// https://syzkaller.appspot.com/bug?id=b4d82487358a6252846fae63b21f3abbd7a226c2 // 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, 0x1cul, 1ul, 0); if (res != -1) r[0] = res; memcpy((void*)0x20000340, "\x6c\x0c\x00\x06", 4); syscall(SYS_setsockopt, r[0], 0x29, 0x33, 0x20000340ul, 0x68ul); *(uint32_t*)0x20000100 = 5; syscall(SYS_setsockopt, r[0], 6, 0x47, 0x20000100ul, 4ul); *(uint8_t*)0x20000240 = 0x1c; *(uint8_t*)0x20000241 = 0x1c; *(uint16_t*)0x20000242 = htobe16(0x4e21); *(uint32_t*)0x20000244 = 0; *(uint8_t*)0x20000248 = 0xfe; *(uint8_t*)0x20000249 = 0x80; memset((void*)0x2000024a, 0, 12); *(uint8_t*)0x20000256 = 0; *(uint8_t*)0x20000257 = 0xaa; *(uint32_t*)0x20000258 = 2; syscall(SYS_connect, r[0], 0x20000240ul, 0x1cul); } int main(void) { syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x1012ul, -1, 0ul); loop(); return 0; }