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From: Peter Edwards <peadar@FreeBSD.org>
Date: Thu, 29 Sep 2005 10:37:20 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
X-FreeBSD-CVS-Branch: HEAD
Cc: 
Subject: cvs commit: src/sys/kern vfs_bio.c
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peadar      2005-09-29 10:37:20 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             vfs_bio.c 
  Log:
  Close a race in biodone(), whereby the bio_done field of the passed
  bio may have been freed and reassigned by the wakeup before being
  tested after releasing the bdonelock.
  
  There's a non-zero chance this is the cause of a few of the crashes
  knocking around with biodone() sitting in the stack backtrace.
  
  Reviewed By: phk@
  
  Revision  Changes    Path
  1.494     +5 -3      src/sys/kern/vfs_bio.c