Re: arcmsr crash

On Tuesday 05 June 2007 05:22:38 pm Matt Reimer wrote:
> Once a week or so we're seeing a panic with a -current kernel built
> just before the gcc 4.2 import (maybe three weeks ago). The box has a
> Supermicro X7DBE/X7DBE+ motherboard with two Xeon 5160s, 16G RAM, and
> an Areca 1220 controller with eight 500G disks connected.
> 
> Does this indicate that the arcmsr driver is at fault:
> 
> Tracing command irq16: arcmsr0 pid 26 tid 100018 td 0xffffff040fc5b000
> cpustop_handler() at cpustop_handler+0x35
> ipi_nmi_handler() at ipi_nmi_handler+0x2e
> trap() at trap+0x365
> nmi_calltrap() at nmi_calltrap+0x8
> --- trap 0x13, rip = 0xffffffff8041ab11, rsp = 0xffffffffab59eff0, rbp
> = 0xffffffffac0a37d0 ---
> siocnclose() at siocnclose+0x21
> sio_cnputc() at sio_cnputc+0x89
> cnputc() at cnputc+0x6a
> putchar() at putchar+0x5f
> kvprintf() at kvprintf+0xd45
> printf() at printf+0xe1
> panic() at panic+0x145
> xpt_done() at xpt_done+0x14a
> arcmsr_interrupt() at arcmsr_interrupt+0x2df
> ithread_loop() at ithread_loop+0x108
> fork_exit() at fork_exit+0xaa
> fork_trampoline() at fork_trampoline+0xe
> --- trap 0, rip = 0, rsp = 0xffffffffac0a3d30, rbp = 0 ---

Looks like it has panic'd here:

                switch (done_ccb->ccb_h.path->periph->type) {
                case CAM_PERIPH_BIO:
                        mtx_lock(&cam_bioq_lock);
                        TAILQ_INSERT_TAIL(&cam_bioq, &done_ccb->ccb_h,
                                          sim_links.tqe);
                        done_ccb->ccb_h.pinfo.index = CAM_DONEQ_INDEX;
                        mtx_unlock(&cam_bioq_lock);
                        swi_sched(cambio_ih, 0);
                        break;
                default:
                        panic("unknown periph type %d",
                            done_ccb->ccb_h.path->periph->type);
                }

which should seem to indicate that, yes, it is a driver bug.

-- 
John Baldwin