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This commit is contained in:
van Hauser
2020-06-01 12:30:55 +02:00
parent bca7ce8043
commit 0de25f08ba
4 changed files with 43 additions and 23 deletions
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41
llvm_mode/afl-llvm-rt.o.c
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@ -74,11 +74,11 @@ u8 __afl_area_initial[MAP_INITIAL_SIZE];
#else
u8 __afl_area_initial[MAP_SIZE];
#endif
u8 *__afl_area_ptr = __afl_area_initial;
u8 *__afl_dictionary;
u8 *__afl_fuzz_ptr;
u32 __afl_fuzz_len;
u32 __afl_fuzz_len_dummy;
u8 * __afl_area_ptr = __afl_area_initial;
u8 * __afl_dictionary;
u8 * __afl_fuzz_ptr;
u32 __afl_fuzz_len;
u32 __afl_fuzz_len_dummy;
u32 *__afl_fuzz_len_shmem = &__afl_fuzz_len_dummy;
u32 __afl_final_loc;
@ -165,8 +165,9 @@ static void __afl_map_shm_fuzz() {
exit(1);
}
__afl_fuzz_len_shmem = (u32*) mmap(NULL, sizeof(int), PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS, -1, 0);
__afl_fuzz_len_shmem = (u32 *)mmap(NULL, sizeof(int), PROT_READ | PROT_WRITE,
MAP_SHARED | MAP_ANONYMOUS, -1, 0);
}
@ -450,22 +451,31 @@ static void __afl_start_snapshots(void) {
*__afl_fuzz_len_shmem = __afl_fuzz_len = (was_killed >> 8);
was_killed = (was_killed & 0xff);
#ifdef _AFL_DOCUMENT_MUTATIONS
#ifdef _AFL_DOCUMENT_MUTATIONS
if (__afl_fuzz_ptr) {
static uint32_t counter = 0;
char fn[32];
char fn[32];
sprintf(fn, "%09u:forkserver", counter);
s32 fd_doc = open(fn, O_WRONLY | O_CREAT | O_TRUNC, 0600);
if (fd_doc >= 0) {
if (write(fd_doc, __afl_fuzz_ptr, __afl_fuzz_len) != __afl_fuzz_len) {
fprintf(stderr, "write of mutation file failed: %s\n", fn);
unlink(fn);
}
close(fd_doc);
}
counter++;
}
#endif
#endif
/* If we stopped the child in persistent mode, but there was a race
condition and afl-fuzz already issued SIGKILL, write off the old
@ -646,19 +656,28 @@ static void __afl_start_forkserver(void) {
#ifdef _AFL_DOCUMENT_MUTATIONS
if (__afl_fuzz_ptr) {
static uint32_t counter = 0;
char fn[32];
char fn[32];
sprintf(fn, "%09u:forkserver", counter);
s32 fd_doc = open(fn, O_WRONLY | O_CREAT | O_TRUNC, 0600);
if (fd_doc >= 0) {
if (write(fd_doc, __afl_fuzz_ptr, __afl_fuzz_len) != __afl_fuzz_len) {
fprintf(stderr, "write of mutation file failed: %s\n", fn);
unlink(fn);
}
close(fd_doc);
}
counter++;
}
#endif
/* If we stopped the child in persistent mode, but there was a race