<p>We're having the same issue with only one worker</p>
<pre><code>kamcmd> core.info 
{
        version: kamailio 5.0.5
        id: unknown 
        compiler: gcc 4.8.2
        compiled: 
        flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES
}
</code></pre>
<pre><code>Dec 21 05:20:31 kamailio-1889-0 kamailio[4096]: INFO: <script>: Device State URL is 'http://asterisk-green-profile1-foerdc.query.consul:8088/' - ci='33bac93114af7fba0dc7e57382a1e9f4'
Dec 21 05:20:31 kamailio-1889-0 kamailio[4096]: : <core> [core/mem/q_malloc.c:483]: qm_free(): BUG: qm_free: freeing already freed pointer (0x7f01641853a0), called from http_async_client: async_http.c: set_query_params(633), first free http_async_client: http_multi.c: curl_shm_free
(334) - aborting
Dec 21 05:20:31 kamailio-1889-0 kamailio[4142]: CRITICAL: <core> [core/pass_fd.c:277]: receive_fd(): EOF on 58
</code></pre>
<p>I've enabled debug log will try to add more info later</p>

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