On Thu, Dec 27, 2018 at 10:06:09PM +0100, Christian Borntraeger wrote:
On 12/27/2018 10:01 PM, Sasha Levin wrote:
On Thu, Dec 27, 2018 at 10:28:56AM +0100, Christian Borntraeger wrote:
On 27.12.2018 10:13, Christian Borntraeger wrote:
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@de.ibm.com 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
It seems that adding
commit 6d212db11947ae5464e4717536ed9faf61c01e86 ("mm: add mm_pxd_folded checks to pgtable_bytes accounting functions") fixes the issue.
I've queued 6d212db11947 for 4.19 for now, thank you.
Not sure, but you might need 1071fc5779d98 mm: introduce mm_[p4d|pud|pmd]_folded a8874e7e8a889 mm: make the __PAGETABLE_PxD_FOLDED defines non-empty
to avoid compile errors on !s390.
Queued those for 4.19 as well, build looks clean.
-- Thanks, Sasha