[Bug 1891567] Re: [SRU] ceph_osd crash in _committed_osd_maps when failed to encode first inc map
Robie Basak
1891567 at bugs.launchpad.net
Wed Aug 19 13:19:06 UTC 2020
A fix for this is in groovy-proposed (since 15.2.3-0ubuntu2 like Corey
said) but not migrated yet, so I'll adjust that task to Fix Committed so
it doesn't look like the SRU is going in ahead of it.
** Changed in: ceph (Ubuntu Groovy)
Status: Triaged => Fix Committed
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https://bugs.launchpad.net/bugs/1891567
Title:
[SRU] ceph_osd crash in _committed_osd_maps when failed to encode
first inc map
Status in Ubuntu Cloud Archive:
Triaged
Status in Ubuntu Cloud Archive ussuri series:
Triaged
Status in Ubuntu Cloud Archive victoria series:
Triaged
Status in ceph package in Ubuntu:
Fix Committed
Status in ceph source package in Focal:
Triaged
Status in ceph source package in Groovy:
Fix Committed
Bug description:
[Impact]
Upstream tracker: issue#46443 [0].
The ceph-osd service can crash when processing osd map updates.
When the osd encounters a CRC error while processing an incremental
map update, it will request a full map update from its peers. In this
code path, an uninitialized variable was recently introduced and that
will get de-referenced causing a crash.
The uninitialized variable was introduced in nautilus 14.2.10, and
octopus 15.2.1.
[Test Case]
# Inject osd_inject_bad_map_crc_probability = 1
sudo ceph daemon osd.{id} config set osd_inject_bad_map_crc_probability 1
# Trigger some osd map updates by restarting a different osd
sudo systemctl restart osd@{diff-id}
[Other Info]
Upstream has released a fix for this issue in Nautilus 14.2.11. The SRU for this point release is being tracked by LP: #1891077
Upstream has merged a fix for this issue in Octopus [1], but there is
no current release target. The ceph packages in focal, groovy, and the
ussuri cloud archive are exposed to this critical regression.
[0] https://tracker.ceph.com/issues/46443
[1] https://github.com/ceph/ceph/pull/36340
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