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From: Peter Wemm <peter@FreeBSD.org>
Date: Sun, 7 Dec 2008 02:32:49 +0000 (UTC)
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Subject: cvs commit: src/lib/libthr/thread thr_rtld.c
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peter       2008-12-07 02:32:49 UTC

  FreeBSD src repository

  Modified files:
    lib/libthr/thread    thr_rtld.c 
  Log:
  SVN rev 185728 on 2008-12-07 02:32:49Z by peter
  
  When libthr and rtld start up, there are a number of magic spells cast
  in order to get the symbol binding state "just so".  This is to allow
  locking to be activated and not run into recursion problems later.
  
  However, one of the magic bits involves an explicit call to _umtx_op()
  to force symbol resolution.  It does a wakeup operation on a fake,
  uninitialized (ie: random contents) umtx.  Since libthr isn't active, this
  is harmless.  Nothing can match the random wakeup.
  
  However, valgrind finds this and is not amused.  Normally I'd just
  write a suppression record for it, but the idea of passing random
  args to syscalls (on purpose) just doesn't feel right.
  
  Revision  Changes    Path
  1.10      +1 -1      src/lib/libthr/thread/thr_rtld.c