Initial information

To start, verify a few things. We can be sure this is a crash dump taken from a hang by looking at the panic message that was printed on the console: "panic: zero" means it was forced by someone via the keyboard (either with an L1-A sequence or a Break). We should also verify that it is a 4.1.2 release kernel.

 zatch 11:  strings vmunix.2grep SunOS  SunOS Release 4.1.2 (WRANGLER) #2: Thu Aug 20 18:52:38 CDT 1992  zatch 12:  adb -k vmunix.2 vmcore.2   *panicstr/s  _va_cache_valid+0x367:     zero  ^D  

The address associated with this string is generally not significant; all we are interested in here is the actual string that was printed. adb will try to locate the closest global symbol next to the address we are printing out and use that as the symbolic address to display. In this case, the string is probably in quotes in the middle of some code, so it doesn't really have a name associated with it. adb does a "best guess," but we don't really care.