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A few StackOverflows in a row cause EXC_BAD_ACCESS crash #28723

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NHDaly opened this issue Aug 17, 2018 · 2 comments
Closed

A few StackOverflows in a row cause EXC_BAD_ACCESS crash #28723

NHDaly opened this issue Aug 17, 2018 · 2 comments

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@NHDaly
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NHDaly commented Aug 17, 2018 •
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I was putzing around with some code (a custom implementation of an sql interpreter), when I introduced a bug in my code that leads to a crash in Julia 1.0. In Juno, it crashes on the first StackOverflowError, but on the repl, it only crashes on the third one.

(10:24:55) $ lldb julia1
(lldb) target create "julia1"
Current executable set to 'julia1' (x86_64).
(lldb) r
Process 55976 launched: '/usr/local/bin/julia1' (x86_64)
               _
   _       _ _(_)_     |  A fresh approach to technical computing
  (_)     | (_) (_)    |  Documentation: https://docs.julialang.org
   _ _   _| |_  __ _   |  Type "?" for help, "]?" for Pkg help.
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 1.0.0-rc1.0 (2018-08-07 16:29 UTC)
 _/ |\__'_|_|_|\__'_|  |  Official http://julialang.org/ release
|__/                   |  x86_64-apple-darwin14.5.0

julia> include("sql.jl")
@SQL

julia> # CREATE TABLE
       create_table("hi", ("id",Int))
hi
 id
---



julia> t = create_table("people", ("id",Int), ("name", String))
people
 id     | name
---     |-----



julia> insert_into_values(t, (1,"sarah"))

julia> insert_into_values(t, (2,"nathan"))

julia> insert_into_values(t, (3,"max"))

julia> select_from(t, "name")  # Even this one crashes when calling through Juno for whatever reason
ERROR: StackOverflowError:
Stacktrace:
 [1] Type at ./boot.jl:394 [inlined]
 [2] Type at ./boot.jl:403 [inlined]
 [3] Type at ./boot.jl:411 [inlined]
 [4] similar at ./abstractarray.jl:618 [inlined]
 [5] similar at ./abstractarray.jl:617 [inlined]
 [6] vect(::Symbol) at ./array.jl:130
 [7] select_from(::Table, ::Symbol) at /Users/daly/Documents/School/Khan/SQL/sql.jl:45
 [8] select_from(::Table, ::Array{Symbol,1}) at /Users/daly/Documents/School/Khan/SQL/sql.jl:47
 ... (the last 2 lines are repeated 19401 more times)
 [38811] select_from(::Table, ::Symbol) at /Users/daly/Documents/School/Khan/SQL/sql.jl:45
 [38812] select_from at /Users/daly/Documents/School/Khan/SQL/sql.jl:47 [inlined]
 [38813] select_from(::Table, ::String) at /Users/daly/Documents/School/Khan/SQL/sql.jl:45

julia> select_from(t, "*")
ERROR: StackOverflowError:
Stacktrace:
 [1] Type at ./boot.jl:394 [inlined]
 [2] Type at ./boot.jl:403 [inlined]
 [3] Type at ./boot.jl:411 [inlined]
 [4] similar at ./abstractarray.jl:618 [inlined]
 [5] similar at ./abstractarray.jl:617 [inlined]
 [6] vect(::Symbol) at ./array.jl:130
 [7] select_from(::Table, ::Symbol) at /Users/daly/Documents/School/Khan/SQL/sql.jl:45
 [8] select_from(::Table, ::Array{Symbol,1}) at /Users/daly/Documents/School/Khan/SQL/sql.jl:47
 ... (the last 2 lines are repeated 19401 more times)
 [38811] select_from(::Table, ::Symbol) at /Users/daly/Documents/School/Khan/SQL/sql.jl:45
 [38812] select_from at /Users/daly/Documents/School/Khan/SQL/sql.jl:47 [inlined]
 [38813] select_from(::Table, ::String) at /Users/daly/Documents/School/Khan/SQL/sql.jl:45

julia> select_from(t, :*)   # this one crashes in the REPL
Process 55976 stopped
* thread JuliaLang/julia#3, stop reason = EXC_BAD_ACCESS (code=2, address=0x7ffeef3ffff8)
    frame #0: 0x0000000100209650 libjulia.1.0.dylib`libunwind::LocalAddressSpace::get64(this=0x00000001005c36d8, addr=140732912369656) at AddressSpace.hpp:92
Target 0: (julia1) stopped.
(lldb) bt
* thread JuliaLang/julia#3, stop reason = EXC_BAD_ACCESS (code=2, address=0x7ffeef3ffff8)
  * frame #0: 0x0000000100209650 libjulia.1.0.dylib`libunwind::LocalAddressSpace::get64(this=0x00000001005c36d8, addr=140732912369656) at AddressSpace.hpp:92
    frame JuliaLang/julia#1: 0x000000010020dd33 libjulia.1.0.dylib`libunwind::CompactUnwinder_x86_64<libunwind::LocalAddressSpace>::stepWithCompactEncodingRBPFrame(compactEncoding=16842753, functionStart=4295950064, addressSpace=0x00000001005c36d8, registers=0x000070000906d758) at CompactUnwinder.hpp:618
    frame JuliaLang/julia#2: 0x000000010020d978 libjulia.1.0.dylib`libunwind::CompactUnwinder_x86_64<libunwind::LocalAddressSpace>::stepWithCompactEncoding(compactEncoding=16842753, functionStart=4295950064, addressSpace=0x00000001005c36d8, registers=0x000070000906d758) at CompactUnwinder.hpp:545
    frame JuliaLang/julia#3: 0x000000010020d8f9 libjulia.1.0.dylib`libunwind::UnwindCursor<libunwind::LocalAddressSpace, libunwind::Registers_x86_64>::stepWithCompactEncoding(this=0x000070000906d700, (null)=0x000070000906d4d0) at UnwindCursor.hpp:339
    frame JuliaLang/julia#4: 0x000000010020ab7c libjulia.1.0.dylib`libunwind::UnwindCursor<libunwind::LocalAddressSpace, libunwind::Registers_x86_64>::stepWithCompactEncoding(this=0x000070000906d700) at UnwindCursor.hpp:337
    frame JuliaLang/julia#5: 0x0000000100209f6a libjulia.1.0.dylib`libunwind::UnwindCursor<libunwind::LocalAddressSpace, libunwind::Registers_x86_64>::step(this=0x000070000906d700) at UnwindCursor.hpp:876
    frame JuliaLang/julia#6: 0x000000010020922e libjulia.1.0.dylib`::unw_step(cursor=0x000070000906d700) at libuwind.cxx:288
    frame JuliaLang/julia#7: 0x00000001000f0e68 libjulia.1.0.dylib`jl_unw_stepn [inlined] jl_unw_step(cursor=0x000070000906d700, sp=0x00007ffeef400000, fp=0x0000000000000000) at stackwalk.c:376 [opt]
    frame JuliaLang/julia#8: 0x00000001000f0e12 libjulia.1.0.dylib`jl_unw_stepn(cursor=0x000070000906d700, ip=0x000000010bf00000, sp=0x0000000000000000, maxsize=80000, add_interp_frames=1) at stackwalk.c:51 [opt]
    frame JuliaLang/julia#9: 0x00000001000f1035 libjulia.1.0.dylib`rec_backtrace_ctx(data=0x000000010bf00000, maxsize=80000, context=<unavailable>) at stackwalk.c:86 [opt]
    frame JuliaLang/julia#10: 0x00000001000ff4e2 libjulia.1.0.dylib`jl_throw_in_thread(tid=<unavailable>, thread=775, exception=0x0000000107bd23c0) at signals-mach.c:148 [opt]
    frame JuliaLang/julia#11: 0x00000001000ff318 libjulia.1.0.dylib`catch_exception_raise(exception_port=<unavailable>, thread=775, task=<unavailable>, exception=1, code=<unavailable>, code_count=<unavailable>) at signals-mach.c:245 [opt]
    frame JuliaLang/julia#12: 0x00007fff7acc78b1 libsystem_kernel.dylib`_Xexception_raise + 159
    frame JuliaLang/julia#13: 0x00007fff7acc7b50 libsystem_kernel.dylib`exc_server + 80
    frame JuliaLang/julia#14: 0x00007fff7acd7f94 libsystem_kernel.dylib`mach_msg_server + 417
    frame JuliaLang/julia#15: 0x00000001000ff05d libjulia.1.0.dylib`mach_segv_listener(arg=<unavailable>) at signals-mach.c:75 [opt]
    frame JuliaLang/julia#16: 0x00007fff7aea9661 libsystem_pthread.dylib`_pthread_body + 340
    frame JuliaLang/julia#17: 0x00007fff7aea950d libsystem_pthread.dylib`_pthread_start + 377
    frame JuliaLang/julia#18: 0x00007fff7aea8bf9 libsystem_pthread.dylib`thread_start + 13
(lldb)

(And this time, I've made sure that i don't have anything in my juliarc... 😊🙈)

Let me know if i can help more! :)
@KristofferC
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KristofferC commented Aug 17, 2018 •
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Dup of JuliaLang/LinearAlgebra.jl#517, #25715 perhaps (stackoverflow crashes mac)?

@NHDaly
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NHDaly commented Aug 17, 2018

Ah yes, it appears so. And also #17109.

Thanks.

@NHDaly NHDaly closed this as completed Aug 17, 2018
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@KristofferC @NHDaly