login: kue_poc: if_kue.c:488 with sc_desc all-zero: kmalloc(0*6) -> sc_mcfilters=0xfffffffffffffff8 (ZERO_LENGTH_PTR=0xfffffffffffffff8, NULL-guard at :490 DEAD) kue_poc: descriptor arrived: KUE_MCFILTCNT(sc)=2 (was 0 at allocation time in the stock driver) kue_poc: entering VERBATIM kue_setmulti() (if_kue.c:355-398): memcpy(KUE_MCFILT(sc,0)=0xfffffffffffffff8, ..., 6) Fatal trap 12: page fault while in kernel mode cpuid = 2; lapic id = 2 fault virtual address = 0xfffffffffffffff8 fault code = supervisor write data, page not present instruction pointer = 0x8:0xffffffff826001e9 stack pointer = 0x10:0xfffff80117df1788 frame pointer = 0x10:0xfffff80117df1798 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 1071 current thread = pri 10 kernel: type 12 trap, code=2 CPU2 stopping CPUs: 0x0000003b stopped Stopped at kue_setmulti+0x89: movl %edi,(%rax) db>