This bug was fixed in the package linux-aws - 5.4.0-1071.76
---------------
linux-aws (5.4.0-1071.76) focal; urgency=medium
* focal/linux-aws: 5.4.0-1071.76 -proposed tracker (LP: #1966242)
* AWS: Hibernate resume crashes when platform changes (LP: #1965002)
- PM: hibernate: Allow ACPI hardware signature to be honoured
- PM: hibernate: Honour ACPI hardware signature by default for virtual
guests
[ Ubuntu: 5.4.0-107.121 ]
* focal/linux: 5.4.0-107.121 -proposed tracker (LP: #1966275)
* CVE-2022-27666
- esp: Fix possible buffer overflow in ESP transformation
* CVE-2022-1055
- net: sched: fix use-after-free in tc_new_tfilter()
* Pick fixup from v5.4.176 upstream stable release to address cert
failure with clock jitter test in NUC7i3DNHE (LP: #1964204)
- Bluetooth: refactor malicious adv data check
-- Tim Gardner <tim.gard...@canonical.com> Mon, 28 Mar 2022 08:40:36
-0600
** Changed in: linux-aws (Ubuntu Focal)
Status: Fix Committed => Fix Released
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2022-1055
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2022-27666
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https://bugs.launchpad.net/bugs/1965002
Title:
AWS: Hibernate resume crashes when platform changes
Status in linux-aws package in Ubuntu:
Fix Committed
Status in linux-aws source package in Focal:
Fix Released
Status in linux-aws source package in Impish:
Fix Committed
Status in linux-aws source package in Jammy:
Fix Committed
Bug description:
SRU Justification
[Impact]
At present, if a virt instance is hibernated and restarted in a
different environment, the instance will crash. We have seen
situations where customers have to enable support cases to recover an
instance. The proposed patch is supposed to enable the kernel to
detect the change and reboot the instance instead of crashing. In the
ACPI specification; there is a 'hardware signature' field in the ACPI
tables, and the OS can reboot cleanly if/when that signature changes,
instead of attempting the resume and crashing.
[Fix]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=74d95555
https://lore.kernel.org/lkml/9099d8903e9b2b16daec712acc9aa533fe84d102.ca...@infradead.org/T/#u
[Test Case]
Hibernate an AWS instance, resume on a different platform. Positive
test results from Amazon engineers.
[Where things could go wrong]
Resume currently crashes when a hibernated instance is migrated to a
new machine. It can't get much worse, unless the initial hibernate
fails.
[Other Info]
SF: #00330794
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