[Bug 202978] After upgrade of net/syncthing 0.11.18 -> 0.11.23 in jail, the jail causes entire host to crash

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=202978

Peter Wemm <peter at FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |peter at FreeBSD.org

--- Comment #1 from Peter Wemm <peter at FreeBSD.org> ---
syncthing does something strange with its use of local ipv6 multicast and
crashes the kernel when it exits.  This is definitely a kernel bug - userland
apps should not be able to crash the kernel, even if they are doing something
odd.

In the meantime, you can work around it by DISABLING local announce.

If you can't do it through the UI, you can do it by editing the config.xml
while syncthing is not running.  Normally it is in
~/.config/syncthing/config.xml but you can configure it to be elsewhere.

change:
        <localAnnounceEnabled>true</localAnnounceEnabled>
to
        <localAnnounceEnabled>false</localAnnounceEnabled>

When you next start up syncthing, it won't do the weird thing with this line:
        <localAnnounceMCAddr>[ff32::5222]:21026</localAnnounceMCAddr>
.. which is causing the kernel panic.

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