*** This bug is a duplicate of bug 1840076 ***
https://bugs.launchpad.net/bugs/1840076
Bug entry #1845033 also affects Xenial (16.04) and Trusty (14.04 HWE) v4.4
kernels.
Is it possible to backport the fix to 4.4 kernels as well?
Actually I believe this should have been material for 4.4/4.9 mainline stable
trees in the first place.
Relates to following fix:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.2.21&id=d10e0cc113c9e1b64b5c6e3db37b5c839794f3df
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https://bugs.launchpad.net/bugs/1845033
Title:
xenbus: Avoid deadlock during suspend due to open transactions
Status in linux package in Ubuntu:
Confirmed
Bug description:
[Impact]
Xen guests may hang during resume after a migration or suspend.
[Test Case]
Create a Xen guest and run this script and then suspending the VM:
import pyxs, time
c = pyxs.client.Client(xen_bus_path="/dev/xen/xenbus")
c.connect()
c.transaction()
time.sleep(3600)
[Fix]
The following upstream commit fixes the issue:
"xenbus: Avoid deadlock during suspend due to open transactions"
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d10e0cc113c9e1b64b5c6e3db37b5c839794f3df
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