llvm dev - May 2017 - lib/CodeGen/AsmPrinter/DwarfDebug.h:131: void llvm::DbgVariable::addMMIEntry(const llvm::DbgVariable&): Assertion `V.Var == Var && "conflicting variable"' failed.

Thanks!

On Mon, May 8, 2017 at 6:25 PM, Reid Kleckner <rnk at google.com> wrote:
> I give it 99% odds it was r302483. Let's revert and debug it tomorrow.
>
> On Mon, May 8, 2017 at 6:20 PM, Kostya Serebryany via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>
>> David, Dean, all,
>>
>> The bots got red today with assertion failures in
>> llvm::DbgVariable::addMMIEntry:
>> http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux/
>> builds/1816/steps/check-msan%20in%20gcc%20build/logs/stdio
>> I did not find the offender yet. Any ideas?
>>
>> clang-5.0:
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h:131:
void llvm::DbgVariable::addMMIEntry(const llvm::DbgVariable&): Assertion
`V.Var == Var && "conflicting variable"' failed.
>> clang-5.0:
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h:131:
void llvm::DbgVariable::addMMIEntry(const llvm::DbgVariable&): Assertion
`V.Var == Var && "conflicting variable"' failed.
>> #0 0x0000000002000bea
llvm::sys::PrintStackTrace(llvm::raw_ostream&)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/Support/Unix/Signals.inc:402:0
>> #1 0x0000000001ffea1e llvm::sys::RunSignalHandlers()
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/Support/Signals.cpp:44:0
>> #2 0x0000000001ffeb92 SignalHandler(int)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/Support/Unix/Signals.inc:242:0
>> #3 0x00007fa903bee390 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x11390)
>> #4 0x00007fa902b7b428 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x35428)
>> #5 0x00007fa902b7d02a abort (/lib/x86_64-linux-gnu/libc.so.6+0x3702a)
>> #6 0x00007fa902b73bd7 (/lib/x86_64-linux-gnu/libc.so.6+0x2dbd7)
>> #7 0x00007fa902b73c82 (/lib/x86_64-linux-gnu/libc.so.6+0x2dc82)
>> #8 0x0000000002601cd4 llvm::DbgVariable::addMMIEntry(llvm::DbgVariable
const&)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h:130:0
>> #9 0x0000000002601cd4
llvm::DwarfFile::addScopeVariable(llvm::LexicalScope*, llvm::DbgVariable*)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfFile.cpp:104:0
>> #10 0x00000000025f5a29
llvm::DwarfDebug::createAbstractVariable(llvm::DILocalVariable const*,
llvm::LexicalScope*)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp:746:0#11
0x00000000025f5cf4
llvm::DwarfDebug::ensureAbstractVariableIsCreatedIfScoped(std::pair<llvm::DILocalVariable
const*, llvm::DILocation const*>, llvm::MDNode const*)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp:767:0
>> #12 0x00000000025f5d38
llvm::DwarfDebug::createConcreteVariable(llvm::LexicalScope&,
std::pair<llvm::DILocalVariable const*, llvm::DILocation const*>)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp:961:0
>> #13 0x00000000025f901c
llvm::DwarfDebug::collectVariableInfo(llvm::DwarfCompileUnit&,
llvm::DISubprogram const*, llvm::DenseSet<std::pair<llvm::DILocalVariable
const*, llvm::DILocation const*>,
llvm::DenseMapInfo<std::pair<llvm::DILocalVariable const*,
llvm::DILocation const*> > >&)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp:1005:0
>> #14 0x00000000025f9ae8
llvm::DwarfDebug::endFunctionImpl(llvm::MachineFunction const*)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp:1208:0
>> #15 0x000000000262f75a
llvm::DebugHandlerBase::endFunction(llvm::MachineFunction const*)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp:256:0
>>
>>
>> _______________________________________________
>> LLVM Developers mailing list
>> llvm-dev at lists.llvm.org
>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>
>>
>
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I take it back, that build doesn't have that revision. It could be r302461,
which is from the first failing build:
http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux/builds/1815

That revision is much safer, though. I am rebuilding with debug info
enabled. First I ran check-msan without RelWithDebInfo, and of course I
didn't reproduce the problem.

On Mon, May 8, 2017 at 6:28 PM, Kostya Serebryany <kcc at google.com>
wrote:
> Thanks!
>
> On Mon, May 8, 2017 at 6:25 PM, Reid Kleckner <rnk at google.com>
wrote:
>
>> I give it 99% odds it was r302483. Let's revert and debug it
tomorrow.
>>
>> On Mon, May 8, 2017 at 6:20 PM, Kostya Serebryany via llvm-dev <
>> llvm-dev at lists.llvm.org> wrote:
>>
>>> David, Dean, all,
>>>
>>> The bots got red today with assertion failures in
>>> llvm::DbgVariable::addMMIEntry:
>>> http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux/bui
>>> lds/1816/steps/check-msan%20in%20gcc%20build/logs/stdio
>>> I did not find the offender yet. Any ideas?
>>>
>>> clang-5.0:
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h:131:
void llvm::DbgVariable::addMMIEntry(const llvm::DbgVariable&): Assertion
`V.Var == Var && "conflicting variable"' failed.
>>> clang-5.0:
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h:131:
void llvm::DbgVariable::addMMIEntry(const llvm::DbgVariable&): Assertion
`V.Var == Var && "conflicting variable"' failed.
>>> #0 0x0000000002000bea
llvm::sys::PrintStackTrace(llvm::raw_ostream&)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/Support/Unix/Signals.inc:402:0
>>> #1 0x0000000001ffea1e llvm::sys::RunSignalHandlers()
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/Support/Signals.cpp:44:0
>>> #2 0x0000000001ffeb92 SignalHandler(int)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/Support/Unix/Signals.inc:242:0
>>> #3 0x00007fa903bee390 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x11390)
>>> #4 0x00007fa902b7b428 gsignal
(/lib/x86_64-linux-gnu/libc.so.6+0x35428)
>>> #5 0x00007fa902b7d02a abort
(/lib/x86_64-linux-gnu/libc.so.6+0x3702a)
>>> #6 0x00007fa902b73bd7 (/lib/x86_64-linux-gnu/libc.so.6+0x2dbd7)
>>> #7 0x00007fa902b73c82 (/lib/x86_64-linux-gnu/libc.so.6+0x2dc82)
>>> #8 0x0000000002601cd4
llvm::DbgVariable::addMMIEntry(llvm::DbgVariable const&)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h:130:0
>>> #9 0x0000000002601cd4
llvm::DwarfFile::addScopeVariable(llvm::LexicalScope*, llvm::DbgVariable*)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfFile.cpp:104:0
>>> #10 0x00000000025f5a29
llvm::DwarfDebug::createAbstractVariable(llvm::DILocalVariable const*,
llvm::LexicalScope*)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp:746:0#11
0x00000000025f5cf4
llvm::DwarfDebug::ensureAbstractVariableIsCreatedIfScoped(std::pair<llvm::DILocalVariable
const*, llvm::DILocation const*>, llvm::MDNode const*)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp:767:0
>>> #12 0x00000000025f5d38
llvm::DwarfDebug::createConcreteVariable(llvm::LexicalScope&,
std::pair<llvm::DILocalVariable const*, llvm::DILocation const*>)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp:961:0
>>> #13 0x00000000025f901c
llvm::DwarfDebug::collectVariableInfo(llvm::DwarfCompileUnit&,
llvm::DISubprogram const*, llvm::DenseSet<std::pair<llvm::DILocalVariable
const*, llvm::DILocation const*>,
llvm::DenseMapInfo<std::pair<llvm::DILocalVariable const*,
llvm::DILocation const*> > >&)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp:1005:0
>>> #14 0x00000000025f9ae8
llvm::DwarfDebug::endFunctionImpl(llvm::MachineFunction const*)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp:1208:0
>>> #15 0x000000000262f75a
llvm::DebugHandlerBase::endFunction(llvm::MachineFunction const*)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp:256:0
>>>
>>>
>>> _______________________________________________
>>> LLVM Developers mailing list
>>> llvm-dev at lists.llvm.org
>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>>
>>>
>>
>
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This wasn't either of my changes, it was actually Adrian's r302469,
which
Hans reverted this morning. See http://llvm.org/PR32977

On Mon, May 8, 2017 at 6:56 PM, Reid Kleckner <rnk at google.com> wrote:
> I take it back, that build doesn't have that revision. It could be
r302461,
> which is from the first failing build: http://lab.llvm.org:
> 8011/builders/sanitizer-x86_64-linux/builds/1815
>
> That revision is much safer, though. I am rebuilding with debug info
> enabled. First I ran check-msan without RelWithDebInfo, and of course I
> didn't reproduce the problem.
>
> On Mon, May 8, 2017 at 6:28 PM, Kostya Serebryany <kcc at google.com>
wrote:
>
>> Thanks!
>>
>> On Mon, May 8, 2017 at 6:25 PM, Reid Kleckner <rnk at google.com>
wrote:
>>
>>> I give it 99% odds it was r302483. Let's revert and debug it
tomorrow.
>>>
>>> On Mon, May 8, 2017 at 6:20 PM, Kostya Serebryany via llvm-dev <
>>> llvm-dev at lists.llvm.org> wrote:
>>>
>>>> David, Dean, all,
>>>>
>>>> The bots got red today with assertion failures in
>>>> llvm::DbgVariable::addMMIEntry:
>>>> http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux/bui
>>>> lds/1816/steps/check-msan%20in%20gcc%20build/logs/stdio
>>>> I did not find the offender yet. Any ideas?
>>>>
>>>> clang-5.0:
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h:131:
void llvm::DbgVariable::addMMIEntry(const llvm::DbgVariable&): Assertion
`V.Var == Var && "conflicting variable"' failed.
>>>> clang-5.0:
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h:131:
void llvm::DbgVariable::addMMIEntry(const llvm::DbgVariable&): Assertion
`V.Var == Var && "conflicting variable"' failed.
>>>> #0 0x0000000002000bea
llvm::sys::PrintStackTrace(llvm::raw_ostream&)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/Support/Unix/Signals.inc:402:0
>>>> #1 0x0000000001ffea1e llvm::sys::RunSignalHandlers()
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/Support/Signals.cpp:44:0
>>>> #2 0x0000000001ffeb92 SignalHandler(int)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/Support/Unix/Signals.inc:242:0
>>>> #3 0x00007fa903bee390 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x11390)
>>>> #4 0x00007fa902b7b428 gsignal
(/lib/x86_64-linux-gnu/libc.so.6+0x35428)
>>>> #5 0x00007fa902b7d02a abort
(/lib/x86_64-linux-gnu/libc.so.6+0x3702a)
>>>> #6 0x00007fa902b73bd7 (/lib/x86_64-linux-gnu/libc.so.6+0x2dbd7)
>>>> #7 0x00007fa902b73c82 (/lib/x86_64-linux-gnu/libc.so.6+0x2dc82)
>>>> #8 0x0000000002601cd4
llvm::DbgVariable::addMMIEntry(llvm::DbgVariable const&)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h:130:0
>>>> #9 0x0000000002601cd4
llvm::DwarfFile::addScopeVariable(llvm::LexicalScope*, llvm::DbgVariable*)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfFile.cpp:104:0
>>>> #10 0x00000000025f5a29
llvm::DwarfDebug::createAbstractVariable(llvm::DILocalVariable const*,
llvm::LexicalScope*)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp:746:0#11
0x00000000025f5cf4
llvm::DwarfDebug::ensureAbstractVariableIsCreatedIfScoped(std::pair<llvm::DILocalVariable
const*, llvm::DILocation const*>, llvm::MDNode const*)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp:767:0
>>>> #12 0x00000000025f5d38
llvm::DwarfDebug::createConcreteVariable(llvm::LexicalScope&,
std::pair<llvm::DILocalVariable const*, llvm::DILocation const*>)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp:961:0
>>>> #13 0x00000000025f901c
llvm::DwarfDebug::collectVariableInfo(llvm::DwarfCompileUnit&,
llvm::DISubprogram const*, llvm::DenseSet<std::pair<llvm::DILocalVariable
const*, llvm::DILocation const*>,
llvm::DenseMapInfo<std::pair<llvm::DILocalVariable const*,
llvm::DILocation const*> > >&)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp:1005:0
>>>> #14 0x00000000025f9ae8
llvm::DwarfDebug::endFunctionImpl(llvm::MachineFunction const*)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp:1208:0
>>>> #15 0x000000000262f75a
llvm::DebugHandlerBase::endFunction(llvm::MachineFunction const*)
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp:256:0
>>>>
>>>>
>>>> _______________________________________________
>>>> LLVM Developers mailing list
>>>> llvm-dev at lists.llvm.org
>>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>>>
>>>>
>>>
>>
>
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