Bug 218654

Summary:	Guest VM on Xen dies due to memory leak
Product:	Virtualization	Reporter:	Leonidas Spyropoulos (artafinde)
Component:	Xen	Assignee:	virtualization_xen
Status:	RESOLVED CODE_FIX
Severity:	normal	CC:	artafinde, davem, kuba, kubakici
Priority:	P3
Hardware:	Intel
OS:	Linux
Kernel Version:	6.8.2	Subsystem:
Regression:	Yes	Bisected commit-id:	6c5aa6fc4def
Attachments:	kernel logs

Description Leonidas Spyropoulos 2024-03-28 13:00:53 UTC

Created attachment 306054 [details]
kernel logs

Guest VM which runs 6.8.x kernel on Xen hosts leads to system unstable, kernel ring buffer flooded with "BUG: Bad page state in process <process>"

Full logs attached


Reverting to 6.7.9 solves it.


Similar reports [1] [2]


[1]: https://bbs.archlinux.org/viewtopic.php?pid=2160294
[2]: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2056706

Comment 1 Jakub Kicinski 2024-03-28 15:23:19 UTC

Fix is on the list:
https://lore.kernel.org/all/171154167446.2671062.9127105384591237363.stgit@firesoul/
Should be fixed in 6.9-rc3 and subsequent stable releases.

Comment 2 Leonidas Spyropoulos 2024-03-28 18:49:27 UTC

Thank you - feel free to close this.

Comment 3 Jakub Kicinski 2024-03-29 01:29:47 UTC

Now commit 037965402a01 ("xen-netfront: Add missing skb_mark_for_recycle") in netdev/net, on its way to -rc3.