Bug Report ... Please Forward

From: Brian M. Sutin (sutin@ociw.edu)
Date: Sun Aug 18 2002 - 16:20:20 EST

Hello! I have found what I think to be a hardware compatibility bug
with the basic operation of the kernel. I would appreciate if you
could put me into contact with people who would be most interested in
fixing this bug, as my participation will probably be necessary to
solve the problem. Here is the report:

Short Summary:

On a Toshiba Libretto 70CT, the 2.4.18-3 kernel boots up until freeing
the extra kernel memory. After this, the execve to /sbin/init returns
success, but /sbin/init does not run.

Long Version:

The Toshiba Libretto 70CT has a 586 with MMX processor. It runs vanilla
Redhat 6.2 fine (I forgot the kernel version, sorry...). It will not
run Redhat 7.0 (kernel 2.2.late) or Redhat 7.3 (2.4.18-3), so the bug
has existed for quite some time. The problem is that, on boot, I see:

    ...previous stuff...
    Freeing unused kernel memory: (some number)
    ...hangs forever here...

I tried having the kernel run the shell instead, but that did not work
either. I also recompiled /sbin/init to print out a message to stderr
first off, but nothing appeared.

I recompiled the kernel and started adding printk debugging statements.
I found that search_binary_handler() (from fs/exec.c) returns success.
At this point it is clear to me that I am not going to get any farther
with printk statements.

I also tried to make an a.out executable (rather than an ELF), but the
ld in Redhat is not compiled to create one, and I was unable to figure
out how to configure the recompile of ld to make it do so. If someone
could send me an a.out-style executable of some sort, that would be the
next obvious test.

My info:

Brian Sutin
(626) 304 - 0265
I will be out of town from 2002-08-21 to 2002-08-29.

Brian M. Sutin        Optical Scientist        Pasadena, CA
The Observatories of the Carnegie Institution of Washington
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This archive was generated by hypermail 2b29 : Fri Aug 23 2002 - 22:00:15 EST