i386/117139: panic on boot: panic: integer divide fault

[Shanker Balan]

>Number:         117139
>Category:       i386
>Synopsis:       panic on boot: panic: integer divide fault
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-i386
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Oct 12 17:50:00 UTC 2007
>Closed-Date:
>Last-Modified:
>Originator:     Shanker Balan
>Release:        CURRENT
>Organization:
Yahoo
>Environment:
[root at partvarious-lx /var/crash]# uname -a
FreeBSD partvarious-lx.eglbp.corp.yahoo.com 7.0-CURRENT FreeBSD 7.0-CURRENT #5: Sun Sep 23 13:48:49 IST 2007     shanu at partvarious-lx.eglbp.corp.yahoo.com:/usr/obj/usr/home/src/sys/MYKERNEL  i386

>Description:
Fatal trap 18: integer divide fault while in kernel mode
cpuid = 0; apic id = 00
instruction pointer     = 0x20:0xc0d827c7
stack pointer           = 0x28:0xd5012aec
frame pointer           = 0x28:0xd5012b34
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 76 (sysctl)
trap number             = 18
panic: integer divide fault
cpuid = 0
KDB: stack backtrace:
db_trace_self_wrapper(c0aaada9,d50129c8,c07501ff,c0acb176,0,...) at db_trace_self_wrapper+0x26
kdb_backtrace(c0acb176,0,c0a6b34b,d50129d4,0,...) at kdb_backtrace+0x29
panic(c0a6b34b,c0acc429,c2f73a18,1,1,...) at panic+0x10f
trap_fatal(c1472b54,c146d048,d5012a58,c09679af,c2f21cc0,...) at trap_fatal+0x32e
trap(d5012aac) at trap+0x5b0
calltrap() at calltrap+0x6
--- trap 0x12, eip = 0xc0d827c7, esp = 0xd5012aec, ebp = 0xd5012b34 ---
acpi_battery_get_battinfo(0,c0d9bddc,c2dad3a0,0,c0d9bddc,...) at acpi_battery_get_battinfo+0x1fb
acpi_battery_sysctl(c2f20740,c0d9bddc,0,d5012ba4,d5012ba4,4,4,c2f20740) at acpi_battery_sysctl+0x1e
sysctl_root(d5012ba4,d5012bb0,4,6400,0,...) at sysctl_root+0x145
userland_sysctl(c2f21cc0,d5012c14,4,0,bfbfe4a4,...) at userland_sysctl+0x134
__sysctl(c2f21cc0,d5012cfc,18,0,56,...) at __sysctl+0xd6
syscall(d5012d38) at syscall+0x32e
Xint0x80_syscall() at Xint0x80_syscall+0x20
--- syscall (202, FreeBSD ELF32, __sysctl), eip = 0x2814d5c7, esp = 0xbfbfdbac, ebp = 0xbfbfdbd8 ---
Uptime: 6s
Physical memory: 499 MB
Dumping 36 MB: 21 5

#0  doadump () at pcpu.h:195
195     pcpu.h: No such file or directory.
        in pcpu.h
(kgdb) where
#0  doadump () at pcpu.h:195
#1  0xc074ff22 in boot (howto=260)
    at /usr/home/src/sys/kern/kern_shutdown.c:409
#2  0xc075022e in panic (fmt=Variable "fmt" is not available.
) at /usr/home/src/sys/kern/kern_shutdown.c:563
#3  0xc0a17539 in trap_fatal (frame=0xd5012aac, eva=0)
    at /usr/home/src/sys/i386/i386/trap.c:872
#4  0xc0a18312 in trap (frame=0xd5012aac)
    at /usr/home/src/sys/i386/i386/trap.c:659
#5  0xc09ff47b in calltrap () at /usr/home/src/sys/i386/i386/exception.s:139
#6  0xc0d827c7 in ?? ()
Previous frame inner to this frame (corrupt stack?)
(kgdb) 

>How-To-Repeat:
Dunno. It worked fine the 2nd time i booted.
>Fix:


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