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Corruption/segfault with Array of primitive type with (some) non-power of 2 length #29053

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rfourquet opened this issue Sep 5, 2018 · 3 comments
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Corruption/segfault with Array of primitive type with (some) non-power of 2 length #29053

rfourquet opened this issue Sep 5, 2018 · 3 comments
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arrays [a, r, r, a, y, s] bug Indicates an unexpected problem or unintended behavior

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@rfourquet
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E.g:

julia> primitive type U 24 end

julia> U() = Base.zext_int(U, 0x0);

julia> U()
U(0x000000)

julia> fill(U(), 1000);
free(): corrupted unsorted chunks

signal (6): Aborted
in expression starting at no file:0
^C^C^C^C^CWARNING: Force throwing a SIGINT
^C^C^C^Z

In another try, I got a segfault, of which here is the first few lines (I can include more if needed):

signal (11): Segmentation fault
in expression starting at no file:0
jl_gc_pool_alloc at /local/src/julia/src/gc.c:964
jl_gc_alloc_ at /local/src/julia/src/julia_internal.h:274 [inlined]
jl_gc_alloc at /local/src/julia/src/gc.c:2673
_new_array_ at /local/src/julia/src/array.c:100

May be related to #26026
@rfourquet rfourquet added bug Indicates an unexpected problem or unintended behavior arrays [a, r, r, a, y, s] labels Sep 5, 2018
@JeffBezanson JeffBezanson added this to the 1.0.x milestone Sep 5, 2018
@chethega
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chethega commented Sep 6, 2018

I am pretty sure you are right that this is a dup of #26026.

@mikhail-j
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mikhail-j commented Sep 14, 2018 •
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@rfourquet @JeffBezanson
In my case, I used:

julia> primitive type Int24 <: Integer 24 end

Now, wrap Int24 in a struct:

julia> struct U
           data::Int24
       end

Create an Int24 wrapped in a struct:

julia> int24_struct_wrap=U(Base.zext_int(Int24, 0x0))
U(Int24(0x000000))

Allocating an array of 1000 structs containing an Int24 does not lead to crash/segmentation fault:

julia> int24_array=fill(int24_struct_wrap, 1000)
1000-element Array{U, 1}:
 U(Int24(0x000000))
 U(Int24(0x000000))
   ?
 U(Int24(0x000000))
 U(Int24(0x000000))

The size of int24_array is 4000 bytes:

julia> sizeof(int24_array)
4000

This shows that Int24 can be used without issues if directly used with an array of structs wrapping an Int24 data type.

I would like to point out that generating an Array{Int24, 1} from Array{U, 1} using map() also causes julia to crash:

julia> int24_array_mapped=map(x->x.data, int24_array)
Please submit a bug report with steps to reproduce this fault, and any error messages that follow (in their entirety).
Thanks.
Exception: EXCEPTION_ACCESS_VIOLATION at 0x77cdccb1 -- RtlFreeHeap at C:\Windows\SYSTEM32\ntdll.dll (unknown line)
in expression starting at no file:0
RtlFreeHeap at C:\Windows\SYSTEM32\ntdll.dll (unknown line)
EtwEventWriteStartScenario at C:\Windows\SYSTEM32\ntdll.dll (unknown line)
RtlAllocateHeap at C:\Windows\SYSTEM32\ntdll.dll (unknown line)
malloc at C:\Windows\system32\msvcrt.dll (unknown line)
Znwy at C:\Users\%USERNAME%\Julia-1.0.0\bin\libstdc++-6.dll (unknown line)
_ZN12_GLOBAL__N_18RAGreedy20runOnMachineFunctionERN4llvm15MachineFunctionE at C:\Users\%USERNAME%\Julia-1.0.0\bin\LLVM.dll (unknown line)
_ZN4llvm19MachineFunctionPass13runOnFunctionERNS_8FunctionE at C:\Users\%USERNAME%\Julia-1.0.0\bin\LLVM.dll (unknown line)
_ZN4llvm13FPPassManager13runOnFunctionERNS_8FunctionE at C:\Users\%USERNAME%\Julia-1.0.0\bin\LLVM.dll (unknown line)
_ZN4llvm13FPPassManager11runOnModuleERNS_6ModuleE at C:\Users\%USERNAME%\Julia-1.0.0\bin\LLVM.dll (unknown line)
_ZN4llvm6legacy15PassManagerImpl3runERNS_6ModuleE at C:\Users\%USERNAME%\Julia-1.0.0\bin\LLVM.dll (unknown line)
operator() at /home/Administrator/buildbot/worker/package_win64/build/src/home/Administrator/buildbot/worker/package_win64/build/src\jitlayers.cpp:481
addModule at /home/Administrator/buildbot/worker/package_win64/build/src/home/Administrator/buildbot/worker/package_win64/build/usr/include/llvm/ExecutionEngine/Orc\IRCompileLayer.h:57 [inlined]
addModule at /home/Administrator/buildbot/worker/package_win64/build/src/home/Administrator/buildbot/worker/package_win64/build/src\jitlayers.cpp:608
jl_add_to_ee at /home/Administrator/buildbot/worker/package_win64/build/src/home/Administrator/buildbot/worker/package_win64/build/src\jitlayers.cpp:855 [inlined]
jl_finalize_function at /home/Administrator/buildbot/worker/package_win64/build/src/home/Administrator/buildbot/worker/package_win64/build/src\jitlayers.cpp:863
getAddressForFunction at /home/Administrator/buildbot/worker/package_win64/build/src/home/Administrator/buildbot/worker/package_win64/build/src\codegen.cpp:1299
jl_generate_fptr at /home/Administrator/buildbot/worker/package_win64/build/src/home/Administrator/buildbot/worker/package_win64/build/src\codegen.cpp:1410
jl_compile_method_internal at /home/Administrator/buildbot/worker/package_win64/build/src\gf.c:1821 [inlined]
jl_fptr_trampoline at /home/Administrator/buildbot/worker/package_win64/build/src\gf.c:1828
jl_apply_generic at /home/Administrator/buildbot/worker/package_win64/build/src\gf.c:2182
jl_apply at /home/Administrator/buildbot/worker/package_win64/build/src\julia.h:1536 [inlined]
jl_f__apply at /home/Administrator/buildbot/worker/package_win64/build/src\builtins.c:556
jl_f__apply_latest at /home/Administrator/buildbot/worker/package_win64/build/src\builtins.c:594
#invokelatest#1 at .\essentials.jl:686 [inlined]
invokelatest at .\essentials.jl:685 [inlined]
#27 at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.0\REPL\src\LineEdit.jl:1319
jl_fptr_trampoline at /home/Administrator/buildbot/worker/package_win64/build/src\gf.c:1829
jl_apply_generic at /home/Administrator/buildbot/worker/package_win64/build/src\gf.c:2182
prompt! at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.0\REPL\src\LineEdit.jl:2353
run_interface at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.0\REPL\src\LineEdit.jl:2256
jl_apply_generic at /home/Administrator/buildbot/worker/package_win64/build/src\gf.c:2182
run_frontend at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.0\REPL\src\REPL.jl:1029
run_repl at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.0\REPL\src\REPL.jl:191
jl_apply_generic at /home/Administrator/buildbot/worker/package_win64/build/src\gf.c:2182
#720 at .\logging.jl:311
unknown function (ip: 00000000258F0E74)
jl_fptr_trampoline at /home/Administrator/buildbot/worker/package_win64/build/src\gf.c:1829
jl_apply_generic at /home/Administrator/buildbot/worker/package_win64/build/src\gf.c:2182
jl_apply at /home/Administrator/buildbot/worker/package_win64/build/src\julia.h:1536 [inlined]
jl_f__apply at /home/Administrator/buildbot/worker/package_win64/build/src\builtins.c:556
jl_f__apply_latest at /home/Administrator/buildbot/worker/package_win64/build/src\builtins.c:594
#invokelatest#1 at .\essentials.jl:686 [inlined]
invokelatest at .\essentials.jl:685 [inlined]
macro expansion at .\logging.jl:308 [inlined]
run_main_repl at .\client.jl:330
exec_options at .\client.jl:242
_start at .\client.jl:421
jl_apply_generic at /home/Administrator/buildbot/worker/package_win64/build/src\gf.c:2182
jl_apply at /home/Administrator/buildbot/worker/package_win64/build/src\julia.h:1536 [inlined]
true_main at /home/Administrator/buildbot/worker/package_win64/build/ui\repl.c:112
wmain at /home/Administrator/buildbot/worker/package_win64/build/ui\repl.c:233
__tmainCRTStartup at /usr/src/debug/mingw64-x86_64-runtime-5.0.3-1/crt\crtexe.c:329
mainCRTStartup at /usr/src/debug/mingw64-x86_64-runtime-5.0.3-1/crt\crtexe.c:212
BaseThreadInitThunk at C:\Windows\system32\kernel32.dll (unknown line)
RtlUserThreadStart at C:\Windows\SYSTEM32\ntdll.dll (unknown line)
Allocations: 1392096 (Pool: 1391770; Big: 326); GC: 2
LLVM ERROR: starting new .cfi frame before finishing the previous one

@felipenoris felipenoris mentioned this issue Sep 14, 2018
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@rfourquet rfourquet mentioned this issue Oct 7, 2018
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@chethega chethega mentioned this issue Apr 10, 2019
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@rfourquet rfourquet mentioned this issue Sep 17, 2019
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@JeffBezanson
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Dup of #26026.

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