Subject: Re: Is this kernel fault OK?
To: None <>
From: D'Arcy J.M. Cain <>
List: tech-kern
Date: 07/09/2003 06:37:51
On Thursday 26 June 2003 12:39, D'Arcy J.M. Cain wrote:
> syslogd:unknown property name 'local0'
> kernel page fault trap code = 0
> stop at NetBSD:syn_cache_get+0x308:movl0(%edx),%ecx
> db>

I built a debugging kernel and now when it crashes I get this:

panic: kernel diagnostic assertion "ia != NULL" failed 
"../../../../netinet/tcp_input.c", line 3150
Stopped at netbsd:breakpoint_0x4: movl %ebp,%esp

I have built userland too so everything is in sync.  The code in question is:

    case AF_INET:
        if (inp) {
            struct in_ifaddr *ia;
            inp->inp_laddr = ((struct sockaddr_in *)dst)->sin_addr;
            inp->inp_lport = ((struct sockaddr_in *)dst)->sin_port;
            inp->inp_options = ip_srcroute();
            INADDR_TO_IA(inp->inp_laddr, ia);
            KASSERT(ia != NULL);
            KASSERT(inp->inp_ia == NULL);
            inp->inp_ia = ia;
            LIST_INSERT_HEAD(&ia->ia_inpcbs, inp, inp_ialink);
            in_pcbstate(inp, INP_BOUND);
            if (inp->inp_options == NULL) {
                inp->inp_options = sc->sc_ipopts;
                sc->sc_ipopts = NULL;

So, I want to add some more debugging lines to find out where the bad value is 
coming from.  Anyone have any ideas as to what I could print there?  I'm kind 
of over my head in this code.

D'Arcy J.M. Cain <>