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From: Konstantin Belousov <kib@FreeBSD.org>
Date: Wed, 10 Jun 2009 13:57:36 +0000 (UTC)
To: cvs-src-old@freebsd.org
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Subject: cvs commit: src/sys/fs/cd9660 cd9660_vnops.c src/sys/fs/devfs
 devfs_vnops.c src/sys/fs/pseudofs pseudofs_vnops.c
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kib         2009-06-10 13:57:36 UTC

  FreeBSD src repository

  Modified files:
    sys/fs/cd9660        cd9660_vnops.c 
    sys/fs/devfs         devfs_vnops.c 
    sys/fs/pseudofs      pseudofs_vnops.c 
  Log:
  SVN rev 193919 on 2009-06-10 13:57:36Z by kib
  
  VOP_IOCTL takes unlocked vnode as an argument. Due to this, v_data may
  be NULL or derefenced memory may become free at arbitrary moment.
  
  Lock the vnode in cd9660, devfs and pseudofs implementation of VOP_IOCTL
  to prevent reclaim; check whether the vnode was already reclaimed after
  the lock is granted.
  
  Reported by:    georg at dts su
  Reviewed by:    des (pseudofs)
  MFC after:      2 weeks
  
  Revision  Changes    Path
  1.122     +17 -6     src/sys/fs/cd9660/cd9660_vnops.c
  1.180     +10 -2     src/sys/fs/devfs/devfs_vnops.c
  1.78      +22 -6     src/sys/fs/pseudofs/pseudofs_vnops.c