[Bug-hurd] Bug#71781: Bug-hurd] Bug#71781: [hurd] dh_compress causes kernel panic

[Roland McGrath]

> I rebuilt the kernel to include floppy support.  This time, I got the
> expected result, a panic.  The result of addr2line is: 
> 
> /gnumach/build/i386/linux/../../../i386/linux/../../linux/dev/glue/block.c:940
> 
> This is the function init_partition as previously reported.

Well, that line number has no code on it, so it's hard to tell exactly
where the PC value really lines.  Can you run gdb on your binary, do "info
line *PC" and "disas PC" and send me the output?  It looks like it must be
either a null pointer in thread->pcb (which would be some bad corruption),
or a null pointer as the PART argument.  You could insert printfs to see
what is up.