[parisc-linux] Progress - Update

[John David Anglin]

> GR30 in our case.

GR30 (sp) appears ok.  It had a value of 0xc019e6c0 when the panic
in sem_exit occured.  The panic occured in this code:

        if ((q = current->semsleeping)) {
		if (q->prev)

The value for q (GR20) was 0xfffc5e6c.  Thus, the initialization of
the process task structure needs to be looked at.

I built another kernel without IPC.  In this one, the kernel panic'd
in get_unused_buffer_head.  This one occured because unused_list was
zero.  Again, it looks like there is an initialization problem somewhere.
I think others have reported this problem in the past.  It looks like:

bad address 0000001c (code 15)
Kernel panic: bad address

Here is the code:

static struct buffer_head * get_unused_buffer_head(int async)
{
        struct buffer_head * bh;

	recover_reusable_buffer_heads();
	if (nr_unused_buffer_heads > NR_RESERVED) {
		bh = unused_list;
		unused_list = bh->b_next_free;

Dave
-- 
J. David Anglin                                  dave.anglin@nrc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6605)