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From: Konstantin Belousov <kib@FreeBSD.org>
Date: Wed, 5 Mar 2008 16:34:03 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
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Cc: 
Subject: cvs commit: src/sys/ufs/ffs ffs_vfsops.c
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kib         2008-03-05 16:34:03 UTC

  FreeBSD src repository

  Modified files:
    sys/ufs/ffs          ffs_vfsops.c 
  Log:
  Initialize mnt_stat.f_iosize before autostarting UFS1 extattrs.
  It is normally initialized by ffs_statfs() after ffs_mount finished.
  
  The extattr autostart code calls the ufs_lookup(), that uses value above
  to iterate over the directory blocks, see bmask initialization in the
  ufs_lookup() and ufsdirhash. Having the filesystem with root directory
  spanning more then one block would result in reading a random kernel
  memory.
  
  PR:     kern/120781
  Test case provided by:  rwatson
  MFC after:      1 week
  
  Revision  Changes    Path
  1.338     +1 -0      src/sys/ufs/ffs/ffs_vfsops.c