This change became necessary as we observed weird fail-client SIGSEGV
crashes with both Bochs and Gem5 backends and different experiments.
Some Fail* components are instantiated statically: the
SimulatorController instance "simulator", containing the
ListenerManager and the CoroutineManager, and the active
ExperimentFlow subclass(es)
(experiments/instantiate-experiment*.ah.in). The experiment(s) is
registered as an active flow in the CoroutineManager at startup.
As plugins (which are ExperimentFlows themselves) are often created on
an experiment's stack, ExperimentFlows deregister themselves on
destruction (e.g., when leaving the plugin variable's scope). The
core problem is, that the creation and destruction order of statically
instantiated objects depends on the link order; if the experiment is
destroyed after the CoroutineManager, its automatic self-deregistering
feature talks to the smoking ruins of the latter.
This change removes all static instantiations of ExperimentFlow and
replaces them with constructions on the heap. Additionally it makes
sure that the CoroutineManager recognizes that a shutdown is in
progress, and refrains from touching potentially already destroyed
data structures when a (mistakenly globally instantiated)
ExperimentFlow deregisters in this case.
Change-Id: I8a7d42fb141222cd2cce6040ab1a01f9de61be24
Contemporary AspectC++ versions can deal with the LLVM headers very
well, and #ifdef __puma stuff in Fail* headers results in
unmaintainable #ifdef __puma blocks in other parts of Fail* (e.g., the
trace importer).
Make sure you're using a 64-bit ac++ when living in a 64-bit userland
(the 32-bit version doesn't know about __int128), and be aware that
AspectC++ r325 introduced a regression that has not been fixed yet.
Change-Id: I5bb759b08995a74b020d44a2b40e9d7a6e18111c
This change adapts the gem5 backend to the Register class interface change
in commit 52723a8. The necessary modifications suggested adding the "misc"
registers from gem5, too.
Change-Id: I32561c3fc905b9cd396e32ce80c791c01d5682fb
This change introduces a CMake-style FindMySQL.cmake properly looking for
libmysqlclient_r with mysql_config. This also fixes linking on some
machines.
Change-Id: Ifdbfdc3c7440dead37a8b63aaa86732d636aa0e2
* L4SYS_FUNC_{ENTRY,EXIT} now determines the range upon
which an experiment is run. These instructions produce the
output that is relevant for the experiment.
* L4SYS_FILTER_{ENTRY,EXIT} determine a subset of the
above instructions. FI experiments are performed on this
subset (between first occurrence of FILTER_ENTRY and first
occurrence of FILTER_EXIT inclusively).
Change-Id: I37d2189d8256b6b707a0a33984f2b2656071d983
The extended trace register list is needed in multiple locations; the CPU
class is the logical module to contain this information.
Increased number of x86 registers to be traced; we can remove those
that prove unusable for fault-space pruning later on.
Change-Id: Ic46ecdbc55167a6d92872c190317fc0d1a3ad92d
This allows a register to be a member of multiple UniformRegisterSets.
Needed to architecture-specifically store, e.g., a list of registers to
record in traces.
Change-Id: Ia5d20768540efe252a84df967d43e569f107da3a
Add a new instruction filter that allows filtering a list of
ranges read from a file. This allows us to specify multiple
ranges, e.g., to leave out instructions or to focus on multiple
functions
Change-Id: Iba13cda00d0a73edaef270b3cd9100afe3e4668b
Change the aspect weaver project path to all source paths (src, simulators,
debuggers, tools) and the <build>/src path.
Without this change "external" builds do work but do not weave in any
experiments. This change also allows multiple build directories within the
project root, as the weaver will no longer use aspects from all builds.
When further source directories are added to the project root, these
definitions will need to be updated.
Change-Id: If3d3d9fe61427fcba8b815171c8acdcdeb06cb69
Several database implementations, including, e.g., MySQL and PostgreSQL,
allow multiple rows to be INSERTed at once. At least for MySQL this
improves INSERT speed significantly.
Change-Id: Ic223f7915053f30b0cb00c567310f3e780c9fa59
Database::insert_id() retrieves the auto-generated ID from the last INSERT
or UPDATE on a table containing an AUTO_INCREMENT column.
Change-Id: I6ec94d1820bb7e77bd37df33145caa93016fd328
The SConscript in src/core/sal/gem5 is now generated via CMake
(SConscript.in). No more hardcoded relative paths -> Fail* build
folder can now be anywhere. Experiment and Plugin libraries are now
set automagically (using ${EXPERIMENTS_ACTIVATED} /
${PLUGINS_ACTIVATED})
Generated SConscript now resides in binary dir.
Change-Id: I1bf2e17c83c95ffdcf6801c02481064fcb63bfb0
In former versions, the aforementioned image was 'required' to run
gem5 although it wasn't actually used at all. With the new python
script fail_fs.py, it suffices to start gem5 on a target foo.elf by
simply typing $ ../scripts/run-gem5.sh path/to/target/foo.elf
Change-Id: I7f48460e50d48d55fe22f2381e2ae8aec8510233
libmysqlclient-dev (or libmariadbclient-dev) is needed to build Fail*.
A running MySQL/MariaDB server to talk to is needed for the
fault-space pruning tools and the DatabaseCampaign, too, but that's a
runtime dependency.
Change-Id: I1f7fbdaf20b49370039e8d27a07a8785e0f052b5
* L4SYS_NUMINSTR counts the instructions that were selected for
injection and is used by the campaign server to generate experiments
* L4SYS_TOTINSTR counts the total number of instructions executed.
It is used by the experiment to determine the timeout value.
Change-Id: Ibf37aea2a1f5ad5afad2b1232ce22fe070b08490
* mention how to obtain an L4Re setup
* describe finding the address space identifier in more detail
Change-Id: If56bfa255d498106920f39a7380b97306a8731c8
This commit introduces a virtual dtor in the ArmCPUState class to
prevent the compiler from producing the following warning:
"deleting object of polymorphic class type 'fail::Gem5ArmCPU' which
has non-virtual destructor might cause undefined behaviour"
Change-Id: I5029662064e72ae87a9f0e36aeaa309e4cb2291b
(Debian 7.1 comes with gcc 4.7.2) However, we are faking a gcc v4.4.5
but the gem5 build system only adds the '-Wno-unused-but-set-variable'
flag in case of a gcc >= v4.6. Now, this flag will always be appended.
(Older gcc versions should ignore the flag or emit a warning but will
continue to run.)
Change-Id: I7021e08019951375c7e8b56d0f875191f904971d
This was necessary because LLVM 3.1's
ELFObjectFile<ELFT>::sectionContainsSymbolsectionContainsSymbol() (needed
for proper functioning of our LLVM disassembler, unless you're using
-ffunction-sections) is "unimplemented".
Change-Id: I81112627ebd1c92b718ac6f4ed58d7f188aedf0c
The random jump importer defines trace events, that indicate all
possible jumps into a specific instruction range. The region where
jumps should start can be defined by a memory map given with
--jump-from. For each instruction declared in that memory range, all
possible jumps to a memory region specified by with --jump-to are
inserted. The target of the jump is saved in the data_address
field. So all database tools work as expected.
for each event E \in region(--jump-from):
foreach Instruction in region(--jump-to):
insert_trace(injection_instr = E.IP(), data_address = Instruction.addr)
Change-Id: Ie163968acae47fc6c946fc77774c47ee07950bab
The RegisterImporter disassembles the binary and adds a trace event
for each byte read or written from register. The register number (Fail
Register Numbers are used) and the offset within the register are
encoded within the trace event.
Change-Id: I2d2fd720841fedeeff5f28b64f24ec5f6d2ea0c3
The InstructionImporter does disassemble the binary and generate read
traces for every instruction byte executed.
Change-Id: I6b8697c711c009e106ed733c74c6ff8f9bbf8ac5
The variant/benchmark selection now can use SQL LIKE syntax, all unfinished
pilots from all selected variants are sent to the clients. E.g.:
./cored-voter-server -v x86-cored-voter -b simple-% -p basic
Will select the fsppilots in the variants:
- x86-cored-voter/simple-ip/basic
- x86-cored-voter/simple-instr/basic
The variant and benchmark information is now sent within the
fsppilot.
Change-Id: I287bfcddc478d0b79d89e156d6f5bf8188674532
