kernel panic on HEAD from Oct. 4th sources

[Peter Avalos <pavalos@xxxxxxxxxxxx>]

Just had this one last night:

Fatal trap 12: page fault while in kernel mode
mp_lock = 00000000; cpuid = 0; lapic.id = 00000000
fault virtual address   = 0xc
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0xc018cb85
stack pointer           = 0x10:0xec3195f8
frame pointer           = 0x10:0xec319610
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         = 25996 (devilator)
current thread          = pri 10 
 <- SMP: XXX
trap number             = 12
panic: page fault
mp_lock = 00000000; cpuid = 0
boot() called on cpu#0
Uptime: 11d7h16m52s

dumping to dev #da/0x20001, blockno 378927

(kgdb) bt
#0  dumpsys () at thread.h:83
#1  0xc019b9d2 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:371
#2  0xc019bcef in panic (fmt=Variable "fmt" is not available.
) at /usr/src/sys/kern/kern_shutdown.c:796
#3  0xc02e48c0 in trap_fatal (frame=0xec3195b0, eva=Variable "eva" is not available.
) at /usr/src/sys/platform/pc32/i386/trap.c:1096
#4  0xc02e4a18 in trap_pfault (frame=0xec3195b0, usermode=0, eva=12) at /usr/src/sys/platform/pc32/i386/trap.c:997
#5  0xc02e50d0 in trap (frame=0xec3195b0) at /usr/src/sys/platform/pc32/i386/trap.c:680
#6  0xc02d1106 in calltrap () at /usr/src/sys/platform/pc32/i386/exception.s:783
#7  0xc018cb85 in fill_kinfo_proc (p=0xe8c21ba0, kp=0xec319628) at /usr/src/sys/kern/kern_kinfo.c:66
#8  0xc0193ebd in sysctl_out_proc (p=0xe8c21ba0, req=0xec319bf4, flags=0) at /usr/src/sys/kern/kern_proc.c:653
#9  0xc0194876 in sysctl_kern_proc (oidp=0xc033d880, arg1=0x0, arg2=0, req=0xec319bf4) at /usr/src/sys/kern/kern_proc.c:782
#10 0xc01ab705 in sysctl_root (oidp=Variable "oidp" is not available.
) at /usr/src/sys/kern/kern_sysctl.c:1194
#11 0xc01ab81d in userland_sysctl (name=0xec319c7c, namelen=3, old=0x2855e000, oldlenp=0xbfbff944, inkernel=0, new=0x0, newlen=0, retval=0xec319c78)
    at /usr/src/sys/kern/kern_sysctl.c:1269
#12 0xc01aba89 in sys___sysctl (uap=0xec319cf0) at /usr/src/sys/kern/kern_sysctl.c:1212
#13 0xc02e5799 in syscall2 (frame=0xec319d40) at /usr/src/sys/platform/pc32/i386/trap.c:1339
#14 0xc02d11a5 in Xint0x80_syscall () at /usr/src/sys/platform/pc32/i386/exception.s:872
#15 0x280c6c9c in ?? ()
#16 0xbfbff8ac in ?? ()
#17 0x0000002f in ?? ()
#18 0x00000000 in ?? ()
#19 0x00000000 in ?? ()
#20 0x00000000 in ?? ()
#21 0x00000000 in ?? ()
#22 0x2cef6000 in ?? ()
#23 0x00000002 in ?? ()
#24 0xc035ba98 in intr_info_ary ()
#25 0xec319224 in ?? ()
#26 0xec319208 in ?? ()
#27 0xd9f56300 in ?? ()
#28 0xc01a34c1 in lwkt_preempt (ntd=0xbfbff944, critpri=Cannot access memory at address 0xbfbff8e4
) at /usr/src/sys/kern/lwkt_thread.c:893
Previous frame inner to this frame (corrupt stack?)

# uname -a
DragonFly ylem.theshell.com 1.11.0-DEVELOPMENT DragonFly 1.11.0-DEVELOPMENT #0: Thu Oct  4 16:19:59 EDT 2007     root@ylem.theshell.com:/usr/obj/usr/src/sys/YLEM  i386

vmcore is being uploaded to leaf:~pavalos/crash/5/

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