From owner-cvs-all  Mon Aug 23 22:58:55 1999
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From: Brian Feldman <green@FreeBSD.org>
Date: Mon, 23 Aug 1999 22:58:36 -0700 (PDT)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/vm vm_swap.c
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green       1999/08/23 22:58:36 PDT

  Modified files:
    sys/vm               vm_swap.c 
  Log:
  When the SYSINIT() was removed, it was replaced with a make_dev on-demand
  creation of /dev/drum via calling swapon. However, the make_dev has a
  bogus (insofar that it hasn't been added yet) cdevsw, so later we end
  up crashing with a null pointer dereference on the swap vp's specinfo.
  The specinfo points to a dev_t with a major of 254 (uninitialized), and
  we get a crash on its d_strategy being called.
  
  The simple solution to this is to call cdevsw_add before the make_dev
  is ever used. This fixes the panic which occurred upon swapping.
  
  Revision  Changes    Path
  1.83      +2 -1      src/sys/vm/vm_swap.c



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