cvs commit: src/sys/kern vfs_bio.c

[Peter Edwards]

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