[lldb-dev] "bad_alloc" crash after downloading dependent modules.

Wed Jun 10 08:12:15 PDT 2015

Hi Folks,

I have been seeing a crash when connecting lldb tip to a remote arm 
lldb-server platform running on android.
The crash occurs directly after all the remote modules have been downloaded.
I have attached a transcript of a session which shows the error and 
displays a backtrace after the crash.

The same crash can be reproduced on both linux and windows.

Might I be doing something wrong with my setup / build?
Is 32bit Arm + Android a stable target for lldb / lldb-server or is this 
somewhat unstable?

I should point out that if I connect to lldb-server in gdbserver mode 
rather then platform this problem doesn't present itself.
That's perhaps because in that case the platform defaults to 
remote-linux rather then remote-android.

Thanks,
Aidan
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Reading symbols from lldb-3.7.0...done.
(gdb) r
Starting program: /home/aidan/rs/build/bin/lldb-3.7.0 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffed0cf700 (LWP 15257)]
(lldb) platform select remote-android
  Platform: remote-android
 Connected: no
(lldb) platform connect connect://localhost:1234
  Platform: remote-android
    Triple: arm--linux-android
OS Version: 3.10.40 (3.10.40-g54c3891)
    Kernel: #1 SMP PREEMPT Wed Dec 10 21:35:39 UTC 2014
  Hostname: localhost
 Connected: yes
WorkingDir: /data
(lldb) platform process attach -p 13582
[New Thread 0x7fffe7fff700 (LWP 15261)]
[New Thread 0x7fffe77fe700 (LWP 15262)]
(lldb) terminate called after throwing an instance of 'std::bad_alloc'
  what():  std::bad_alloc

Program received signal SIGABRT, Aborted.
[Switching to Thread 0x7fffe77fe700 (LWP 15262)]
0x00007ffff0e5acc9 in raise () from /lib/x86_64-linux-gnu/libc.so.6
(gdb) bt
#0  0x00007ffff0e5acc9 in raise () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007ffff0e5e0d8 in abort () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007ffff12496b5 in __gnu_cxx::__verbose_terminate_handler() () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#3  0x00007ffff1247836 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4  0x00007ffff1247863 in std::terminate() () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#5  0x00007ffff1247aa2 in __cxa_throw () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#6  0x00007ffff1247f8d in operator new(unsigned long) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#7  0x00007ffff34a49e4 in __gnu_cxx::new_allocator<unsigned char>::allocate (this=0x7fffe77fcf00, __n=27527888509075457) at /usr/include/c++/4.8/ext/new_allocator.h:104
#8  0x00007ffff34a4653 in std::_Vector_base<unsigned char, std::allocator<unsigned char> >::_M_allocate (this=0x7fffe77fcf00, __n=27527888509075457) at /usr/include/c++/4.8/bits/stl_vector.h:168
#9  0x00007ffff3cf0fd7 in std::_Vector_base<unsigned char, std::allocator<unsigned char> >::_M_create_storage (this=0x7fffe77fcf00, __n=27527888509075457) at /usr/include/c++/4.8/bits/stl_vector.h:181
#10 0x00007ffff3cf0ef4 in std::_Vector_base<unsigned char, std::allocator<unsigned char> >::_Vector_base (this=0x7fffe77fcf00, __n=27527888509075457, __a=...) at /usr/include/c++/4.8/bits/stl_vector.h:136
#11 0x00007ffff3cf0e37 in std::vector<unsigned char, std::allocator<unsigned char> >::vector (this=0x7fffe77fcf00, __n=27527888509075457, __value=@0x7fffe77fcf7c: 0 '\000', __a=...) at /usr/include/c++/4.8/bits/stl_vector.h:283
#12 0x00007ffff3cff31d in std::vector<unsigned char, std::allocator<unsigned char> >::_M_fill_assign (this=0x7fffda5a31b8, __n=27527888509075457, __val=@0x7fffe77fcf7c: 0 '\000') at /usr/include/c++/4.8/bits/vector.tcc:223
#13 0x00007ffff3cff1d1 in std::vector<unsigned char, std::allocator<unsigned char> >::assign (this=0x7fffda5a31b8, __n=27527888509075457, __val=@0x7fffe77fcf7c: 0 '\000') at /usr/include/c++/4.8/bits/stl_vector.h:480
#14 0x00007ffff3cfee95 in lldb_private::DataBufferHeap::DataBufferHeap (this=0x7fffda5a31b0, n=27527888509075457, ch=0 '\000') at /home/aidan/rs/llvm/tools/lldb/source/Core/DataBufferHeap.cpp:30
#15 0x00007ffff3d4de68 in lldb_private::Module::GetMemoryObjectFile (this=0x7fffda620bd0, process_sp=..., header_addr=2676928512, error=..., size_to_read=27527888509075457) at /home/aidan/rs/llvm/tools/lldb/source/Core/Module.cpp:359
#16 0x00007ffff3f347ad in lldb_private::Process::ReadModuleFromMemory (this=0x7e5100, file_spec=..., header_addr=2676928512, size_to_read=27527888509075457) at /home/aidan/rs/llvm/tools/lldb/source/Target/Process.cpp:3034
#17 0x00007ffff4158877 in JITLoaderGDB::ReadJITDescriptorImpl<unsigned int> (this=0x7fffd800ad00, all_entries=true) at /home/aidan/rs/llvm/tools/lldb/source/Plugins/JITLoader/GDB/JITLoaderGDB.cpp:272
#18 0x00007ffff4157607 in JITLoaderGDB::ReadJITDescriptor (this=0x7fffd800ad00, all_entries=true) at /home/aidan/rs/llvm/tools/lldb/source/Plugins/JITLoader/GDB/JITLoaderGDB.cpp:209
#19 0x00007ffff4157216 in JITLoaderGDB::SetJITBreakpoint (this=0x7fffd800ad00, module_list=...) at /home/aidan/rs/llvm/tools/lldb/source/Plugins/JITLoader/GDB/JITLoaderGDB.cpp:137
#20 0x00007ffff4157011 in JITLoaderGDB::ModulesDidLoad (this=0x7fffd800ad00, module_list=...) at /home/aidan/rs/llvm/tools/lldb/source/Plugins/JITLoader/GDB/JITLoaderGDB.cpp:91
#21 0x00007ffff3fa500f in lldb_private::JITLoaderList::ModulesDidLoad (this=0x7fffd80093d0, module_list=...) at /home/aidan/rs/llvm/tools/lldb/source/Target/JITLoaderList.cpp:76
#22 0x00007ffff3f3d960 in lldb_private::Process::ModulesDidLoad (this=0x7e5100, module_list=...) at /home/aidan/rs/llvm/tools/lldb/source/Target/Process.cpp:6478
#23 0x00007ffff3f6ba7b in lldb_private::Target::ModulesDidLoad (this=0x7f25c0, module_list=...) at /home/aidan/rs/llvm/tools/lldb/source/Target/Target.cpp:1289
#24 0x00007ffff3f6b883 in lldb_private::Target::ModuleAdded (this=0x7f25c0, module_list=..., module_sp=...) at /home/aidan/rs/llvm/tools/lldb/source/Target/Target.cpp:1257
#25 0x00007ffff3d58619 in lldb_private::ModuleList::AppendImpl (this=0x7f28a0, module_sp=..., use_notifier=true) at /home/aidan/rs/llvm/tools/lldb/source/Core/ModuleList.cpp:111
#26 0x00007ffff3d58650 in lldb_private::ModuleList::Append (this=0x7f28a0, module_sp=...) at /home/aidan/rs/llvm/tools/lldb/source/Core/ModuleList.cpp:118
#27 0x00007ffff3f6d42e in lldb_private::Target::GetSharedModule (this=0x7f25c0, module_spec=..., error_ptr=0x0) at /home/aidan/rs/llvm/tools/lldb/source/Target/Target.cpp:1813
#28 0x00007ffff4224df1 in lldb_private::DynamicLoader::LoadModuleAtAddress (this=0x7fffd8009710, file=..., link_map_addr=3049056968, base_addr=3032113152) at /home/aidan/rs/llvm/tools/lldb/source/Core/DynamicLoader.cpp:185
#29 0x00007ffff402dfb2 in DynamicLoaderPOSIXDYLD::LoadAllCurrentModules (this=0x7fffd8009710) at /home/aidan/rs/llvm/tools/lldb/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.cpp:530
#30 0x00007ffff402c743 in DynamicLoaderPOSIXDYLD::DidAttach (this=0x7fffd8009710) at /home/aidan/rs/llvm/tools/lldb/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.cpp:183
#31 0x00007ffff3f36849 in lldb_private::Process::CompleteAttach (this=0x7e5100) at /home/aidan/rs/llvm/tools/lldb/source/Target/Process.cpp:3627
#32 0x00007ffff3f3593c in lldb_private::Process::AttachCompletionHandler::PerformAction (this=0x804e30, event_sp=...) at /home/aidan/rs/llvm/tools/lldb/source/Target/Process.cpp:3378
#33 0x00007ffff3f3898f in lldb_private::Process::HandlePrivateEvent (this=0x7e5100, event_sp=...) at /home/aidan/rs/llvm/tools/lldb/source/Target/Process.cpp:4420
#34 0x00007ffff3f390da in lldb_private::Process::RunPrivateStateThread (this=0x7e5100) at /home/aidan/rs/llvm/tools/lldb/source/Target/Process.cpp:4614
#35 0x00007ffff3f38d84 in lldb_private::Process::PrivateStateThread (arg=0x7e5100) at /home/aidan/rs/llvm/tools/lldb/source/Target/Process.cpp:4538
#36 0x00007ffff3ce9bbf in lldb_private::HostNativeThreadBase::ThreadCreateTrampoline (arg=0x804e10) at /home/aidan/rs/llvm/tools/lldb/source/Host/common/HostNativeThreadBase.cpp:81
#37 0x00007ffff14f5182 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#38 0x00007ffff0f1e47d in clone () from /lib/x86_64-linux-gnu/libc.so.6
(gdb) 