pppoa and RELENG_6 and bug report usb/83504

[Bob Parkinson]

Hi,

I did an upgrade yesterday, the only problem I've had is with pppoa2. I 
can see an open bug report (usb/83504) that seem to be similar to my 
problem (eg. message of form "Purging 2 threads from ugen.0", and a system 
crash when booting), but I 
don't see anyone else here with the problem. I've had to go back to my 5.4 
backup as my system is useless with pppoa2. Am I alone? The priority is

chunk of dmesg:

Rebooting...
Copyright (c) 1992-2005 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
         The Regents of the University of California. All rights reserved.
FreeBSD 6.0-STABLE #0: Thu Nov 17 17:03:52 GMT 2005
     root at xxxxxxxxxxxx:/usr/obj/usr/src/sys/GENERIC
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: AMD Athlon(tm)  (1247.59-MHz 686-class CPU)
   Origin = "AuthenticAMD"  Id = 0x681  Stepping = 1

Features=0x383fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>
   AMD Features=0xc0400800<SYSCALL,MMX+,3DNow+,3DNow>
real memory  = 536805376 (511 MB)
avail memory = 515960832 (492 MB)
ACPI APIC Table: <AMIINT VIA_K7  >
byte 9332ar0: disk1 READY (mirror) using ad6 at ata3-master
Trying to mount root from ufs:/dev/ad0s1a
All threads purged from ugen0.1
All threads purged from ugen0.5
All threads purged from ugen0.1
All threads purged from ugen0.5
All threads purged from ugen0.6
All threads purged from ugen0.7
Purging 2 threads from ugen0.1
Purging 2 threads from ugen0.1
Purging 2 threads from ugen0.1


Fatal trap 12: page fault while in kernel mode
fault virtual address   = 0x0
fault code              = supervisor read, page not present
instruction pointer     = 0x20:0xc06113fb
stack pointer           = 0x28:0xd5702b2c
frame pointer           = 0x28:0xd5702b34
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         = 232 (pppoa2)
trap number             = 12
panic: page fault
Uptime: 44s
Cannot dump. No dump device defined.
Automatic reboot in 15 seconds - press a key on the console to abort
Rebooting...

Cheers,

Bob