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Merge pull request #2117 from AFLplusplus/dev
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‎README.md

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@@ -2,9 +2,9 @@
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<img align="right" src="https://raw.githubusercontent.com/AFLplusplus/Website/main/static/aflpp_bg.svg" alt="AFL++ logo" width="250" heigh="250">
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5-
Release version: [4.20c](https://github.com/AFLplusplus/AFLplusplus/releases)
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Release version: [4.21c](https://github.com/AFLplusplus/AFLplusplus/releases)
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GitHub version: 4.21a
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GitHub version: 4.21c
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Repository:
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[https://github.com/AFLplusplus/AFLplusplus](https://github.com/AFLplusplus/AFLplusplus)

‎TODO.md

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@@ -2,6 +2,8 @@
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## Must
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- fast restart of afl-fuzz if cmdline + target hash is the same
6+
- check for null ptr for xml/curl/g_ string transform functions
57
- hardened_usercopy=0 page_alloc.shuffle=0
68
- add value_profile but only enable after 15 minutes without finds
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- cmplog max items env?
@@ -11,7 +13,6 @@
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- afl-showmap -f support
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- afl-fuzz multicore wrapper script
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- when trimming then perform crash detection
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- cyclomatic complexity: 2 + calls + edges - blocks
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## Should

‎custom_mutators/grammar_mutator/GRAMMAR_VERSION

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@@ -1 +1 @@
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‎custom_mutators/grammar_mutator/grammar_mutator

‎docs/Changelog.md

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@@ -3,12 +3,16 @@
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This is the list of all noteworthy changes made in every public
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release of the tool. See README.md for the general instruction manual.
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6-
### Version ++4.21a (dev)
6+
### Version ++4.21c (release)
77
* afl-fuzz
88
- fixed a regression in afl-fuzz that resulted in a 5-10% performace loss
99
do a switch from gettimeofday() to clock_gettime() which should be rather
1010
three times faster. The reason for this is unknown.
11+
- new queue selection algorithm based on 2 core years of queue data
12+
analysis. gives a noticable improvement on coverage although the results
13+
seem counterintuitive :-)
1114
- added AFL_DISABLE_REDUNDANT for huge queues
15+
- added `AFL_NO_SYNC` environment variable that does what you think it does
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- fix AFL_PERSISTENT_RECORD
1317
- run custom_post_process after standard trimming
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- prevent filenames in the queue that have spaces
@@ -19,6 +23,9 @@
1923
- -V timing is now accurately the fuzz time (without syncing), before
2024
long calibration times and syncing could result in now fuzzing being
2125
made when the time was already run out until then, thanks to @eqv!
26+
- fix -n uninstrumented mode when ending fuzzing
27+
- enhanced the ASAN configuration
28+
- make afl-fuzz use less memory with cmplog and fix a memleak
2229
* afl-cc:
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- re-enable i386 support that was accidently disabled
2431
- fixes for LTO and outdated afl-gcc mode for i386
@@ -32,7 +39,8 @@
3239
* afl-showmap
3340
- fix memory leak on shmem testcase usage (thanks to @ndrewh)
3441
- minor fix to collect coverage -C (thanks to @bet4it)
35-
* enhanced the ASAN configuration
42+
* Fixed a shmem mmap bug (that rarely came up on MacOS)
43+
* libtokencap: script generate_libtoken_dict.sh added by @a-shvedov
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### Version ++4.20c (release)

‎docs/env_variables.md

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@@ -588,6 +588,9 @@ checks or alter some of the more exotic semantics of the tool:
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between fuzzing instances synchronization. Default sync time is 30 minutes,
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note that time is halved for -M main nodes.
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591+
- `AFL_NO_SYNC` disables any syncing whatsoever and takes priority on all
592+
other syncing parameters.
593+
591594
- Setting `AFL_TARGET_ENV` causes AFL++ to set extra environment variables for
592595
the target binary. Example: `AFL_TARGET_ENV="VAR1=1 VAR2='a b c'" afl-fuzz
593596
... `. This exists mostly for things like `LD_LIBRARY_PATH` but it would

‎frida_mode/src/instrument/instrument_x64_cache.c

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@@ -49,14 +49,23 @@ void instrument_cache_init(void) {
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5050
if (setrlimit(RLIMIT_AS, &data_limit) != 0) {
5151

52-
FFATAL("Failed to setrlimit: %d", errno);
52+
FWARNF("Failed to setrlimit: %d, you may need root or CAP_SYS_RESOURCE",
53+
errno);
5354

5455
}
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5657
map_base =
5758
gum_memory_allocate(NULL, instrument_cache_size, instrument_cache_size,
5859
GUM_PAGE_READ | GUM_PAGE_WRITE);
59-
if (map_base == MAP_FAILED) { FFATAL("Failed to map segment: %d", errno); }
60+
if (map_base == MAP_FAILED) {
61+
62+
FFATAL(
63+
"Failed to map segment: %d. This can be caused by failure to setrlimit."
64+
"Disabling or reducing the size of the allocation using "
65+
"AFL_FRIDA_INST_NO_CACHE or AFL_FRIDA_INST_CACHE_SIZE may help",
66+
errno);
67+
68+
}
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6170
FOKF(cBLU "Instrumentation" cRST " - " cGRN "cache addr:" cYEL " [0x%016lX]",
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GUM_ADDRESS(map_base));

‎frida_mode/src/ranges.c

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@@ -194,24 +194,23 @@ static gboolean print_ranges_callback(const GumRangeDetails *details,
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195195
if (details->file == NULL) {
196196

197-
FVERBOSE("\t0x%016" G_GINT64_MODIFIER "x-0x%016" G_GINT64_MODIFIER
198-
"X %c%c%c",
199-
details->range->base_address,
200-
details->range->base_address + details->range->size,
201-
details->protection & GUM_PAGE_READ ? 'R' : '-',
202-
details->protection & GUM_PAGE_WRITE ? 'W' : '-',
203-
details->protection & GUM_PAGE_EXECUTE ? 'X' : '-');
197+
OKF("\t0x%016" G_GINT64_MODIFIER "x-0x%016" G_GINT64_MODIFIER "X %c%c%c",
198+
details->range->base_address,
199+
details->range->base_address + details->range->size,
200+
details->protection & GUM_PAGE_READ ? 'R' : '-',
201+
details->protection & GUM_PAGE_WRITE ? 'W' : '-',
202+
details->protection & GUM_PAGE_EXECUTE ? 'X' : '-');
204203

205204
} else {
206205

207-
FVERBOSE("\t0x%016" G_GINT64_MODIFIER "x-0x%016" G_GINT64_MODIFIER
208-
"X %c%c%c %s(0x%016" G_GINT64_MODIFIER "x)",
209-
details->range->base_address,
210-
details->range->base_address + details->range->size,
211-
details->protection & GUM_PAGE_READ ? 'R' : '-',
212-
details->protection & GUM_PAGE_WRITE ? 'W' : '-',
213-
details->protection & GUM_PAGE_EXECUTE ? 'X' : '-',
214-
details->file->path, details->file->offset);
206+
OKF("\t0x%016" G_GINT64_MODIFIER "x-0x%016" G_GINT64_MODIFIER
207+
"X %c%c%c %s(0x%016" G_GINT64_MODIFIER "x)",
208+
details->range->base_address,
209+
details->range->base_address + details->range->size,
210+
details->protection & GUM_PAGE_READ ? 'R' : '-',
211+
details->protection & GUM_PAGE_WRITE ? 'W' : '-',
212+
details->protection & GUM_PAGE_EXECUTE ? 'X' : '-', details->file->path,
213+
details->file->offset);
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216215
}
217216

@@ -581,7 +580,7 @@ static GArray *merge_ranges(GArray *a) {
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582581
void ranges_print_debug_maps(void) {
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584-
FVERBOSE("Maps");
583+
OKF("Maps");
585584
gum_process_enumerate_ranges(GUM_PAGE_NO_ACCESS, print_ranges_callback, NULL);
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587586
}

‎include/afl-fuzz.h

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@@ -457,7 +457,7 @@ typedef struct afl_env_vars {
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afl_no_startup_calibration, afl_no_warn_instability,
458458
afl_post_process_keep_original, afl_crashing_seeds_as_new_crash,
459459
afl_final_sync, afl_ignore_seed_problems, afl_disable_redundant,
460-
afl_sha1_filenames;
460+
afl_sha1_filenames, afl_no_sync;
461461

462462
u8 *afl_tmpdir, *afl_custom_mutator_library, *afl_python_module, *afl_path,
463463
*afl_hang_tmout, *afl_forksrv_init_tmout, *afl_preload,
@@ -656,6 +656,7 @@ typedef struct afl_state {
656656
switch_fuzz_mode, /* auto or fixed fuzz mode */
657657
calibration_time_us, /* Time spend on calibration */
658658
sync_time_us, /* Time spend on sync */
659+
cmplog_time_us, /* Time spend on cmplog */
659660
trim_time_us; /* Time spend on trimming */
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661662
u32 slowest_exec_ms, /* Slowest testcase non hang in ms */
@@ -1226,6 +1227,7 @@ void show_init_stats(afl_state_t *);
12261227
void update_calibration_time(afl_state_t *afl, u64 *time);
12271228
void update_trim_time(afl_state_t *afl, u64 *time);
12281229
void update_sync_time(afl_state_t *afl, u64 *time);
1230+
void update_cmplog_time(afl_state_t *afl, u64 *time);
12291231

12301232
/* StatsD */
12311233

@@ -1276,6 +1278,7 @@ void get_core_count(afl_state_t *);
12761278
void fix_up_sync(afl_state_t *);
12771279
void check_asan_opts(afl_state_t *);
12781280
void check_binary(afl_state_t *, u8 *);
1281+
u64 get_binary_hash(u8 *fn);
12791282
void check_if_tty(afl_state_t *);
12801283
void save_cmdline(afl_state_t *, u32, char **);
12811284
void read_foreign_testcases(afl_state_t *, int);

‎include/config.h

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@@ -26,7 +26,7 @@
2626
/* Version string: */
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2828
// c = release, a = volatile github dev, e = experimental branch
29-
#define VERSION "++4.21a"
29+
#define VERSION "++4.21c"
3030

3131
/******************************************************
3232
* *
@@ -324,9 +324,9 @@
324324
#define SYNC_INTERVAL 8
325325

326326
/* Sync time (minimum time between syncing in ms, time is halfed for -M main
327-
nodes) - default is 30 minutes: */
327+
nodes) - default is 20 minutes: */
328328

329-
#define SYNC_TIME (30 * 60 * 1000)
329+
#define SYNC_TIME (20 * 60 * 1000)
330330

331331
/* Output directory reuse grace period (minutes): */
332332

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