// https://syzkaller.appspot.com/bug?id=40653bf7302f00cfb9e28e4198d357c34f6f97ab // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void kill_and_wait(int pid, int* status) { kill(pid, SIGKILL); while (waitpid(-1, status, 0) != pid) { } } static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void execute_one(void); #define WAIT_FLAGS 0 static void loop(void) { int iter = 0; for (;; iter++) { int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; sleep_ms(1); if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } } } uint64_t r[1] = {0xffffffffffffffff}; void execute_one(void) { intptr_t res = 0; res = syscall(SYS_socket, 2ul, 1ul, 0); if (res != -1) r[0] = res; *(uint32_t*)0x20000080 = 0xd3; memcpy((void*)0x20000084, "\x39\x5b\x0a\x31\xf4\xef\xe8\x11\xe9\xe7\xe3\x39\x74\x75\xe1\x6d", 16); syscall(SYS_setsockopt, r[0], 6, 0x401, 0x20000080ul, 0x14ul); *(uint8_t*)0x20000140 = 0x10; *(uint8_t*)0x20000141 = 2; *(uint16_t*)0x20000142 = htobe16(0x4e22); *(uint8_t*)0x20000144 = 0xac; *(uint8_t*)0x20000145 = 0x14; *(uint8_t*)0x20000146 = 0; *(uint8_t*)0x20000147 = 0xbb; memset((void*)0x20000148, 0, 8); syscall(SYS_sendto, r[0], 0ul, 0ul, 0ul, 0x20000140ul, 0x10ul); memcpy((void*)0x20000100, "vegas\000", 6); syscall(SYS_setsockopt, r[0], 6, 0x40, 0x20000100ul, 6ul); } int main(void) { syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x1012ul, -1, 0ul); loop(); return 0; }