[lldb-dev] SystemInitializerCommon::Initialize called twice with shared llvm build
İsmail Dönmez
ismail at donmez.ws
Wed Jul 15 02:30:14 PDT 2015
Hi,
Problem seems to be lldb-server itself, looks like python code tries
to re-initialize, see :
λ gdb --args lldb-server g
(gdb) b lldb_private::SystemInitializerCommon::Initialize()
Function "lldb_private::SystemInitializerCommon::Initialize()" not defined.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (lldb_private::SystemInitializerCommon::Initialize()) pending.
(gdb) r
Starting program: /opt/clang/bin/lldb-server g
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Breakpoint 1, lldb_private::SystemInitializerCommon::Initialize
(this=0x1f88670) at
../tools/lldb/source/Initialization/SystemInitializerCommon.cpp:96
96 Log::Initialize();
(gdb) bt
#0 lldb_private::SystemInitializerCommon::Initialize (this=0x1f88670)
at ../tools/lldb/source/Initialization/SystemInitializerCommon.cpp:96
#1 0x00007fc7709e56aa in
lldb_private::SystemLifetimeManager::Initialize (this=<optimized out>,
initializer=..., plugin_callback=0x0) at
../tools/lldb/source/Initialization/SystemLifetimeManager.cpp:43
#2 0x000000000041707e in initialize () at
../tools/lldb/tools/lldb-server/lldb-server.cpp:38
#3 0x0000000000416f5e in main (argc=2, argv=0x7ffc22f92208) at
../tools/lldb/tools/lldb-server/lldb-server.cpp:62
(gdb) c
Continuing.
[New process 26104]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Thread 0x7fc77128c740 (LWP 26104) is executing new program: /bin/bash
Thread 0x7fc77128c740 (LWP 26104) is executing new program: /bin/bash
[New process 26107]
process 26107 is executing new program: /usr/bin/getopt
[Inferior 3 (process 26107) exited with code 04]
(gdb) [New process 26108]
process 26108 is executing new program: /usr/bin/getopt
[Inferior 4 (process 26108) exited normally]
[New process 26109]
process 26109 is executing new program: /usr/bin/basename
[Inferior 5 (process 26109) exited normally]
[New process 26110]
process 26110 is executing new program: /usr/bin/basename
[Inferior 6 (process 26110) exited normally]
[New process 26111]
process 26111 is executing new program: /usr/bin/basename
[Inferior 7 (process 26111) exited normally]
[New process 26112]
process 26112 is executing new program: /usr/bin/basename
[Inferior 8 (process 26112) exited normally]
[New process 26113]
process 26113 is executing new program: /usr/bin/basename
[Inferior 9 (process 26113) exited normally]
[New process 26114]
process 26114 is executing new program: /usr/bin/basename
[Inferior 10 (process 26114) exited normally]
[New process 26115]
process 26115 is executing new program: /usr/bin/basename
[Inferior 11 (process 26115) exited normally]
[New process 26116]
process 26116 is executing new program: /usr/bin/basename
[Inferior 12 (process 26116) exited normally]
[New process 26117]
[New process 26118]
[New process 26119]
[Inferior 14 (process 26118) exited normally]
process 26119 is executing new program: /usr/bin/sed
[Inferior 15 (process 26119) exited normally]
[Inferior 13 (process 26117) exited normally]
[Inferior 2 (process 26104) exited normally]
[New process 26120]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Thread 0x7fc77128c740 (LWP 26120) is executing new program: /bin/bash
[New process 26121]
process 26121 is executing new program: /sbin/ldconfig
[Inferior 17 (process 26121) exited normally]
[Inferior 16 (process 26120) exited normally]
Breakpoint 1, lldb_private::SystemInitializerCommon::Initialize
(this=0x1fb7ed0) at
../tools/lldb/source/Initialization/SystemInitializerCommon.cpp:96
96 Log::Initialize();
bt
#0 lldb_private::SystemInitializerCommon::Initialize (this=0x1fb7ed0)
at ../tools/lldb/source/Initialization/SystemInitializerCommon.cpp:96
#1 0x00007fc77080a4fd in
lldb_private::SystemInitializerFull::Initialize (this=0x1fb7ed0) at
../tools/lldb/source/API/SystemInitializerFull.cpp:226
#2 0x00007fc7709e56aa in
lldb_private::SystemLifetimeManager::Initialize (this=<optimized out>,
initializer=..., plugin_callback=0x7fc7707d1ac0
<LoadPlugin(std::__1::shared_ptr<lldb_private::Debugger> const&,
lldb_private::FileSpec const&, lldb_private::Error&)>) at
../tools/lldb/source/Initialization/SystemLifetimeManager.cpp:43
#3 0x00007fc7707d1a97 in lldb::SBDebugger::Initialize () at
../tools/lldb/source/API/SBDebugger.cpp:123
#4 0x00007fc77083f908 in _wrap_SBDebugger_Initialize (args=<optimized
out>) at tools/lldb/scripts/LLDBWrapPython.cpp:23598
#5 0x00007fc76a8bffe7 in call_function (oparg=<optimized out>,
pp_stack=0x7ffc22f917e0) at Python/ceval.c:4035
#6 PyEval_EvalFrameEx () at Python/ceval.c:2681
#7 0x00007fc76a8c2642 in fast_function (nk=<optimized out>,
na=<optimized out>, n=0, pp_stack=0x7ffc22f91920, func=0x7fc763ae99b0)
at Python/ceval.c:4121
#8 call_function (oparg=<optimized out>, pp_stack=0x7ffc22f91920) at
Python/ceval.c:4056
#9 PyEval_EvalFrameEx () at Python/ceval.c:2681
#10 0x00007fc76a8be862 in PyEval_EvalCodeEx () at Python/ceval.c:3267
#11 0x00007fc76a8e22a6 in PyEval_EvalCode (co=co at entry=0x7fc7642517b0,
globals=globals at entry=0x7fc77117bd70,
locals=locals at entry=0x7fc77117bd70) at Python/ceval.c:669
#12 0x00007fc76a8e8be8 in PyImport_ExecCodeModuleEx () at Python/import.c:713
#13 0x00007fc76a8e88f7 in load_source_module () at Python/import.c:1103
#14 0x00007fc76a8e8d37 in load_package () at Python/import.c:1170
#15 0x00007fc76a8c4a8d in import_submodule (fullname=0x2016e50 "lldb",
subname=<optimized out>, mod=0x7fc76ab63f40 <_Py_NoneStruct>) at
Python/import.c:2704
#16 load_next (p_buflen=<synthetic pointer>, buf=0x2016e50 "lldb",
p_name=<synthetic pointer>, altmod=<optimized out>, mod=<optimized
out>) at Python/import.c:2519
#17 import_module_level (locals=<optimized out>, level=<optimized
out>, fromlist=0x7fc76ab63f40 <_Py_NoneStruct>, globals=<optimized
out>, name=<optimized out>) at Python/import.c:2228
#18 PyImport_ImportModuleLevel () at Python/import.c:2292
#19 0x00007fc76a8bdbf8 in builtin___import__ () at Python/bltinmodule.c:49
#20 0x00007fc76a8aa36b in PyObject_Call () at Objects/abstract.c:2529
#21 0x00007fc76a8c2890 in PyEval_CallObjectWithKeywords () at
Python/ceval.c:3904
#22 0x00007fc76a8c02f7 in PyEval_EvalFrameEx () at Python/ceval.c:2348
#23 0x00007fc76a8be862 in PyEval_EvalCodeEx () at Python/ceval.c:3267
#24 0x00007fc76a8e22a6 in PyEval_EvalCode (co=co at entry=0x7fc77116a3b0,
globals=globals at entry=0x7fc77121ad70,
locals=locals at entry=0x7fc77121ad70) at Python/ceval.c:669
#25 0x00007fc76a8ec37d in run_mod (mod=<optimized out>,
filename=filename at entry=0x7fc76a8f6aeb "<string>",
globals=globals at entry=0x7fc77121ad70,
locals=locals at entry=0x7fc77121ad70, flags=flags at entry=0x0,
arena=arena at entry=0x2051da0) at Python/pythonrun.c:1371
#26 0x00007fc76a8ec414 in PyRun_StringFlags
(str=str at entry=0x7fc770cf45b6 "sys.dont_write_bytecode = 1; import
lldb.embedded_interpreter; from lldb.embedded_interpreter import
run_python_interpreter; from lldb.embedded_interpreter import
run_one_line", start=start at entry=257, globals=0x7fc77121ad70,
locals=0x7fc77121ad70, flags=flags at entry=0x0) at
Python/pythonrun.c:1334
#27 0x00007fc76a88f0ed in PyRun_SimpleStringFlags
(command=0x7fc770cf45b6 "sys.dont_write_bytecode = 1; import
lldb.embedded_interpreter; from lldb.embedded_interpreter import
run_python_interpreter; from lldb.embedded_interpreter import
run_one_line", flags=0x0) at Python/pythonrun.c:975
#28 0x00007fc770a15ac3 in
lldb_private::ScriptInterpreterPython::InitializePrivate () at
../tools/lldb/source/Interpreter/ScriptInterpreterPython.cpp:3140
#29 0x00007fc7709e54ea in
lldb_private::SystemInitializerCommon::Initialize (this=<optimized
out>) at ../tools/lldb/source/Initialization/SystemInitializerCommon.cpp:144
#30 0x00007fc7709e56aa in
lldb_private::SystemLifetimeManager::Initialize (this=<optimized out>,
initializer=..., plugin_callback=0x0) at
../tools/lldb/source/Initialization/SystemLifetimeManager.cpp:43
#31 0x000000000041707e in initialize () at
../tools/lldb/tools/lldb-server/lldb-server.cpp:38
#32 0x0000000000416f5e in main (argc=2, argv=0x7ffc22f92208) at
../tools/lldb/tools/lldb-server/lldb-server.cpp:62
On Tue, Jul 14, 2015 at 6:03 PM, Pavel Labath <labath at google.com> wrote:
> Hi,
>
> I have tried to follow your setup as closely as possible and I still
> am not able to reproduce this. :/
>
> Also, the backtrace you provided are quite strange also. The first one
> terminates and lldb-server main, while the second one ends in lldb.
> This is to be expected if they are from different processes since both
> of them do initialization. Are you sure these backtraces are from the
> same process? If so, then please find out why are both main()
> functions being executed.
>
> pl
>
>
> On 14 July 2015 at 12:04, İsmail Dönmez <ismail at donmez.ws> wrote:
>> And setting a break point on
>> lldb_private::SystemInitializerCommon::Initialize() shows that 2
>> initializations indeed:
>>
>> First one:
>>
>> #0 lldb_private::SystemInitializerCommon::Initialize (this=0x1ccec10)
>> at ../tools/lldb/source/Initialization/SystemInitializerCommon.cpp:96
>> #1 0x00007f76d64385cd in
>> lldb_private::SystemInitializerFull::Initialize (this=0x1ccec10) at
>> ../tools/lldb/source/API/SystemInitializerFull.cpp:226
>> #2 0x00007f76d6612a3a in
>> lldb_private::SystemLifetimeManager::Initialize (this=<optimized out>,
>> initializer=..., plugin_callback=0x7f76d63ffbf0
>> <LoadPlugin(std::__1::shared_ptr<lldb_private::Debugger> const&,
>> lldb_private::FileSpec const&, lldb_private::Error&)>) at
>> ../tools/lldb/source/Initialization/SystemLifetimeManager.cpp:43
>> #3 0x00007f76d63ffbc7 in lldb::SBDebugger::Initialize () at
>> ../tools/lldb/source/API/SBDebugger.cpp:123
>> #4 0x00000000004063bb in main (argc=1, argv=0x7ffc50c8c948,
>> envp=0x7f76d6438f80 <LLDBSwigPythonWatchpointCallbackFunction(char
>> const*, char const*, lldb::StackFrameSP const&, lldb::WatchpointSP
>> const&)>) at ../tools/lldb/tools/driver/Driver.cpp:1223
>>
>> Second one (this happens after I do "file ls" and "r") :
>>
>> #0 lldb_private::SystemInitializerCommon::Initialize (this=0x1096850)
>> at ../tools/lldb/source/Initialization/SystemInitializerCommon.cpp:96
>> #1 0x00007f11ba252a3a in
>> lldb_private::SystemLifetimeManager::Initialize (this=<optimized out>,
>> initializer=..., plugin_callback=0x0) at
>> ../tools/lldb/source/Initialization/SystemLifetimeManager.cpp:43
>> #2 0x00000000004160fe in initialize () at
>> ../tools/lldb/tools/lldb-server/lldb-server.cpp:38
>> #3 0x0000000000415fde in main (argc=6, argv=0x7ffc6179b168) at
>> ../tools/lldb/tools/lldb-server/lldb-server.cpp:62
>>
>>
>>
>> On Tue, Jul 14, 2015 at 1:44 PM, İsmail Dönmez <ismail at donmez.ws> wrote:
>>> Hi,
>>>
>>> On Tue, Jul 14, 2015 at 1:41 PM, Pavel Labath <labath at google.com> wrote:
>>>> Hi,
>>>>
>>>> i've just tried a cmake build with BUILD_SHARED_LIBS=1 and it seems to
>>>> work for me. Could you share the exact command you use to build? Also,
>>>> are you using the latest version from svn?
>>>
>>> Yes this is the latest version from svn, but note that I build lldb
>>> together with llvm/clang and compiler-rt, exact command line is:
>>>
>>> cmake -G "Ninja" \
>>> -DCMAKE_BUILD_TYPE=RelWithDebInfo \
>>> -DBUILD_SHARED_LIBS=ON \
>>> -DLLVM_LIBDIR_SUFFIX=64 \
>>> -DLLVM_REQUIRES_RTTI=ON \
>>> -DLLVM_ENABLE_TIMESTAMPS=OFF \
>>> -DLLVM_ENABLE_ASSERTIONS=ON \
>>> -DLLVM_ENABLE_PIC=ON \
>>> -DLLVM_BINUTILS_INCDIR=/usr/include \
>>> -DLLVM_TARGETS_TO_BUILD=host \
>>> -DLLVM_ENABLE_FFI=ON \
>>> -DCLANG_DEFAULT_OPENMP_RUNTIME=libomp \
>>> -DLLVM_ENABLE_LIBCXX=ON \
>>> ..
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