kern/92127: Kernel crash

[Joshua Isom]

>Number:         92127
>Category:       kern
>Synopsis:       Kernel crash
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Jan 22 03:20:03 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator:     Joshua Isom
>Release:        6.0
>Organization:
>Environment:
FreeBSD freebsd.loneowl.net 6.0-RELEASE FreeBSD 6.0-RELEASE #0: Thu Nov  3 09:36:13 UTC 2005     root at x64.samsco.home:/usr/obj/usr/src/sys/GENERIC  i386
>Description:
I installed FreeBSD 6.0 today(discs from FreeBSD Mall), and after making a clean install, I went to get things up and reconfigured.  I ran vim on the README.txt file on disc 3 of the install, through ssh, and before it was done, I recieved a kernel crash.  I read it, pressed a key, I think it said it'd make it abort, and it rebooted.  Here's the contents of the /var/crash/info.0 file.  There's a backtrace from kgdb below it.

Dump header from device /dev/ad0s1b
  Architecture: i386
  Architecture Version: 2
  Dump Length: 132513792B (126 MB)
  Blocksize: 512
  Dumptime: Sat Jan 21 20:41:38 2006
  Hostname: freebsd.loneowl.net
  Magic: FreeBSD Kernel Dump
  Version String: FreeBSD 6.0-RELEASE #0: Thu Nov  3 09:36:13 UTC 2005
    root at x64.samsco.home:/usr/obj/usr/src/sys/GENERIC
  Panic String: page fault
  Dump Parity: 3603780946
  Bounds: 0
  Dump Status: good

--------------------------------------
#0  doadump () at pcpu.h:165
#1  0xc0638202 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:399
#2  0xc0638498 in panic (fmt=0xc084e5a2 "%s")
    at /usr/src/sys/kern/kern_shutdown.c:555
#3  0xc0807c30 in trap_fatal (frame=0xcca7fa50, eva=536872395)
    at /usr/src/sys/i386/i386/trap.c:831
#4  0xc080799b in trap_pfault (frame=0xcca7fa50, usermode=0, eva=536872395)
    at /usr/src/sys/i386/i386/trap.c:742
#5  0xc08075d9 in trap (frame=
      {tf_fs = -1055457272, tf_es = 40, tf_ds = 40, tf_edi = -1043623808, tf_esi = 536872395, tf_ebp = -861406556, tf_isp = -861406596, tf_ebx = -1040209856, tf_edx = 2048, tf_ecx = 0, tf_eax = 1, tf_trapno = 12, tf_err = 0, tf_eip = -1067450802, tf_cs = 32, tf_eflags = 66178, tf_esp = 1, tf_ss = 0})
    at /usr/src/sys/i386/i386/trap.c:432
#6  0xc07f6dca in calltrap () at /usr/src/sys/i386/i386/exception.s:139
#7  0xc05ffe4e in g_io_request (bp=0xc1ffa840, cp=0xc1cb9080)
    at /usr/src/sys/geom/geom_io.c:259
#8  0xc0602399 in g_vfs_strategy (bo=0x1, bp=0xc3963278)
    at /usr/src/sys/geom/geom_vfs.c:106
#9  0xc060a2d9 in cd9660_strategy (ap=0x1)
    at /usr/src/sys/isofs/cd9660/cd9660_vnops.c:755
#10 0xc0817a49 in VOP_STRATEGY_APV (vop=0xc08bd320, a=0xcca7faf8)
    at vnode_if.c:1796
#11 0xc0681de8 in bufstrategy (bo=0xc19ee3f0, bp=0x1) at vnode_if.h:928
#12 0xc067c78d in breadn (vp=0xc19ee330, blkno=0, size=2048, rablkno=0x0, 
    rabsize=0x0, cnt=0, cred=0x0, bpp=0x1) at buf.h:415
#13 0xc067c6d0 in bread (vp=0xc19ee330, blkno=0, size=2048, cred=0x0, 
    bpp=0xcca7fbb0) at /usr/src/sys/kern/vfs_bio.c:719
#14 0xc06098c7 in cd9660_read (ap=0xcca7fbf4)
    at /usr/src/sys/isofs/cd9660/cd9660_vnops.c:318
#15 0xc08170d0 in VOP_READ_APV (vop=0x1, a=0x800) at vnode_if.c:643
#16 0xc069971e in vn_read (fp=0xc14ed828, uio=0xcca7fcbc, 
    active_cred=0xc1f2e980, flags=0, td=0xc1596c00) at vnode_if.h:343
#17 0xc0659531 in dofileread (td=0xc1596c00, fd=3, fp=0xc14ed828, 
    auio=0xcca7fcbc, offset=Unhandled dwarf expression opcode 0x93
) at file.h:234
#18 0xc06593ca in kern_readv (td=0xc1596c00, fd=3, auio=0xcca7fcbc)
    at /usr/src/sys/kern/sys_generic.c:192
#19 0xc06592f5 in read (td=0xc1596c00, uap=0x0)
    at /usr/src/sys/kern/sys_generic.c:116
#20 0xc0807f47 in syscall (frame=
      {tf_fs = 59, tf_es = 59, tf_ds = 59, tf_edi = 135909376, tf_esi = 0, tf_ebp = -1077943416, tf_isp = -861405852, tf_ebx = 677012660, tf_edx = 0, tf_ecx = 135881104, tf_eax = 3, tf_trapno = 22, tf_err = 2, tf_eip = 677304371, tf_cs = 51, tf_eflags = 646, tf_esp = -1077943460, tf_ss = 59})
    at /usr/src/sys/i386/i386/trap.c:976
#21 0xc07f6e1f in Xint0x80_syscall () at /usr/src/sys/i386/i386/exception.s:200
#22 0x00000033 in ?? ()

>How-To-Repeat:
Unknown.
>Fix:

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