Re: [patch v2] madvise.2: Add MADV_WIPEONFORK documentation

On Tue, 2017-09-19 at 21:07 +0200, Michael Kerrisk (man-pages) wrote:

Thanks. I applied this, and tweaked the madvise.2 text a little, to
read as follows (please let me know if I messed anything up):

       MADV_WIPEONFORK (since Linux 4.14)
              Present the child process with zero-filled
memory  in  this
              range  after  a fork(2).  This is useful in forking
servers
              in order to ensure that  sensitive  per-
process  data  (for
              example,  PRNG  seeds, cryptographic secrets, and so
on) is
              not handed to child processes.

              The MADV_WIPEONFORK operation can be applied
only  to  pri‐
              vate anonymous pages (see mmap(2)).

That looks great. Thank you, Michael!

-- 
All rights reversed