kfence: use better stack hash seed

As of the prior commit, the RNG will have incorporated both a cycle
counter value and RDRAND, in addition to various other environmental
noise. Therefore, using get_random_u32() will supply a stronger seed
than simply using random_get_entropy(). N.B.: random_get_entropy()
should be considered an internal API of random.c and not generally
consumed.

Cc: Alexander Potapenko <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: Andrew Morton <[email protected]>
Reviewed-by: Marco Elver <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>

0 files changed, 0 insertions, 0 deletions