test/run failures on OSS Release build on ubuntu 14.04

[rrh]

I did a Release build (the first time in a long time) of near master head on Ubuntu 14.04 and got 4 segfaults when running test/run slow. I don't get these segfaults on another Ubuntu 14.04 machine, ostensibly "the same".

test/run --threads 4 'test/slow/array/large-packed-array.php' 'test/slow/collection_classes/frozen_set/cow_large.php' 'test/slow/collection_classes/frozen_vector/cow_large.php' 'test/slow/memory/memory_interval.php'

Here are some backtraces:gdb) where

#0  0x0000000002c02749 in HPHP::PackedArray::Release(HPHP::ArrayData*) ()
#1  0x0000000008c00487 in ?? ()
#2  0x0000000002bfbed9 in enterTCHelper ()
#3  0x00000000017934b6 in HPHP::jit::x64::BackEnd::enterTCHelper(unsigned char*, HPHP::ActRec*) ()
#4  0x00000000014c7e3b in HPHP::jit::MCGenerator::enterTC(unsigned char*, HPHP::ActRec*) ()
#5  0x000000000130d199 in HPHP::enterVM(HPHP::ActRec*, HPHP::StackArgsState, HPHP::Resumable*, HPHP::ObjectData*) ()
#6  0x0000000002bfb63f in HPHP::ExecutionContext::invokeFunc(HPHP::TypedValue*, HPHP::Func const*, HPHP::Variant const&, HPHP::ObjectData*, HPHP::Class*, HPHP::VarEnv*, HPHP::StringData*, HPHP::ExecutionContext::InvokeFlags) ()
#7  0x0000000002c4ad79 in HPHP::ExecutionContext::invokeUnit(HPHP::TypedValue*, HPHP::Unit const*) ()
#8  0x0000000000f9985f in HPHP::include_impl_invoke(HPHP::String const&, bool, char const*) ()
#9  0x0000000000e80892 in HPHP::hphp_invoke(HPHP::ExecutionContext*, std::string const&, bool, HPHP::Array const&, HPHP::VRefParamValue const&, std::string const&, std::string const&, bool&, std::string&, bool, bool, bool) ()
#10 0x0000000000e81173 in HPHP::hphp_invoke_simple(std::string const&, bool) ()
#11 0x0000000000e95a0e in HPHP::execute_program_impl(int, char**) ()
#12 0x0000000000e963ff in HPHP::execute_program(int, char**) ()
#13 0x0000000000d9b08c in main ()

(gdb) where
#0  0x0000000002bed577 in HPHP::MixedArray::Release(HPHP::ArrayData*) ()
#1  0x000000000180ca9a in HPHP::BaseSet::add(long) ()
#2  0x000000000181b128 in HPHP::collectionAppend(HPHP::ObjectData*, HPHP::TypedValue*) ()
#3  0x0000000002c0baa6 in HPHP::jit::setNewElem(HPHP::TypedValue*, HPHP::TypedValue) ()
#4  0x00000000048000ef in ?? ()
#5  0x0000000002bfbed9 in enterTCHelper ()
#6  0x00000000017934b6 in HPHP::jit::x64::BackEnd::enterTCHelper(unsigned char*, HPHP::ActRec*) ()
#7  0x00000000014c7e3b in HPHP::jit::MCGenerator::enterTC(unsigned char*, HPHP::ActRec*) ()
#8  0x000000000130d199 in HPHP::enterVM(HPHP::ActRec*, HPHP::StackArgsState, HPHP::Resumable*, HPHP::ObjectData*) ()
#9  0x0000000002bfb63f in HPHP::ExecutionContext::invokeFunc(HPHP::TypedValue*, HPHP::Func const*, HPHP::Variant const&, HPHP::ObjectData*, HPHP::Class*, HPHP::VarEnv*, HPHP::StringData*, HPHP::ExecutionContext::InvokeFlags) ()
#10 0x0000000002c4ad79 in HPHP::ExecutionContext::invokeUnit(HPHP::TypedValue*, HPHP::Unit const*) ()
#11 0x0000000000f9985f in HPHP::include_impl_invoke(HPHP::String const&, bool, char const*) ()
#12 0x0000000000e80892 in HPHP::hphp_invoke(HPHP::ExecutionContext*, std::string const&, bool, HPHP::Array const&, HPHP::VRefParamValue const&, std::string const&, std::string const&, bool&, std::string&, bool, bool, bool) ()
#13 0x0000000000e81173 in HPHP::hphp_invoke_simple(std::string const&, bool) ()
#14 0x0000000000e95a0e in HPHP::execute_program_impl(int, char**) ()
#15 0x0000000000e963ff in HPHP::execute_program(int, char**) ()
#16 0x0000000000d9b08c in main ()
(gdb) where
#0  0x0000000002c02749 in HPHP::PackedArray::Release(HPHP::ArrayData*) ()
#1  0x000000000181af91 in HPHP::collectionAppend(HPHP::ObjectData*, HPHP::TypedValue*) ()
#2  0x0000000002c0baa6 in HPHP::jit::setNewElem(HPHP::TypedValue*, HPHP::TypedValue) ()
#3  0x00000000048000e6 in ?? ()
#4  0x0000000002bfbed9 in enterTCHelper ()
#5  0x00000000017934b6 in HPHP::jit::x64::BackEnd::enterTCHelper(unsigned char*, HPHP::ActRec*) ()
#6  0x00000000014c7e3b in HPHP::jit::MCGenerator::enterTC(unsigned char*, HPHP::ActRec*) ()
#7  0x000000000130d199 in HPHP::enterVM(HPHP::ActRec*, HPHP::StackArgsState, HPHP::Resumable*, HPHP::ObjectData*) ()
#8  0x0000000002bfb63f in HPHP::ExecutionContext::invokeFunc(HPHP::TypedValue*, HPHP::Func const*, HPHP::Variant const&, HPHP::ObjectData*, HPHP::Class*, HPHP::VarEnv*, HPHP::StringData*, HPHP::ExecutionContext::InvokeFlags) ()
#9  0x0000000002c4ad79 in HPHP::ExecutionContext::invokeUnit(HPHP::TypedValue*, HPHP::Unit const*) ()
#10 0x0000000000f9985f in HPHP::include_impl_invoke(HPHP::String const&, bool, char const*) ()
#11 0x0000000000e80892 in HPHP::hphp_invoke(HPHP::ExecutionContext*, std::string const&, bool, HPHP::Array const&, HPHP::VRefParamValue const&, std::string const&, std::string const&, bool&, std::string&, bool, bool, bool) ()
#12 0x0000000000e81173 in HPHP::hphp_invoke_simple(std::string const&, bool) ()
#13 0x0000000000e95a0e in HPHP::execute_program_impl(int, char**) ()
#14 0x0000000000e963ff in HPHP::execute_program(int, char**) ()
#15 0x0000000000d9b08c in main ()

[rrh]

I forgot to be specific. I'm at
commit bdcf99e
just because that was head when I ran this round of experiments.

[rrh]

Has anybody had a chance to look at this?

[Orvid]

This issue has been waiting for more info for more than 2 weeks. Closing for now, feel free to re-open it if you can provide more info.

https://github.com/facebook/hhvm/wiki/Human-Timeouts