kern/121558: Supermicro X7SB4 Fatal trap 12 when ACPI disabled

[Leon Kos]

>Number:         121558
>Category:       kern
>Synopsis:       Supermicro X7SB4 Fatal trap 12 when ACPI disabled
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Mar 10 12:20:03 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     Leon Kos
>Release:        7.0-STABLE
>Organization:
University of Ljubljana
>Environment:
FreeBSD cad.lecad.uni-lj.si 7.0-STABLE FreeBSD 7.0-STABLE #0: Mon Mar 10 10:26:30 CET 2008     root at cad.lecad.uni-lj.si:/usr/src/sys/i386/compile/GENERIC  i386
>Description:
I am getting Fatal trap 12: page fault while in kernel mode
when booting GENERIC debug kernel with ACPI disabled on Supermicro X7SB4 motherboard with dual core Xeon CPU.

instruction pointer     =  0x20:0xc0a49aea
[root at cad ~]# nm -n /boot/kernel/kernel|grep c0a49ae
c0a49ae0 T ioapic_get_vector

Custom kernel shows up the same routine.

Here is dmesg after boot -v: http://pastebin.ca/936377

[root at cad ~]# sysctl hw.acpi
hw.acpi.supported_sleep_state: S1 S4 S5
hw.acpi.power_button_state: S5
hw.acpi.sleep_button_state: S1
hw.acpi.lid_switch_state: NONE
hw.acpi.standby_state: S1
hw.acpi.suspend_state: S3
hw.acpi.sleep_delay: 1
hw.acpi.s4bios: 0
hw.acpi.verbose: 1
hw.acpi.disable_on_reboot: 0
hw.acpi.handle_reboot: 0
hw.acpi.reset_video: 0
hw.acpi.cpu.cx_lowest: C1

acpidump -dt
http://www.lecad.uni-lj.si/~leon/tmp/supermicro-x7sb4.asl



>How-To-Repeat:
Supermicro X7SB4 motherboard with latest BIOS
Boot GENERIC with ACPI disabled

>Fix:
Booting with ACPI does not show this problem although rebooting does not work even if setting  hw.acpi.disable_on_reboot and hw.acpi.handle_reboot

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