disable trimming for -M

README.md

@@ -55,6 +55,7 @@ behaviours and defaults:
     * a caching of testcases can now be performed and can be modified by
       editing config.h for TESTCASE_CACHE or by specifying the env variable
       `AFL_TESTCACHE_SIZE` (in MB). Good values are between 50-500 (default: 50).
+    * -M mains do not perform trimming
   * examples/ got renamed to utils/
   * libtokencap/ libdislocator/ and qdbi_mode/ were moved to utils/
   * afl-cmin/afl-cmin.bash now search first in PATH and last in AFL_PATH

docs/ideas.md

@@ -16,6 +16,8 @@ test cases executed.
 It should be clickable which value is X and Y axis, zoom factor, log scaling
 on-off, etc.
 
+Mentor: vanhauser-thc
+
 ## WASM Instrumentation
 
 Currently, AFL++ can be used for source code fuzzing and traditional binaries.
@@ -36,19 +38,6 @@ Either improve a single mutator thorugh learning of many different bugs
 
 Mentor: domenukk
 
-## Collision-free Binary-Only Maps
-
-AFL++ supports collison-free maps using an LTO (link-time-optimization) pass.
-This should be possible to implement for QEMU and Unicorn instrumentations.
-As the forkserver parent caches just in time translated translation blocks,
-adding a simple counter between jumps should be doable.
-
-Note: this is already in development for qemu by Andrea, so for people who
-want to contribute it might make more sense to port his solution to unicorn.
-
-Mentor: andreafioraldi or domenukk
-Issue/idea tracker: [https://github.com/AFLplusplus/AFLplusplus/issues/237](https://github.com/AFLplusplus/AFLplusplus/issues/237)
-
 ## Your idea!
 
 Finally, we are open to proposals!

src/afl-fuzz.c

@@ -145,7 +145,7 @@ static void usage(u8 *argv0, int more_help) {
 
       "Other stuff:\n"
       "  -M/-S id      - distributed mode (see docs/parallel_fuzzing.md)\n"
-      "                  -M auto-sets -D and -Z (use -d to disable -D)\n"
+      "                  -M auto-sets -D, -Z (use -d to disable -D) and no trimming\n"
       "  -F path       - sync to a foreign fuzzer queue directory (requires "
       "-M, can\n"
       "                  be specified up to %u times)\n"
@@ -502,6 +502,7 @@ int main(int argc, char **argv_orig, char **envp) {
         afl->sync_id = ck_strdup(optarg);
         afl->skip_deterministic = 0;  // force deterministic fuzzing
         afl->old_seed_selection = 1;  // force old queue walking seed selection
+        afl->disable_trim = 1;  // disable trimming
 
         if ((c = strchr(afl->sync_id, ':'))) {