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configurable testcache with malloc (#581)

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* cache item number to cache memory size

* reload testcase if trimming changed the size

* fix splicing selection

* slim splicing

* import sync fix

* write testcache stats to fuzzer_stats

* fix new seed selection algo

* malloc+read instead of mmap

* fix

* testcache is configurable now and no reference counts

* fixes compilation, test script

* fixes

* switch TEST_CC to afl-cc in makefile

* code format

* fix

* fix crash

* fix crash

* fix env help output

* remove unnecessary pointer resets

* fix endless loop bug

* actually use the cache if set

* one more fix

* increase default cache entries, add default cache size value to config.h

Co-authored-by: hexcoder- <heiko@hexco.de>
This commit is contained in:
van Hauser
2020-10-14 15:30:30 +02:00
committed by GitHub
parent c20ba2c2c5
commit 56ac3fcdc5
13 changed files with 276 additions and 163 deletions
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8
src/afl-fuzz-state.c
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@ -103,6 +103,7 @@ void afl_state_init(afl_state_t *afl, uint32_t map_size) {
afl->stats_avg_exec = -1;
afl->skip_deterministic = 1;
afl->use_splicing = 1;
afl->q_testcase_max_cache_size = TESTCASE_CACHE * 1024000;
#ifdef HAVE_AFFINITY
afl->cpu_aff = -1; /* Selected CPU core */
@ -353,6 +354,13 @@ void read_afl_environment(afl_state_t *afl, char **envp) {
afl->afl_env.afl_forksrv_init_tmout =
(u8 *)get_afl_env(afl_environment_variables[i]);
} else if (!strncmp(env, "AFL_TESTCACHE_SIZE",
afl_environment_variable_len)) {
afl->afl_env.afl_testcache_size =
(u8 *)get_afl_env(afl_environment_variables[i]);
} else if (!strncmp(env, "AFL_STATSD_HOST",
afl_environment_variable_len)) {