Re: [DynInst_API:] SymtabAPI segmentation fault

[Buddhika Chamith Kahawitage Don <budkahaw@xxxxxx>]

Sure. I will update and report back.

Thanks

Buddhika

On Mon, Jan 7, 2019 at 8:45 PM Xiaozhu Meng <mxz297@xxxxxxxxx> wrote:

Hi,

Can you upgrade to use Dyninst 10.0.0? Dyninst 10 contains many bug fixes and new features over 9.3.2, but you will need to use libdw-0.173. If the same problem shows up, please let me know and I will take a look at it.

Thanks,

--Xiaozhu

On Sat, Jan 5, 2019 at 9:56 PM Buddhika Chamith Kahawitage Don <budkahaw@xxxxxx> wrote:

Hi,

I am trying to use SymtabAPI to analyze the register usage of a binary. My implementation fails on some binaries (built with -g) with below stack trace.

I have installed libdw-0.170 on my system using Ubuntu package manager. Does this look familiar?

#0Â Dyninst::SymtabAPI::DwarfWalker::findDieName (dbg=dbg@entry=0x5555557be3c0, die=0x5555559b3840, name="")
ÂÂÂ at /home/buddhika/Builds/dyninst-9.3.2/symtabAPI/src/dwarfWalker.C:1448
#1Â 0x00007ffff7226767 in Dyninst::SymtabAPI::Object::dwarf_parse_aranges (this=this@entry=0x5555557b6440,
ÂÂÂ dbg=dbg@entry=0x5555557be3c0, dies_seen=std::set with 0 elements)
ÂÂÂ at /home/buddhika/Builds/dyninst-9.3.2/symtabAPI/src/Object-elf.C:2461
#2Â 0x00007ffff7226b75 in Dyninst::SymtabAPI::Object::fix_global_symbol_modules_static_dwarf (
ÂÂÂ this=this@entry=0x5555557b6440) at /home/buddhika/Builds/dyninst-9.3.2/symtabAPI/src/Object-elf.C:2490
#3Â 0x00007ffff7229ab4 in Dyninst::SymtabAPI::Object::load_object (this=this@entry=0x5555557b6440,
ÂÂÂ alloc_syms=alloc_syms@entry=true) at /home/buddhika/Builds/dyninst-9.3.2/symtabAPI/src/Object-elf.C:1602
#4Â 0x00007ffff722aa1e in Dyninst::SymtabAPI::Object::Object (this=0x5555557b6440, mf_=0x5555557b0460,
ÂÂÂ err_func=<optimized out>, alloc_syms=<optimized out>, st=<optimized out>)
ÂÂÂ at /home/buddhika/Builds/dyninst-9.3.2/symtabAPI/src/Object-elf.C:2967
#5Â 0x00007ffff71e63d3 in Dyninst::SymtabAPI::Symtab::Symtab (this=0x5555557b5230, filename="",
ÂÂÂ defensive_bin=<optimized out>, err=@0x7fffffffd61f: false)
ÂÂÂ at /home/buddhika/Builds/dyninst-9.3.2/symtabAPI/src/Symtab.C:1261
#6Â 0x00007ffff71e68d1 in Dyninst::SymtabAPI::Symtab::openFile (obj=@0x7fffffffd6a0: 0x0, filename="CG",
ÂÂÂ def_binary=Dyninst::SymtabAPI::Symtab::NotDefensive)
ÂÂÂ at /home/buddhika/Builds/dyninst-9.3.2/symtabAPI/src/Symtab.C:2077

Regards

Buddhika

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