Date: Sat, 17 Jun 2000 20:14:09 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: Donn Miller <dmmiller@cvzoom.net> Cc: "Jordan K. Hubbard" <jkh@zippy.osd.bsdi.com>, Peter Wemm <peter@netplex.com.au>, van.woerkom@netcologne.de, current@FreeBSD.ORG Subject: Re: GENERIC from today does not detect system console on my box Message-ID: <200006180314.UAA69035@apollo.backplane.com> References: <Pine.BSF.4.21.0006172153090.299-100000@lc210.cvzoom.net>
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:> My test box, with a pristine 5.x kernel, crashes on boot... it only
:> gets a few lines in, prints the amount of memory the machine has,
:> and BEWM. Low memory page fault.
:
:I saw the same thing myself. It turns out, though, that I was using
:
:COPTFLAGS= -march=pentium -Os -pipe
:
:to compile my kernel. When I used the stock opt flags of
:
:COPTFLAGS= -O -pipe
:
:to compile my kernel, my machine booted OK. It appears as though some
Yes, that works for me. But I don't think it's the optimizer that's
causing the problem.
Even though I couldn't get a stack backtrace I was able to look at the
stack in hex, and wonud up with:
c02347f0 t none_saver
c02347f8 T sc_probe_unit
c0234844 t scvidprobe
c0234870 t sckbdprobe
c02348a0 t adapter_name
Fault at 0x60 ( IP = 0x60 ... indirect jump through NULL obviously)
0xc0333f04
0xc0333f24
...
0xc023485b <------- inside scvidprobe
...
0xc02a9aa0 <------- sc_consdev structure
...
0xc0333f4c
...
It looks like sccnattach() is calling scvidprobe() and scvidprobe()
is then:
0xc023484b <scvidprobe+7>: cmpl $0x0,0x10(%ebp)
0xc023484f <scvidprobe+11>: setne %al
0xc0234852 <scvidprobe+14>: movzbl %al,%eax
0xc0234855 <scvidprobe+17>: push %eax
0xc0234856 <scvidprobe+18>: call 0xc0229c90 <vid_configure> <----****
0xc023485b <scvidprobe+23>: push %ebx
0xc023485c <scvidprobe+24>: push $0xc0282682
0xc0234861 <scvidprobe+29>: call 0xc0229b4c <vid_find_adapter>
Calling vid_configure and vid_configure is dying.
The list is generated from a linker_set ... one of those special linker
lists.
Something's broken the list.... maybe the DATA_SET macro is something ilke
that.
-Matt
Matthew Dillon
<dillon@backplane.com>
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