Implemented two instantiations of Fault-Space Regions (FSR) as a program-structure-guided approximation of fault spaces based on the precise Def/Use-Pruning using basic blocks or function calls.
Further reading:
Program-Structure-Guided Approximation of Large Fault Spaces
Oskar Pusz and Daniel Kiechle and Christian Dietrich and Daniel Lohmann
In: 24th Pacific Rim International Symposium on Dependable Computing (PRDC'19)
IEEE Computer Science Press, 2019
Some configurations for bochs and generic-experiment
The switch to MariaDB Connector/C 3.0 involves some subtle API
changes, including the fact that "~" is not expanded to the user's
home directory anymore. This change expands the HOME environment
variable within our code base.
Change-Id: I30bc0d4fba6f0c8001832a981aa99af7e6f2a369
Some libraries, e.g. protobuf, depend on C++11 now. As they are
(indirectly) included in some .ah aspect headers, everything has to be
compiled with C++11 enabled now.
This change switches to C++14 globally.
Change-Id: I56a802bd510704d668a2b2c8957e11725fbe98b7
Due to a typo (cast to regwidth_t instead of regdata_t), accesses to
register content beyond an offset of 32 bits via
LLVMtoFailTranslator::reginfo_t did not work correctly. Additionally, this
change fixes constructing reginfo_t with a bit width >= 64 (e.g. the whole
RAX register).
Change-Id: I24914cd64fa51118eeac38cc3fb47b76790d3aac
Using switch/case instead of an if cascade is more readable and has a
better chance to be optimized.
Change-Id: I41dc2cbdf8c14bd35c91520d74b476d7b522a3a4
The "--[Server] No workload, come again..." appears every time a
larger job set is loaded from the database, once for every client that
knocks. This isn't helpful and scrolls out relevant information,
hence I'm removing it for now.
Change-Id: Ic7ca5b3a0c096b384ba4803df5b482a96bf803b1
The -p parameter is already being used by several campaign servers for
the prune method to restrict to (which was broken in commit
6c120004e), hence allow only --port to choose a different server TCP
port at runtime.
Change-Id: Ia30e40d564e85a9702118dc28df4988ec628e491
std::chrono::system_clock is not monotonic, instead use
std::chrono::steady_clock for interval measurements.
Change-Id: I231affecfe8e89481720e47b59132fc838cdf73c
If the JobServer is provided a total number of experiments by the
campaign, it now prints a completion percentage and an estimated
remaining runtime along the usual progress reports.
Change-Id: Ibd781ba8bff9af3a85683bbd29728216e316da57
The JobServer progress-report output now shows the total number of
completed jobs instead of the (almost always zero) inbound queue fill
level. Additionally, the current number of incoming results per
second is shown, which also prepares for an ETA calculation in the
following commit.
Change-Id: I6b71c45f44b9e6b9b17c059959a90068b51c165c
When prefixing a symbol name with '?', the GenericExperiment does not abort
in case the symbol is not found in the provided ELF binary:
fail-client -Wf,--detected-marker=?eddiErrorHandler
[...]
[GenericExperiment] ELF Symbol not found, ignoring: eddiErrorHandler
Change-Id: Iec12416ce8e38ff0ee1704e3a725c2cadc97b756
The JobClient now resolves the server IP once (lazily, when needed) instead
on each connect attempt, reducing the amount of DNS requests sent out.
Change-Id: I9804048d3252da333cb3addbe94a01fdf3c707c8
This bugfix makes sure that from a set of symbols with the same
address, only the first one gets imported.
After an assessment whether analysis scripts can deal with multiple
symbols at the same address, an import of all symbols should be made
possible in the future. This will also require to relax the
primary-key constraint of the `symbols' table.
Change-Id: I61c4ddb1af1556d44eab54e53eaa3d0fc20de7c1
The import-trace tool now systematically collects statistics on which
LLVM -> FAIL* register ID mappings failed during import, and presents
those after the import finished.
Change-Id: Ied67853d754483277868fe21bf2c6efeaeb60f09
The generic-experiment now learned to record and compare output on an
arbitrary serial port. Using Bochs' port 0xe9 hack (parameter
--e9-file) is kept for compatibility reasons.
Change-Id: I5b1aa02d244e8b474919e1bdf043e523ea0e4f45
Calling the DatabaseCampaign with --inject-registers or
--force-inject-registers now injects into CPU registers. This is achieved
by reinterpreting data addresses in the DB as addresses within the register
file. (The mapping between registers and data addresses is implemented in
core/util/llvmdisassembler/LLVMtoFailTranslator.hpp.) The difference
between --inject-registers and --force-inject-registers is what the
experiment does when a data address is not interpretable as a register: the
former option then injects into memory (DatabaseCampaignMessage,
RegisterInjectionMode AUTO), the latter skips the injection altogether
(FORCE).
Currently only compiles together with the Bochs backend; the
DatabaseExperiment's redecodeCurrentInstruction() function must be
moved into the Bochs EEA to remedy this.
Change-Id: I23f152ac0adf4cb6fbe82377ac871e654263fe57
elfinfo was what ElfReader started from, but is not needed in itself
anymore. The code has been mostly rewritten, so an explicit mention
of the original authors is not necessary anymore.
Change-Id: Iea48c80f9174504bbb56cc02ee2de5eda4a81489
ElfReader now detects whether a 32- or 64-bit ELF is opened, and uses
the corresponding elf.h data structures. Internally maps 32-bit ELF
structures onto 64-bit structures to use common processing code.
Change-Id: Ib42a4b21701aeadac7568e369a80c08f2807694e
Instead of using assert() (which only does something in a Debug
build), explicitly fail when a user-specified symbol is not found.
Change-Id: I33ac59ca4483ee65ba70c264b5153a7766a919d2
faultspaceplot.sh now fails gracefully if the requested
variant/benchmark combination does not exist in the database.
Change-Id: Ied3b5a0e72cc5ae8e6ce352b65486f15bb13576b
This change adds global fault-coverage and occurrence count
measurement scripts that work with sampling results.
Change-Id: I14d94a2c549cff3256fc7b0800cfd4a702e6ad35
The *-onwrite.sh analysis scripts only work if import-trace was not
run with --no-write-ecs, i.e. they only work if writing memory
accesses were imported into the "trace" table.
Change-Id: Icb2ea4e72d2200c886d4f9074f2da0f9bfd6ac85
Depending on SQL-statement nesting, some scripts already correctly sorted
resulttypes alphabetically, but some sorted along the numeric ENUM value
behind the resulttype name. This change explicitly converts the resulttype
to a string before sorting.
Change-Id: Ia18aa4e75b94a6a9f7bb125953bc85b86b3cbd6e
