Date: Tue, 18 Nov 2025 17:57:21 -0800 From: Mark Millard <marklmi@yahoo.com> To: "marklmi-yh.com" <marklmi@yahoo.com> Cc: freebsd-arm@freebsd.org, freebsd-current@freebsd.org Subject: Re: Still seeing Failed assertion: "p[i] == 0" on armv7 buildworld [Notes from another example core dump: #3] Message-ID: <F9590F2F-0CB0-4AA9-870E-A97D45C1EC01@yahoo.com> In-Reply-To: <463AC500-C7C7-43FB-B5EF-332CEBA3D944@yahoo.com> References: <aOvTG-20QRJtJJwf@int21h> <CANCZdfrJ8rph_rkT3Mk-sNYKNspoV15SvHWLsahzS0HnULi4ww@mail.gmail.com> <aO068RrAehdiHOoZ@www.zefox.net> <aRUJPryA4Vmu8dDD@www.zefox.net> <4957be52-e57f-4f5f-9626-d0f706480fe1@FreeBSD.org> <87ldkai9lu.fsf@panix.com> <aRXuLTN4hkGykHIl@www.zefox.net> <877bvthymv.fsf@panix.com> <aRdJ5xYeKEmhuIgh@www.zefox.net> <ouy1pm0nued.fsf@panix3.panix.com> <aRtBYaaa0n3_lwar@www.zefox.net> <CAJ-Vmo=TbT7nD7rBrNnq3cutwMp9f7WXtQ-k9mUBne5ht4zGWg@mail.gmail.com> <13E753F4-84F8-4ADB-96B6-908897D6971C@yahoo.com> <3174F751-9853-4697-B0C0-98B54518A69F@yahoo.com> <E634EF40-545C-44D7-9050-83D18090F6EB@yahoo.com> <BA9E6753-F895-46C8-95F3-C3C8B1692033@yahoo.com> <A27FE12B-0074-4403-81F7-8A224CC96CC8@yahoo.com> <D17E06B0-4591-45F2-8C46-70D94E371941@yahoo.com> <463AC500-C7C7-43FB-B5EF-332CEBA3D944@yahoo.com>
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I'm only sending notes from testing of how similar other failures appear
to the 2 lists. Folks can ask that I do otherwise for them if they want.
This one is for size 4096 (1 page). It looks like #0..#15 are similar to
the prior reports. #15 is for: arena_malloc
(gdb) bt
#0 thr_kill () at thr_kill.S:4
#1 0x2a08ef24 in __raise (s=6) 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=addr@entry=0x2e0eb000, size=size@entry=4096) at /usr/src/contrib/jemalloc/include/jemalloc/internal/ehooks.h:170
#4 0x2a191f60 in ehooks_alloc (tsdn=0x2a2e4060, ehooks=0x2a600080, new_addr=0x0, size=<optimized out>, alignment=4096, zero=0xffff7e87, commit=<optimized out>)
at /usr/src/contrib/jemalloc/include/jemalloc/internal/ehooks.h:208
#5 __je_extent_alloc_wrapper (tsdn=tsdn@entry=0x2a2e4060, pac=0x2a601810, ehooks=<optimized out>, new_addr=<optimized out>, size=4096, alignment=4096, zero=true, commit=0xffff7ee7,
growing_retained=<optimized out>) at jemalloc_extent.c:1003
#6 0x2a1916e0 in __je_ecache_alloc_grow (tsdn=<optimized out>, tsdn@entry=0x2a2e4060, pac=pac@entry=0x2a601810, ehooks=ehooks@entry=0x2a600080, ecache=<optimized out>, ecache@entry=0x2a603dd0,
expand_edata=0x0, size=4096, alignment=4096, zero=<optimized out>, guarded=<optimized out>) at jemalloc_extent.c:126
#7 0x2a1c9680 in pac_alloc_real (tsdn=0x2a2e4060, pac=0x2a601810, ehooks=0x2a600080, size=4096, alignment=4096, zero=<optimized out>, guarded=false) at jemalloc_pac.c:124
#8 pac_alloc_impl (tsdn=tsdn@entry=0x2a2e4060, self=0x2a601810, size=size@entry=4096, alignment=4096, zero=<optimized out>, guarded=false, frequent_reuse=<optimized out>,
deferred_work_generated=<optimized out>) at jemalloc_pac.c:178
#9 0x2a1c7ae8 in pai_alloc (tsdn=0x2a2e4060, self=0x0, size=4096, alignment=2147483615, zero=<optimized out>, guarded=false, frequent_reuse=true, deferred_work_generated=<optimized out>)
at /usr/src/contrib/jemalloc/include/jemalloc/internal/pai.h:43
#10 __je_pa_alloc (tsdn=tsdn@entry=0x2a2e4060, shard=shard@entry=0x2a601800, size=4096, alignment=<optimized out>, slab=true, szind=19, zero=<optimized out>, guarded=false,
deferred_work_generated=0xffff7faf) at jemalloc_pa.c:139
#11 0x2a16b9f8 in arena_slab_alloc (tsdn=tsdn@entry=0x2a2e4060, arena=0x2a600540, binind=19, binshard=0, bin_info=0x2a21fdec <__je_bin_infos+912>) at jemalloc_arena.c:839
#12 0x2a16ac98 in __je_arena_cache_bin_fill_small (tsdn=0x2a2e4060, arena=0x2a600540, cache_bin=cache_bin@entry=0x2a2e4498, cache_bin_info=0x2a6004e6, binind=19, nfill=10) at jemalloc_arena.c:1034
#13 0x2a1b5694 in __je_tcache_alloc_small_hard (tsdn=0x0, tsdn@entry=0x2a2e4060, arena=0x0, arena@entry=0x2a600540, tcache=tcache@entry=0x2a2e42c8, cache_bin=cache_bin@entry=0x2a2e4498, binind=19,
tcache_success=0xffff805f) at jemalloc_tcache.c:238
#14 0x2a16cef4 in tcache_alloc_small (tsd=<optimized out>, arena=0x2a600540, tcache=0x2a2e42c8, size=<optimized out>, binind=19, zero=false, slow_path=true)
at /usr/src/contrib/jemalloc/include/jemalloc/internal/tcache_inlines.h:68
#15 arena_malloc (tsdn=<optimized out>, arena=<optimized out>, size=512, ind=19, zero=false, tcache=0x2a2e42c8, slow_path=true)
at /usr/src/contrib/jemalloc/include/jemalloc/internal/arena_inlines_b.h:151
#16 0x2a16cb88 in __je_arena_palloc (tsdn=0x0, tsdn@entry=0x2a2e4060, arena=<optimized out>, usize=<optimized out>, usize@entry=512, alignment=alignment@entry=4, zero=false, tcache=0x2a2e42c8)
at jemalloc_arena.c:1224
#17 0x2a16559c in ipallocztm (tsdn=0x2a2e4060, tsdn@entry=0x2a2e42c8, usize=512, alignment=4, zero=false, tcache=0x2a2e42c8, is_internal=false, arena=0x0)
at /usr/src/contrib/jemalloc/include/jemalloc/internal/jemalloc_internal_inlines_c.h:80
#18 ipalloct (tsdn=0x0, tsdn@entry=0x2a2e4060, usize=512, alignment=4, zero=false, tcache=0x2a2e42c8, arena=0x0)
at /usr/src/contrib/jemalloc/include/jemalloc/internal/jemalloc_internal_inlines_c.h:91
#19 0x2a1651f4 in imalloc_no_sample (sopts=0xffff8154, dopts=0xffff8134, tsd=0x2a2e4060, size=512, usize=512, ind=<optimized out>) at jemalloc_jemalloc.c:2398
#20 imalloc_body (sopts=0xffff8154, dopts=0xffff8134, tsd=0x2a2e4060) at jemalloc_jemalloc.c:2577
#21 0x2a156188 in imalloc (sopts=sopts@entry=0xffff8154, dopts=<optimized out>, dopts@entry=0xffff8134) at jemalloc_jemalloc.c:2693
#22 0x2a15677c in __aligned_alloc (alignment=4, size=512) at jemalloc_jemalloc.c:2821
#23 0x29e61a00 in std::__1::__libcpp_aligned_alloc[abi:se190107](unsigned int, unsigned int) (__alignment=4, __size=<optimized out>)
at /usr/src/contrib/llvm-project/libcxx/include/__memory/aligned_alloc.h:43
#24 operator_new_aligned_impl (size=<optimized out>, alignment=4) at /usr/src/contrib/llvm-project/libcxx/src/new.cpp:129
#25 operator new (size=<optimized out>, alignment=<optimized out>) at /usr/src/contrib/llvm-project/libcxx/src/new.cpp:141
#26 0x276265a0 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 0x276264d0 in grow () at /usr/src/contrib/llvm-project/llvm/include/llvm/ADT/DenseMap.h:580
#29 0x276264d0 in InsertIntoBucketImpl<llvm::BasicBlock*> () from /usr/lib/libprivatellvm.so.19
#30 0x276262d0 in InsertIntoBucket<llvm::BasicBlock* const&> () 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 0x2761e67c in operator[] () at /usr/src/contrib/llvm-project/llvm/include/llvm/ADT/DenseMap.h:373
#33 createNode () at /usr/src/contrib/llvm-project/llvm/include/llvm/Support/GenericDomTree.h:840
#34 CalculateFromScratch () at /usr/src/contrib/llvm-project/llvm/include/llvm/Support/GenericDomTreeConstruction.h:579
#35 0x2762537c in Calculate<llvm::DominatorTreeBase<llvm::BasicBlock, false> > () at /usr/src/contrib/llvm-project/llvm/include/llvm/Support/GenericDomTreeConstruction.h:1544
#36 recalculate () at /usr/src/contrib/llvm-project/llvm/include/llvm/Support/GenericDomTree.h:795
#37 run () at /usr/src/contrib/llvm-project/llvm/lib/IR/Dominators.cpp:374
#38 0x2644e598 in run () at /usr/src/contrib/llvm-project/llvm/include/llvm/IR/PassManagerInternal.h:320
#39 0x276f1cf4 in getResultImpl () at /usr/src/contrib/llvm-project/llvm/include/llvm/IR/PassManagerImpl.h:156
#40 0x262b8950 in getResult<llvm::DominatorTreeAnalysis> () at /usr/src/contrib/llvm-project/llvm/include/llvm/IR/PassManager.h:409
#41 0x28f4fbe0 in operator() () at /usr/obj/usr/src/arm.armv7/tmp/usr/include/c++/v1/__functional/function.h:430
#42 operator() () at /usr/obj/usr/src/arm.armv7/tmp/usr/include/c++/v1/__functional/function.h:989
#43 runIPSCCP () at /usr/src/contrib/llvm-project/llvm/lib/Transforms/IPO/SCCP.cpp:128
#44 run () at /usr/src/contrib/llvm-project/llvm/lib/Transforms/IPO/SCCP.cpp:403
#45 0x27b85d14 in llvm::detail::PassModel<llvm::Module, llvm::IPSCCPPass, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) ()
--Type <RET> for more, q to quit, c to continue without paging--
at /usr/src/contrib/llvm-project/llvm/include/llvm/IR/PassManagerInternal.h:90
#46 0x276ee244 in run () at /usr/src/contrib/llvm-project/llvm/include/llvm/IR/PassManagerImpl.h:81
#47 0x22174ffc in RunOptimizationPipeline () at /usr/src/contrib/llvm-project/clang/lib/CodeGen/BackendUtil.cpp:1114
#48 0x2216cfb8 in EmitAssembly () at /usr/src/contrib/llvm-project/clang/lib/CodeGen/BackendUtil.cpp:1179
#49 EmitBackendOutput () at /usr/src/contrib/llvm-project/clang/lib/CodeGen/BackendUtil.cpp:1341
#50 0x225cbca0 in HandleTranslationUnit () at /usr/src/contrib/llvm-project/clang/lib/CodeGen/CodeGenAction.cpp:354
#51 0x22cff8e4 in ParseAST () at /usr/src/contrib/llvm-project/clang/lib/Parse/ParseAST.cpp:184
#52 0x22b5a7b8 in Execute () at /usr/src/contrib/llvm-project/clang/lib/Frontend/FrontendAction.cpp:1078
#53 0x22adb800 in ExecuteAction () at /usr/src/contrib/llvm-project/clang/lib/Frontend/CompilerInstance.cpp:1061
#54 0x22bf6a90 in ExecuteCompilerInvocation () at /usr/src/contrib/llvm-project/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp:280
#55 0x0002afc8 in cc1_main () at /usr/src/contrib/llvm-project/clang/tools/driver/cc1_main.cpp:284
#56 0x00038548 in ExecuteCC1Tool () at /usr/src/contrib/llvm-project/clang/tools/driver/driver.cpp:215
#57 0x227877ec in operator() () at /usr/src/contrib/llvm-project/llvm/include/llvm/ADT/STLFunctionalExtras.h:68
#58 operator() () at /usr/src/contrib/llvm-project/clang/lib/Driver/Job.cpp:440
#59 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
#60 0x27d88624 in operator() () at /usr/src/contrib/llvm-project/llvm/include/llvm/ADT/STLFunctionalExtras.h:68
#61 RunSafely () at /usr/src/contrib/llvm-project/llvm/lib/Support/CrashRecoveryContext.cpp:426
#62 0x22786e90 in Execute () at /usr/src/contrib/llvm-project/clang/lib/Driver/Job.cpp:440
#63 0x22748074 in ExecuteCommand () at /usr/src/contrib/llvm-project/clang/lib/Driver/Compilation.cpp:199
#64 0x227483d0 in ExecuteJobs () at /usr/src/contrib/llvm-project/clang/lib/Driver/Compilation.cpp:253
#65 0x22765bb8 in ExecuteCompilation () at /usr/src/contrib/llvm-project/clang/lib/Driver/Driver.cpp:1943
#66 0x00037ba4 in clang_main () at /usr/src/contrib/llvm-project/clang/tools/driver/driver.cpp:391
#67 0x000363a8 in main () at /usr/src/usr.bin/clang/clang/clang-driver.cpp:17
0x2e0ebe80: 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a
0x2e0ebe90: 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a
0x2e0ebea0: 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a
(gdb) x /1024x ((size_t*)addr)+0
0x2e0eb000: 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a
0x2e0eb010: 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a
0x2e0eb020: 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a
. . .
0x2e0ebfd0: 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a
0x2e0ebfe0: 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a
0x2e0ebff0: 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a 0x5a5a5a5a
(gdb) x /1024x ((size_t*)addr)+1024
0x2e0ec000: Cannot access memory at address 0x2e0ec000
For #0..#15: The prior examples and the above
agree about:
#5 __je_extent_alloc_wrapper zero=true
#14 tcache_alloc_small zero=false
(The others are optimized out.)
===
Mark Millard
marklmi at yahoo.com
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