// https://syzkaller.appspot.com/bug?id=8f063539d4ecf1faf3132624b57a641e923ee25a // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include static long syz_open_dev(long a0, long a1, long 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) - 1); buf[sizeof(buf) - 1] = 0; while ((hash = strchr(buf, '#'))) { *hash = '0' + (char)(a1 % 10); a1 /= 10; } return open(buf, a2, 0); } } uint64_t r[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; int main(void) { syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); long res = 0; memcpy((void*)0x20000000, "/dev/kvm", 9); res = syscall(__NR_openat, 0xffffffffffffff9c, 0x20000000, 0, 0); if (res != -1) r[0] = res; res = syscall(__NR_ioctl, r[0], 0xae01, 0); if (res != -1) r[1] = res; res = syscall(__NR_ioctl, r[1], 0xae41, 0); if (res != -1) r[2] = res; *(uint32_t*)0x200001c0 = 0; *(uint32_t*)0x200001c4 = 5; syscall(__NR_ioctl, r[2], 0xc080aebe, 0x200001c0); res = syscall(__NR_socketpair, 1, 3, 0, 0x20000180); if (res != -1) r[3] = *(uint32_t*)0x20000184; syscall(__NR_ioctl, r[3], 0x8912, 0x400200); *(uint64_t*)0x2014f000 = 0x203c7ff4; *(uint16_t*)0x203c7ff4 = 0x10; *(uint16_t*)0x203c7ff6 = 0; *(uint32_t*)0x203c7ff8 = 0; *(uint32_t*)0x203c7ffc = 0; *(uint32_t*)0x2014f008 = 0xc; *(uint64_t*)0x2014f010 = 0x200bfff0; *(uint64_t*)0x200bfff0 = 0x20006440; *(uint32_t*)0x20006440 = 0xb8; *(uint16_t*)0x20006444 = 0x19; *(uint16_t*)0x20006446 = 1; *(uint32_t*)0x20006448 = 0; *(uint32_t*)0x2000644c = 0; *(uint8_t*)0x20006450 = -1; *(uint8_t*)0x20006451 = 1; *(uint8_t*)0x20006452 = 0; *(uint8_t*)0x20006453 = 0; *(uint8_t*)0x20006454 = 0; *(uint8_t*)0x20006455 = 0; *(uint8_t*)0x20006456 = 0; *(uint8_t*)0x20006457 = 0; *(uint8_t*)0x20006458 = 0; *(uint8_t*)0x20006459 = 0; *(uint8_t*)0x2000645a = 0; *(uint8_t*)0x2000645b = 0; *(uint8_t*)0x2000645c = 0; *(uint8_t*)0x2000645d = 0; *(uint8_t*)0x2000645e = 0; *(uint8_t*)0x2000645f = 1; *(uint32_t*)0x20006460 = htobe32(0xe0000001); *(uint16_t*)0x20006470 = htobe16(0); *(uint16_t*)0x20006472 = htobe16(0); *(uint16_t*)0x20006474 = htobe16(0); *(uint16_t*)0x20006476 = htobe16(0); *(uint16_t*)0x20006478 = 0xa; *(uint8_t*)0x2000647a = 0; *(uint8_t*)0x2000647b = 0; *(uint8_t*)0x2000647c = 0; *(uint32_t*)0x20006480 = 0; *(uint32_t*)0x20006484 = 0; *(uint64_t*)0x20006488 = 0; *(uint64_t*)0x20006490 = 0; *(uint64_t*)0x20006498 = 0; *(uint64_t*)0x200064a0 = 0; *(uint64_t*)0x200064a8 = 0; *(uint64_t*)0x200064b0 = 0; *(uint64_t*)0x200064b8 = 0; *(uint64_t*)0x200064c0 = 0; *(uint64_t*)0x200064c8 = 0; *(uint64_t*)0x200064d0 = 0; *(uint64_t*)0x200064d8 = 0; *(uint64_t*)0x200064e0 = 0; *(uint32_t*)0x200064e8 = 0; *(uint32_t*)0x200064ec = 0; *(uint8_t*)0x200064f0 = 0; *(uint8_t*)0x200064f1 = 0; *(uint8_t*)0x200064f2 = 0; *(uint8_t*)0x200064f3 = 0; *(uint64_t*)0x200bfff8 = 0xb8; *(uint64_t*)0x2014f018 = 1; *(uint64_t*)0x2014f020 = 0; *(uint64_t*)0x2014f028 = 0; *(uint32_t*)0x2014f030 = 0; syscall(__NR_sendmsg, -1, 0x2014f000, 0); *(uint32_t*)0x20000000 = 0; *(uint16_t*)0x20000008 = 0xa; *(uint16_t*)0x2000000a = htobe16(0); *(uint32_t*)0x2000000c = 0; *(uint8_t*)0x20000010 = -1; *(uint8_t*)0x20000011 = 2; *(uint8_t*)0x20000012 = 0; *(uint8_t*)0x20000013 = 0; *(uint8_t*)0x20000014 = 0; *(uint8_t*)0x20000015 = 0; *(uint8_t*)0x20000016 = 0; *(uint8_t*)0x20000017 = 0; *(uint8_t*)0x20000018 = 0; *(uint8_t*)0x20000019 = 0; *(uint8_t*)0x2000001a = 0; *(uint8_t*)0x2000001b = 0; *(uint8_t*)0x2000001c = 0; *(uint8_t*)0x2000001d = 0; *(uint8_t*)0x2000001e = 0; *(uint8_t*)0x2000001f = 1; *(uint32_t*)0x20000020 = 0; syscall(__NR_setsockopt, -1, 0x29, 4, 0x20000000, 0x88); memcpy((void*)0x20000000, "/dev/kvm", 9); syscall(__NR_openat, 0xffffffffffffff9c, 0x20000000, 0, 0); memcpy((void*)0x20000000, "/dev/snd/controlC#", 19); syz_open_dev(0x20000000, 0, 0); syscall(__NR_ioctl, -1, 0x8912, 0x400200); return 0; }