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From: Bruce Cran <brucec@FreeBSD.org>
Date: Thu, 2 Dec 2010 22:19:30 +0000 (UTC)
To: cvs-src-old@freebsd.org
X-FreeBSD-CVS-Branch: HEAD
Subject: cvs commit: src/share/man/man9 bus_space.9 src/sys/amd64/include
 bus.h src/sys/arm/include bus.h src/sys/i386/include bus.h
 src/sys/ia64/include bus.h src/sys/mips/include bus.h
 src/sys/pc98/include bus.h src/sys/powerpc/include bus.h ...
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brucec      2010-12-02 22:19:30 UTC

  FreeBSD src repository

  Modified files:
    share/man/man9       bus_space.9 
    sys/amd64/include    bus.h 
    sys/arm/include      bus.h 
    sys/i386/include     bus.h 
    sys/ia64/include     bus.h 
    sys/mips/include     bus.h 
    sys/pc98/include     bus.h 
    sys/powerpc/include  bus.h 
    sys/sparc64/include  bus.h 
    sys/sun4v/include    bus.h 
  Log:
  SVN rev 216134 on 2010-12-02 22:19:30Z by brucec
  
  Disallow passing in a count of zero bytes to the bus_space(9) functions.
  
  Passing a count of zero on i386 and amd64 for [I386|AMD64]_BUS_SPACE_MEM
  causes a crash/hang since the 'loop' instruction decrements the counter
  before checking if it's zero.
  
  PR:     kern/80980
  Discussed with: jhb
  
  Revision  Changes    Path
  1.6       +3 -0      src/share/man/man9/bus_space.9
  1.18      +18 -12    src/sys/amd64/include/bus.h
  1.12      +59 -8     src/sys/arm/include/bus.h
  1.15      +24 -12    src/sys/i386/include/bus.h
  1.28      +31 -24    src/sys/ia64/include/bus.h
  1.8       +67 -8     src/sys/mips/include/bus.h
  1.10      +9 -7      src/sys/pc98/include/bus.h
  1.22      +69 -11    src/sys/powerpc/include/bus.h
  1.45      +59 -56    src/sys/sparc64/include/bus.h
  1.8       +59 -56    src/sys/sun4v/include/bus.h