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From: Robert Watson <rwatson@FreeBSD.org>
Date: Mon, 28 Feb 2005 14:04:09 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org,
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X-FreeBSD-CVS-Branch: HEAD
Subject: cvs commit: src/sys/net bpf.c
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rwatson     2005-02-28 14:04:09 UTC

  FreeBSD src repository

  Modified files:
    sys/net              bpf.c 
  Log:
  In bpf_setf(), protect against races between multiple user threads
  attempting to change the BPF filter on a BPF descriptor at the same
  time: retrieve the old filter pointer under the same locked region
  as setting the new pointer.
  
  MFC after:      3 days
  
  Revision  Changes    Path
  1.144     +2 -1      src/sys/net/bpf.c