cvs commit: src/sys/kern tty_tty.c

[Konstantin Belousov]

kib         2007-07-03 17:46:37 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             tty_tty.c 
  Log:
  Lock Giant and proctree lock around dereferencing p_session->s_ttyvp->v_rdev.
  Lock cdev mutex too to close the race with tty being freed.
  Relock clone_drain_lock to prevent the LOR with proctree lock, thus
  add #include <fs/devfs/devfs_int.h>.
  
  Suggested by:   tegge
  Debugging help and testing by:  Peter Holm
  Approved by:    re (kensmith)
  
  Revision  Changes    Path
  1.60      +13 -1     src/sys/kern/tty_tty.c