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Hermes SMTP Server) with ESMTPA ID 42f50bc66de0801b657dc56b066914ab; Tue, 18 Nov 2025 18:39:17 +0000 (UTC) Content-Type: text/plain; charset=us-ascii List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@FreeBSD.org Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3826.700.81\)) Subject: Re: Still seeing Failed assertion: "p[i] == 0" on armv7 buildworld [gdb backtrace! End of area has 0x5a5a5a5a sequence] From: Mark Millard In-Reply-To: <3174F751-9853-4697-B0C0-98B54518A69F@yahoo.com> Date: Tue, 18 Nov 2025 10:39:06 -0800 Cc: bob prohaska , Adrian Chadd , Carl Shapiro , Ronald Klop Content-Transfer-Encoding: quoted-printable Message-Id: References: <4957be52-e57f-4f5f-9626-d0f706480fe1@FreeBSD.org> <87ldkai9lu.fsf@panix.com> <877bvthymv.fsf@panix.com> <13E753F4-84F8-4ADB-96B6-908897D6971C@yahoo.com> <3174F751-9853-4697-B0C0-98B54518A69F@yahoo.com> To: Konstantin Belousov , Michal Meloun , Warner Losh , freebsd-arm@freebsd.org, freebsd-current@freebsd.org X-Mailer: Apple Mail (2.3826.700.81) X-Spamd-Bar: --- X-Spamd-Result: default: False [-3.94 / 15.00]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.94)[-0.939]; DMARC_POLICY_ALLOW(-0.50)[yahoo.com,reject]; R_DKIM_ALLOW(-0.20)[yahoo.com:s=s2048]; R_SPF_ALLOW(-0.20)[+ptr:yahoo.com]; MIME_GOOD(-0.10)[text/plain]; RCVD_TLS_LAST(0.00)[]; FROM_HAS_DN(0.00)[]; ARC_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; DWL_DNSWL_NONE(0.00)[yahoo.com:dkim]; SUBJECT_HAS_EXCLAIM(0.00)[]; FREEMAIL_FROM(0.00)[yahoo.com]; TO_DN_SOME(0.00)[]; DKIM_TRACE(0.00)[yahoo.com:+]; RCVD_VIA_SMTP_AUTH(0.00)[]; RWL_MAILSPIKE_POSSIBLE(0.00)[98.137.69.83:from]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; FROM_EQ_ENVFROM(0.00)[]; FREEMAIL_ENVFROM(0.00)[yahoo.com]; MLMMJ_DEST(0.00)[freebsd-current@freebsd.org]; RCPT_COUNT_SEVEN(0.00)[9]; MID_RHS_MATCH_FROM(0.00)[]; APPLE_MAILER_COMMON(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[98.137.69.83:from] X-Rspamd-Queue-Id: 4d9tgf23NRz3R6P On Nov 18, 2025, at 10:18, Mark Millard wrote: > I modified system clang to not register its 2 SIGABRT handlers. >=20 > The backtrace has the jemalloc call stack activity as well. >=20 > (gdb) bt > #0 thr_kill () at thr_kill.S:4 > #1 0x2a08ef24 in __raise (s=3D6) at /usr/src/lib/libc/gen/raise.c:48 > #2 0x2a145f38 in abort () at /usr/src/lib/libc/stdlib/abort.c:61 > #3 0x2a196128 in ehooks_debug_zero_check (addr=3Daddr@entry=3D0x2b62900= 0, size=3Dsize@entry=3D12288) at = /usr/src/contrib/jemalloc/include/jemalloc/internal/ehooks.h:170 > #4 0x2a191f60 in ehooks_alloc (tsdn=3D0x2a2e4060, ehooks=3D0x2a600080, = new_addr=3D0x0, size=3D, alignment=3D4096, = zero=3D0xffff6f17, commit=3D) > at /usr/src/contrib/jemalloc/include/jemalloc/internal/ehooks.h:208 > #5 __je_extent_alloc_wrapper (tsdn=3Dtsdn@entry=3D0x2a2e4060, = pac=3D0x2a601810, ehooks=3D, new_addr=3D, = size=3D12288, alignment=3D4096, zero=3Dtrue, commit=3D0xffff6f77,=20 > growing_retained=3D) at jemalloc_extent.c:1003 > #6 0x2a1916e0 in __je_ecache_alloc_grow (tsdn=3D, = tsdn@entry=3D0x2a2e4060, pac=3Dpac@entry=3D0x2a601810, = ehooks=3Dehooks@entry=3D0x2a600080, ecache=3D, = ecache@entry=3D0x2a603dd0,=20 > expand_edata=3D0x0, size=3D12288, alignment=3D4096, zero=3D, guarded=3D) at jemalloc_extent.c:126 > #7 0x2a1c9680 in pac_alloc_real (tsdn=3D0x2a2e4060, pac=3D0x2a601810, = ehooks=3D0x2a600080, size=3D12288, alignment=3D4096, zero=3D, guarded=3Dfalse) at jemalloc_pac.c:124 > #8 pac_alloc_impl (tsdn=3Dtsdn@entry=3D0x2a2e4060, self=3D0x2a601810, = size=3Dsize@entry=3D12288, alignment=3D4096, zero=3D, = guarded=3Dfalse, frequent_reuse=3D,=20 > deferred_work_generated=3D) at jemalloc_pac.c:178 > #9 0x2a1c7ae8 in pai_alloc (tsdn=3D0x2a2e4060, self=3D0x0, = size=3D12288, alignment=3D2147483615, zero=3D, = guarded=3Dfalse, frequent_reuse=3Dtrue, = deferred_work_generated=3D) > at /usr/src/contrib/jemalloc/include/jemalloc/internal/pai.h:43 > #10 __je_pa_alloc (tsdn=3Dtsdn@entry=3D0x2a2e4060, = shard=3Dshard@entry=3D0x2a601800, size=3D12288, alignment=3D, slab=3Dtrue, szind=3D25, zero=3D, guarded=3Dfalse,=20= > deferred_work_generated=3D0xffff703f) at jemalloc_pa.c:139 > #11 0x2a16b9f8 in arena_slab_alloc (tsdn=3Dtsdn@entry=3D0x2a2e4060, = arena=3D0x2a600540, binind=3D25, binshard=3D0, bin_info=3D0x2a21ff0c = <__je_bin_infos+1200>) at jemalloc_arena.c:839 > #12 0x2a16ac98 in __je_arena_cache_bin_fill_small (tsdn=3D0x2a2e4060, = arena=3D0x2a600540, cache_bin=3Dcache_bin@entry=3D0x2a2e4528, = cache_bin_info=3D0x2a6004f2, binind=3D25, nfill=3D5) at = jemalloc_arena.c:1034 > #13 0x2a1b5694 in __je_tcache_alloc_small_hard (tsdn=3D0x0, = tsdn@entry=3D0x2a2e4060, arena=3D0x0, arena@entry=3D0x2a600540, = tcache=3Dtcache@entry=3D0x2a2e42c8, = cache_bin=3Dcache_bin@entry=3D0x2a2e4528, binind=3D25,=20 > tcache_success=3D0xffff70ef) at jemalloc_tcache.c:238 > #14 0x2a16cef4 in tcache_alloc_small (tsd=3D, = arena=3D0x2a600540, tcache=3D0x2a2e42c8, size=3D, = binind=3D25, zero=3Dfalse, slow_path=3Dtrue) > at = /usr/src/contrib/jemalloc/include/jemalloc/internal/tcache_inlines.h:68 > #15 arena_malloc (tsdn=3D, arena=3D, = size=3D1536, ind=3D25, zero=3Dfalse, tcache=3D0x2a2e42c8, = slow_path=3Dtrue) > at = /usr/src/contrib/jemalloc/include/jemalloc/internal/arena_inlines_b.h:151 > #16 0x2a16cb88 in __je_arena_palloc (tsdn=3D0x0, = tsdn@entry=3D0x2a2e4060, arena=3D, usize=3D, usize@entry=3D1536, alignment=3Dalignment@entry=3D8, zero=3Dfalse, = tcache=3D0x2a2e42c8) > at jemalloc_arena.c:1224 > #17 0x2a16559c in ipallocztm (tsdn=3D0x2a2e4060, = tsdn@entry=3D0x2a2e42c8, usize=3D1536, alignment=3D8, zero=3Dfalse, = tcache=3D0x2a2e42c8, is_internal=3Dfalse, arena=3D0x0) > at = /usr/src/contrib/jemalloc/include/jemalloc/internal/jemalloc_internal_inli= nes_c.h:80 > #18 ipalloct (tsdn=3D0x0, tsdn@entry=3D0x2a2e4060, usize=3D1536, = alignment=3D8, zero=3Dfalse, tcache=3D0x2a2e42c8, arena=3D0x0) > at = /usr/src/contrib/jemalloc/include/jemalloc/internal/jemalloc_internal_inli= nes_c.h:91 > #19 0x2a1651f4 in imalloc_no_sample (sopts=3D0xffff71e4, = dopts=3D0xffff71c4, tsd=3D0x2a2e4060, size=3D1536, usize=3D1536, = ind=3D) at jemalloc_jemalloc.c:2398 > #20 imalloc_body (sopts=3D0xffff71e4, dopts=3D0xffff71c4, = tsd=3D0x2a2e4060) at jemalloc_jemalloc.c:2577 > #21 0x2a156188 in imalloc (sopts=3Dsopts@entry=3D0xffff71e4, = dopts=3D, dopts@entry=3D0xffff71c4) at = jemalloc_jemalloc.c:2693 > #22 0x2a15677c in __aligned_alloc (alignment=3D8, size=3D1536) at = jemalloc_jemalloc.c:2821 > #23 0x29e61a00 in = std::__1::__libcpp_aligned_alloc[abi:se190107](unsigned int, unsigned = int) (__alignment=3D8, __size=3D) > at = /usr/src/contrib/llvm-project/libcxx/include/__memory/aligned_alloc.h:43 > #24 operator_new_aligned_impl (size=3D, alignment=3D8) = at /usr/src/contrib/llvm-project/libcxx/src/new.cpp:129 > #25 operator new (size=3D, alignment=3D) = at /usr/src/contrib/llvm-project/libcxx/src/new.cpp:141 > #26 0x2631dde0 in allocateBuckets () at = /usr/src/contrib/llvm-project/llvm/include/llvm/ADT/DenseMap.h:915 > #27 grow () at = /usr/src/contrib/llvm-project/llvm/include/llvm/ADT/DenseMap.h:849 > #28 0x2631dd0c in grow () at = /usr/src/contrib/llvm-project/llvm/include/llvm/ADT/DenseMap.h:580 > #29 0x2631dd0c in InsertIntoBucketImpl () = from /usr/lib/libprivatellvm.so.19 > #30 0x2631daa4 in InsertIntoBucket () = at /usr/src/contrib/llvm-project/llvm/include/llvm/ADT/DenseMap.h:590 > #31 FindAndConstruct () at = /usr/src/contrib/llvm-project/llvm/include/llvm/ADT/DenseMap.h:369 > #32 0x2631d49c in operator[] () at = /usr/src/contrib/llvm-project/llvm/include/llvm/ADT/DenseMap.h:373 > #33 analyzeBasicBlock () at = /usr/src/contrib/llvm-project/llvm/lib/Analysis/CodeMetrics.cpp:234 > #34 0x28e2c3ec in run () at = /usr/src/contrib/llvm-project/llvm/lib/Transforms/IPO/FunctionSpecializati= on.cpp:643 > #35 0x28f4fd70 in runIPSCCP () at = /usr/src/contrib/llvm-project/llvm/lib/Transforms/IPO/SCCP.cpp:165 > #36 run () at = /usr/src/contrib/llvm-project/llvm/lib/Transforms/IPO/SCCP.cpp:403 > #37 0x27b85d14 in llvm::detail::PassModel>::run(llvm::Module&, = llvm::AnalysisManager&) () > at = /usr/src/contrib/llvm-project/llvm/include/llvm/IR/PassManagerInternal.h:9= 0 > #38 0x276ee244 in run () at = /usr/src/contrib/llvm-project/llvm/include/llvm/IR/PassManagerImpl.h:81 > #39 0x22174ffc in RunOptimizationPipeline () at = /usr/src/contrib/llvm-project/clang/lib/CodeGen/BackendUtil.cpp:1114 > #40 0x2216cfb8 in EmitAssembly () at = /usr/src/contrib/llvm-project/clang/lib/CodeGen/BackendUtil.cpp:1179 > #41 EmitBackendOutput () at = /usr/src/contrib/llvm-project/clang/lib/CodeGen/BackendUtil.cpp:1341 > #42 0x225cbca0 in HandleTranslationUnit () at = /usr/src/contrib/llvm-project/clang/lib/CodeGen/CodeGenAction.cpp:354 > #43 0x22cff8e4 in ParseAST () at = /usr/src/contrib/llvm-project/clang/lib/Parse/ParseAST.cpp:184 > #44 0x22b5a7b8 in Execute () at = /usr/src/contrib/llvm-project/clang/lib/Frontend/FrontendAction.cpp:1078 > --Type for more, q to quit, c to continue without paging-- > #45 0x22adb800 in ExecuteAction () at = /usr/src/contrib/llvm-project/clang/lib/Frontend/CompilerInstance.cpp:1061= > #46 0x22bf6a90 in ExecuteCompilerInvocation () at = /usr/src/contrib/llvm-project/clang/lib/FrontendTool/ExecuteCompilerInvoca= tion.cpp:280 > #47 0x0002afc8 in cc1_main () at = /usr/src/contrib/llvm-project/clang/tools/driver/cc1_main.cpp:284 > #48 0x00038548 in ExecuteCC1Tool () at = /usr/src/contrib/llvm-project/clang/tools/driver/driver.cpp:215 > #49 0x227877ec in operator() () at = /usr/src/contrib/llvm-project/llvm/include/llvm/ADT/STLFunctionalExtras.h:= 68 > #50 operator() () at = /usr/src/contrib/llvm-project/clang/lib/Driver/Job.cpp:440 > #51 callback_fn<(lambda at = /usr/src/contrib/llvm-project/clang/lib/Driver/Job.cpp:440:22)>(void) () = at = /usr/src/contrib/llvm-project/llvm/include/llvm/ADT/STLFunctionalExtras.h:= 45 > #52 0x27d88624 in operator() () at = /usr/src/contrib/llvm-project/llvm/include/llvm/ADT/STLFunctionalExtras.h:= 68 > #53 RunSafely () at = /usr/src/contrib/llvm-project/llvm/lib/Support/CrashRecoveryContext.cpp:42= 6 > #54 0x22786e90 in Execute () at = /usr/src/contrib/llvm-project/clang/lib/Driver/Job.cpp:440 > #55 0x22748074 in ExecuteCommand () at = /usr/src/contrib/llvm-project/clang/lib/Driver/Compilation.cpp:199 > #56 0x227483d0 in ExecuteJobs () at = /usr/src/contrib/llvm-project/clang/lib/Driver/Compilation.cpp:253 > #57 0x22765bb8 in ExecuteCompilation () at = /usr/src/contrib/llvm-project/clang/lib/Driver/Driver.cpp:1943 > #58 0x00037ba4 in clang_main () at = /usr/src/contrib/llvm-project/clang/tools/driver/driver.cpp:391 > #59 0x000363a8 in main () at = /usr/src/usr.bin/clang/clang/clang-driver.cpp:17 (gdb) list 165 assert(size > 0); 166 if (config_debug) { 167 /* Check the whole first page. */ 168 size_t *p =3D (size_t *)addr; 169 for (size_t i =3D 0; i < PAGE / sizeof(size_t); = i++) { 170 assert(p[i] =3D=3D 0); 171 } (gdb) x /1024x addr 0x2b629000: 0x00000000 0x00000000 0x00000000 = 0x00000000 0x2b629010: 0x00000000 0x00000000 0x00000000 = 0x00000000 0x2b629020: 0x00000000 0x00000000 0x00000000 = 0x00000000 . . . 0x2b629c10: 0x00000000 0x00000000 0x00000000 = 0x00000000 0x2b629c20: 0x00000000 0x00000000 0x00000000 = 0x00000000 0x2b629c30: 0x00000000 0x00000000 0x00000000 = 0x00000000 0x2b629c40: 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a = 0x5a5a5a5a 0x2b629c50: 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a = 0x5a5a5a5a 0x2b629c60: 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a = 0x5a5a5a5a . . . 0x2b629fd0: 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a = 0x5a5a5a5a 0x2b629fe0: 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a = 0x5a5a5a5a 0x2b629ff0: 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a = 0x5a5a5a5a (gdb)=20 It has more 0x5a5a5a5a 's after that. > For reference: >=20 > . . . > Building = /usr/obj/usr/src-investigation/arm.armv7/lib/clang/libclang/CodeGen/Backen= dUtil.pico > . . . > Building = /usr/obj/usr/src-investigation/arm.armv7/lib/clang/libclang/CodeGen/CGDecl= .pico > : = /usr/src/contrib/jemalloc/include/jemalloc/internal/ehooks.h:170: Failed = assertion: "p[i] =3D=3D 0" > . . . > _ERROR_CMD=3D'c++ -target armv7-gnueabihf-freebsd16.0 = --sysroot=3D/usr/obj/usr/src-investigation/arm.armv7/tmp = -B/usr/obj/usr/src-investigation/arm.armv7/tmp/usr/bin -fpic -DPIC = -UPIC -O2 -pipe -fno-common = -I/usr/obj/usr/src-investigation/arm.armv7/lib/clang/libclang = -I/usr/obj/usr/src-investigation/arm.armv7/lib/clang/libllvm = -I/usr/src-investigation/contrib/llvm-project/clang/lib/Basic = -I/usr/src-investigation/contrib/llvm-project/clang/lib/Driver = -I/usr/src-investigation/contrib/llvm-project/clang/lib/CodeGen = -I/usr/src-investigation/contrib/llvm-project/clang/include = -DCLANG_ENABLE_ARCMT -DCLANG_ENABLE_STATIC_ANALYZER = -I/usr/src-investigation/lib/clang/include = -I/usr/src-investigation/contrib/llvm-project/llvm/include = -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS = -DHAVE_VCS_VERSION_INC = -DLLVM_DEFAULT_TARGET_TRIPLE=3D\"armv7-unknown-freebsd16.0-gnueabihf\" = -DLLVM_HOST_TRIPLE=3D\"armv7-unknown-freebsd16.0\" = -DDEFAULT_SYSROOT=3D\"\" -DLLVM_TARGET_ENABLE_AARCH64 = -DLLVM_TARGET_ENABLE_ARM -DLLVM_TARGET_ENABLE_POWERPC = -DLLVM_TARGET_ENABLE_RISCV -DLLVM_TARGET_ENABLE_X86 = -DLLVM_NATIVE_ASMPARSER=3DLLVMInitializeARMAsmParser = -DLLVM_NATIVE_ASMPRINTER=3DLLVMInitializeARMAsmPrinter = -DLLVM_NATIVE_DISASSEMBLER=3DLLVMInitializeARMDisassembler = -DLLVM_NATIVE_TARGET=3DLLVMInitializeARMTarget = -DLLVM_NATIVE_TARGETINFO=3DLLVMInitializeARMTargetInfo = -DLLVM_NATIVE_TARGETMC=3DLLVMInitializeARMTargetMC -ffunction-sections = -fdata-sections -gline-tables-only -Wno-format-zero-length = -fstack-protector-strong -Wdate-time -Wno-empty-body = -Wno-string-plus-int -Wno-unused-const-variable = -Wno-error=3Dunused-but-set-parameter = -Wno-error=3Dcast-function-type-mismatch -Wno-tautological-compare = -Wno-unused-value -Wno-parentheses-equality -Wno-unused-function = -Wno-enum-conversion -Wno-unused-local-typedef = -Wno-address-of-packed-member -Wno-switch -Wno-switch-enum = -Wno-knr-promoted-parameter -Wno-parentheses -Qunused-arguments = -fno-exceptions -fno-rtti -gline-tables-only -std=3Dc++17 = -stdlib=3Dlibc++ -c = /usr/src-investigation/contrib/llvm-project/clang/lib/CodeGen/BackendUtil.= cpp -o CodeGen/BackendUtil.pico;' =3D=3D=3D Mark Millard marklmi at yahoo.com