cvs commit: src/sys/kern kern_lockf.c

Jeff Roberson jeff at
Wed Mar 19 00:13:24 PDT 2008

jeff        2008-03-19 07:13:24 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             kern_lockf.c 
   - Fix the last of the threading bugs that were introduced as far back as
     1.38 in 2001.  Break out of the FOREACH_THREAD_IN_PROC loop when we've
     discovered a new proc in the chain.
   - Increment i and check for maxlockdepth once per matching process not
     once per thread.  This didn't properly terminate the loop before.
   - Fix a bug which has existed potentially since rev 1.1.  waitblock->lf_next
     can be NULL when a thread has been woken-up but not yet scheduled.  Check
     for this condition rather than blindly dereferencing.
  Found by:       libMicro
  Revision  Changes    Path
  1.59      +12 -6     src/sys/kern/kern_lockf.c

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