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Subject: panic: softdep_deallocate_dependencies: dangling deps

Help! I'm running 1.5 on K6-2/400 256MB 45G IDE disk w/softdeps on.

I had created a file a little larger than 2^32 bytes and was copying it
various ways: cp, cat, and finally trying to use "dd" - that's when the
panic happened.  


$ cat 4GB >4g2

$ ls -l 4*
7148403 -rw-r--r--  1 mac  wheel  4,452,539,200 Feb 25 20:56 4GB
7148404 -rw-r--r--  1 mac  wheel  4,452,539,200 Feb 25 21:53 4g2

$ df
Filesystem  1024-blocks     Used    Avail Capacity  Mounted on
/dev/wd0a        274487    50831   209931    19%    /
/dev/wd0e      41742980 23905920 15749911    60%    /usr
mfs:105          120887        3   114839     0%    /tmp
kernfs                1        1        0   100%    /kern

$ dd if=4GB of=4g3

This is where it crashed.  At the time, here is what "top" was displaying
in another window:


load averages:  2.16,  2.23,  2.14                                     22:14:33
47 processes:  2 runnable, 40 sleeping, 4 stopped, 1 on processor
CPU states:  4.0% user, 60.4% nice, 31.7% system,  3.0% interrupt,  1.0% idle
Memory: 82M Act, 2788K Inact, 376K Wired, 140M Free, 513M Swap free

  PID USERNAME PRI NICE   SIZE   RES STATE     TIME   WCPU    CPU COMMAND
 1216 mac      104   20    17M   16M run     127.7H 56.35% 56.35% setiathome
29504 mac       -5    0    72K   72K sleep     8:07 34.28% 34.28% dd
  276 root       4  -20    37M   37M sleep    20.6H  5.96%  5.96% ntop
  259 root     -12  -20   212K  668K onproc   11:37  0.00%  0.00% top
 4824 root       2    0   268K 1084K run       0:13  0.00%  0.00% sshd

The Kernel Debugger says:

panic: softdep_deallocate_dependencies: dangling deps
Stopped in dd at cpu_debugger+0x4    leave

"ps" to the debugger for the "dd" process yields:

PID 29504  PPID 284  PGRP 29504  UID 1000  S 7  Flags 0x4006

"show registers" produces:

es	0x10
ds	0x10
edi	0xc0261700 vm_rfc1048+0x3440
ebp	0xd2460c54
ebx	0xd2460c74
edx	0xc0250fe0 vga_stdscreen
ecx	0x4c000
eax	0
eip	0xc01fc6ac cpu_Debugger+0x4
cs	8
eflags	0x202
esp	0xd2460c54
ss	0xc0260010 kernel_map_entry.126+0x10df0
-----------------------------------------------------------------------------

I have not rebooted the machine, and can type at the debugger to get
additional information.

Thanks for all help!

-Mike