On 11/29/18 1:38 PM, akpm@xxxxxxxxxxxxxxxxxxxx wrote: > The mm-of-the-moment snapshot 2018-11-29-13-37 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/ Lots of kasan build errors on x86_64. > * kasan-mm-change-hooks-signatures.patch > * kasan-slub-handle-pointer-tags-in-early_kmem_cache_node_alloc.patch > * kasan-move-common-generic-and-tag-based-code-to-commonc.patch > * kasan-rename-source-files-to-reflect-the-new-naming-scheme.patch > * kasan-add-config_kasan_generic-and-config_kasan_sw_tags.patch > * kasan-arm64-adjust-shadow-size-for-tag-based-mode.patch > * kasan-rename-kasan_zero_page-to-kasan_early_shadow_page.patch > * kasan-initialize-shadow-to-0xff-for-tag-based-mode.patch > * arm64-move-untagged_addr-macro-from-uaccessh-to-memoryh.patch > * kasan-add-tag-related-helper-functions.patch > * kasan-arm64-untag-address-in-_virt_addr_is_linear.patch > * kasan-preassign-tags-to-objects-with-ctors-or-slab_typesafe_by_rcu.patch > * kasan-arm64-fix-up-fault-handling-logic.patch > * kasan-arm64-enable-top-byte-ignore-for-the-kernel.patch > * kasan-mm-perform-untagged-pointers-comparison-in-krealloc.patch > * kasan-split-out-generic_reportc-from-reportc.patch > * kasan-add-bug-reporting-routines-for-tag-based-mode.patch > * mm-move-obj_to_index-to-include-linux-slab_defh.patch > * kasan-add-hooks-implementation-for-tag-based-mode.patch > * kasan-arm64-add-brk-handler-for-inline-instrumentation.patch > * kasan-mm-arm64-tag-non-slab-memory-allocated-via-pagealloc.patch > * kasan-add-__must_check-annotations-to-kasan-hooks.patch > * kasan-arm64-select-have_arch_kasan_sw_tags.patch > * kasan-update-documentation.patch > * kasan-add-spdx-license-identifier-mark-to-source-files.patch The simplest error is: ../mm/kasan/common.c:574:17: error: 'KASAN_SHADOW_INIT' undeclared (first use in this function) when neither KASAN_GENERIC nor KASAN_SW_TAGS is set (enabled). There there are a slew of these: ../mm/kasan/common.c: In function 'filter_irq_stacks': ../mm/kasan/common.c:53:12: error: dereferencing pointer to incomplete type if (!trace->nr_entries) ^ ../mm/kasan/common.c:55:23: error: dereferencing pointer to incomplete type for (i = 0; i < trace->nr_entries; i++) ^ ../mm/kasan/common.c:56:29: error: dereferencing pointer to incomplete type if (in_irqentry_text(trace->entries[i])) { ^ ../mm/kasan/common.c:58:9: error: dereferencing pointer to incomplete type trace->nr_entries = i + 1; ^ ../mm/kasan/common.c: In function 'save_stack': ../mm/kasan/common.c:66:9: error: variable 'trace' has initializer but incomplete type struct stack_trace trace = { ^ ../mm/kasan/common.c:67:3: error: unknown field 'nr_entries' specified in initializer .nr_entries = 0, ^ ../mm/kasan/common.c:67:3: warning: excess elements in struct initializer [enabled by default] ../mm/kasan/common.c:67:3: warning: (near initialization for 'trace') [enabled by default] ../mm/kasan/common.c:68:3: error: unknown field 'entries' specified in initializer .entries = entries, ^ ../mm/kasan/common.c:68:3: warning: excess elements in struct initializer [enabled by default] ../mm/kasan/common.c:68:3: warning: (near initialization for 'trace') [enabled by default] ../mm/kasan/common.c:69:3: error: unknown field 'max_entries' specified in initializer .max_entries = KASAN_STACK_DEPTH, ^ ../mm/kasan/common.c:69:3: warning: excess elements in struct initializer [enabled by default] ../mm/kasan/common.c:69:3: warning: (near initialization for 'trace') [enabled by default] ../mm/kasan/common.c:70:3: error: unknown field 'skip' specified in initializer .skip = 0 ^ ../mm/kasan/common.c:71:2: warning: excess elements in struct initializer [enabled by default] }; ^ ../mm/kasan/common.c:71:2: warning: (near initialization for 'trace') [enabled by default] ../mm/kasan/common.c:66:21: error: storage size of 'trace' isn't known struct stack_trace trace = { ^ ../mm/kasan/common.c:66:21: warning: unused variable 'trace' [-Wunused-variable] ../mm/kasan/common.c: In function 'kasan_module_alloc': ../mm/kasan/common.c:574:17: error: 'KASAN_SHADOW_INIT' undeclared (first use in this function) __memset(ret, KASAN_SHADOW_INIT, shadow_size); ^ ../mm/kasan/common.c:574:17: note: each undeclared identifier is reported only once for each function it appears in ../mm/kasan/common.c: In function 'save_stack': ../mm/kasan/common.c:80:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ ../scripts/Makefile.build:285: recipe for target 'mm/kasan/common.o' failed -- ~Randy
