kern/125723: System randomly crashes or can not boot - ciss error

[Bob Martin]

>Number:         125723
>Category:       kern
>Synopsis:       System randomly crashes or can not boot - ciss error
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Jul 17 19:40:03 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     Bob Martin
>Release:        FreeBSD 7.0-RELEASE amd64
>Organization:
Internet REIT
>Environment:
FreeBSD process2.ireit.pro 7.0-RELEASE FreeBSD 7.0-RELEASE #0: Tue May 6 14:34:50 CDT 2008 root at process2.internetreit.local:/usr/obj/usr/src/sys/GENERIC amd64
>Description:
Server is a Proliant DL585 G1, 4 dual core 2.2GHZ AMD opterons, 32GB RAM

Approximately every 20 days, the server will panic without warning. Load seems to have no bearing on the problem. Output from panic below.

Then upon attempting to restart, the following error shows up:
ciss0: adapter refuses to accept config update (IDBR 0x1). This may happen once, or several times. Cold boots have no effect on this.

Message seen when the system panics:
Uptime: 20d13h46m33s

Fatal trap 12: page fault while in kernel mode cpuid = 7; apic id = 07 fault virtual address = 0x28 fault code = supervisor read data, page not present instruction pointer = 0x8:0xffffffff804aac80 stack pointer = 0x10:0xffffffffae388b30 frame pointer = 0x10:0xffffff00010f3000 code segment = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = resume, IOPL = 0 current process = 36 (irq18: ciss0)

>How-To-Repeat:
We have been unable to force this to happen.
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: