[lldb-dev] [Bug 26978] New: LLDB stack overflow while dealing with symbols for a process on Linux

Greg Clayton via lldb-dev lldb-dev at lists.llvm.org
Thu Mar 17 14:19:44 PDT 2016 

Make stacks bigger when making threads on linux?

> On Mar 17, 2016, at 1:39 PM, Jeffrey Tan via lldb-dev <lldb-dev at lists.llvm.org> wrote:
> 
> Seems like the crashes happens because of abi::__cxa_demangle() for mangled symbol name " _ZNSt9_Any_data9_M_accessIPPZN5folly6fibers12FiberManager16runInMainContextIZN8facebook8memcache15CacheClientImplINS6_17CControllerCommonINS1_7dynamicEEEE11multiOpSyncINS6_11McOperationILi11EEESt6vect".
> 
> This is blocking us from releasing our C++ debugging support. Anyone know of a quick workaround I can fix it locally? Thanks!
> 
> On Thu, Mar 17, 2016 at 12:25 PM, via lldb-dev <lldb-dev at lists.llvm.org> wrote:
> Bug ID	26978
> Summary	LLDB stack overflow while dealing with symbols for a process on Linux           
> Product	lldb
> Version	3.8
> Hardware	PC
> OS	Linux
> Status	NEW
> Severity	release blocker
> Priority	P
> Component	All Bugs
> Assignee	lldb-dev at lists.llvm.org
> Reporter	jeffrey.fudan at gmail.com
> CC	llvm-bugs at lists.llvm.org
> Classification	Unclassified
> 
> While using lldb to attach a process in our company on Linux, lldb segment
> fault with a huge stack(more than 30K stack frames). I assume it crashes
> because of stack overflow. Let me know what additional information you needed(I
> have coredump):
> 
> #0  0x00007f28ce530819 in d_print_comp (dpi=0x7f28c2728c00, options=17,
> dc=0x7f28c2724b80) at cp-demangle.c:4286
> #1  0x00007f28ce5321e6 in d_print_comp (dpi=0x7f28c2728c00, options=17,
> dc=0x7f28c2724bb0) at cp-demangle.c:4324
> #2  0x00007f28ce5321e6 in d_print_comp (dpi=dpi at entry=0x7f28c2728c00,
> options=options at entry=17, dc=0x7f28c2724c10) at cp-demangle.c:4324
> #3  0x00007f28ce532010 in d_print_comp (dpi=0x7f28c2728c00, options=17,
> dc=0x7f28c2724c70) at cp-demangle.c:4489
> #4  0x00007f28ce5319c0 in d_print_comp (dpi=dpi at entry=0x7f28c2728c00,
> options=options at entry=17, dc=0x7f28c2724c88) at cp-demangle.c:4923
> #5  0x00007f28ce532056 in d_print_comp (dpi=0x7f28c2728c00, options=17,
> dc=0x7f28c2724ca0) at cp-demangle.c:4493
> #6  0x00007f28ce5321e6 in d_print_comp (dpi=dpi at entry=0x7f28c2728c00,
> options=options at entry=17, dc=0x7f28c2724cd0) at cp-demangle.c:4324
> #7  0x00007f28ce532010 in d_print_comp (dpi=0x7f28c2728c00, options=17,
> dc=0x7f28c2725030) at cp-demangle.c:4489
> #8  0x00007f28ce535353 in d_print_mod (dpi=dpi at entry=0x7f28c2728c00,
> options=options at entry=17, mod=<optimized out>) at cp-demangle.c:5539
> #9  0x00007f28ce535dbe in d_print_mod_list (dpi=dpi at entry=0x7f28c2728c00,
> options=options at entry=17, mods=mods at entry=0x7f28c1f2ba30,
> suffix=suffix at entry=0) at cp-demangle.c:5468
> #10 0x00007f28ce5366a1 in d_print_function_type (dpi=dpi at entry=0x7f28c2728c00,
> options=options at entry=17, mods=0x7f28c1f2ba30, dc=0x7f28c2725138) at
> cp-demangle.c:5609
> #11 0x00007f28ce53110c in d_print_comp (dpi=dpi at entry=0x7f28c2728c00,
> options=options at entry=17, dc=0x7f28c2725138) at cp-demangle.c:4808
> #12 0x00007f28ce530a01 in d_print_comp (dpi=0x7f28c2728c00, options=17,
> dc=0x7f28c2725150) at cp-demangle.c:4434
> #13 0x00007f28ce5321e6 in d_print_comp (dpi=dpi at entry=0x7f28c2728c00,
> options=options at entry=17, dc=0x7f28c27251b0) at cp-demangle.c:4324
> #14 0x00007f28ce5336b3 in d_print_comp (dpi=dpi at entry=0x7f28c2728c00,
> options=options at entry=17, dc=0x7f28c2725108) at cp-demangle.c:4529
> #15 0x00007f28ce534448 in d_print_comp (dpi=0x7f28c2728c00, options=<optimized
> out>, dc=0x7f28c2725270) at cp-demangle.c:4793
> #16 0x00007f28ce5319c0 in d_print_comp (dpi=dpi at entry=0x7f28c2728c00,
> options=options at entry=17, dc=0x7f28c2725288) at cp-demangle.c:4923
> #17 0x00007f28ce532056 in d_print_comp (dpi=0x7f28c2728c00, options=17,
> dc=0x7f28c27252a0) at cp-demangle.c:4493
> #18 0x00007f28ce5321e6 in d_print_comp (dpi=dpi at entry=0x7f28c2728c00,
> options=options at entry=17, dc=0x7f28c27252d0) at cp-demangle.c:4324
> #19 0x00007f28ce534448 in d_print_comp (dpi=dpi at entry=0x7f28c2728c00,
> options=options at entry=17, dc=0x7f28c2725318) at cp-demangle.c:4793
> #20 0x00007f28ce530a01 in d_print_comp (dpi=0x7f28c2728c00, options=17,
> dc=0x7f28c2725330) at cp-demangle.c:4434
> #21 0x00007f28ce5321e6 in d_print_comp (dpi=dpi at entry=0x7f28c2728c00,
> options=options at entry=17, dc=0x7f28c2725390) at cp-demangle.c:4324
> #22 0x00007f28ce53123b in d_print_comp (dpi=dpi at entry=0x7f28c2728c00,
> options=options at entry=17, dc=0x7f28c27253a8) at cp-demangle.c:4742
> #23 0x00007f28ce53123b in d_print_comp (dpi=dpi at entry=0x7f28c2728c00,
> options=options at entry=17, dc=0x7f28c27253c0) at cp-demangle.c:4742
> #24 0x00007f28ce5336b3 in d_print_comp (dpi=dpi at entry=0x7f28c2728c00,
> options=options at entry=17, dc=0x7f28c2725108) at cp-demangle.c:4529
> #25 0x00007f28ce53123b in d_print_comp (dpi=0x7f28c2728c00, options=17,
> dc=0x7f28c27252e8) at cp-demangle.c:4742
> #26 0x00007f28ce5319c0 in d_print_comp (dpi=dpi at entry=0x7f28c2728c00,
> options=options at entry=17, dc=0x7f28c2725300) at cp-demangle.c:4923
> #27 0x00007f28ce5366e1 in d_print_function_type (dpi=dpi at entry=0x7f28c2728c00,
> options=options at entry=17, mods=0x7f28c1f2cc70, dc=0x7f28c2725318) at
> cp-demangle.c:5617
> #28 0x00007f28ce53110c in d_print_comp (dpi=dpi at entry=0x7f28c2728c00,
> options=options at entry=17, dc=0x7f28c2725318) at cp-demangle.c:4808
> #29 0x00007f28ce530a01 in d_print_comp (dpi=0x7f28c2728c00, options=17,
> dc=0x7f28c2725330) at cp-demangle.c:4434
> ....
> 
> #31767 0x00007f28ce5336b3 in d_print_comp (dpi=dpi at entry=0x7f28c2728c00,
> options=options at entry=17, dc=0x7f28c2725108) at cp-demangle.c:4529
> #31768 0x00007f28ce53123b in d_print_comp (dpi=dpi at entry=0x7f28c2728c00,
> options=options at entry=17, dc=0x7f28c2725408) at cp-demangle.c:4742
> #31769 0x00007f28ce534448 in d_print_comp (dpi=dpi at entry=0x7f28c2728c00,
> options=options at entry=17, dc=0x7f28c2725450) at cp-demangle.c:4793
> #31770 0x00007f28ce530a01 in d_print_comp (dpi=dpi at entry=0x7f28c2728c00,
> options=options at entry=17, dc=dc at entry=0x7f28c2725468) at cp-demangle.c:4434
> #31771 0x00007f28ce536f53 in d_demangle_callback (options=17,
> opaque=0x7f28c2723cc0, callback=0x7f28ce52c820
> <d_growable_string_callback_adapter>, dc=0x7f28c2725468) at cp-demangle.c:4063
> #31772 0x00007f28ce536f53 in d_demangle_callback (mangled=<optimized out>,
>     mangled at entry=0x0, callback=callback at entry=0x7f28ce52c820
> <d_growable_string_callback_adapter>, opaque=opaque at entry=0x7f28c2728db0,
> options=17) at cp-demangle.c:5865
> #31773 0x00007f28ce53709f in __cxa_demangle (options=17, palc=<synthetic
> pointer>, mangled=0x0) at cp-demangle.c:5886
> 
> #31774 0x00007f28ce53709f in __cxa_demangle
> (mangled_name=mangled_name at entry=0x7f28ace3d460
> "_ZNSt9_Any_data9_M_accessIPPZN5folly6fibers12FiberManager16runInMainContextIZN8facebook8memcache15CacheClientImplINS6_17CControllerCommonINS1_7dynamicEEEE11multiOpSyncINS6_11McOperationILi11EEESt6vect"...,
> output_buffer=output_buffer at entry=0x0, length=length at entry=0x0,
> status=status at entry=0x0) at cp-demangle.c:5950
> #31775 0x00007f28d015dc57 in
> lldb_private::Mangled::GetDemangledName(lldb::LanguageType) const
> (this=this at entry=0x7f28c0d48310,
> language=language at entry=lldb::eLanguageTypeC_plus_plus)
>     at
> /home/engshare/third-party2/lldb/3.8.0.rc3/src/llvm/tools/lldb/source/Core/Mangled.cpp:316
> 
> #31776 0x00007f28d025bdca in lldb_private::Symtab::InitNameIndexes()
> (this=0x7f28ac1a8ff0) at
> /home/engshare/third-party2/lldb/3.8.0.rc3/src/llvm/tools/lldb/source/Symbol/Symtab.cpp:334
> #31777 0x00007f28d025d0b8 in
> lldb_private::Symtab::FindAllSymbolsWithNameAndType(lldb_private::ConstString
> const&, lldb::SymbolType, std::vector<unsigned int, std::allocator<unsigned
> int> >&) (this=this at entry=0x7f28ac1a8ff0, name=...,
> symbol_type=symbol_type at entry=lldb::eSymbolTypeAny, symbol_indexes=...) at
> /home/engshare/third-party2/lldb/3.8.0.rc3/src/llvm/tools/lldb/source/Symbol/Symtab.cpp:819
> 
> #31778 0x00007f28d0160ec2 in
> lldb_private::Module::FindSymbolsWithNameAndType(lldb_private::ConstString
> const&, lldb::SymbolType, lldb_private::SymbolContextList&)
> (this=0x7f28ac0605a0, name=...,
> symbol_type=symbol_type at entry=lldb::eSymbolTypeAny, sc_list=...) at
> /home/engshare/third-party2/lldb/3.8.0.rc3/src/llvm/tools/lldb/source/Core/Module.cpp:1432
> #31779 0x00007f28d016781d in
> lldb_private::ModuleList::FindSymbolsWithNameAndType(lldb_private::ConstString
> const&, lldb::SymbolType, lldb_private::SymbolContextList&, bool) const
> (this=this at entry=0x7f28c27294b0, name=...,
> symbol_type=symbol_type at entry=lldb::eSymbolTypeAny, sc_list=...,
> append=append at entry=false) at
> /home/engshare/third-party2/lldb/3.8.0.rc3/src/llvm/tools/lldb/source/Core/ModuleList.cpp:573
> #31780 0x00007f28d0514626 in
> JITLoaderGDB::GetSymbolAddress(lldb_private::ModuleList&,
> lldb_private::ConstString const&, lldb::SymbolType) const
> (this=this at entry=0x7f28ac042990, module_list=..., name=...,
> symbol_type=symbol_type at entry=lldb::eSymbolTypeAny) at
> /home/engshare/third-party2/lldb/3.8.0.rc3/src/llvm/tools/lldb/source/Plugins/JITLoader/GDB/JITLoaderGDB.cpp:500
> 
> #31781 0x00007f28d05164cb in
> JITLoaderGDB::SetJITBreakpoint(lldb_private::ModuleList&) (this=0x7f28ac042990,
> module_list=...)
>     at
> /home/engshare/third-party2/lldb/3.8.0.rc3/src/llvm/tools/lldb/source/Plugins/JITLoader/GDB/JITLoaderGDB.cpp:177
> 
> #31782 0x00007f28d030c910 in
> lldb_private::JITLoaderList::ModulesDidLoad(lldb_private::ModuleList&)
> (this=<optimized out>, module_list=...)
>     at
> /home/engshare/third-party2/lldb/3.8.0.rc3/src/llvm/tools/lldb/source/Target/JITLoaderList.cpp:76
> #31783 0x00007f28d02a90f8 in
> lldb_private::Process::ModulesDidLoad(lldb_private::ModuleList&)
> (this=this at entry=0x894160, module_list=...)
>     at
> /home/engshare/third-party2/lldb/3.8.0.rc3/src/llvm/tools/lldb/source/Target/Process.cpp:6370
> ---Type <return> to continue, or q <return> to quit---
> #31784 0x00007f28d03f3091 in
> lldb_private::process_gdb_remote::ProcessGDBRemote::ModulesDidLoad(lldb_private::ModuleList&)
> (this=0x894160, module_list=...)
>     at
> /home/engshare/third-party2/lldb/3.8.0.rc3/src/llvm/tools/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp:4927
> #31785 0x00007f28d02d3131 in
> lldb_private::Target::ModulesDidLoad(lldb_private::ModuleList&) (this=0x88f8b0,
> module_list=...)
>     at
> /home/engshare/third-party2/lldb/3.8.0.rc3/src/llvm/tools/lldb/source/Target/Target.cpp:1400
> #31786 0x00007f28d02dcb58 in
> lldb_private::Target::ModuleAdded(lldb_private::ModuleList const&,
> std::shared_ptr<lldb_private::Module> const&) (this=0x88f8b0, module_list=...,
> module_sp=...)
>     at
> /home/engshare/third-party2/lldb/3.8.0.rc3/src/llvm/tools/lldb/source/Target/Target.cpp:1364
> #31787 0x00007f28d0168f28 in
> lldb_private::ModuleList::AppendImpl(std::shared_ptr<lldb_private::Module>
> const&, bool) (this=0x88fbb0, module_sp=...,
> use_notifier=use_notifier at entry=true)
>     at
> /home/engshare/third-party2/lldb/3.8.0.rc3/src/llvm/tools/lldb/source/Core/ModuleList.cpp:110
> #31788 0x00007f28d0168f6a in
> lldb_private::ModuleList::Append(std::shared_ptr<lldb_private::Module> const&)
> (this=<optimized out>, module_sp=...)
>     at
> /home/engshare/third-party2/lldb/3.8.0.rc3/src/llvm/tools/lldb/source/Core/ModuleList.cpp:117
> #31789 0x00007f28d02d1def in
> lldb_private::Target::GetSharedModule(lldb_private::ModuleSpec const&,
> lldb_private::Error*) (this=this at entry=0x88f8b0, module_spec=...,
> error_ptr=error_ptr at entry=0x0)
>     at
> /home/engshare/third-party2/lldb/3.8.0.rc3/src/llvm/tools/lldb/source/Target/Target.cpp:1924
> #31790 0x00007f28d0620b48 in
> lldb_private::DynamicLoader::LoadModuleAtAddress(lldb_private::FileSpec const&,
> unsigned long, unsigned long, bool) (this=<optimized out>, file=...,
> link_map_addr=139710961516544, base_addr=139710941827072,
> base_addr_is_offset=<optimized out>) at
> /home/engshare/third-party2/lldb/3.8.0.rc3/src/llvm/tools/lldb/source/Core/DynamicLoader.cpp:192
> #31791 0x00007f28d038764a in DynamicLoaderPOSIXDYLD::LoadAllCurrentModules()
> (this=0x7f28ac038570)
>     at
> /home/engshare/third-party2/lldb/3.8.0.rc3/src/llvm/tools/lldb/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.cpp:521
> #31792 0x00007f28d03898f0 in DynamicLoaderPOSIXDYLD::DidAttach()
> (this=0x7f28ac038570)
>     at
> /home/engshare/third-party2/lldb/3.8.0.rc3/src/llvm/tools/lldb/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.cpp:181
> #31793 0x00007f28d02a646c in lldb_private::Process::CompleteAttach()
> (this=0x894160) at
> /home/engshare/third-party2/lldb/3.8.0.rc3/src/llvm/tools/lldb/source/Target/Process.cpp:3443
> #31794 0x00007f28d02a7236 in
> lldb_private::Process::AttachCompletionHandler::PerformAction(std::shared_ptr<lldb_private::Event>&)
> (this=0x8b8920, event_sp=...)
>     at
> /home/engshare/third-party2/lldb/3.8.0.rc3/src/llvm/tools/lldb/source/Target/Process.cpp:3194
> #31795 0x00007f28d02af98c in
> lldb_private::Process::HandlePrivateEvent(std::shared_ptr<lldb_private::Event>&)
> (this=this at entry=0x894160, event_sp=...)
>     at
> /home/engshare/third-party2/lldb/3.8.0.rc3/src/llvm/tools/lldb/source/Target/Process.cpp:4184
> #31796 0x00007f28d02b09bd in lldb_private::Process::RunPrivateStateThread(bool)
> (this=0x894160, is_secondary_thread=<optimized out>)
>     at
> /home/engshare/third-party2/lldb/3.8.0.rc3/src/llvm/tools/lldb/source/Target/Process.cpp:4429
> #31797 0x00007f28d0108421 in
> lldb_private::HostNativeThreadBase::ThreadCreateTrampoline(void*)
> (arg=0x8b8900)
>     at
> /home/engshare/third-party2/lldb/3.8.0.rc3/src/llvm/tools/lldb/source/Host/common/HostNativeThreadBase.cpp:81
> #31798 0x00007f28cea24aa1 in start_thread () at /lib64/libpthread.so.0
> #31799 0x00007f28cdd8693d in clone () at /lib64/libc.so.6
> 
> 
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