// https://syzkaller.appspot.com/bug?id=e594c81bfd24c3ef5206d993c986d1e0c41aed19 // autogenerated by syzkaller (http://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include static uintptr_t syz_open_dev(uintptr_t a0, uintptr_t a1, uintptr_t a2) { if (a0 == 0xc || a0 == 0xb) { char buf[128]; sprintf(buf, "/dev/%s/%d:%d", a0 == 0xc ? "char" : "block", (uint8_t)a1, (uint8_t)a2); return open(buf, O_RDWR, 0); } else { char buf[1024]; char* hash; strncpy(buf, (char*)a0, sizeof(buf)); buf[sizeof(buf) - 1] = 0; while ((hash = strchr(buf, '#'))) { *hash = '0' + (char)(a1 % 10); a1 /= 10; } return open(buf, a2, 0); } } long r[1]; void loop() { memset(r, -1, sizeof(r)); syscall(__NR_mmap, 0x20000000, 0xc000, 3, 0x32, -1, 0); memcpy((void*)0x20009000, "/dev/snd/pcmC#D#c", 18); r[0] = syz_open_dev(0x20009000, 0, 0); *(uint32_t*)0x20002000 = 0; *(uint32_t*)0x20002004 = 0x80; *(uint32_t*)0x20005000 = 8; syscall(__NR_getsockopt, -1, 0x84, 0x75, 0x20002000, 0x20005000); memcpy((void*)0x20001f64, "\xac\x7d\x34\xf6\xf2\x99\x5a\x5f\xb9\xca\xe8\x95\x9c", 13); syscall(__NR_ioctl, r[0], 0xc1004110, 0x20001f64); } int main() { loop(); return 0; }