4.19.5 and later has tons of false messages "BUG: non-zero pgtables_bytes on freeing mm: -16384"

[Christian Borntraeger]

Martin,

Right now you get a message 
"BUG: non-zero pgtables_bytes on freeing mm: -16384"
for EVERY process that exits in 4.19.5 and later.

bisect points to 
commit 4136161d676a93fc8df6bdb80d720c15522d6c24
Author: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Date:   Mon Oct 15 11:09:16 2018 +0200

    s390/mm: fix mis-accounting of pgtable_bytes
    
    [ Upstream commit e12e4044aede97974f2222eb7f0ed726a5179a32 ]

Turns out that this patch requires several dependencies so the autoselection of this
patch was missing that. 

Can we either revert this patch or add the dependencies?

Christian