status custom/rq
DELETE
llvm_mode/afl-llvm-cmplog.rt.o.c
-/*
- american fuzzy lop++ - LLVM instrumentation bootstrap
- ---------------------------------------------------
-
- Written by Laszlo Szekeres <lszekeres@google.com> and
- Michal Zalewski
-
- LLVM integration design comes from Laszlo Szekeres.
-
- Copyright 2015, 2016 Google Inc. All rights reserved.
- Copyright 2019-2020 AFLplusplus Project. All rights reserved.
-
- Licensed under the Apache License, Version 2.0 (the "License");
- you may not use this file except in compliance with the License.
- You may obtain a copy of the License at:
-
- http://www.apache.org/licenses/LICENSE-2.0
-
- This code is the rewrite of afl-as.h's main_payload.
-
-*/
-
-#ifdef __ANDROID__
-#include "android-ashmem.h"
-#endif
-#include "config.h"
-#include "types.h"
-#include "cmplog.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <signal.h>
-#include <unistd.h>
-#include <string.h>
-#include <assert.h>
-#include <stdint.h>
-
-#include <sys/mman.h>
-#include <sys/shm.h>
-#include <sys/wait.h>
-#include <sys/types.h>
-
-/* This is a somewhat ugly hack for the experimental 'trace-pc-guard' mode.
- Basically, we need to make sure that the forkserver is initialized after
- the LLVM-generated runtime initialization pass, not before. */
-
-#ifdef USE_TRACE_PC
-#define CONST_PRIO 5
-#else
-#define CONST_PRIO 0
-#endif /* ^USE_TRACE_PC */
-
-#include <sys/mman.h>
-#include <fcntl.h>
-
-/* Globals needed by the injected instrumentation. The __afl_area_initial region
- is used for instrumentation output before __afl_map_shm() has a chance to
- run. It will end up as .comm, so it shouldn't be too wasteful. */
-
-// In CmpLog, the only usage of __afl_area_ptr is to report errors
-u8* __afl_area_ptr;
-
-struct cmp_map* __afl_cmp_map;
-__thread u32 __afl_cmp_counter;
-
-/* Running in persistent mode? */
-
-static u8 is_persistent;
-
-/* SHM setup. */
-
-static void __afl_map_shm(void) {
-
- u8* id_str = getenv(SHM_ENV_VAR);
-
- /* If we're running under AFL, attach to the appropriate region, replacing the
- early-stage __afl_area_initial region that is needed to allow some really
- hacky .init code to work correctly in projects such as OpenSSL. */
-
- if (id_str) {
-
-#ifdef USEMMAP
- const char* shm_file_path = id_str;
- int shm_fd = -1;
- unsigned char* shm_base = NULL;
-
- /* create the shared memory segment as if it was a file */
- shm_fd = shm_open(shm_file_path, O_RDWR, 0600);
- if (shm_fd == -1) {
-
- printf("shm_open() failed\n");
- exit(1);
-
- }
-
- /* map the shared memory segment to the address space of the process */
- shm_base = mmap(0, MAP_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, shm_fd, 0);
- if (shm_base == MAP_FAILED) {
-
- close(shm_fd);
- shm_fd = -1;
-
- printf("mmap() failed\n");
- exit(2);
-
- }
-
- __afl_area_ptr = shm_base;
-#else
- u32 shm_id = atoi(id_str);
-
- __afl_area_ptr = shmat(shm_id, NULL, 0);
-#endif
-
- /* Whooooops. */
-
- if (__afl_area_ptr == (void*)-1) _exit(1);
-
- /* Write something into the bitmap so that even with low AFL_INST_RATIO,
- our parent doesn't give up on us. */
-
- __afl_area_ptr[0] = 1;
-
- }
-
- id_str = getenv(CMPLOG_SHM_ENV_VAR);
-
- if (id_str) {
-
- u32 shm_id = atoi(id_str);
-
- __afl_cmp_map = shmat(shm_id, NULL, 0);
-
- if (__afl_cmp_map == (void*)-1) _exit(1);
-
- }
-
-}
-
-/* Fork server logic. */
-
-static void __afl_start_forkserver(void) {
-
- static u8 tmp[4];
- s32 child_pid;
-
- u8 child_stopped = 0;
-
- void (*old_sigchld_handler)(int) = 0; // = signal(SIGCHLD, SIG_DFL);
-
- /* Phone home and tell the parent that we're OK. If parent isn't there,
- assume we're not running in forkserver mode and just execute program. */
-
- if (write(FORKSRV_FD + 1, tmp, 4) != 4) return;
-
- while (1) {
-
- u32 was_killed;
- int status;
-
- /* Wait for parent by reading from the pipe. Abort if read fails. */
-
- if (read(FORKSRV_FD, &was_killed, 4) != 4) _exit(1);
-
- /* If we stopped the child in persistent mode, but there was a race
- condition and afl-fuzz already issued SIGKILL, write off the old
- process. */
-
- if (child_stopped && was_killed) {
-
- child_stopped = 0;
- if (waitpid(child_pid, &status, 0) < 0) _exit(1);
-
- }
-
- if (!child_stopped) {
-
- /* Once woken up, create a clone of our process. */
-
- child_pid = fork();
- if (child_pid < 0) _exit(1);
-
- /* In child process: close fds, resume execution. */
-
- if (!child_pid) {
-
- signal(SIGCHLD, old_sigchld_handler);
-
- close(FORKSRV_FD);
- close(FORKSRV_FD + 1);
- return;
-
- }
-
- } else {
-
- /* Special handling for persistent mode: if the child is alive but
- currently stopped, simply restart it with SIGCONT. */
-
- kill(child_pid, SIGCONT);
- child_stopped = 0;
-
- }
-
- /* In parent process: write PID to pipe, then wait for child. */
-
- if (write(FORKSRV_FD + 1, &child_pid, 4) != 4) _exit(1);
-
- if (waitpid(child_pid, &status, is_persistent ? WUNTRACED : 0) < 0)
- _exit(1);
-
- /* In persistent mode, the child stops itself with SIGSTOP to indicate
- a successful run. In this case, we want to wake it up without forking
- again. */
-
- if (WIFSTOPPED(status)) child_stopped = 1;
-
- /* Relay wait status to pipe, then loop back. */
-
- if (write(FORKSRV_FD + 1, &status, 4) != 4) _exit(1);
-
- }
-
-}
-
-/* A simplified persistent mode handler, used as explained in README.llvm. */
-
-int __afl_persistent_loop(unsigned int max_cnt) {
-
- static u8 first_pass = 1;
- static u32 cycle_cnt;
-
- if (first_pass) {
-
- /* Make sure that every iteration of __AFL_LOOP() starts with a clean slate.
- On subsequent calls, the parent will take care of that, but on the first
- iteration, it's our job to erase any trace of whatever happened
- before the loop. */
-
- if (is_persistent) {
-
- // memset(__afl_area_ptr, 0, MAP_SIZE);
- __afl_area_ptr[0] = 1;
-
- }
-
- cycle_cnt = max_cnt;
- first_pass = 0;
- return 1;
-
- }
-
- if (is_persistent) {
-
- if (--cycle_cnt) {
-
- raise(SIGSTOP);
-
- __afl_area_ptr[0] = 1;
-
- return 1;
-
- } else {
-
- /* When exiting __AFL_LOOP(), make sure that the subsequent code that
- follows the loop is not traced. We do that by pivoting back to the
- dummy output region. */
-
- // __afl_area_ptr = __afl_area_initial;
-
- }
-
- }
-
- return 0;
-
-}
-
-/* This one can be called from user code when deferred forkserver mode
- is enabled. */
-
-void __afl_manual_init(void) {
-
- static u8 init_done;
-
- if (!init_done) {
-
- __afl_map_shm();
- __afl_start_forkserver();
- init_done = 1;
-
- }
-
-}
-
-/* Proper initialization routine. */
-
-__attribute__((constructor(CONST_PRIO))) void __afl_auto_init(void) {
-
- is_persistent = !!getenv(PERSIST_ENV_VAR);
-
- if (getenv(DEFER_ENV_VAR)) return;
-
- __afl_manual_init();
-
-}
-
-///// CmpLog instrumentation
-
-void __sanitizer_cov_trace_cmp1(uint8_t Arg1, uint8_t Arg2) {
-
- return;
-
-}
-
-void __sanitizer_cov_trace_cmp2(uint16_t Arg1, uint16_t Arg2) {
-
- if (!__afl_cmp_map) return;
-
- uintptr_t k = (uintptr_t)__builtin_return_address(0);
- k = (k >> 4) ^ (k << 8);
- k &= CMP_MAP_W - 1;
-
- u32 hits = __afl_cmp_map->headers[k].hits;
- __afl_cmp_map->headers[k].hits = hits + 1;
- // if (!__afl_cmp_map->headers[k].cnt)
- // __afl_cmp_map->headers[k].cnt = __afl_cmp_counter++;
-
- __afl_cmp_map->headers[k].shape = 1;
- //__afl_cmp_map->headers[k].type = CMP_TYPE_INS;
-
- hits &= CMP_MAP_H - 1;
- __afl_cmp_map->log[k][hits].v0 = Arg1;
- __afl_cmp_map->log[k][hits].v1 = Arg2;
-
-}
-
-void __sanitizer_cov_trace_cmp4(uint32_t Arg1, uint32_t Arg2) {
-
- if (!__afl_cmp_map) return;
-
- uintptr_t k = (uintptr_t)__builtin_return_address(0);
- k = (k >> 4) ^ (k << 8);
- k &= CMP_MAP_W - 1;
-
- u32 hits = __afl_cmp_map->headers[k].hits;
- __afl_cmp_map->headers[k].hits = hits + 1;
-
- __afl_cmp_map->headers[k].shape = 3;
-
- hits &= CMP_MAP_H - 1;
- __afl_cmp_map->log[k][hits].v0 = Arg1;
- __afl_cmp_map->log[k][hits].v1 = Arg2;
-
-}
-
-void __sanitizer_cov_trace_cmp8(uint64_t Arg1, uint64_t Arg2) {
-
- if (!__afl_cmp_map) return;
-
- uintptr_t k = (uintptr_t)__builtin_return_address(0);
- k = (k >> 4) ^ (k << 8);
- k &= CMP_MAP_W - 1;
-
- u32 hits = __afl_cmp_map->headers[k].hits;
- __afl_cmp_map->headers[k].hits = hits + 1;
-
- __afl_cmp_map->headers[k].shape = 7;
-
- hits &= CMP_MAP_H - 1;
- __afl_cmp_map->log[k][hits].v0 = Arg1;
- __afl_cmp_map->log[k][hits].v1 = Arg2;
-
-}
-
-#if defined(__APPLE__)
-#pragma weak __sanitizer_cov_trace_const_cmp1 = __sanitizer_cov_trace_cmp1
-#pragma weak __sanitizer_cov_trace_const_cmp2 = __sanitizer_cov_trace_cmp2
-#pragma weak __sanitizer_cov_trace_const_cmp4 = __sanitizer_cov_trace_cmp4
-#pragma weak __sanitizer_cov_trace_const_cmp8 = __sanitizer_cov_trace_cmp8
-#else
-void __sanitizer_cov_trace_const_cmp1(uint8_t Arg1, uint8_t Arg2)
- __attribute__((alias("__sanitizer_cov_trace_cmp1")));
-void __sanitizer_cov_trace_const_cmp2(uint16_t Arg1, uint16_t Arg2)
- __attribute__((alias("__sanitizer_cov_trace_cmp2")));
-void __sanitizer_cov_trace_const_cmp4(uint32_t Arg1, uint32_t Arg2)
- __attribute__((alias("__sanitizer_cov_trace_cmp4")));
-void __sanitizer_cov_trace_const_cmp8(uint64_t Arg1, uint64_t Arg2)
- __attribute__((alias("__sanitizer_cov_trace_cmp8")));
-#endif /* defined(__APPLE__) */
-
-void __sanitizer_cov_trace_switch(uint64_t Val, uint64_t* Cases) {
-
- for (uint64_t i = 0; i < Cases[0]; i++) {
-
- uintptr_t k = (uintptr_t)__builtin_return_address(0) + i;
- k = (k >> 4) ^ (k << 8);
- k &= CMP_MAP_W - 1;
-
- u32 hits = __afl_cmp_map->headers[k].hits;
- __afl_cmp_map->headers[k].hits = hits + 1;
-
- __afl_cmp_map->headers[k].shape = 7;
-
- hits &= CMP_MAP_H - 1;
- __afl_cmp_map->log[k][hits].v0 = Val;
- __afl_cmp_map->log[k][hits].v1 = Cases[i + 2];
-
- }
-
-}
-
-
-void __sanitizer_cov_trace_pc_guard(uint32_t* guard) {
-}
-
-void __sanitizer_cov_trace_pc_guard_init(uint32_t* start, uint32_t* stop) {
-}
-
-//// Library functions hooks
-
-// TODO

MODIFY
src/afl-fuzz-stats.c
src/afl-fuzz-stats.c
@@ -603,7 +603,7 @@ void show_stats(void) {
DI(stage_cycles[STAGE_COLORIZATION]), DI(stage_finds[STAGE_ITS]),
DI(stage_cycles[STAGE_ITS]));
- SAYF(bV bSTOP " py/custom : " cRST "%-36s " bSTG bVR bH20 bH2 bH bRB "\n",
+ SAYF(bV bSTOP " custom/rq : " cRST "%-36s " bSTG bVR bH20 bH2 bH bRB "\n",
tmp);
if (!bytes_trim_out) {

status custom/rq