https://llvm.org/bugs/show_bug.cgi?id=31464
Bug ID: 31464
Summary: lldb 3.9 no longer opens Breakpad generated dumps
Product: lldb
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: All Bugs
Assignee: lldb-...@lists.llvm.org
Reporter: rd...@microsoft.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
Created attachment 17780
--> https://llvm.org/bugs/attachment.cgi?id=17780&action=edit
Zip file containing a core file generated from breakpad
• Opens with all versions of gdb
• Opens with lldb 3.7
• Fails to open with lldb 3.9
#0 0x00007ffff4e40120 in lldb_private::ArchSpec::GetMachine() const () from
/home/rdorr/eugene/llvm-3.9-Release/lib/liblldb.so.3.9.1 - rdi is 0x8 and
can’t be dereferenced
#1 0x00007ffff53a71bf in
RegisterContextPOSIX_x86::RegisterContextPOSIX_x86(lldb_private::Thread&,
unsigned int, lldb_private::RegisterInfoInterface*) ()
from /home/rdorr/eugene/llvm-3.9-Release/lib/liblldb.so.3.9.1
#2 0x00007ffff52695f4 in
RegisterContextCorePOSIX_x86_64::RegisterContextCorePOSIX_x86_64(lldb_private::Thread&,
lldb_private::RegisterInfoInterface*, lldb_private::DataExtractor const&,
lldb_private::DataExtractor const&) () from
/home/rdorr/eugene/llvm-3.9-Release/lib/liblldb.so.3.9.1
#3 0x00007ffff526775f in
ThreadElfCore::CreateRegisterContextForFrame(lldb_private::StackFrame*) () from
/home/rdorr/eugene/llvm-3.9-Release/lib/liblldb.so.3.9.1
#4 0x00007ffff52672c5 in ThreadElfCore::GetRegisterContext() [clone
.localalias.37] () from
/home/rdorr/eugene/llvm-3.9-Release/lib/liblldb.so.3.9.1
#5 0x00007ffff5010dd9 in lldb_private::Thread::SetupForResume() () from
/home/rdorr/eugene/llvm-3.9-Release/lib/liblldb.so.3.9.1
#6 0x00007ffff501653c in lldb_private::ThreadList::WillResume() () from
/home/rdorr/eugene/llvm-3.9-Release/lib/liblldb.so.3.9.1
#7 0x00007ffff4fd0f4f in lldb_private::Process::PrivateResume() () from
/home/rdorr/eugene/llvm-3.9-Release/lib/liblldb.so.3.9.1
#8 0x00007ffff4fd174f in
lldb_private::Process::ProcessEventData::DoOnRemoval(lldb_private::Event*) ()
from /home/rdorr/eugene/llvm-3.9-Release/lib/liblldb.so.3.9.1
#9 0x00007ffff4e86209 in
lldb_private::Listener::FindNextEventInternal(lldb_private::Mutex::Locker&,
lldb_private::Broadcaster*, lldb_private::ConstString const*, unsigned int,
unsigned int, std::shared_ptr<lldb_private::Event>&, bool) () from
/home/rdorr/eugene/llvm-3.9-Release/lib/liblldb.so.3.9.1
#10 0x00007ffff4e86951 in
lldb_private::Listener::WaitForEventsInternal(lldb_private::TimeValue const*,
lldb_private::Broadcaster*, lldb_private::ConstString const*, unsigned int,
unsigned int, std::shared_ptr<lldb_private::Event>&) () from
/home/rdorr/eugene/llvm-3.9-Release/lib/liblldb.so.3.9.1
#11 0x00007ffff4e86a44 in
lldb_private::Listener::WaitForEvent(lldb_private::TimeValue const*,
std::shared_ptr<lldb_private::Event>&) ()
from /home/rdorr/eugene/llvm-3.9-Release/lib/liblldb.so.3.9.1
#12 0x00007ffff4fd0d17 in lldb_private::Process::LoadCore() () from
/home/rdorr/eugene/llvm-3.9-Release/lib/liblldb.so.3.9.1
#13 0x00007ffff3f0ccdf in lldb::SBTarget::LoadCore(char const*) () from
/home/rdorr/eugene/llvm-3.9-Release/lib/liblldb.so.3.9.1
#14 0x0000000000418864 in LldbHandler::LoadCore (this=0x7fffffffca88,
target=0x7fffffffe7ad "/home/rdorr/Source/mspal/Hosts/Linux/output/bin/palrun",
core=0x69f6f0 "/home/rdorr/Temp/test.core", libPath=0x7fffffffe061 "") at
debugger/LldbHandler.cpp:366
#15 0x00000000004687cd in LiveUserDebugServices::LoadCore (this=0x7fffffffca48,
target=0x7fffffffe7ad "/home/rdorr/Source/mspal/Hosts/Linux/output/bin/palrun",
core=0x69f6f0 "/home/rdorr/Temp/test.core", libPath=0x7fffffffe061 "") at
main/dbgsvc.cpp:143
#16 0x000000000046ce40 in main (argc=4, argv=0x7fffffffe518) at
main/main.cpp:313
• Using readelf, I can see the PR_STATUS for the thread in question and has
register and other information.
• Opening in gdb I can symbolize the stacks and do other operations.
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