[Debian-ha-maintainers] Bug#950476: corosync: large messages are corrupted under heavy load

[Ferenc Wágner]

Package: corosync
Version: 3.0.1-2
Severity: important
Forwarded: https://bugzilla.redhat.com/show_bug.cgi?id=1765025
Control: fixed -1 3.0.3-1

Only happens when using knet as the transport as the MTU size is set
larger than the allowed knet buffer size for some large packets.

The actual impact depends on the message that gets corrupted, so possible
effects could be unexpected behaviour, hangs or fencing. If it's a
pacemaker message then it will probably be resent as pacemaker checksums
its messages.

Fix: https://github.com/corosync/corosync/commit/ee8b8993d98b3f6af9c058194228fc534fcd0796