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From: Martin Blapp <mbr@FreeBSD.org>
Date: Tue, 19 Sep 2006 19:25:11 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
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Subject: cvs commit: src/sys/kern kern_proc.c
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mbr         2006-09-19 19:25:11 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             kern_proc.c 
  Log:
  Fix races between tty.c and sessrele() / doenterpgrp() / leavepgrp(). The tty
  code is still under giant lock, but the session/pgrp release code just used
  proctree_locks. This explains why moving the proctree_lock in sys/kern/tty.c
  rev. 1.258 did fix the panics in our SMP systems.
  
  This should also fix some race panics with revoked ttys.
  
  Reviewed by:    jhb
  MFC after:      1 week
  
  Revision  Changes    Path
  1.241     +6 -0      src/sys/kern/kern_proc.c