--- Comment From alexander.efremk...@de.ibm.com 2016-11-30 12:30 EDT---
Verified with Ubuntu 16.04.1-LTS, the issue can no longer be reproduced.
root@s8330026:~# uname -a
Linux s8330026 4.4.0-51-generic #72-Ubuntu SMP Thu Nov 24 18:29:36 UTC 2016
s390x s390x s390x GNU/Linux
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--- Comment From heinz-werner_se...@de.ibm.com 2016-11-21 08:05 EDT---
Verified , could not be reproduced anymore..
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Title:
--- Comment From geral...@de.ibm.com 2016-10-19 11:41 EDT---
Patch was submitted upstream, should be added in a few days, here is the LKML
discussion link: https://marc.info/?l=linux-kernel&m=147688806928316&w=2
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--- Comment From geral...@de.ibm.com 2016-10-06 09:13 EDT---
We are waiting for review/approval from the genwqe owner fromFrank Haverkamp,
assigning LTC bugzilla to him.
Frank, please handle ASAP in order to meet the current merge window for
4.9.
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--- Comment From alexander.efremk...@de.ibm.com 2016-09-12 10:45 EDT---
(In reply to comment #36)
> Alex, I'll attach a debian kernel package with the patch applied, please
> verify if it also solves the issue for you.
Thanks, with the attached kernel I could not reproduce this issue.
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*** This bug is a duplicate of bug 1572291 ***
https://bugs.launchpad.net/bugs/1572291
--- Comment From geral...@de.ibm.com 2016-09-06 10:21 EDT---
I think I found the bug in the genwqe code:
ddcb_cmd_fixups() -> genwqe_alloc_sync_sgl() (fails in f/lpage, but
sgl->sgl != NULL and f/lp
*** This bug is a duplicate of bug 1572291 ***
https://bugs.launchpad.net/bugs/1572291
--- Comment From geral...@de.ibm.com 2016-09-02 09:22 EDT---
>From the dmesg it looks like this time ext4 page allocation stumbles upon the
>doubly freed page first, but it is immediately after the
*** This bug is a duplicate of bug 1572291 ***
https://bugs.launchpad.net/bugs/1572291
--- Comment From alexander.efremk...@de.ibm.com 2016-09-02 07:48 EDT---
(In reply to comment #29)
> This is the commit. does that help?
>
> https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/lin
--- Comment From heinz-werner_se...@de.ibm.com 2016-08-09 10:12 EDT---
This is the commit. does that help?
https://git.launchpad.net/~ubuntu-
kernel/ubuntu/+source/linux/+git/xenial/commit/?h=master-
next&id=ab72705a2737c90c03d24b91afa10ef1b7403448
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--- Comment From brueck...@de.ibm.com 2016-03-31 06:36 EDT---
Just a heads-up: the root cause for this problem is still under investigation.
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