zerocopy-use-vm_insert_pages-for-tcp-rcv-zerocopy.patch
* mm-mmapc-add-more-sanity-checks-to-get_unmapped_area.patch
* mm-mmapc-do-not-allow-mappings-outside-of-allowed-limits.patch
* mm-pass-task-and-mm-to-do_madvise.patch
* mm-introduce-external-memory-hinting-api.patch
* mm-introduce-external-memory-hinting-api-fix.patch
* mm-check-fatal-signal-pending-of-target-process.patch
* pid-move-pidfd_get_pid-function-to-pidc.patch
* mm-support-both-pid-and-pidfd-for-process_madvise.patch
* mm-madvise-allow-ksm-hints-for-remote-api.patch
* mm-support-vector-address-ranges-for-process_madvise.patch
* mm-support-vector-address-ranges-for-process_madvise-fix.patch
* mm-support-vector-address-ranges-for-process_madvise-fix-fix.patch
* mm-support-vector-address-ranges-for-process_madvise-fix-fix-fix.patch
* mm-support-vector-address-ranges-for-process_madvise-fix-fix-fix-fix.patch
* mm-remove-duplicated-include-from-madvisec.patch
* fix-read-buffer-overflow-in-delta-ipc.patch
  make-sure-nobodys-leaking-resources.patch
  releasing-resources-with-children.patch
  mutex-subsystem-synchro-test-module.patch
  kernel-forkc-export-kernel_thread-to-modules.patch
  workaround-for-a-pci-restoring-bug.patch

^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: mmotm 2020-05-05-15-28 uploaded (objtool warning)
       [not found] ` <36dc367a-f647-4ee8-a327-d1c3457a7940@infradead.org>
@ 2020-05-08 10:38   ` Peter Zijlstra
  2020-05-08 16:01     ` Josh Poimboeuf
  2020-05-08 17:28     ` Randy Dunlap
  0 siblings, 2 replies; 4+ messages in thread
From: Peter Zijlstra @ 2020-05-08 10:38 UTC (permalink / raw)
  To: Randy Dunlap
  Cc: akpm, broonie, linux-fsdevel, linux-kernel, linux-mm, linux-next,
	mhocko, mm-commits, sfr, Josh Poimboeuf

On Tue, May 05, 2020 at 10:40:43PM -0700, Randy Dunlap wrote:
> On 5/5/20 3:29 PM, akpm@linux-foundation.org wrote:
> > The mm-of-the-moment snapshot 2020-05-05-15-28 has been uploaded to
> > 
> >    http://www.ozlabs.org/~akpm/mmotm/
> > 
> > mmotm-readme.txt says
> > 
> > README for mm-of-the-moment:
> > 
> > http://www.ozlabs.org/~akpm/mmotm/
> > 
> > This is a snapshot of my -mm patch queue.  Uploaded at random hopefully
> > more than once a week.
> > 
> 
> 
> on x86_64:
> 
> arch/x86/hyperv/hv_apic.o: warning: objtool: hv_apic_write()+0x25: alternative modifies stack

Wheee... this seems to have cured it for me.

---
Subject: objtool: Allow no-op CFI ops in alternatives
From: Peter Zijlstra <peterz@infradead.org>
Date: Fri May 8 12:34:33 CEST 2020

Randy reported a false-positive: "alternative modifies stack".

What happens is that:

	alternative_io("movl %0, %P1", "xchgl %0, %P1", X86_BUG_11AP,
 13d:   89 9d 00 d0 7f ff       mov    %ebx,-0x803000(%rbp)

decodes to an instruction with CFI-ops because it modifies RBP.
However, due to this being a !frame-pointer build, that should not in
fact change the CFI state.

So instead of dis-allowing any CFI-op, verify the op would've actually
changed the CFI state.

Fixes: 7117f16bf460 ("objtool: Fix ORC vs alternatives")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 tools/objtool/check.c |   11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -2078,17 +2078,18 @@ static int handle_insn_ops(struct instru
 	struct stack_op *op;
 
 	list_for_each_entry(op, &insn->stack_ops, list) {
+		struct cfi_state old_cfi = state->cfi;
 		int res;
 
-		if (insn->alt_group) {
-			WARN_FUNC("alternative modifies stack", insn->sec, insn->offset);
-			return -1;
-		}
-
 		res = update_cfi_state(insn, &state->cfi, op);
 		if (res)
 			return res;
 
+		if (insn->alt_group && memcmp(&state->cfi, &old_cfi, sizeof(struct cfi_state))) {
+			WARN_FUNC("alternative modifies stack", insn->sec, insn->offset);
+			return -1;
+		}
+
 		if (op->dest.type == OP_DEST_PUSHF) {
 			if (!state->uaccess_stack) {
 				state->uaccess_stack = 1;

^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: mmotm 2020-05-05-15-28 uploaded (objtool warning)
  2020-05-08 10:38   ` mmotm 2020-05-05-15-28 uploaded (objtool warning) Peter Zijlstra
@ 2020-05-08 16:01     ` Josh Poimboeuf
  2020-05-08 17:28     ` Randy Dunlap
  1 sibling, 0 replies; 4+ messages in thread
From: Josh Poimboeuf @ 2020-05-08 16:01 UTC (permalink / raw)
  To: Peter Zijlstra
  Cc: Randy Dunlap, akpm, broonie, linux-fsdevel, linux-kernel,
	linux-mm, linux-next, mhocko, mm-commits, sfr

On Fri, May 08, 2020 at 12:38:30PM +0200, Peter Zijlstra wrote:
> Subject: objtool: Allow no-op CFI ops in alternatives
> From: Peter Zijlstra <peterz@infradead.org>
> Date: Fri May 8 12:34:33 CEST 2020
> 
> Randy reported a false-positive: "alternative modifies stack".
> 
> What happens is that:
> 
> 	alternative_io("movl %0, %P1", "xchgl %0, %P1", X86_BUG_11AP,
>  13d:   89 9d 00 d0 7f ff       mov    %ebx,-0x803000(%rbp)
> 
> decodes to an instruction with CFI-ops because it modifies RBP.
> However, due to this being a !frame-pointer build, that should not in
> fact change the CFI state.
> 
> So instead of dis-allowing any CFI-op, verify the op would've actually
> changed the CFI state.
> 
> Fixes: 7117f16bf460 ("objtool: Fix ORC vs alternatives")
> Reported-by: Randy Dunlap <rdunlap@infradead.org>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>

It helps to put an example of the fixed warning in the commit log, like:

This fixes the following warning:

  arch/x86/hyperv/hv_apic.o: warning: objtool: hv_apic_write()+0x25: alternative modifies stack

Otherwise it looks good.

Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>

-- 
Josh


^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: mmotm 2020-05-05-15-28 uploaded (objtool warning)
  2020-05-08 10:38   ` mmotm 2020-05-05-15-28 uploaded (objtool warning) Peter Zijlstra
  2020-05-08 16:01     ` Josh Poimboeuf
@ 2020-05-08 17:28     ` Randy Dunlap
  1 sibling, 0 replies; 4+ messages in thread
From: Randy Dunlap @ 2020-05-08 17:28 UTC (permalink / raw)
  To: Peter Zijlstra
  Cc: akpm, broonie, linux-fsdevel, linux-kernel, linux-mm, linux-next,
	mhocko, mm-commits, sfr, Josh Poimboeuf

On 5/8/20 3:38 AM, Peter Zijlstra wrote:
> On Tue, May 05, 2020 at 10:40:43PM -0700, Randy Dunlap wrote:
>> On 5/5/20 3:29 PM, akpm@linux-foundation.org wrote:
>>> The mm-of-the-moment snapshot 2020-05-05-15-28 has been uploaded to
>>>
>>>    http://www.ozlabs.org/~akpm/mmotm/
>>>
>>> mmotm-readme.txt says
>>>
>>> README for mm-of-the-moment:
>>>
>>> http://www.ozlabs.org/~akpm/mmotm/
>>>
>>> This is a snapshot of my -mm patch queue.  Uploaded at random hopefully
>>> more than once a week.
>>>
>>
>>
>> on x86_64:
>>
>> arch/x86/hyperv/hv_apic.o: warning: objtool: hv_apic_write()+0x25: alternative modifies stack
> 
> Wheee... this seems to have cured it for me.
> 
> ---
> Subject: objtool: Allow no-op CFI ops in alternatives
> From: Peter Zijlstra <peterz@infradead.org>
> Date: Fri May 8 12:34:33 CEST 2020
> 
> Randy reported a false-positive: "alternative modifies stack".
> 
> What happens is that:
> 
> 	alternative_io("movl %0, %P1", "xchgl %0, %P1", X86_BUG_11AP,
>  13d:   89 9d 00 d0 7f ff       mov    %ebx,-0x803000(%rbp)
> 
> decodes to an instruction with CFI-ops because it modifies RBP.
> However, due to this being a !frame-pointer build, that should not in
> fact change the CFI state.
> 
> So instead of dis-allowing any CFI-op, verify the op would've actually
> changed the CFI state.
> 
> Fixes: 7117f16bf460 ("objtool: Fix ORC vs alternatives")
> Reported-by: Randy Dunlap <rdunlap@infradead.org>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>

Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>

Thanks.

> ---
>  tools/objtool/check.c |   11 ++++++-----
>  1 file changed, 6 insertions(+), 5 deletions(-)
> 
> --- a/tools/objtool/check.c
> +++ b/tools/objtool/check.c
> @@ -2078,17 +2078,18 @@ static int handle_insn_ops(struct instru
>  	struct stack_op *op;
>  
>  	list_for_each_entry(op, &insn->stack_ops, list) {
> +		struct cfi_state old_cfi = state->cfi;
>  		int res;
>  
> -		if (insn->alt_group) {
> -			WARN_FUNC("alternative modifies stack", insn->sec, insn->offset);
> -			return -1;
> -		}
> -
>  		res = update_cfi_state(insn, &state->cfi, op);
>  		if (res)
>  			return res;
>  
> +		if (insn->alt_group && memcmp(&state->cfi, &old_cfi, sizeof(struct cfi_state))) {
> +			WARN_FUNC("alternative modifies stack", insn->sec, insn->offset);
> +			return -1;
> +		}
> +
>  		if (op->dest.type == OP_DEST_PUSHF) {
>  			if (!state->uaccess_stack) {
>  				state->uaccess_stack = 1;
> 


-- 
~Randy

^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2020-05-08 17:28 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-05-05 22:29 mmotm 2020-05-05-15-28 uploaded akpm
     [not found] ` <36dc367a-f647-4ee8-a327-d1c3457a7940@infradead.org>
2020-05-08 10:38   ` mmotm 2020-05-05-15-28 uploaded (objtool warning) Peter Zijlstra
2020-05-08 16:01     ` Josh Poimboeuf
2020-05-08 17:28     ` Randy Dunlap

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