Description: mm/mempolicy.c: fix error handling in set_mempolicy and mbind
References:
 https://grsecurity.net/the_infoleak_that_mostly_wasnt.php
Notes:
 bwh> As Brad Spengler notes, this doesn't affect amd64.  The compat
 bwh> wrappers are only used for swapping bitmap words on 64-bit
 bwh> architectures that are (or can be) big-endian.  Fixing this on
 bwh> wheezy was a (small) waste of time.
Bugs:
upstream: released (4.11-rc6) [cf01fb9985e8deb25ccf0ea54d916b8871ae0e62]
4.9-upstream-stable: released (4.9.22) [cddab768d13469d1e254fb8c0e1629f93c8dfaca]
3.16-upstream-stable: released (3.16.44) [4474624a1a496e4dc93a2cd49ea915d9c90d80e9]
3.2-upstream-stable: released (3.2.89) [3f3b4a9db31af279e793229177b63ea201e24629]
sid: released (4.9.25-1)
3.16-jessie-security: released (3.16.43-1) [bugfix/all/mm-mempolicy.c-fix-error-handling-in-set_mempolicy-a.patch]
3.2-wheezy-security: released (3.2.88-1) [bugfix/all/mm-mempolicy.c-fix-error-handling-in-set_mempolicy-a.patch]