Quoting Pierre Letouzey <Pierre.Letouzey@pps.jussieu.fr>:

> *** The issue: ***
>
> On both IP20 and IP22 machines, with netbsd 3.0.1, kernel
> GENERIC32_IP2x (ecoff flavour), I obtain a kernel crash when running
> an application test_triv obtained from the following file ...
>
> ------------------ test_triv.s ------------------------
>         .text
>         .align 2
>         .globl  __start
>
> __start:
>         li $2,1    # $v0 = 1 i.e. syscall exit
>         syscall
> --------------------------------------------------------
>
> ... and compiled in the following way:
>
>   gcc -nostdlib -mno-abicalls -fno-pic -static -o test_triv test_triv.s
>
> Here is the displayed messages when the crash occurs:
>
> TLB miss (load or instr. fetch) in kernel mode
> status=0xff23, cause=0x20000008, epc=0x0, vaddr=0x0
> pid=447 cmd=test_triv usp=0x7fffde10 ksp=0xc41b7e78
> Stopped in pid 447.1 (test_triv) at     0:     invalid address.

Ick. Can you get a backtrace ('bt' command)? I don't have the  
resources here to work on this problem, but perhaps we can track down  
what's going on. You'll probably need to compile a kernel with  
debugging enabled in order to make sense of the EPC value.

[snip]

> PPS: I've seen that the preferred way to report bugs is via the
> send-pr tool, but my netbsd experimental systems have no configured
> mailer...

There's a web-based form:

http://www.netbsd.org/cgi-bin/sendpr.cgi?gndb=netbsd

Steve