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Date: Sat, 1 Nov 1997 19:14:19 -0500 (EST)
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From: cgull+usenet-878428029@smoke.marlboro.vt.us (john hood)
To: Julian Elischer <julian@whistle.com>
Cc: current@FreeBSD.ORG
Subject: Anyone else see this  (broken ddb)?
In-Reply-To: <Pine.BSF.3.95.971031003336.10876A-100000@current1.whistle.com>
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Julian Elischer writes:
 > 
 > boot a new -current kernel with:
 > 
 > Boot: -sd
 > 
 > when the kernel comes to a stop in the debugger add:
 > 
 > break vfs_mountrootfs
 > cont
 > 
 > when the system breaks on vfs_mountrootfs()
 > try
 > 
 > trace
 > 
 > or 
 > 
 > step
 > 
 > and get more pagefaults..
 > 
 > Does any one else see this?
 > (I updates my sources today)

It's a rather smart Heisenbug.

I'm trying to track down some IDE problems (probably hardware), so I
try using the early-boot debugger, with 'boot -sd'.  No matter what I
do in the debugger-- even just immediately continue out of it-- the
kernel fails to detect my IDE drives and panics on not finding a root
fs.  If I set a breakpoint, after the breakpoint is hit, I get
pagefaults when I give any command.

I think this bug knows where I live.

I saw this about a week ago then got tied up by other things.

  --jh

-- 
Mr. Belliveau said, "the difference was the wise,       John Hood,     cgull
intelligent look on the face of the cow."  He was      	                   @
*so* right.  --Ofer Inbar                               smoke.marlboro.vt.us