File afl.changes of Package afl

Mon Jun 10 08:12:20 UTC 2024 - Marcus Meissner <>

- updated to 4.21c
  * afl-fuzz
    - fixed a regression in afl-fuzz that resulted in a 5-10% performace loss
      do a switch from gettimeofday() to clock_gettime() which should be rather
      three times faster. The reason for this is unknown.
    - new queue selection algorithm based on 2 core years of queue data
      analysis. gives a noticable improvement on coverage although the results
      seem counterintuitive :-)
    - added AFL_DISABLE_REDUNDANT for huge queues
    - added `AFL_NO_SYNC` environment variable that does what you think it does
    - run custom_post_process after standard trimming
    - prevent filenames in the queue that have spaces
    - minor fix for FAST schedules
    - more frequent stats update when syncing (todo: check performance impact)
    - now timing of calibration, trimming and syncing is measured seperately,
      thanks to @eqv!
    - -V timing is now accurately the fuzz time (without syncing), before
      long calibration times and syncing could result in now fuzzing being
      made when the time was already run out until then, thanks to @eqv!
    - fix -n uninstrumented mode when ending fuzzing
    - enhanced the ASAN configuration
    - make afl-fuzz use less memory with cmplog and fix a memleak
  * afl-cc:
    - re-enable i386 support that was accidently disabled
    - fixes for LTO and outdated afl-gcc mode for i386
    - fix COMPCOV split compare for old LLVMs
    - disable xml/curl/g_ string transform functions because we do not check
      for null pointers ... TODO
    - ensure shared memory variables are visible in weird build setups
    - compatability to new LLVM 19 changes
  * afl-cmin
    - work with input files that have a space
  * afl-showmap
    - fix memory leak on shmem testcase usage (thanks to @ndrewh)
    - minor fix to collect coverage -C (thanks to @bet4it)
  * Fixed a shmem mmap bug (that rarely came up on MacOS)
  * libtokencap: script added by @a-shvedov 

Mon Apr 15 09:44:22 UTC 2024 - Marcus Meissner <>

- updated to 4.20c
  + A new forkserver communication model is now introduced. afl-fuzz is
    backward compatible to old compiled targets if they are not built
    for CMPLOG/Redqueen, but new compiled targets will not work with
    old afl-fuzz versions!
  + Recompile all targets that are instrumented for CMPLOG/Redqueen!
  - AFL++ now supports up to 4 billion coverage edges, up from 6 million.
  - New compile option: `make PERFORMANCE=1` - this will enable special
    CPU dependent optimizations that make everything more performant - but
    the binaries will likely won't work on different platforms. Also
    enables a faster hasher if the CPU requirements are met.
  - The persistent record feature (see config.h) was expanded to also
    support replay, thanks to @quarta-qti !
  - afl-fuzz:
    - the new deterministic fuzzing feature is now activated by default,
      deactivate with -z. Parameters -d and -D are ignored.
    - small improvements to CMPLOG/redqueen
    - workround for a bug with MOpt -L when used with -M - in the future
      we will either remove or rewrite MOpt.
    - fix for `-t xxx+` feature
    - -e extension option now saves the queue items, crashes, etc. with the
      extension too
    - fixes for trimmming, correct -V time and reading stats on resume by eqv
      thanks a lot!
  - afl-cc:
    - added collision free caller instrumentation to LTO mode. activate with
      `AFL_LLVM_LTO_CALLER=1`. You can set a max depth to go through single
      block functions with `AFL_LLVM_LTO_CALLER_DEPTH` (default 0)
    - fixes for COMPCOV/LAF and most other modules
    - fix for GCC_PLUGIN cmplog that broke on std::strings
  - afl-whatsup:
    - now also displays current average speed
    - small bugfixes
  - Fixes for aflpp custom mutator and standalone tool
  - Minor edits to afl-persistent-config
  - Prevent temporary files being left behind on aborted afl-whatsup
  - More CPU benchmarks added to benchmark/

Mon Feb  5 10:30:56 UTC 2024 - Marcus Meissner <>

- updated to 4.10c
  - afl-fuzz:
    - default power schedule is now EXPLORE, due a fix in fast schedules
      explore is slightly better now.
    - fixed minor issues in the mutation engine, thanks to @futhewo for
    - better deterministic fuzzing is now available, benchmarks have shown
      to improve fuzzing. Enable with -D. Thanks to @kdsjZh for the PR!
  - afl-cc:
    - large rewrite by @SonicStark which fixes a few corner cases, thanks!
    - LTO mode now requires llvm 12+
    - workaround for ASAN with gcc_plugin mode
  - instrumentation:
    - LLVM 18 support, thanks to @devnexen!
    - Injection (SQL, LDAP, XSS) fuzzing feature now available, see
      `instrumentation/` how to activate/use/expand.
    - compcov/LAF-intel:
      - floating point splitting bug fix by @hexcoder
      - due a bug in LLVM 17 integer splitting is disabled there!
      - when splitting floats was selected, integers were always split as well,
        fixed to require AFL_LLVM_LAF_SPLIT_COMPARES or _ALL as it should
    - dynamic instrumentation filtering for LLVM NATIVE, thanks @Mozilla!
      see utils/dynamic_covfilter/
  - qemu_mode:
    - plugins are now activated by default and a new module is included that
      produces drcov compatible traces for lighthouse/lightkeeper/...
      thanks to @JRomainG to submitting!
  - updated Nyx checkout (fixes a bug) and some QOL
  - updated the custom grammar mutator
  - document afl-cmin does not work on macOS (but afl-cmin.bash does)

Sun Dec 17 12:08:00 UTC 2023 - Marcus Meissner <>

- updated to 4.09c
  - afl-fuzz:
    - fixed the new mutation implementation for two bugs
    - added `AFL_FINAL_SYNC` which forces a final fuzzer sync (also for `-F`)
      before terminating.
    - added AFL_IGNORE_SEED_PROBLEMS to skip over seeds that time out instead
      of exiting with an error message
    - allow -S/-M naming up to 50 characters (from 24)
    - CMPLOG:
      - added scale support (-l S)
      - skip unhelpful insertions (u8)
    - added --version and --help command line parameters
    - fixed endless loop when reading malformed dictionaries
    - new custom mutator function: post_run - thanks to yangzao!
  - afl-whatsup:
    - detect instanced that are starting up and show them as such as not dead
    - now also shows coverage reached
    - option -m shows only very relevant stats
    - option -n will not use color in the output
  - instrumentation:
    - fix for a few string compare transform functions for LAF
    - we are instrumenting __cxx internal functions again. this might break
      a few targets, please report if so.
  - frida_mode:
    - fixes support for large map offsets
  - support for AFL_FUZZER_LOOPCOUNT for and LLVMFuzzerTestOneInput
  - afl-cmin/afl-cmin.bash: prevent unneeded file errors
  - added new tool afl-addseeds that adds new seeds to a running campaign
  - added benchmark/ if you want to see how good your fuzzing
    speed is in comparison to other setups.

Fri Aug 11 08:06:00 UTC 2023 - Marcus Meissner <>

- updated to 4.08c
  - afl-fuzz:
    - new mutation engine: mutations that favor discovery more paths are
      prefered until no new finds for 10 minutes then switching to mutations
      that favor triggering crashes. Modes and switch time can be configured
      with `-P`. Also input mode for the target can be defined with `-a` to
      be `text` or `binary` (defaults to `generic`)
    - new custom mutator that has the new afl++ engine (so it can easily
      incorporated into new custom mutators), and also comes with a standalone
      command line tool! See custom_mutators/aflpp/standalone/
    - display the state of the fuzzing run in the UI :-)
    - fix timeout setting if '+' is used or a session is restarted
    - -l X option to enable base64 transformation solving
    - allow to disable CMPLOG with '-c -' (e.g. enforces '-c 0' on
      every instance which is counterproductive).
  - afl-cmin/afl-cmin.bash:
    - fixed a bug inherited from vanilla AFL where a coverage of
      map[123] = 11 would be the same as map[1123] = 1
    - warn on crashing inputs
    - adjust threads if less inputs than threads specified
  - afl-cc:
    - fixed an off-by-one instrumentation of iselect, hurting coverage a bit.
      Thanks to @amykweon for spotting and fixing!
    - @toka fixed a bug in laf-intel signed integer comparison splitting,
      thanks a lot!!
    - more LLVM compatability
  - frida_mode:
    - support for long form instrumentation on x86_x64 and arm64
    - renamed utils/ to utils/
  - qemu_mode:
    - added qemu_mode/utils/

Mon Jun 12 11:31:30 UTC 2023 - Marcus Meissner <>

- updated to 4.07c
  - afl-fuzz:
    - reverse reading the seeds only on restarts (increases performance)
    - new env `AFL_POST_PROCESS_KEEP_ORIGINAL` to keep the orignal
      data before post process on finds (for atnwalk custom mutator)
    - new env `AFL_IGNORE_PROBLEMS_COVERAGE` to ignore coverage from
      loaded libs after forkserver initialization (required by Mozilla)
  - afl-cc:
    - added @responsefile support
    - new env `AFL_LLVM_LTO_SKIPINIT` to support the AFL++ based WASM
      ( project
    - error and print help if afl-clan-lto is used with lto=thin
    - rewrote our PCGUARD pass to be compatible with LLVM 15+ shenanigans,
      requires LLVM 13+ now instead of 10.0.1+
    - fallback to native LLVM PCGUARD if our PCGUARD is unavailable
    - fixed a crash in GCC CMPLOG
  - afl-showmap:
    - added custom mutator post_process and send support
    - add `-I filelist` option, an alternative to `-i in_dir`
  - afl-cmin + afl-cmin.bash:
    - `-T threads` parallel task support, can be a huge speedup!
  - qemu_mode:
    - Persistent mode + QASAN support for ppc32 targets by @worksbutnottested
  - a new grammar custom mutator atnwalk was submitted by @voidptr127 !
  - two new custom mutators are now available:
    - TritonDSE in custom_mutators/aflpp_tritondse
    - SymQEMU in custom_mutators/symqemu
- removed ppc64le condition (failed parsing), we have no 32bit ppc64le

Mon Apr 17 09:26:21 UTC 2023 - Marcus Meissner <>

- updated to 4.06c
  - afl-fuzz:
    - ensure temporary file descriptor is closed when not used
    - added time_wo_finds to fuzzer_stats
    - fixed a crash in pizza (1st april easter egg) mode. Sorry for
      everyone who was affected!
    - allow pizza mode to be disabled when AFL_PIZZA_MODE is set to -1
    - option `-p mmopt` now also selects new queue items more often
    - fix bug in post_process custom mutator implementation
    - print name of custom mutator in UI
    - slight changes that improve fuzzer performance
  - afl-cc:
    - add CFI sanitizer variant to gcc targets
    - llvm 16 + 17 support (thanks to @devnexen!)
    - support llvm 15 native pcguard changes
    - support for LLVMFuzzerTestOneInput -1 return
    - LTO autoken and llvm_mode: added AFL_LLVM_DICT2FILE_NO_MAIN support
  - qemu_mode:
    - fix _RANGES envs to allow hyphens in the filenames
    - basic riscv support
  - frida_mode:
    - fix issue on MacOS
  - unicorn_mode:
    - updated and minor issues fixed
  - nyx_mode support for all tools
  - better sanitizer default options support for all tools
  - new custom module: autotoken, a grammar free fuzzer for text inputs
  - fixed custom mutator C examples
  - more minor fixes and cross-platform support

Wed Apr 12 09:26:02 UTC 2023 - Dominique Leuenberger <>

- Pin to llvm15 for the time being: code fails to build with

Thu Jan  5 15:33:51 UTC 2023 - Marcus Meissner <>

- updated to 4.05c
  - afl-fuzz:
    - added afl_custom_fuzz_send custom mutator feature. Now your can
      send fuzz data to the target as you need, e.g. via IPC.
    - cmplog mode now has a -l R option for random colorization, thanks
      to guyf2010 for the PR!
    - queue statistics are written every 30 minutes to
      out/NAME/queue_data if compiled with INTROSPECTION
  - afl-showmap/afl-cmin
    - `-t none` now translates to `-t 120000` (120 seconds)
  - unicorn_mode updated
  - updated rust custom mutator dependencies and LibAFL custom mutator
  - several minor bugfixes

Sat Oct 22 14:15:36 UTC 2022 - Andreas Schwab <>

- Update file list for riscv64

Fri Oct 21 14:28:09 UTC 2022 - Marcus Meissner <>

- updated to 4.04c
  - fix gramatron and grammar_mutator build scripts
  - enhancements to the afl-persistent-config and afl-system-config
  - scripts
  - afl-fuzz:
    -   force writing all stats on exit
  - afl-cc:
    -   make gcc_mode (afl-gcc-fast) work with gcc down to version 3.6
  - qemu_mode:
    -   fixed 10x speed degredation in v4.03c
    -   added qemu_mode/fastexit helper library
  - unicorn_mode:
    -   Enabled tricore arch (by @jma-qb)
    -   Updated Capstone version in Rust bindings
  - llvm-mode:
    -   AFL runtime will always pass inputs via shared memory, when possible,
        ignoring the command line.

Tue Sep 20 15:50:19 UTC 2022 - Marcus Meissner <>

- updated to 4.03c
  - Building now gives a build summary what succeeded and what not
  - afl-fuzz:
    - added AFL_NO_STARTUP_CALIBRATION to start fuzzing at once instead
      of calibrating all initial seeds first. Good for large queues
      and long execution times, especially in CIs.
    - default calibration cycles set to 7 from 8, and only add 5 cycles
      to variables queue items instead of 12.
  - afl-cc:
    - fixed off-by-one bug in our pcguard implemenation, thanks for
      @tokatoka for reporting
    - fix for llvm 15 and reenabling LTO, thanks to nikic for the PR!
    - better handling of -fsanitize=..,...,.. lists
    - support added for LLVMFuzzerRunDriver()
    - fix gcc_mode cmplog
    - obtain the map size of a target with setting AFL_DUMP_MAP_SIZE=1
      note that this will exit the target before main()
  - qemu_mode:
    - added AFL_QEMU_TRACK_UNSTABLE to log the addresses of unstable
      edges (together with AFL_DEBUG=1 afl-fuzz). thanks to
  - afl-analyze broke at some point, fix by CodeLogicError, thank you!
  - afl-cmin/afl-cmin.bash now have an -A option to allow also crashing
    and timeout inputs
  - unicorn_mode:
    - updated upstream unicorn version
    - fixed builds for aarch64
    - build now uses all available cores

Sat Aug 20 11:55:57 UTC 2022 - Marcus Meissner <>

- updated to 4.02c
  - afl-cc:
    - important fix for the default pcguard mode when LLVM IR vector
      selects are produced, thanks to @juppytt for reporting!
  - gcc_plugin:
    -   Adacore submitted CMPLOG support to the gcc_plugin! :-)
  - llvm_mode:
    -   laf cmp splitting fixed for more comparison types
  - frida_mode:
    -   now works on Android!
  - afl-fuzz:
    - change post_process hook to allow returning NULL and 0 length to
      tell afl-fuzz to skip this mutated input

Tue Jun 28 14:32:52 UTC 2022 - Marcus Meissner <>

- updated to 4.01c
  - fixed */ scripts to work outside of git
  - new custom_mutator: libafl with token fuzzing :)
  - afl-fuzz:
    - when you just want to compile once and set CMPLOG, then just
      set -c 0 to tell afl-fuzz that the fuzzing binary is also for
    - new commandline options -g/G to set min/max length of generated
      fuzz inputs
    - you can set the time for syncing to other fuzzer now with
    - reintroduced AFL_PERSISTENT and AFL_DEFER_FORKSRV to allow
      persistent mode and manual forkserver support if these are not
      in the target binary (e.g. are in a shared library)
    - add AFL_EARLY_FORKSERVER to install the forkserver as earliest as
      possible in the target (for afl-gcc-fast/afl-clang-fast/
    - "saved timeouts" was wrong information, timeouts are still thrown
      away by default even if they have new coverage (hangs are always
      kept), unless AFL_KEEP_TIMEOUTS are set
    - AFL never implemented auto token inserts (but user token inserts,
      user token overwrite and auto token overwrite), added now!
    - fixed a mutation type in havoc mode
    - Mopt fix to always select the correct algorithm
    - fix effector map calculation (deterministic mode)
    - fix custom mutator post_process functionality
    - document and auto-activate pizza mode on condition
  - afl-cc:
    - due a bug in lld of llvm 15 LTO instrumentation wont work atm :-(
    - converted all passed to use the new llvm pass manager for llvm 11+
    - AFL++ PCGUARD mode is not available for 10.0.1 anymore (11+ only)
    - trying to stay on top on all these #$&ยง!! changes in llvm 15 ...
  - frida_mode:
    - update to new frida release, handles now c++ throw/catch
  - unicorn_mode:
    - update unicorn engine, fix C example
  - utils:
    - removed optimin because it looses coverage due to a bug and is
      unmaintained :-(
- removed upstream llvm14-fix-build.patch
Sat Jun  4 13:26:34 UTC 2022 - Aaron Puchert <>

- Add llvm14-fix-build.patch: fix build with LLVM 14. 

Wed Feb 23 22:21:07 UTC 2022 - Aaron Puchert <>

- Fix build with armv7l on Leap: we have afl-llvm-rt-lto{,-32}.o.
- Fix build with ppc64le: we don't seem to have the 32-bit object
  files available there and there is also no gcc-32bit.

Mon Jan 31 12:45:45 UTC 2022 - Marcus Meissner <>

- updated to 4.00c

  - complete documentation restructuring, made possible by Google Season
    of Docs :) thank you Jana!
  - we renamed several UI and fuzzer_stat entries to be more precise,
    e.g. "unique crashes" -> "saved crashes", "total paths" ->
    "corpus count", "current path" -> "current item".
    This might need changing custom scripting!
  - Nyx mode (full system emulation with snapshot capability) has been
    added - thanks to @schumilo and @eqv!
  - unicorn_mode:
    -   Moved to unicorn2! by Ziqiao Kong (@lazymio)
    -   Faster, more accurate emulation (newer QEMU base), risc-v support
    -   removed indirections in rust callbacks
  - new binary-only fuzzing mode: coresight_mode for aarch64 CPUs :)
    thanks to RICSecLab submitting!
  - if instrumented libaries are dlopen()'ed after the forkserver you
    will now see a crash. Before you would have colliding coverage.
    We changed this to force fixing a broken setup rather then allowing
    ineffective fuzzing.
  - See docs/ how to fix such setups.
  - afl-fuzz:
    -   cmplog binaries will need to be recompiled for this version
        (it is better!)
    -   fix a regression introduced in 3.10 that resulted in less
        coverage being detected. thanks to Collin May for reporting!
    -   ensure all spawned targets are killed on exit
    -   added AFL_IGNORE_PROBLEMS, plus checks to identify and abort on
        incorrect LTO usage setups and enhanced the READMEs for better
        information on how to deal with instrumenting libraries
    -   fix -n dumb mode (nobody should use this mode though)
    -   fix stability issue with LTO and cmplog
    -   better banner
    -   more effective cmplog mode
    -   more often update the UI when in input2stage mode
  - qemu_mode/unicorn_mode: fixed OOB write when using libcompcov,
    thanks to kotee4ko for reporting!
  - frida_mode:
    -   better performance, bug fixes
    -   David Carlier added Android support :)
  - afl-showmap, afl-tmin and afl-analyze:
    -   honor persistent mode for more speed. thanks to dloffre-snl
        for reporting!
    -   fix bug where targets are not killed on timeouts
    -   moved hidden afl-showmap -A option to -H to be used for
  - Prevent accidentaly killing non-afl/fuzz services when aborting
    afl-showmap and other tools.
  - afl-cc:
    -   detect overflow reads on initial input buffer for asan
    -   new cmplog mode (incompatible with older afl++ versions)
    -   support llvm IR select instrumentation for default PCGUARD and LTO
    -   fix for shared linking on MacOS
    -   better selective instrumentation AFL_LLVM_{ALLOW|DENY}LIST
        on filename matching (requires llvm 11 or newer)
    -   fixed a potential crash in targets for LAF string handling
    -   fixed a bad assert in LAF split switches
    -   added AFL_USE_TSAN thread sanitizer support
    -   llvm and LTO mode modified to work with new llvm 14-dev (again.)
    -   fix for AFL_REAL_LD
    -   more -z defs filtering
    -   make -v without options work
  - added the very good grammar mutator "GramaTron" to the
  - added optimin, a faster and better corpus minimizer by
    Adrian Herrera. Thank you!
  - added afl-persistent-config script to set perform permanent system
    configuration settings for fuzzing, for Linux and Macos.
    thanks to jhertz!
  - added xml, curl & exotic string functions to llvm dictionary feature
  - fix AFL_PRELOAD issues on MacOS
  - removed utils/afl_frida because frida_mode/ is now so much better
  - added uninstall target to makefile (todo: update new readme!)

Sun Sep 26 11:04:42 UTC 2021 - Marcus Meissner <>

- enable gcc-plugin on factory
- build with 32bit plugins on x86_64

Mon Jul 19 12:49:59 UTC 2021 - Marcus Meissner <>

- updated to 3.14c
  - afl-fuzz:                                                                                                                                                                                
    - fix -F when a '/' was part of the parameter                                                                                                                                            
    - fixed a crash for cmplog for very slow inputs                                                                                                                                          
    - fix for AFLfast schedule counting                                                                                                                                                      
    - removed implied -D determinstic from -M main                                                                                                                                           
    - if the target becomes unavailable check out out/default/error.txt                                                                                                                      
      for an indicator why                                                                                                                                                                   
    - AFL_CAL_FAST was a dead env, now does the same as AFL_FAST_CAL                                                                                                                         
    - reverse read the queue on resumes (more effective)                                                                                                                                     
    - fix custom mutator trimming                                                                                                                                                            
  - afl-cc:                                                                                                                                                                                  
    - Update to COMPCOV/laf-intel that speeds up the instrumentation                                                                                                                         
      process a lot - thanks to Michael Rodler/f0rki for the PR!                                                                                                                             
    - Fix for failures for some sized string instrumentations                                                                                                                                
    - Fix to instrument global namespace functions in c++                                                                                                                                    
    - Fix for llvm 13                                                                                                                                                                        
    - support partial linking                                                                                                                                                                
    - do honor AFL_LLVM_{ALLOW/DENY}LIST for LTO autodictionary and DICT2FILE                                                                                                                
    - We do support llvm versions from 3.8 to 5.0 again                                                                                                                                      
  - frida_mode:                                                                                                                                                                              
    - several fixes for cmplog                                                                                                                                                               
    - remove need for AFL_FRIDA_PERSISTENT_RETADDR_OFFSET                                                                                                                                    
    - less coverage collision                                                                                                                                                                
    - feature parity of aarch64 with intel now (persistent, cmplog,                                                                                                                          
      in-memory testcases, asan)                                                                                                                                                             
  - afl-cmin and afl-showmap -i do now descend into subdirectories                                                                                                                           
    (like afl-fuzz does) - note that afl-cmin.bash does not!                                                                                                                                 
  - afl_analyze:                                                                                                                                                                             
    - fix timeout handling                                                                                                                                                                   
    - add forkserver support for better performance                                                                                                                                          
  - ensure afl-compiler-rt is built for gcc_module                                                                                                                                           
  - always build aflpp_driver for libfuzzer harnesses                                                                                                                                        
  - added `AFL_NO_FORKSRV` env variable support to                                                                                                                                           
    afl-cmin, afl-tmin, and afl-showmap, by @jhertz                                                                                                                                          
  - removed outdated documents, improved existing documentation                                                                                                                              

Thu Jul 15 19:29:19 UTC 2021 - Peace Peters <>

- s390x added to the compiler files

Tue Jun  8 09:06:11 UTC 2021 - Andreas Schwab <>

- Fix filelist for riscv64

Tue Jun  1 10:36:06 UTC 2021 - Marcus Meissner <>

- updated to 3.13c
  - Note: plot_data switched to relative time from unix time in 3.10
  - frida_mode - new mode that uses frida to fuzz binary-only targets,
    it currently supports persistent mode and cmplog.
    thanks to @WorksButNotTested!
  - create a fuzzing dictionary with the help of CodeQL thanks to
    @microsvuln! see utils/autodict_ql
  - afl-fuzz:
    - added patch by @realmadsci to support @@ as part of command line
      options, e.g. `afl-fuzz ... -- ./target --infile=@@`
    - add recording of previous fuzz attempts for persistent mode
      to allow replay of non-reproducable crashes, see
      AFL_PERSISTENT_RECORD in config.h and docs/envs.h
    - fixed a bug when trimming for stdin targets
    - cmplog -l: default cmplog level is now 2, better efficiency.
      level 3 now performs redqueen on everything. use with care.
    - better fuzzing strategy yield display for enabled options
    - ensure one fuzzer sync per cycle
    - fix afl_custom_queue_new_entry original file name when syncing
      from fuzzers
    - fixed a crash when more than one custom mutator was used together
      with afl_custom_post_process
    - on a crashing seed potentially the wrong input was disabled
    - added AFL_EXIT_ON_SEED_ISSUES env that will exit if a seed in
      -i dir crashes the target or results in a timeout. By default
      afl++ ignores these and uses them for splicing instead.
    - added AFL_EXIT_ON_TIME env that will make afl-fuzz exit fuzzing
      after no new paths have been found for n seconds
    - when AFL_FAST_CAL is set a variable path will now be calibrated
      8 times instead of originally 40. Long calibration is now 20.
    - added AFL_TRY_AFFINITY to try to bind to CPUs but don't error if
      it fails
  - afl-cc:
    - We do not support llvm versions prior 6.0 anymore
    - added thread safe counters to all modes (`AFL_LLVM_THREADSAFE_INST`),
      note that this disables NeverZero counters.
    - Fix for -pie compiled binaries with default afl-clang-fast PCGUARD
    - Leak Sanitizer (AFL_USE_LSAN) added by Joshua Rogers, thanks!
    - Removed InsTrim instrumentation as it is not as good as PCGUARD
    - Removed automatic linking with -lc++ for LTO mode
    - Fixed a crash in llvm dict2file when a strncmp length was -1
    - added --afl-noopt support
  - utils/aflpp_driver:
    - aflpp_qemu_driver_hook fixed to work with qemu_mode
    - aflpp_driver now compiled with -fPIC
  - unicornafl:
    - fix MIPS delay slot caching, thanks @JackGrence
    - fixed aarch64 exit address
    - execution no longer stops at address 0x0
  - updated afl-system-config to support Arch Linux weirdness and increase
    MacOS shared memory
  - updated the grammar custom mutator to the newest version
  - add -d (add dead fuzzer stats) to afl-whatsup
  - added AFL_PRINT_FILENAMES to afl-showmap/cmin to print the
    current filename
  - afl-showmap/cmin will now process queue items in alphabetical order

Fri Apr  9 12:25:49 UTC 2021 - Guillaume GARDET <>

- Fix packaging for aarch64 and %arm

Sat Apr  3 23:31:18 UTC 2021 - Niklas Haas <>

- install `afl-clang-lto`, recommended by upstream as the best variant
  - add dependency on `lld`
  - bump llvm-devel up to >= 11.0.0
- fix /usr/bin/env path in afl.cmin scripts
- prevent stripping of runtime objects (fix bug 1184324)

Mon Mar 29 12:29:54 UTC 2021 - Guillaume GARDET <>

- Fix packaging on aarch64 and %{arm}

Wed Mar 24 16:30:39 UTC 2021 - Marcus Meissner <>

- updated to 3.12c
  - afl-fuzz:
    - added AFL_TARGET_ENV variable to pass extra env vars to the target
      (for things like LD_LIBRARY_PATH)
    - fix map detection, AFL_MAP_SIZE not needed anymore for most cases
    - fix counting favorites (just a display thing)
  - afl-cc:
    - fix cmplog rtn (rare crash and not being able to gather ptr data)
    - fix our own PCGUARD implementation to compile with llvm 10.0.1
    - link runtime not to shared libs
    - ensure shared libraries are properly built and instrumented
    - AFL_LLVM_INSTRUMENT_ALLOW/DENY were not implemented for LTO, added
    - show correct LLVM PCGUARD NATIVE mode when auto switching to it
      and keep fsanitize-coverage-*list=...
      Short mnemnonic NATIVE is now also accepted.
  - qemu_mode (thanks @realmadsci):
    - move AFL_PRELOAD and AFL_USE_QASAN logic inside afl-qemu-trace
  - unicorn_mode
    - accidently removed the subfolder from github, re-added
  - added DEFAULT_PERMISSION to config.h for all files created, default
    to 0600

Tue Mar 16 07:43:01 UTC 2021 - Marcus Meissner <>

- updated to 3.11c
  - afl-fuzz:
    - better auto detection of map size
    - fix sanitizer settings (bug since 3.10c)
    - fix an off-by-one overwrite in cmplog
    - add non-unicode variants from unicode-looking dictionary entries
    - Rust custom mutator API improvements
    - Imported crash stats painted yellow on resume (only new ones are red)
  - afl-cc:
    - added AFL_NOOPT that will just pass everything to the normal
      gcc/clang compiler without any changes - to pass weird configure
    - fixed a crash that can occur with ASAN + CMPLOG together plus
      better support for unicode (thanks to @stbergmann for reporting!)
    - fixed a crash in LAF transform for empty strings
    - handle erroneous setups in which multiple afl-compiler-rt are
      compiled into the target. This now also supports dlopen()
      instrumented libs loaded before the forkserver and even after the
      forkserver is started (then with collisions though)
    - the compiler rt was added also in object building (-c) which
      should have been fixed years ago but somewhere got lost :(
    - Renamed CTX to CALLER, added correct/real CTX implementation to
  - qemu_mode:
    - added AFL_QEMU_EXCLUDE_RANGES env by @realmadsci, thanks!
    - if no new/updated checkout is wanted, build with:
      NO_CHECKOUT=1 ./
    - we no longer perform a "git drop"
  - afl-cmin: support filenames with spaces
- afl-3.0c-fix-paths.patch: refreshed

Mon Mar  1 09:43:40 UTC 2021 - Marcus Meissner <>

- update to 3.10c
  - Mac OS ARM64 support                                                                                                                                                                     
  - Android support fixed and updated by Joey Jiaojg - thanks!                                                                                                                               
  - New selective instrumentation option with __AFL_COVERAGE_* commands                                                                                                                      
    to be placed in the source code.                                                                                                                                                         
    Check out instrumentation/                                                                                                                                      
  - afl-fuzz                                                                                                                                                                                 
    - Making AFL_MAP_SIZE (mostly) obsolete - afl-fuzz now learns on                                                                                                                         
      start the target map size                                                                                                                                                              
    - upgraded cmplog/redqueen: solving for floating point, solving                                                                                                                          
      transformations (e.g. toupper, tolower, to/from hex, xor,                                                                                                                              
      arithmetics, etc.). This is costly hence new command line option                                                                                                                       
      `-l` that sets the intensity (values 1 to 3). Recommended is 2.                                                                                                                        
    - added `AFL_CMPLOG_ONLY_NEW` to not use cmplog on initial seeds                                                                                                                         
      from `-i` or resumes (these have most likely already been done)                                                                                                                        
    - fix crash for very, very fast targets+systems (thanks to mhlakhani                                                                                                                     
      for reporting)                                                                                                                                                                         
    - on restarts (`-i`)/autoresume (AFL_AUTORESUME) the stats are now                                                                                                                       
      reloaded and used, thanks to Vimal Joseph for this patch!                                                                                                                              
    - changed the meaning of '+' of the '-t' option, it now means to                                                                                                                         
      auto-calculate the timeout with the value given being the max                                                                                                                          
      timeout. The original meaning of skipping timeouts instead of                                                                                                                          
      abort is now inherent to the -t option.                                                                                                                                                
    - if deterministic mode is active (`-D`, or `-M` without `-d`) then                                                                                                                      
      we sync after every queue entry as this can take very long time                                                                                                                        
    - added minimum SYNC_TIME to include/config.h (30 minutes default)                                                                                                                       
    - better detection if a target needs a large shared map                                                                                                                                  
    - fix for `-Z`                                                                                                                                                                           
    - fixed a few crashes                                                                                                                                                                    
    - switched to an even faster RNG                                                                                                                                                         
    - added hghwng's patch for faster trace map analysis                                                                                                                                     
    - printing suggestions for mistyped `AFL_` env variables                                                                                                                                 
    - added Rust bindings for custom mutators (thanks @julihoh)                                                                                                                              
  - afl-cc                                                                                                                                                                                   
    - allow instrumenting LLVMFuzzerTestOneInput                                                                                                                                             
    - fixed endless loop for allow/blocklist lines starting with a                                                                                                                           
      comment (thanks to Zherya for reporting)                                                                                                                                               
    - cmplog/redqueen now also tracks floating point, _ExtInt() + 128bit                                                                                                                     
    - cmplog/redqueen can now process basic libc++ and libstdc++                                                                                                                             
      std::string comparisons (no position or length type variants)                                                                                                                          
    - added support for __afl_coverage_interesting() for LTO and our                                                                                                                         
      own PCGUARD (llvm 10.0.1+), read more about this function and                                                                                                                          
      selective coverage in instrumentation/                                                                                                                        
    - added AFL_LLVM_INSTRUMENT option NATIVE for native clang pc-guard                                                                                                                      
      support (less performant than our own), GCC for old afl-gcc and                                                                                                                        
      CLANG for old afl-clang                                                                                                                                                                
    - fixed a potential crash in the LAF feature                                                                                                                                             
    - workaround for llvm bitcast lto bug                                                                                                                                                    
    - workaround for llvm 13                                                                                                                                                                 
  - qemuafl                                                                                                                                                                                  
    - QASan (address sanitizer for Qemu) ported to qemuafl!                                                                                                                                  
      See qemu_mode/libqasan/                                                                                                                                                       
    - solved some persistent mode bugs (thanks Dil4rd)                                                                                                                                       
    - solved an issue when dumping the memory maps (thanks wizche)                                                                                                                           
    - Android support for QASan                                                                                                                                                              
  - unicornafl                                                                                                                                                                               
    - Substantial speed gains in python bindings for certain use cases                                                                                                                       
    - Improved rust bindings                                                                                                                                                                 
    - Added a new example harness to compare python, c and rust bindings                                                                                                                     
  - afl-cmin and afl-showmap now support the -f option                                                                                                                                       
  - afl_plot now also generates a graph on the discovered edges                                                                                                                              
  - changed default: no memory limit for afl-cmin and afl-cmin.bash                                                                                                                          
  - warn on any _AFL and __AFL env vars.                                                                                                                                                     
  - set AFL_IGNORE_UNKNOWN_ENVS to not warn on unknown AFL_... env vars                                                                                                                      
  - added dummy Makefile to instrumentation/                                                                                                                                                 
  - Updated utils/afl_frida to be 5% faster, 7% on x86_x64                                                                                                                                   
  - Added `AFL_KILL_SIGNAL` env variable (thanks @v-p-b)                                                                                                                                     
  - @Edznux added a nice documentation on how to use rpc.statsd with                                                                                                                         
    afl++ in docs/, thanks!                                                                                                                                                     

Tue Dec 15 09:18:09 UTC 2020 - Marcus Meissner <>

- updated to 3.0c
  - llvm_mode/ and gcc_plugin/ moved to instrumentation/
  - examples/ renamed to utils/
  - moved libdislocator, libtokencap and qdbi_mode to utils/
  - all compilers combined to afl-cc which emulates the previous ones
  - afl-llvm/gcc-rt.o merged into afl-compiler-rt.o
  - afl-fuzz
    - not specifying -M or -S will now auto-set "-S default"
    - deterministic fuzzing is now disabled by default and can be enabled with
      -D. It is still enabled by default for -M.
    - a new seed selection was implemented that uses weighted randoms based on
      a schedule performance score, which is much better that the previous
      walk the whole queue approach. Select the old mode with -Z (auto enabled
      with -M)
    - Marcel Boehme submitted a patch that improves all AFFast schedules :)
    - the default schedule is now FAST
    - memory limits are now disabled by default, set them with -m if required
    - rpc.statsd support, for stats and charts, by Edznux, thanks a lot!
    - reading testcases from -i now descends into subdirectories
    - allow the -x command line option up to 4 times
    - loaded extras now have a duplication protection
    - If test cases are too large we do a partial read on the maximum
      supported size
    - longer seeds with the same trace information will now be ignored
      for fuzzing but still be used for splicing
    - crashing seeds are now not prohibiting a run anymore but are
      skipped - they are used for splicing, though
    - update MOpt for expanded havoc modes
    - setting the env var AFL_NO_AUTODICT will not load an LTO autodictionary
    - added NO_SPLICING compile option and makefile define
    - added INTROSPECTION make target that writes all mutations to
    - print special compile time options used in help output
    - when using -c cmplog, one of the childs was not killed, fixed
    - somewhere we broke -n dumb fuzzing, fixed
    - added afl_custom_describe to the custom mutator API to allow for easy
      mutation reproduction on crashing inputs
  - instrumentation
    - We received an enhanced gcc_plugin module from AdaCore, thank you
      very much!!
    - not overriding -Ox or -fno-unroll-loops anymore
    - we now have our own trace-pc-guard implementation. It is the same as
      -fsanitize-coverage=trace-pc-guard from llvm 12, but: it is a) inline
      and b) works from llvm 10.0.1 + onwards :)
    - new llvm pass: dict2file via AFL_LLVM_DICT2FILE, create afl-fuzz
      -x dictionary of string comparisons found during compilation
    - LTO autodict now also collects interesting cmp comparisons,
      std::string compare + find + ==, bcmp
    - fix crash in dict2file for integers > 64 bit
  - custom mutators
    - added a new custom mutator: symcc ->
    - added a new custom mutator: libfuzzer that integrates libfuzzer mutations
    - Our afl++ Grammar-Mutator is now better integrated into custom_mutators/
    - added INTROSPECTION support for custom modules
    - python fuzz function was not optional, fixed
    - some python mutator speed improvements
  - afl-cmin/afl-cmin.bash now search first in PATH and last in AFL_PATH
  - unicornafl synced with upstream version 1.02 (fixes, better rust bindings)
  - added AFL_CRASH_EXITCODE env variable to treat a child exitcode as crash
- afl-2.63c-fix-paths.patch refreshed to afl-3.0c-fix-paths.patch

Sat Sep  5 08:43:19 UTC 2020 - Marcus Meissner <>

- updated to 2.68c
  - added the GSoC excellent afl++ grammar mutator by Shengtuo to our                                                                                                                        
    custom_mutators/ (see custom_mutators/ - or get it here:                                                                                                                                                                                                                                                             
  - a few QOL changes for Apple and its outdated gmake                                                                                                                                       
  - afl-fuzz:                                                                                                                                                                                
    - fix for auto dictionary entries found during fuzzing to not throw out                                                                                                                  
      a -x dictionary                                                                                                                                                                        
    - added total execs done to plot file                                                                                                                                                    
    - AFL_MAX_DET_EXTRAS env variable added to control the amount of                                                                                                                         
      deterministic dict entries without recompiling.                                                                                                                                        
    - AFL_FORKSRV_INIT_TMOUT env variable added to control the time to wait                                                                                                                  
      for the forkserver to come up without the need to increase the overall                                                                                                                 
    - bugfix for cmplog that results in a heap overflow based on target data                                                                                                                 
      (thanks to the magma team for reporting!)                                                                                                                                              
    - write fuzzing setup into out/fuzzer_setup (environment variables and                                                                                                                   
      command line)                                                                                                                                                                          
  - custom mutators:                                                                                                                                                                         
    - added afl_custom_fuzz_count/fuzz_count function to allow specifying                                                                                                                    
      the number of fuzz attempts for custom_fuzz                                                                                                                                            
  - llvm_mode:                                                                                                                                                                               
    - ported SanCov to LTO, and made it the default for LTO. better                                                                                                                          
      instrumentation locations                                                                                                                                                              
    - Further llvm 12 support (fast moving target like afl++ :-) )                                                                                                                           
    - deprecated LLVM SKIPSINGLEBLOCK env environment                                                                                                                                        

Wed Aug 19 14:35:25 UTC 2020 - Marcus Meissner <>

- updated to 2.67c
  - Support for improved afl++ snapshot module:                                                                                                                                                                                                                                                                                   
  - Due to the instrumentation needing more memory, the initial memory sizes                                                                                                                 
    for -m have been increased                                                                                                                                                               
  - afl-fuzz:                                                                                                                                                                                
     - added -F option to allow -M main fuzzers to sync to foreign fuzzers,                                                                                                                  
       e.g. honggfuzz or libfuzzer                                                                                                                                                           
     - added -b option to bind to a specific CPU                                                                                                                                             
     - eliminated CPU affinity race condition for -S/-M runs                                                                                                                                 
     - expanded havoc mode added, on no cycle finds add extra splicing and                                                                                                                   
       MOpt into the mix                                                                                                                                                                     
     - fixed a bug in redqueen for strings and made deterministic with -s                                                                                                                    
  - llvm_mode:                                                                                                                                                                               
     - now supports llvm 12                                                                                                                                                                  
     - support for AFL_LLVM_ALLOWLIST/AFL_LLVM_DENYLIST (previous                                                                                                                            
       AFL_LLVM_WHITELIST and AFL_LLVM_INSTRUMENT_FILE are deprecated and                                                                                                                    
       are matched to AFL_LLVM_ALLOWLIST). The format is compatible to llvm                                                                                                                  
       sancov, and also supports function matching :)                                                                                                                                        
     - added neverzero counting to trace-pc/pcgard                                                                                                                                           
     - fixes for laf-intel float splitting (thanks to mark-griffin for                                                                                                                       
     - fixes for llvm 4.0                                                                                                                                                                    
     - skipping ctors and ifuncs for instrumentation                                                                                                                                         
     - LTO: switch default to the dynamic memory map, set AFL_LLVM_MAP_ADDR                                                                                                                  
            for a fixed map address (eg. 0x10000)                                                                                                                                            
     - LTO: improved stability for persistent mode, no other instrumentation                                                                                                                 
            has that advantage                                                                                                                                                               
     - LTO: fixed autodict for long strings                                                                                                                                                  
     - LTO: laf-intel and redqueen/cmplog are now applied at link time                                                                                                                       
            to prevent llvm optimizing away the splits                                                                                                                                       
     - LTO: autodictionary mode is a fixed default now                                                                                                                                       
     - LTO: instrim instrumentation disabled, only classic support used                                                                                                                      
            as it is always better                                                                                                                                                           
     - LTO: env var AFL_LLVM_DOCUMENT_IDS=file will document which edge ID                                                                                                                   
            was given to which function during compilation                                                                                                                                   
     - LTO: single block functions were not implemented by default, fixed                                                                                                                    
     - LTO: AFL_LLVM_SKIP_NEVERZERO behaviour was inversed, fixed                                                                                                                            
     - setting AFL_LLVM_LAF_SPLIT_FLOATS now activates                                                                                                                                       
     - support for -E and -shared compilation runs                                                                                                                                           
  - added honggfuzz mangle as a custom mutator in custom_mutators/honggfuzz                                                                                                                  
  - added afl-frida gum solution to examples/afl_frida (mostly imported                                                                                                                      
  - small fixes to afl-plot, afl-whatsup and man page creation                                                                                                                               
  - new README, added FAQ                                                                                                                                                                    

Thu Jul  2 09:59:38 UTC 2020 - Marcus Meissner <>

- updated to 2.66c
  - renamed blacklist/whitelist to ignorelist/instrumentlist ->
  - warn on deprecated environment variables
  - afl-fuzz:
     - -S secondary nodes now only sync from the main node to increase
       performance, the -M main node still syncs from everyone. Added checks
       that ensure exactly one main node is present and warn otherwise
     - Add -D after -S to force a secondary to perform deterministic fuzzing
     - If no main node is present at a sync one secondary node automatically
       becomes a temporary main node until a real main nodes shows up
     - Fixed a mayor performance issue we inherited from AFLfast
     - switched murmur2 hashing and random() for xxh3 and xoshiro256**,
       resulting in an up to 5.5% speed increase
     - Resizing the window does not crash afl-fuzz anymore
     - Ensure that the targets are killed on exit
     - fix/update to MOpt (thanks to arnow117)
     - added MOpt dictionary support from repo
     - added experimental SEEK power schedule. It is EXPLORE with ignoring
       the runtime and less focus on the length of the test case
  - llvm_mode:
    - the default instrumentation is now PCGUARD if the llvm version is >= 7,
      as it is faster and provides better coverage. The original afl
      instrumentation can be set via AFL_LLVM_INSTRUMENT=AFL. This is
      automatically done when the instrument_file list feature is used. 
    - PCGUARD mode is now even better because we made it collision free - plus
      it has a fixed map size, so it is also faster! :)
    - some targets want a ld variant for LD that is not gcc/clang but ld,
      added afl-ld-lto to solve this
    - lowered minimum required llvm version to 3.4 (except LLVMInsTrim, which
      needs 3.8.0)
    - instrument_file list feature now supports wildcards (thanks to sirmc)
    - small change to cmplog to make it work with current llvm 11-dev
    - added AFL_LLVM_LAF_ALL, sets all laf-intel settings
    - LTO instrument_files functionality rewritten, now main, _init etc functions
      need not to be listed anymore
    - fixed crash in compare-transform-pass when strcasecmp/strncasecmp was
      tried to be instrumented with LTO
    - fixed crash in cmplog with LTO
    - enable snapshot lkm also for persistent mode
  - Unicornafl
    - Added powerPC support from unicorn/next
    - rust bindings!
  - CMPLOG/Redqueen now also works for MMAP sharedmem
  - ensure shmem is released on errors
  - we moved radamsa to be a custom mutator in ./custom_mutators/. It is not
    compiled by default anymore.
  - allow running in /tmp (only unsafe with umask 0)
  - persistent mode shared memory testcase handover (instead of via
    files/stdin) - 10-100% performance increase
  - General support for 64 bit PowerPC, RiscV, Sparc etc.
  - fix afl-cmin.bash
  - slightly better performance compilation options for afl++ and targets
  - fixed afl-gcc/afl-as that could break on fast systems reusing pids in
    the same second
  - added lots of dictionaries from oss-fuzz, go-fuzz and Jakub Wilk
  - added former post_library examples to examples/custom_mutators/
  - Dockerfile upgraded to Ubuntu 20.04 Focal and installing llvm 11 and
    gcc 10 so afl-clang-lto can be build

Fri May 15 09:24:47 UTC 2020 - Marcus Meissner <>

- updated to 2.65c
  - afl-fuzz:
     - AFL_MAP_SIZE was not working correctly
     - better python detection
     - an old, old bug in afl that would show negative stability in rare
       circumstances is now hopefully fixed
       instead (see docs/
  - llvm_mode:
     - afl-clang-fast/lto now do not skip single block functions. This
       behaviour can be reactivated with AFL_LLVM_SKIPSINGLEBLOCK
     - if LLVM 11 is installed the posix shm_open+mmap is used and a fixed
       address for the shared memory map is used as this increases the
       fuzzing speed
     - InsTrim now has an LTO version! :-) That is the best and fastest mode!
     - fixes to LTO mode if instrumented edges > MAP_SIZE
     - CTX and NGRAM can now be used together
     - CTX and NGRAM are now also supported in CFG/INSTRIM mode
     - AFL_LLVM_LAF_TRANSFORM_COMPARES could crash, fixed
     - added AFL_LLVM_SKIP_NEVERZERO to skip the never zero coverage counter
       implementation. For targets with few or no loops or heavily called
       functions. Gives a small performance boost.
  - qemu_mode:
    - add information on PIE/PIC load addresses for 32 bit
    - better dependency checks
  - gcc_plugin:
    - better dependency checks
  - unicorn_mode:
    - validate_crash_callback can now count non-crashing inputs as crash as well
    - better submodule handling
  - afl-showmap: fix for -Q mode
  - added examples/afl_network_proxy which allows to fuzz a target over the
    network (not fuzzing tcp/ip services but running afl-fuzz on one system
    and the target being on an embedded device)
  - added examples/afl_untracer which does a binary-only fuzzing with the
    modifications done in memory (intel32/64 and aarch64 support)
  - added examples/afl_proxy which can be easily used to fuzz and instrument
    non-standard things
  - all:
    - forkserver communication now also used for error reporting
    - fix 32 bit build options
    - make clean now leaves qemu-3.1.1.tar.xz and the unicornafl directory
      intact if in a git/svn checkout - unless "deepclean" is used

Sat Apr 18 07:05:42 UTC 2020 - Marcus Meissner <>

- updated to 2.64c
  - llvm_mode LTO mode:
    - now requires llvm11 - but compiles all targets! :)
    - autodictionary feature added, enable with `AFL_LLVM_LTO_AUTODICTIONARY`
    - variable map size usage
  - afl-fuzz:
    - variable map size support added (only LTO mode can use this)
    - snapshot feature usage now visible in UI
    - Now setting `-L -1` will enable MOpt in parallel to normal mutation.
      Additionally, this allows to run dictionaries, radamsa and cmplog.
    - fix for cmplog/redqueen mode if stdin was used
    - fix for writing a better plot_data file
  - qemu_mode: fix for persistent mode (which would not terminate or get stuck)
  - compare-transform/AFL_LLVM_LAF_TRANSFORM_COMPARES now transforms also
    static global and local variable comparisons (cannot find all though)
  - extended forkserver: map_size and more information is communicated to
    afl-fuzz (and afl-fuzz acts accordingly)
  - new environment variable: AFL_MAP_SIZE to specify the size of the shared map
  - if AFL_CC/AFL_CXX is set but empty afl compilers did fail, fixed
    (this bug is in vanilla afl too)
  - added NO_PYTHON flag to disable python support when building afl-fuzz
  - more refactoring

Sun Apr 12 11:04:35 UTC 2020 - Marcus Meissner <>

- updated to 2.63c
  - all:
    - big code changes to make afl-fuzz thread-safe so afl-fuzz can spawn
      multiple fuzzing threads in the future or even become a library
    - afl basic tools now report on the environment variables picked up
    - more tools get environment variable usage info in the help output
    - force all output to stdout (some OK/SAY/WARN messages were sent to
      stdout, some to stderr)
    - uninstrumented mode uses an internal forkserver ("fauxserver")
    - now builds with `-D_FORTIFY_SOURCE=2`
    - drastically reduced number of (de)allocations during fuzzing
  - afl-fuzz:
    - python mutator modules and custom mutator modules now use the same
      interface and hence the API changed
    - AFL_AUTORESUME will resume execution without the need to specify `-i -`
    - added experimental power schedules (-p):
      - mmopt: ignores runtime of queue entries, gives higher weighting to
               the last 5 queue entries
      - rare: puts focus on queue entries that hits rare branches, also ignores
  - llvm_mode: 
    - added SNAPSHOT feature (using
    - added Control Flow Integrity sanitizer (AFL_USE_CFISAN)
    - added AFL_LLVM_INSTRUMENT option to control the instrumentation type
      easier: DEFAULT, CFG (INSTRIM), LTO, CTX, NGRAM-x (x=2-16)
    - made USE_TRACE_PC compile obsolete
  - LTO collision free instrumented added in llvm_mode with afl-clang-lto -
    note that this mode is amazing, but quite some targets won't compile
  - Added llvm_mode NGRAM prev_loc coverage by Adrean Herrera
    (, activate by setting
  - Added llvm_mode context sensitive branch coverage, activated by setting
  - llvm_mode InsTrim mode:
    - removed workaround for bug where paths were not instrumented and
      imported fix by author
    - made skipping 1 block functions an option and is disabled by default,
      set AFL_LLVM_INSTRIM_SKIPSINGLEBLOCK=1 to re-enable this
  - qemu_mode:
    - qemu_mode now uses solely the internal capstone version to fix builds
      on modern Linux distributions
    - QEMU now logs routine arguments for CmpLog when the target is x86
  - afl-tmin:
    - now supports hang mode `-H` to minimize hangs
    - fixed potential afl-tmin missbehavior for targets with multiple hangs
  - Pressing Control-c in afl-cmin did not terminate it for some OS
  - the custom API was rewritten and is now the same for Python and shared
- afl-1.58b-fix-paths.patch moved to
- afl-2.63c-fix-paths.patch: adjust Makefile -> GNUmakefile

Fri Feb 28 14:09:26 UTC 2020 - Marcus Meissner <>

- updated to 2.62c
  - Important fix for memory allocation functions that result in afl-fuzz not identifying crashes - UPDATE!
  - Small fix for -E/-V to release the CPU
  - CmpLog does not need sancov anymore

Tue Feb 25 12:04:22 UTC 2020 - Marcus Meissner <>

- updated to 2.61c
  - use -march=native if available                                                                                                                                                           
  - most tools now check for mistyped environment variables                                                                                                                                  
  - gcc 10 is now supported                                                                                                                                                                  
  - the memory safety checks are now disabled for a little more speed during                                                                                                                 
    fuzzing (only affects creating queue entries), can be toggled in config.h                                                                                                                
  - afl-fuzz:                                                                                                                                                                                
     - MOpt out of bounds writing crash fixed                                                                                                                                                
     - now prints the real python version support compiled in                                                                                                                                
     - set stronger performance compile options and little tweaks                                                                                                                            
     - Android: prefer bigcores when selecting a CPU                                                                                                                                         
     - CmpLog forkserver                                                                                                                                                                     
     - Redqueen input-2-state mutator (cmp instructions only ATM)                                                                                                                            
     - all Python 2+3 versions supported now                                                                                                                                                 
     - changed execs_per_sec in fuzzer_stats from "current" execs per second                                                                                                                 
       (which is pointless) to total execs per second                                                                                                                                        
     - bugfix for dictionary insert stage count (fix via Google repo PR)                                                                                                                     
     - added warning if -M is used together with custom mutators with _ONLY option                                                                                                           
     - AFL_TMPDIR checks are now later and better explained if they fail                                                                                                                     
  - llvm_mode                                                                                                                                                                                
     - InsTrim: three bug fixes:                                                                                                                                                             
        1. (minor) no pointless instrumentation of 1 block functions                                                                                                                         
        2. (medium) path bug that leads a few blocks not instrumented that                                                                                                                   
           should be                                                                                                                                                                         
        3. (major) incorrect prev_loc was written, fixed!                                                                                                                                    
  - afl-clang-fast:                                                                                                                                                                          
     - show in the help output for which llvm version it was compiled for                                                                                                                    
     - now does not need to be recompiled between trace-pc and pass                                                                                                                          
       instrumentation. compile normally and set AFL_LLVM_USE_TRACE_PC :)                                                                                                                    
     - LLVM 11 is supported                                                                                                                                                                  
     - CmpLog instrumentation using SanCov (see llvm_mode/README.cmplog)                                                                                                                     
  - afl-gcc, afl-clang-fast, afl-gcc-fast:                                                                                                                                                   
     - experimental support for undefined behaviour sanitizer UBSAN                                                                                                                          
       (set AFL_USE_UBSAN=1)                                                                                                                                                                 
     - the instrumentation summary output now also lists activated sanitizers                                                                                                                
     - afl-as: added isatty(2) check back in                                                                                                                                                 
     - added AFL_DEBUG (for upcoming merge)                                                                                                                                                  
  - qemu_mode:                                                                                                                                                                               
     - persistent mode is now also available for arm and aarch64                                                                                                                             
     - CmpLog instrumentation for QEMU (-c afl-fuzz command line option)                                                                                                                     
       for x86, x86_64, arm and aarch64                                                                                                                                                      
     - AFL_PERSISTENT_HOOK callback module for persistent QEMU                                                                                                                               
       (see examples/qemu_persistent_hook)                                                                                                                                                   
     - added qemu_mode/ documentation                                                                                                                                    
     - AFL_ENTRYPOINT noew has instruction granularity                                                                                                                                       
  - afl-cmin is now a sh script (invoking awk) instead of bash for portability                                                                                                               
    the original script is still present as afl-cmin.bash                                                                                                                                    
  - afl-showmap: -i dir option now allows processing multiple inputs using the                                                                                                               
     forkserver. This is for enhanced speed in afl-cmin.                                                                                                                                     
  - added blacklist and whitelisting function check in all modules of llvm_mode                                                                                                              
  - added fix from Debian project to compile libdislocator and libtokencap                                                                                                                   
  - libdislocator: AFL_ALIGNED_ALLOC to force size alignment to max_align_t                                                                                                                  

Sun Feb  9 16:12:14 UTC 2020 - Marcus Meissner <>

- added radamsa mutator

Thu Jan  2 08:31:09 UTC 2020 - Marcus Meissner <>

- updated to 2.60c
  - fixed a critical bug in afl-tmin that was introduced during ++2.53d
  - added test cases for afl-cmin and afl-tmin to test/
  - added ./experimental/argv_fuzzing ld_preload library by Kjell Braden
  - added preeny's desock_dup ld_preload library as
    ./experimental/socket_fuzzing for network fuzzing
  - added AFL_AS_FORCE_INSTRUMENT environment variable for afl-as - this is
    for the retrorewrite project
  - we now set QEMU_SET_ENV from AFL_PRELOAD when qemu_mode is used

Fri Dec 27 16:01:06 UTC 2019 - Marcus Meissner <>

- updated to 2.59c
  - qbdi_mode: fuzz android native libraries via QBDI framework
  - unicorn_mode: switched to the new unicornafl, thanks domenukk
  - afl-fuzz:
     - added radamsa as (an optional) mutator stage (-R[R])
     - added -u command line option to not unlink the fuzz input file
     - Python3 support (autodetect)
     - AFL_DISABLE_TRIM env var to disable the trim stage
     - CPU affinity support for DragonFly
  - llvm_mode:
     - float splitting is now configured via AFL_LLVM_LAF_SPLIT_FLOATS
     - support for llvm 10 included now (thanks to devnexen)
  - libtokencap:
     - support for *BSD/OSX/Dragonfly added
     - hook common *cmp functions from widely used libraries
  - compcov:
     - hook common *cmp functions from widely used libraries
     - floating point splitting support for QEMU on x86 targets
  - qemu_mode: AFL_QEMU_DISABLE_CACHE env to disable QEMU TranslationBlocks caching
  - afl-analyze: added AFL_SKIP_BIN_CHECK support
  - better random numbers for gcc_plugin and llvm_mode (thanks to devnexen)
  - Dockerfile by courtesy of devnexen
  - added regex.dictionary
  - qemu and unicorn download scripts now try to download until the full
    download succeeded. f*ckin travis fails downloading 40% of the time!
  - more support for Android (please test!)
  - added the few Android stuff we didnt have already from Google afl repository
  - removed unnecessary warnings

Sat Nov  9 16:05:04 UTC 2019 - Marcus Meissner <>

- updated to 2.58c
  - reverted patch to not unlink and recreate the input file, it resulted in performance loss of ~10%
  - added test/ script
  - (re)added gcc_plugin, fast inline instrumentation is not yet finished, however it includes the whitelisting and persistance feature! by hexcoder-
  - gcc_plugin tests added to testing framework
- jump to 2.57 instead of 2.55 to catch up with Google's versioning
  - persistent mode for QEMU (see qemu_mode/
  - custom mutator library is now an additional mutator, to exclusivly use it
  - add AFL_CUSTOM_MUTATOR_ONLY (that will trigger the previous behaviour)
  - new library qemu_mode/unsigaction which filters sigaction events
  - afl-fuzz: new command line option -I to execute a command on a new crash
  - no more unlinking the input file, this way the input file can also be a
  - FIFO or disk partition
  - setting LLVM_CONFIG for llvm_mode will now again switch to the selected
  - llvm version. If your setup is correct.
  - fuzzing strategy yields for custom mutator were missing from the UI, added them :)
  - added "make tests" which will perform checks to see that all functionality
  - is working as expected. this is currently the starting point, its not complete :)
  - added mutation documentation feature ("make document"), creates afl-fuzz-document
  - and saves all mutations of the first run on the first file into out/queue/mutations
  - libtokencap and libdislocator now compile to the afl_root directory and are
  - installed to the .../lib/afl directory when present during make install
  - more BSD support, e.g. free CPU binding code for FreeBSD (thanks to devnexen)
  - reducing duplicate code in afl-fuzz
  - added "make help"
  - removed compile warnings from python internal stuff
  - added man page for afl-clang-fast[++]
  - updated documentation
  - Wine mode to run Win32 binaries with the QEMU instrumentation (-W)
  - CompareCoverage for ARM target in QEMU/Unicorn
- 2.54c:
  - big code refactoring:
  -     all includes are now in include/
  -     all afl sources are now in src/ - see src/README.src
  -     afl-fuzz was splitted up in various individual files for including
  -     functionality in other programs (e.g. forkserver, memory map, etc.)
  -     for better readability.
  -     new code indention everywhere
  - auto-generating man pages for all (main) tools
  - added AFL_FORCE_UI to show the UI even if the terminal is not detected
  - llvm 9 is now supported (still needs testing)
  - Android is now supported (thank to JoeyJiao!) - still need to modify the Makefile though
  - fix building qemu on some Ubuntus (thanks to floyd!)
  - custom mutator by a loaded library is now supported (thanks to kyakdan!)
  - added PR that includes peak_rss_mb and slowest_exec_ms in the fuzzer_stats report
  - more support for *BSD (thanks to devnexen!)
  - fix building on *BSD (thanks to tobias.kortkamp for the patch)
  - fix for a few features to support different map sized than 2^16
  - afl-showmap: new option -r now shows the real values in the buckets (stock
  - afl never did), plus shows tuple content summary information now
  - small docu updates
  - NeverZero counters for QEMU
  - NeverZero counters for Unicorn
  - CompareCoverage Unicorn
  - immediates-only instrumentation for CompareCoverage
- 2.53c release
  - imported the few minor changes from the 2.53b release
  - unicorn_mode got added - thanks to domenukk for the patch!
  - fix llvm_mode AFL_TRACE_PC with modern llvm
  - fix a crash in qemu_mode which also exists in stock afl
  - added libcompcov, a laf-intel implementation for qemu! :) see qemu_mode/libcompcov/README.libcompcov
  - updated afl-fuzz and afl-system-config for new scaling governor location in modern kernels
  - all queue, hang and crash files now have their discovery time in their name
  - if llvm_mode was compiled, afl-clang/afl-clang++ will point to these instead of afl-gcc
  - added instrim, a much faster llvm_mode instrumentation at the cost of path discovery. See llvm_mode/README.instrim (
  - added MOpt ( mode, see docs/README.MOpt
  - added code to make it more portable to other platforms than Intel Linux
  - added never zero counters for afl-gcc and optionally (because of an optimization issue in llvm < 9) for llvm_mode (AFL_LLVM_NEVER_ZERO=1)
  - added a new doc about binary only fuzzing: docs/binaryonly_fuzzing.txt
  - more cpu power for afl-system-config
  - added forkserver patch to afl-tmin, makes it much faster (originally from
  - added whitelist support for llvm_mode via AFL_LLVM_WHITELIST to allow only to instrument what is actually interesting. Gives more speed and less map pollution (originally by choller@mozilla)
  - added Python Module mutator support, python2.7-dev is autodetected. see docs/python_mutators.txt (originally by choller@mozilla)
  - added AFL_CAL_FAST for slow applications and AFL_DEBUG_CHILD_OUTPUT for debugging
  - added -V time and -E execs option to better comparison runs, runs afl-fuzz for a specific time/executions.
  - added a -s seed switch to allow afl run with a fixed initial seed that is not updated. This is good for performance and path discovery tests as the random numbers are deterministic then

Thu Oct 17 12:58:02 UTC 2019 - Richard Brown <>

- Remove obsolete Groups tag (fate#326485)

Sun Jun 23 17:44:06 UTC 2019 - Marcus Meissner <>

- updated to afl++ 2.52c version, community fork. It integrates 
  various community patches.
  - community patches to make llvm_mode and qemu_mode faster, plus new features and bugfixes
  - qemu upgraded to 3.1
  - aflfast powerschedules added
  - llvm_mode now supports llvm up to version 8

Thu Aug 30 15:03:49 UTC 2018 - Guillaume GARDET <>

- Fix build on non X86* platforms

Sun Nov  5 07:57:53 UTC 2017 -

- Update to version 2.52b:
  * Upgraded QEMU patches from 2.3.0 to 2.10.0. Required troubleshooting
    several weird issues.
  * Added setsid to afl-showmap. See the notes for 2.51b.
  * Added target mode (deferred, persistent, qemu, etc) to fuzzer_stats.
  * afl-tmin should now save a partially minimized file when Ctrl-C
    is pressed.
  * Added an option for afl-analyze to dump offsets in hex.
  * Added support for parameters in

Sun Sep  3 12:08:41 UTC 2017 -

- afl 2.51b:
  * Make afl-tmin call setsid to prevent glibc traceback junk from
    showing up on the terminal
- includes changes form 2.50b:
  * Fix a timing corner case
  * Address a libtokencap / pthreads incompatibility issue
  * In-place resume now preserves .synced

Sat Jul 29 23:04:43 UTC 2017 -

- include docs/README

Wed Jul 26 06:47:03 UTC 2017 -

- Version 2.49b
  - Added AFL_TMIN_EXACT to allow path constraint for crash minimization.
  - Added dates for releases (retroactively for all of 2017).
- Version 2.48b
  - Added AFL_ALLOW_TMP to permit some scripts to run in /tmp.
  - Fixed cwd handling in afl-analyze (similar to the quirk in afl-tmin).
  - Made it possible to point -o and -f to the same file in afl-tmin.
- Version 2.47b
  - Fixed cwd handling in afl-tmin. Spotted by Jakub Wilk.
- Version 2.46b
  - libdislocator now supports AFL_LD_NO_CALLOC_OVER for folks who do not
    want to abort on calloc() overflows.
  - Made a minor fix to libtokencap. Reported by Daniel Stender.
  - Added a small JSON dictionary, inspired on a dictionary done by Jakub Wilk.

Fri Jul  7 14:59:31 UTC 2017 -

- update to 2.45b:
  - Added strstr, strcasestr support to libtokencap. Contributed by
    Daniel Hodson.
  - Fixed a resumption offset glitch spotted by Jakub Wilk.
  - There are definitely no bugs in afl-showmap -c now.

Mon Jul  3 08:08:58 UTC 2017 -

- update to 2.44b:
  * Add visual indicator of ASAN / MSAN mode when compiling
  * Add support for afl-showmap coredumps (-c)
  * Add LD_BIND_NOW=1 for afl-showmap by default
  * Added AFL_NO_ARITH to aid in the fuzzing of text-based formats
  * Renamed the R() macro to avoid a problem with llvm_mode in the
    latest versions of LLVM

Wed Apr 12 06:25:50 UTC 2017 -

- update to 2.41b:
  - Addressed a major user complaint related to timeout detection. Timing out
    inputs are now binned as "hangs" only if they exceed a far more generous
    time limit than the one used to reject slow paths.
- update to 2.40b:
  - Fixed a minor oversight in the insertion strategy for dictionary words.
    Spotted by Andrzej Jackowski.
  - Made a small improvement to the havoc block insertion strategy.
  - Adjusted color rules for "is it done yet?" indicators.

Wed Mar  8 20:52:05 UTC 2017 -

- Changed %doc line, to clear buildfailure in openSUSE:Factory
  Due to unpackaged files

Fri Feb 10 12:09:01 UTC 2017 -

- update to 2.39b:
  - Improved error reporting in afl-cmin. Suggested by floyd.
  - Made a minor tweak to trace-pc-guard support. Suggested by kcc.
  - Added a mention of afl-monitor.

Mon Jan 30 14:21:37 UTC 2017 -

- update to  2.38b:
  * Added -mllvm -sanitizer-coverage-block-threshold=0 to
    trace-pc-guard mode
  * Fixed a cosmetic bad free() bug when aborting -S sessions
  * Made a small change to afl-whatsup to sort fuzzers by name.
  * Fixed a minor issue with malloc(0) in libdislocator
  * Changed the clobber pattern in libdislocator to a slightly more
    reliable one
  * Added a note about THP performance
  * Added a somewhat unofficial support for running afl-tmin with a
    baseline "mask" that causes it to minimize only for edges that
    are unique to the input file, but not to the "boring" baseline.
  * "Fixed" a getPassName() problem with never versions of clang.

Wed Oct 19 20:05:42 UTC 2016 -

- Update to version 2.35b:
  * Fixed a minor cmdline reporting glitch, spotted by Leo Barnes.
  * Fixed a silly bug in libdislocator. Spotted by Johannes Schultz.
- Changes for version 2.34b:
  * Added a note about afl-tmin to technical_details.txt.
  * Added support for AFL_NO_UI, as suggested by Leo Barnes.
- Changes for version 2.33b:
  * Added code to strip -Wl,-z,defs and -Wl,--no-undefined for
    fl-clang-fast, since they interfere with -shared. Spotted and
    iagnosed by Toby Hutton.
  * Added some fuzzing tips for Android.

Thu Aug 25 12:45:55 UTC 2016 -

- Version 2.32b:
  - Added a check for AFL_HARDEN combined with AFL_USE_*SAN. Suggested by Hanno Boeck.
  - Made several other cosmetic adjustments to cycle timing in the wake of the big tweak made in 2.31b.

- Version 2.31b:
  - Changed havoc cycle counts for a marked performance boost, especially
    with -S / -d. See the discussion of FidgetyAFL in:!topic/afl-users/fOPeb62FZUg

    While this does not implement the approach proposed by the authors of
    the CCS paper, the solution is a result of digging into that research;
    more improvements may follow as I do more experiments and get more
    definitive data.
- Version 2.30b:
  - Made minor improvements to persistent mode to avoid the remote
    possibility of "no instrumentation detected" issues with very low
    instrumentation densities.
  - Fixed a minor glitch with a leftover process in persistent mode.
    Reported by Jakub Wilk and Daniel Stender.
  - Made persistent mode bitmaps a bit more consistent and adjusted the way
    this is shown in the UI, especially in persistent mode.

- Version 2.29b:
  - Made a minor #include fix to llvm_mode. Suggested by Jonathan Metzman.
  - Made cosmetic updates to the docs.
- Version 2.28b:
  - Added "life pro tips" to docs/.
  - Moved testcases/_extras/ to dictionaries/ for visibility.
  - Made minor improvements to install scripts.
  - Added an important safety tip.
- Version 2.27b:
  - Added libtokencap, a simple feature to intercept strcmp / memcmp and
    generate dictionary entries that can help extend coverage.
  - Moved libdislocator to its own dir, added README.
  - The demo in experimental/instrumented_cmp is no more.
- Version 2.26b:
  - Made a fix for to compile on MacOS X.
  - Added support for DYLD_INSERT_LIBRARIES.
- Version 2.25b:
  - Made some cosmetic updates to, renamed one env
- Version 2.24b:
  - Added, an experimental, abusive allocator. Try
    it out with AFL_LD_PRELOAD=/path/to/ when running
- Version 2.23b:
  - Improved the stability metric for persistent mode binaries. Problem
    spotted by Kurt Roeckx.
  - Made a related improvement that may bring the metric to 100% for those
- Version 2.22b:
  - Mentioned the potential conflicts between MSAN / ASAN and FORTIFY_SOURCE.
    There is no automated check for this, since some distros may implicitly
    set FORTIFY_SOURCE outside of the compiler's argv[].
  - Populated the support for AFL_LD_PRELOAD to all companion tools.
  - Made a change to the handling of ./afl-clang-fast -v. Spotted by
    Jan Kneschke.

Sat Jul 23 19:10:30 UTC 2016 -

- afl 2.21b:
  * Minor UI fixes
- includes changes from 2.20b:
  * Revamp handling of variable paths
  * Stablility improvements
  * Include current input bitmap density in UI
  * Add experimental support for parallelizing -M.
- includes changes from 2.19b:
  * Ensure auto CPU binding happens at non-overlapping times
- includes changes from 2.18b
  * Performance improvements

Tue Jun 28 06:26:03 UTC 2016 -

- afl 2.17b:
  * Remove error-prone and manual -Z option
  * automatically bind to the first free core

Wed Jun 15 18:26:54 UTC 2016 -

- afl 2.14b:
    defined when compiling with afl-gcc and friends
  - Refreshed some of the non-x86 docs.

Tue May 31 11:18:02 UTC 2016 -

- afl 2.13b:
  * Fixed a spurious build test error with trace-pc and
  * Fixed a cosmetic issue with afl-whatsup
- includes changes from 2.12b
  * Fixed a minor issue in afl-tmin that can make alphabet
    minimization less efficient during passes > 1

Mon May  2 11:02:02 UTC 2016 -

- afl 2.11b:
  - Fixed a minor typo in instrumented_cmp
  - Added a missing size check for deterministic insertion steps.
  - Made an improvement to afl-gotcpu when -Z not used.
  - Fixed a typo in in experimental/

Sat Apr 16 15:12:46 UTC 2016 -

- afl 2.10b:
  * Fix a minor core counting glitch

Mon Mar 28 19:11:03 UTC 2016 -

- Update to 2.09b
  * Made several documentation updates.
  * Added some visual indicators to promote and simplify the use 
    of -Z.
- Changes for 2.08b
  * Added explicit support for -m32 and -m64 for llvm_mode. 
    Inspired by a request from Christian Holler.
  * Added a new benchmarking option, as requested by Kostya 
- Changes for 2.07b
  * Added CPU affinity option (-Z) on Linux. With some caution, 
    this can offer a significant (10%+) performance bump and 
    reduce jitter. Proposed by Austin Seipp.
  * Updated afl-gotcpu to use CPU affinity where supported.
  * Fixed confusing CPU_TARGET error messages with QEMU build.
    Spotted by Daniel Komaromy and others.
- Changes for 2.06b
  * Worked around LLVM persistent mode hiccups with -shared code.
    Contributed by Christian Holler.
  * Added __AFL_COMPILER as a convenient way to detect that 
    something is built under afl-gcc / afl-clang / afl-clang-fast 
    and enable custom optimizations in your code. Suggested by 
    Pedro Corte-Real.
  * Upstreamed several minor changes developed by Franjo Ivancic to
    allow AFL to be built as a library. This is fairly use-specific
    and may have relatively little appeal to general audiences.

Sun Feb 28 13:59:04 UTC 2016 -

- afl 2.05b:
  * Put __sanitizer_cov_module_init & co behind #ifdef to avoid
    problems with ASAN.

Wed Feb 24 21:52:33 UTC 2016 -

- afl 2.04b:
  * remove indirect-calls coverage from -fsanitize-coverage
  * LLVM: Added experimental -fsanitize-coverage=trace-pc support
  - LLVM: better support non-standard map sizes
  - LLVM: use thread-local execution tracing
  - Force-disabled symbolization for ASAN
  - Added AFL_LD_PRELOAD to allow LD_PRELOAD to be set for targets
    without affecting AFL itself
  - Fixed a "lcamtuf can't count to 16" bug in the havoc stage.

Tue Feb 16 15:37:01 UTC 2016 -

- afl 2.01b:
  - updates to color handling
  - Fixed an installation issue with afl-as

Thu Feb 11 12:21:39 UTC 2016 -

- afl 1.99b:
  - Revamp the output and the internal logic of afl-analyze.
  - Clean up color handling code
  - added support for background colors.

Wed Feb 10 20:25:47 UTC 2016 -

- afl 1.98b:
  - new tool afl-analyze

Sat Dec 19 15:45:22 UTC 2015 -

- Update to 1.96b
  * Added -fpic to CFLAGS for the clang plugin, as suggested by 
		Hanno Boeck.
  * Made another clang change (IRBuilder) suggested by Jeff Trull.
  * Fixed several typos, spotted by Jakub Wilk.
  * Added support for AFL_SHUFFLE_QUEUE, based on discussions with
    Christian Holler.

Fri Nov 13 09:06:47 UTC 2015 -

- afl 1.95b:
  * Fixed a harmless bug when handling -B
  * Made the exit message a bit more accurate when
    AFL_EXIT_WHEN_DONE is set.
  * Added some error-checking for old-style forkserver syntax.
  * Switched from exit() to _exit() in injected code to avoid
    snafus with destructors in C++ code.
  * Made a change to avoid spuriously setting __AFL_SHM_ID when
    AFL_DUMB_FORKSRV is set in conjunction with -n.

Fri Oct  2 15:11:23 UTC 2015 -

- afl 1.94b:
  * Changed allocator alignment to improve support for non-x86 systems
    (now that llvm_mode makes this more feasible).
  * Fixed an obscure bug that would affect people trying to use afl-gcc
    with $TMP set but $TMPDIR absent.

Mon Sep  7 13:22:07 UTC 2015 -

- afl 1.92b:
  * C++ fix (namespaces)

Thu Sep  3 14:32:09 UTC 2015 -

- afl 1.91b:
  * C++ instrumentation fixes
- includes changes from 1.90b:
  * documentation updates
  * Fixed a potential problem with deferred mode signatures getting
    optimized out by the linker (with --gc-sections).

Wed Sep  2 07:57:31 UTC 2015 -

- afl 1.89b:
  * Revamped the support for persistent and deferred forkserver
    modes. Both now feature simpler syntax and do not require
    companion env variables.
  * Added a bit more info about afl-showmap.

Sun Aug 30 23:40:19 UTC 2015 -

- afl 1.88b:
  * Make AFL_EXIT_WHEN_DONE work in non-tty mode. 

Thu Aug 27 14:32:46 UTC 2015 -

- afl 1.87b:
  * Add QuickStartGuide.txt and other documentation updates

Mon Aug 10 19:49:56 UTC 2015 -

- afl 1.86b:
  * Added support for AFL_SKIP_CRASHES
  * Removed the hard-fail terminal size check

Wed Aug  5 13:46:26 UTC 2015 -

- Update to 1.85b
  * Fixed a garbled sentence in notes on parallel fuzzing.
  * Fixed a minor glitch in afl-cmin.
- Changes for 1.84b
  * Made SIMPLE_FILES behave as expected when naming backup 
    directories for crashes and hangs.
  * Added the total number of favored paths to fuzzer_stats.
  * Made afl-tmin, afl-fuzz, and afl-cmin reject negative values 
    passed to -t and -m, since they generally won't work as 
  * Made a fix for no lahf / sahf support on older versions of 

Mon Jun 15 09:07:34 UTC 2015 -

- afl 1.83b:
  * fixes for platforms other than GNU/Linux

Sat Jun 13 10:41:30 UTC 2015 -

- afl 1.82b:
  * Fixed a harmless but annoying race condition in persistent mode
  * Updated persistent mode documentation
- afl 1.81b:
  * Added persistent mode for in-process fuzzing. 
  * in-place resume code to preserve crashes/README.txt.

Tue May 26 10:59:53 UTC 2015 -

- afl 1.80b:
  - Made afl-cmin tolerant of whitespaces in filenames
  - Added support for AFL_EXIT_WHEN_DONE

Mon May 25 07:43:23 UTC 2015 -

- afl 1.79b:
  - Added support for dictionary levels, see testcases/README.testcases.
  - Reworked the SQL dictionary to use levels.
  - Added a note about Preeny.

Tue May 19 07:26:27 UTC 2015 -

- builds for i586 x86_64 only

Mon May 18 17:12:36 UTC 2015 -

- afl 1.78b:
  - Added a dictionary for PDF
  - Added several references to afl-cov

Fri May  8 13:05:09 UTC 2015 -

- afl 1.77b:
  * additional fuzzing functionality
  * reduce number of duplicates
  * documentation updates  
  * qemu_mode with qemu 2.3.0

Mon Apr 27 08:45:05 UTC 2015 -

- afl 1.73b:
  - Fixed a bug in effector maps that could sometimes cause more
    fuzzing than necessary, or SEGV
- includes changes from 1.72b:
  - Fixed a glitch in non-x86 install
  - Added a minor safeguard to llvm_mode Makefile

Mon Apr 20 17:20:09 UTC 2015 -

- afl 1.71b:
  - Fix bug with installed copies of AFL trying to use QEMU mode.
  - Add last path / crash / hang times to fuzzer_stats
- with changes from 1.70b:
  - Modify resumption code to reuse the original timeout value when
    resuming a session if -t is not given. This prevents timeout
    creep in continuous fuzzing.
  - Add improved error messages for failed handshake when
  - slight improvement to llvm_mode/Makefile
  - Refresh several bits of documentation.

Thu Apr 16 07:19:18 UTC 2015 -

- afl 1.69b:
  - Added support for deferred initialization in LLVM mode.
- afl 1.68b:
  - Fixed a minor PRNG glitch that would make the first seconds of
    a fuzzing job deterministic.
  - Made tmp[] static in the LLVM runtime to keep Valgrind happy
  - Clarified the footnote in README.

Mon Apr 13 19:58:55 UTC 2015 -

- afl 1.67b:
  - One more correction to llvm_mode Makefile
- afl 1.66b:
  - Added CC / CXX support to llvm_mode Makefile
  - Fixed 'make clean' with gmake
  - Fixed 'make -j n clean all'
  - Removed build date and time from banners to give people deterministic
  - drop afl-1.46b-nodate.patch, thus obsoleted

Mon Apr 13 15:11:11 UTC 2015 -

- afl 1.65b:
  - Fixed a snafu with some leftover code in afl-clang-fast.
  - Corrected even moar typos.

Sun Apr 12 09:41:38 UTC 2015 -

- afl 1.64b:
  - improve compatibility with non-ELF platforms.
  - Fixed a problem with afl-clang-fast and -shared libraries.
  - Removed unnecessary instrumentation density adjustment for LLVM
- includes changes from 1.63b:
  - Updated cgroups_asan/
  - Fixed typos

Sat Apr 11 07:15:12 UTC 2015 -

- afl 1.62b:
  - Improved the handling of -x in afl-clang-fast,
  - Improved the handling of low AFL_INST_RATIO settings for QEMU and
    LLVM modes.
  - Fixed the llvm-config bug for good
- includes changes from 1.61b:
  - Fixed an obscure bug compiling OpenSSL with afl-clang-fast.
  - Fixed a 'make install' bug on non-x86 systems
  - Fixed a problem with half-broken llvm-config

Thu Apr  9 13:12:37 UTC 2015 -

- afl 1.60b:
  * Allowed experimental/llvm_instrumentation/ to graduate to llvm_mode/.
  * Removed experimental/arm_support/, since it's completely broken and likely
    unnecessary with LLVM support in place.
  * Added ASAN cgroups script to experimental/asan_cgroups/, updated existing
    docs. Courtesy Sam Hakim and David A. Wheeler.
  * Refactored afl-tmin to reduce the number of execs in common use cases.
    Ideas from Jonathan Neuschafer and Turo Lamminen.
  * Added a note about CLAs at the bottom of README.
  * Renamed testcases_readme.txt to README.testcases for some semblance of
  * Made assorted updates to docs.
- includes changes from 1.59b
  * Imported Laszlo Szekeres' experimental LLVM instrumentation into
    experimental/llvm_instrumentation. I'll work on including it in the 
    "mainstream" version soon.
- updates afl-1.46b-nodate.patch

Fri Mar 27 20:26:35 UTC 2015 -

- fix SLE 11 SP3 build, add afl-1.58b-fix-paths.patch

Fri Mar 27 14:40:09 UTC 2015 -

- afl 1.58b:
  * Added a workaround for abort() behavior in -lpthread programs in
    QEMU mode.
  * Made several documentation updates, including links to the
    static instrumentation tool (sister_projects.txt).
- use libexecdir

Tue Mar 24 15:58:08 UTC 2015 -

- updated to 1.57b

Mon Feb 16 12:53:36 UTC 2015 -

- initial package

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