[Pkg-xmpp-devel] Bug#981480: mod_storage_memory.lua: attempt to concatenate a nil value

[Florian Kreutzer]

Package: prosody-modules
Version: 0.0~hg20190203.b54e98d5c4a1+dfsg-1+deb10u1
Severity: normal
Tags: patch

Dear Maintainer,

Module "mam" was enabled using the "memory" storage.
Initially it was working fine, after some time clients weren't able to exchange
messages any more.

Log of Prosody shows:

Jan 31 18:40:47 ... error   Traceback[c2s]: /usr/lib/prosody/modules/mod_storage_memory.lua:59: attempt to concatenate a nil value
stack traceback:
        /usr/lib/prosody/modules/mod_storage_memory.lua:59: in function 'append'
        /usr/lib/prosody/modules/mod_mam/mod_mam.lua:303: in function '?'
        /usr/lib/prosody/util/events.lua:79: in function </usr/lib/prosody/util/events.lua:75>
        (...tail calls...)
        /usr/lib/prosody/core/stanza_router.lua:180: in function 'core_post_stanza'
        /usr/lib/prosody/core/stanza_router.lua:127: in function 'core_process_stanza'
        /usr/lib/prosody/modules/mod_c2s.lua:276: in function 'func'
        /usr/lib/prosody/util/async.lua:127: in function </usr/lib/prosody/util/async.lua:125>

This is fixed upstream since prosody-0.11.3
https://prosody.im/doc/release/0.11.3
https://issues.prosody.im/1326

Patch:
https://hg.prosody.im/trunk/rev/40ed04014b97

Testing patch based on prosody-modules-0.0~hg20190203.b54e98d5c4a1+dfsg-1+deb10u1
and prosody-0.11.2-1.
So far all is fine.

-- System Information:
[removed info from local system]

Affected system runs buster with all updates