cvs commit: src/sys/sys event.h src/sys/kern vfs_aio.c

[Jean-Sebastien Pedron]

dumbbell    2008-01-24 17:10:19 UTC

  FreeBSD src repository

  Modified files:
    sys/sys              event.h 
    sys/kern             vfs_aio.c 
  Log:
  When asked to use kqueue, AIO stores its internal state in the
  `kn_sdata' member of the newly registered knote. The problem is that
  this member is overwritten by a call to kevent(2) with the EV_ADD flag,
  targetted at the same kevent/knote. For instance, a userland application
  may set the pointer to NULL, leading to a panic.
  
  A testcase was provided by the submitter.
  
  PR:     kern/118911
  Submitted by:   MOROHOSHI Akihiko <moro at remus.dti.ne.jp>
  MFC after:      1 day
  
  Revision  Changes    Path
  1.237     +6 -4      src/sys/kern/vfs_aio.c
  1.38      +2 -0      src/sys/sys/event.h