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From: Edward Tomasz Napierala <trasz@FreeBSD.org>
Date: Fri, 6 Feb 2009 17:14:07 +0000 (UTC)
To: cvs-src-old@freebsd.org
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Subject: cvs commit: src/sys/ufs/ffs ffs_alloc.c
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trasz       2009-02-06 17:14:07 UTC

  FreeBSD src repository

  Modified files:
    sys/ufs/ffs          ffs_alloc.c 
  Log:
  SVN rev 188240 on 2009-02-06 17:14:07Z by trasz
  
  When a device containing mounted UFS filesystem disappears, the type
  of devvp becomes VBAD, which UFS incorrectly interprets as snapshot
  vnode, which in turns causes panic.  Fix it by replacing '!= VCHR'
  with '== VREG'.
  
  With this fix in place, you should no longer be able to panic the system
  by removing a device with an UFS filesystem mounted from it - assuming
  you don't use softupdates.
  
  Reviewed by:    kib
  Tested by:      pho
  Approved by:    rwatson (mentor)
  Sponsored by:   FreeBSD Foundation
  
  Revision  Changes    Path
  1.152     +4 -4      src/sys/ufs/ffs/ffs_alloc.c