// autogenerated by syzkaller (http://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include static uintptr_t syz_open_procfs(uintptr_t a0, uintptr_t a1) { char buf[128]; memset(buf, 0, sizeof(buf)); if (a0 == 0) { snprintf(buf, sizeof(buf), "/proc/self/%s", (char*)a1); } else if (a0 == (uintptr_t)-1) { snprintf(buf, sizeof(buf), "/proc/thread-self/%s", (char*)a1); } else { snprintf(buf, sizeof(buf), "/proc/self/task/%d/%s", (int)a0, (char*)a1); } int fd = open(buf, O_RDWR); if (fd == -1) fd = open(buf, O_RDONLY); return fd; } long r[26]; void* thr(void* arg) { switch ((long)arg) { case 0: r[0] = syscall(__NR_mmap, 0x20000000ul, 0xfff000ul, 0x3ul, 0x32ul, 0xfffffffffffffffful, 0x0ul); break; case 1: memcpy((void*)0x20337ff2, "\x74\x69\x6d\x65\x72\x73\x00", 7); r[2] = syz_open_procfs(0x0ul, 0x20337ff2ul); break; case 2: *(uint64_t*)0x20f40000 = (uint64_t)0x201ee000; *(uint64_t*)0x20f40008 = (uint64_t)0x0; *(uint64_t*)0x20f40010 = (uint64_t)0x20fe3000; *(uint64_t*)0x20f40018 = (uint64_t)0x0; *(uint64_t*)0x20f40020 = (uint64_t)0x209f0f31; *(uint64_t*)0x20f40028 = (uint64_t)0x0; *(uint64_t*)0x20f40030 = (uint64_t)0x2083e000; *(uint64_t*)0x20f40038 = (uint64_t)0x1000; r[11] = syscall(__NR_preadv, r[2], 0x20f40000ul, 0x4ul, 0x2000004ul); break; case 3: *(uint64_t*)0x202ba000 = (uint64_t)0x0; *(uint32_t*)0x202ba008 = (uint32_t)0x1d; *(uint32_t*)0x202ba00c = (uint32_t)0x1000002; *(uint64_t*)0x202ba010 = (uint64_t)0x207db000; *(uint64_t*)0x202ba018 = (uint64_t)0x20568fd4; *(uint64_t*)0x202ba020 = (uint64_t)0x0; *(uint64_t*)0x202ba028 = (uint64_t)0x0; *(uint64_t*)0x202ba030 = (uint64_t)0x0; *(uint64_t*)0x202ba038 = (uint64_t)0x0; *(uint64_t*)0x202ba040 = (uint64_t)0x0; *(uint64_t*)0x202ba048 = (uint64_t)0x0; *(uint64_t*)0x202ba050 = (uint64_t)0x0; *(uint64_t*)0x202ba058 = (uint64_t)0x0; r[25] = syscall(__NR_timer_create, 0x0ul, 0x202ba000ul, 0x201e6ffcul); break; } return 0; } void loop() { long i; pthread_t th[8]; memset(r, -1, sizeof(r)); srand(getpid()); for (i = 0; i < 4; i++) { pthread_create(&th[i], 0, thr, (void*)i); usleep(rand() % 10000); } for (i = 0; i < 4; i++) { pthread_create(&th[4 + i], 0, thr, (void*)i); if (rand() % 2) usleep(rand() % 10000); } usleep(rand() % 100000); } int main() { loop(); return 0; }