Hey there,
I am trying to run a particular ELF file through Dyninst, but I get a
segfault
in Elf_X.C:
if (!shdrs[i]._elf) {
The trouble is that shdrs is an empty vector, and i is 0, so we can't
dereference
at index 0.
#0 Dyninst::Elf_X::get_shdr (this=this@entry=0x557c15ecf0a0, i=0) at
/home/thomasdullien/Desktop/sources/dyninst/dyninst/elf/src/Elf_X.C:473
#1 0x00007fd72b83f43a in Dyninst::Elf_X::findDebugFile
(this=0x557c15ecf0a0, origfilename="/home/thomasdullien/Downloads/foo.elf",
output_name="", output_buffer=@0x7fff5398c320: 0x557c15ecf470
"/home/thomasdullien/Downloads/foo.elf", output_buffer_size=@0x7fff5398c
328: 93991432156048) at
/home/thomasdullien/Desktop/sources/dyninst/dyninst/elf/src/Elf_X.C:1659
#2 0x00007fd72ba5b124 in Dyninst::Dwarf::DwarfHandle::locate_dbg_file
(this=this@entry=0x557c15ecf3d0) at
/home/thomasdullien/Desktop/sources/dyninst/dyninst/dwarf/src/dwarfHandle.C:80
#3 0x00007fd72ba5b29f in Dyninst::Dwarf::DwarfHandle::DwarfHandle
(this=0x557c15ecf3d0, filename_=..., file_=<optimized out>,
err_func_=<optimized out>) at
/home/thomasdullien/Desktop/sources/dyninst/dyninst/dwarf/src/dwarfHandle.C:73
#4 0x00007fd72ba5b9ff in Dyninst::Dwarf::DwarfHandle::createDwarfHandle
(filename_="/home/thomasdullien/Downloads/foo.elf",
file_=file_@entry=0x557c15ecf0a0,
err_func_=err_func_@entry=0x7fd72ba5b010
<Dyninst::Dwarf::DwarfHandle::defaultDwarfError(Dwarf_Error_s*, void*
)>) at
/home/thomasdullien/Desktop/sources/dyninst/dyninst/dwarf/src/dwarfHandle.C:249
Shall I try to dig further, or should this be sufficient to find the
problem?
Cheers & keep up the good work :-)
Thomas
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