Commits
Christian Borntraeger committed b56433cb782
s390/pgtable: Fix check for pgste/storage key handling pte_present might return true on PAGE_TYPE_NONE, even if the invalid bit is on. Modify the existing check of the pgste functions to avoid crashes. [ Martin Schwidefsky: added ptep_modify_prot_[start|commit] bits ] Reported-by: Martin Schwidefky <schwidefsky@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> CC: stable@vger.kernel.org Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>