Jeremy Fitzhardinge wrote:
Eric Dumazet wrote:
mmap()/brk() must give fresh NULL pages, but maybe
madvise(MADV_DONTNEED) can relax this requirement (if the pages were
reclaimed, then a page fault could bring a new page with random content)
Only if those pages were originally from that process. Otherwise you've
got a bit of an information leak there.
Or from another process by the same user, in the same security
context. That gets a bit more complex though :)
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