Re: RE: Overcommit and calloc()

[Matthew Dillon]

:Hi,
:
:At 1:28 pm -0400 20/7/99, Kelly Yancey wrote:
:>[...]
:>  On recent thought though, I seem to recall having read in the 4.4BSD
:>Daemon book that having the kernel zero memory is not the preferred
:>practice, but present because when they tried to stop many progrems dies
:>which assumed memory was initialized to zero.
:
:Handing out unzeroed memory is a potential security hole.
:
:--
:Bob Bishop              (0118) 977 4017  international code +44 118
:[EMAIL PROTECTED]        fax (0118) 989 4254  between 0800 and 1800 UK

    It should also be noted that unless your system is entirely cpu-bound,
    there is no cost to the kernel to zero memory because it pre-zero's
    pages in its idle loop.

                                        -Matt
                                        Matthew Dillon 
                                        <[EMAIL PROTECTED]>


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