i386/144045: kernel trap

[Darin Peshev]

>Number:         144045
>Category:       i386
>Synopsis:       kernel trap
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-i386
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Feb 17 17:30:03 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator:     Darin Peshev
>Release:        8.0 stable
>Organization:
>Environment:
FreeBSD router.local 8.0-STABLE FreeBSD 8.0-STABLE #0: Mon Feb 15 15:59:36 EST 2010     sullrich at FreeBSD_8.0_pfSense_2.0-snaps.pfsense.org:/usr/obj.pfSense/usr/pfSensesrc/src/sys/pfSense_wrap.8.i386  i386
>Description:
Booting with ACPI enabled in BIOS on Norco-7732 motherboard based box which  designed for network appliances (http://www.norcotek.com/NORCO-7732V.php)leads to that:

kernel trap 12 with interrupts disabled


Fatal trap 12: page fault while in kernel mode
fault virtual address   = 0xf000e2c3
fault code              = supervisor read, page not present
instruction poRoot mount waiting for: usbus2 usbus1 usbus0
uhub0: 2 ports with 2 removable, self powered
uhub1: 2 ports with 2 removable, self powered
inter   = 0x20:0xc0509799
stack pointer           = 0x28:0xc2f71c9c
frame pointer           = 0x28:0xc2f71cc0
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = resume, IOPL = 0
current process         = 10 (idle)
[thread pid 10 tid 64003 ]
Stopped at      acpi_battery_get_battinfo+0x2859:       movzbl  0(%ebx),%eax
db>
>How-To-Repeat:
Enable ACPI in BIOS and try to boot. 
>Fix:
Disabling ACPI avoids the trap. Here is the output of bt:

db> bt
Tracing pid 10 tid 64003 td 0xc3036b90
acpi_battery_get_battinfo(c2e71cd4,c0abc632,1,c2e71cf4,c086174f,...) at acpi_battery_get_battinfo+0x2859
set_fpregs(1,c2e71cf4,c086174f,1,0,...) at set_fpregs+0x11b
cpu_idle(1,0,c3036b90,c2e71cf4,0,...) at cpu_idle+0x12
sched_idletd(0,c2e71d38,0,0,0,...) at sched_idletd+0x6f
fork_exit(c08616e0,0,c2e71d38) at fork_exit+0x90
fork_trampoline() at fork_trampoline+0x8
--- trap 0, eip = 0, esp = 0xc2e71d70, ebp = 0 ---
db>

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