7.1 new install halts on BTX error

[David Adam]

I upgraded my 7.0 system to 7.1-RELEASE with freebsd-update only to find 
that it no longer boots correctly, instead crashing with a BTX backtrace. 
If I break to the loader prompt and use 'ls /boot', I also get a 
backtrace.

A new install of 7.1 on this hardware using a separate SCSI card and drive 
array also leads to a BTX backtrace. I have copied this below as the first 
(most repeatable) error and also included the other problems.

A fresh install of 7.0 works fine. FreeSBIE 1.0, based on FreeBSD 5.3, 
also boots fine and will happily list the contents of the original drive's 
/boot in the loader, although refuses to load the kernel. The FreeBSD 7.1 
install CD also boots and allows me to install over FTP.

I have run into BTX problems on this machine before under -CURRENT (see 
http://lists.freebsd.org/pipermail/freebsd-current/2008-October/089460.html
). Dmesg from 7.0 in 
http://www.freebsd.org/cgi/query-pr.cgi?prp=125769-1-txt&n=/patch.txt

A new install of 7.1-RELEASE on separate disks leads to this backtrace:
int=0000000d  err=00001840  efl=00010207  eip=00000511
eax=04551364  ebx=00000000  ecx=00495cae  edx=00495cae
esi=00000009  edi=00000001  ebp=00000000  esp=00495cae
cs=002b  ds=0033  es=0033    fs=0033  gs=0033  ss=0033
cs:eip=17 00 00 00 00 00 00 0c-00 00 00 00 00 00 00 b9
       ae 5c 49 00 00 00 00 b9-ae 5c 49 00 00 00 00 c8
ss:esp=43 18 3c 01 74 08 3c 04-0f 85 e4 00 00 00 0f b6
       43 19 88 86 94 00 00 00-c7 46 30 00 00 00 00 3c

BTX error on boot with the 7.0 partition that has been upgraded to 7.1:

int=0000000d  err=00000000  efl=00010a92  eip=00000430
eax=ffffff4c  ebx=00006c94  ecx=00000001  edx=00000080
esi=00000001  edi=ffff9416  ebp=00000000  esp=0008f8b4
cs=002b  ds=0033  es=002b    fs=0033  gs=0033  ss=0033
cs:eip=6c 7f 94 48 00 00 00 00-0f af c1 47 00 00 00 00
       00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00
ss:eip=2b 00 00 00 33 00 00 00-00 0c 04 00 5f ad 08 04
       00 00 00 00 0f 00 00 00-00 00 00 00 24 1c 06 00
BTX halted

If I break to the loader prompt and try 'ls /boot', I get this backtrace:

int=00000006  err=00000000  efl=00010203  eip=00040c08
eax=000000c6  ebx=00000008  ecx=eb000000  edx=000000c6
esi=00000004  edi=000000c2  ebp=00000000  esp=0008f8b4
cs=002b  ds=0033  es=002b    fs=0033  gs=0033  ss=0033
cs:eip=8f 49 40 00 94 49 00 cb-00 00 04 00 00 00 fc 07
       80 00 00 00 04 00 00 00-94 49 00 00 00 00 00 00
ss:eip=00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00
       00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00
BTX halted

Any thoughts or suggestions? I will stay on 7.0 for now but have a fairly 
large supply of spare drives so I can test new installs if required.

Thanks,

David Adam
zanchey at ucc.gu.uwa.edu.au