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Date: Mon, 10 Mar 1997 03:14:59 -0800 (PST)
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To: gibbs@freebsd.org
CC: current@freebsd.org
Subject: RELENG_2_2 crash
From: asami@vader.cs.berkeley.edu (Satoshi Asami)
Sender: owner-current@freebsd.org
X-Loop: FreeBSD.org
Precedence: bulk

My package building machine just crashed when I did a "sudo bash".
The sudo and bash executables were on a ccd'd partition.  Here's the
trace:

===
## echo bt | gdb -k kernel.51 vmcore.51
GDB is free software and you are welcome to distribute copies of it
 under certain conditions; type "show copying" to see the conditions.
There is absolutely no warranty for GDB; type "show warranty" for details.
GDB 4.16 (i386-unknown-freebsd), 
Copyright 1996 Free Software Foundation, Inc...
IdlePTD 204000
current pcb at 1e7234
panic: %s: Timed-out command times out again.  SCB = 0x%x

#0  boot (howto=260) at ../../kern/kern_shutdown.c:243
243                                     dumppcb.pcb_cr3 = rcr3();
(kgdb) #0  boot (howto=260) at ../../kern/kern_shutdown.c:243
#1  0xf0114f72 in panic (fmt=0xf01be51f "page fault")
    at ../../kern/kern_shutdown.c:367
#2  0xf01bf086 in trap_fatal (frame=0xf01dce08) at ../../i386/i386/trap.c:742
#3  0xf01beb74 in trap_pfault (frame=0xf01dce08, usermode=0)
    at ../../i386/i386/trap.c:653
#4  0xf01be84f in trap (frame={tf_es = 16, tf_ds = -266534896, 
      tf_edi = -232610304, tf_esi = 0, tf_ebp = -266482092, 
      tf_isp = -266482128, tf_ebx = -232610816, tf_edx = 0, 
      tf_ecx = -232963584, tf_eax = -231311104, tf_trapno = 12, tf_err = 0, 
      tf_eip = -267176986, tf_cs = 8, tf_eflags = 66118, tf_esp = 0, 
      tf_ss = -232610816}) at ../../i386/i386/trap.c:311
#5  0xf01333e6 in vget (vp=0xf222a400, lockflag=1) at ../../kern/vfs_subr.c:817
#6  0xf019d3f8 in ffs_sync (mp=0xf2213a00, waitfor=2, cred=0xf1f4c400, 
    p=0xf01f5560) at ../../ufs/ffs/ffs_vfsops.c:819
#7  0xf01348cb in sync (p=0xf01f5560, uap=0x0, retval=0x0)
    at ../../kern/vfs_syscalls.c:357
#8  0xf0114b7d in boot (howto=256) at ../../kern/kern_shutdown.c:181
#9  0xf0114f72 in panic (
    fmt=0xf01d74b0 "%s: Timed-out command times out again.  SCB = 0x%x\n")
    at ../../kern/kern_shutdown.c:367
#10 0xf01d7776 in ahc_timeout (arg=0xf21cf340)
    at ../../i386/scsi/aic7xxx.c:2797
#11 0xf010cb7c in softclock () at ../../kern/kern_clock.c:715
===

Hope this helps.

Satoshi