The generic experiment set the TriggerAccessType not the
WatchAccessType. Therefore, the text segment listener fired on write
AND read events. The watch access type can only be set in the constructor.
This patch uses ELF segments instead of section for determining the
extent of the binary in memory. Consequently, the outerspace listener
was modified to use these new bounds. Additionally, the generic
experiment was changed to include a lowerspace listener, which listens
for write access below the physical memory location of the ELF.
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
Before this change, the GenericExperiment only recorded port 0xe9 output
*after* the fault was injected. When a fault was injected during the
workload's output loop, the output data before that point in time was
missing, and the experiment outcome was wrongly classified as SDC.
This change moves the logging activation to before the fast-forwarding
step (DatabaseExperiment::cb_before_fast_forward). It also makes sure the
DatabaseExperiment only clears its own listeners instead of also touching
the SerialOutputLogger's one.
Change-Id: I66bda4ee318d271ddda6f7ade4e817bf9d14cf46
Limit the serial-output logger buffer to prevent overly large memory
consumption in case the target system ends up, e.g., in an endless loop.
The buffer is limited to (golden-run output size)+1 to be able to detect
the case when the target system makes a correct output but faultily adds
extra characters afterwards.
Change-Id: I50c082f8fb09a702d87ab83732ca3e3463c46597
This change adds detection of SDCs to GenericTracing and
GenericExperiment via Bochs's I/O port E9.
Change-Id: Ie036aa97468b45cad94b6c8f73d1ef2d227547b2
Up until now only generic-tracing had the feature to directly
pass an ELF file to the experiment. generic-experiment lacked
that functionality and resorted to using the $FAIL_ELF_PATH
environment variable.
This change introduces the "--elf-file" command line argument
to generic-experiment.
Change-Id: Ie74de9e1781275ab247786856e13e412bac39224
Due to a bug (most likely a copy and paste issue), the detected-marker
group was defined to point to the "FAIL_marker"-set, which would be
redundant. This commit will correctly map it to the "DETECTED_marker"
group.
Change-Id: I7de688357006ced1adf2423e213ae6633629cb81
The GenericExperiment is a standard campaign+experiment pair. It is
derived from the DatabaseCampaign+DatabaseExperiment. Its experiment
endpoints are set on the command line, therefore it can be used to give
users a first impression of FAIL*. Currently it supports different
endpoints:
--trap: Catch all traps that occur and end the experiment
--timeout <N>: kill the experiment after N microseconds
--catch-write-text: detect writes on the text segment
--catch-write-outerspace: detect writes into nirvana
--{ok,fail,detected}-marker: groups of ELF symbols that are used as
execution breakpoints
Change-Id: Idc7fcf8875953f1007e1a37bacb086eddd29cd10
