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Date: Mon, 27 Aug 2001 04:16:13 -0700 (PDT)
From: Oliver Blasnik <o.blasnik@nextra.de>
To: freebsd-gnats-submit@FreeBSD.org
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Subject: kern/30125: btx/bootloader dumps very often if serial remote console enabled
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>Number:         30125
>Category:       kern
>Synopsis:       btx/bootloader dumps very often if serial remote console enabled
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Aug 27 04:20:00 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Oliver Blasnik
>Release:        4.2, 4.3, 4.4rc
>Organization:
Nextra Germany
>Environment:
FreeBSD mailin1-a2.ships.nextra.de 4.4-20010815-RC1 FreeBSD 4.4-20010815-RC1 #0: Fri Aug 24 16:35:19 GMT 2001     root@conf-master.ships.nextra.de:/usr/src/sys/compile/SHIPS  i386
>Description:
While booting with serial remote console enabled (Intel ISP2150) the bootloader refuses to work very often (before and while loading) and dumps:

FreeBSD/i386 bootstrap loader, Revision 0.8
(murray@scrub.lab.nuxi.com, Thu Aug 16 04:39:51 GMT 2001)
[....]
Loading Mfsroot...
\
int=00000006  err=00000000  efl=00010202  eip=0f00ffff
eax=00000000  ebx=840fa6f3  ecx=0002b680  edx=18550000
esi=000000ff  edi=00021680  ebp=ff0cbd83  esp=000035e4
cs=002b  ds=0033  es=0033    fs=0033  gs=0033  ss=0033
cs:eip=ff ff ff ff ff ff ff ff-ff ff ff ff ff ff ff ff
ss:esp=84 af 00 00 00 c7 45 d0-00 00 00 00 c7 45 d4 00
BTX halted

This is possibly related to pr21559 and not fixed now (after ONE YEAR).
As far as I am using pxeboot and a large (20M) /mfsroot, it's nearly impossible to get a system booting up. I tried the loaders from 4.2, 4.3 and 4.4rc1.
>How-To-Repeat:
Enable serial remote console and boot.
>Fix:
Disable serial remote console.
>Release-Note:
>Audit-Trail:
>Unformatted:

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