my shame... I did not do NULL check and that was the reason for crash. With your logging added (processing same body and input PUBLISH as before):
``` Feb 16 08:54:16 0050562c117c /usr/sbin/kamailio[30264]: ERROR: presence [presentity.c:361]: ps_match_dialog_state_from_body(): vstate is terminated, tmp_state is terminated Feb 16 08:54:16 0050562c117c /usr/sbin/kamailio[30264]: ERROR: presence [presentity.c:388]: ps_match_dialog_state_from_body(): do entered Feb 16 08:54:16 0050562c117c /usr/sbin/kamailio[30264]: ERROR: presence [presentity.c:396]: ps_match_dialog_state_from_body(): compared [dialog] with [text] Feb 16 08:54:16 0050562c117c /usr/sbin/kamailio[30264]: ERROR: presence [presentity.c:399]: ps_match_dialog_state_from_body(): node->next Feb 16 08:54:16 0050562c117c /usr/sbin/kamailio[30264]: ERROR: presence [presentity.c:388]: ps_match_dialog_state_from_body(): do entered Feb 16 08:54:16 0050562c117c /usr/sbin/kamailio[30264]: ERROR: presence [presentity.c:396]: ps_match_dialog_state_from_body(): compared [text] with [dialog] Feb 16 08:54:16 0050562c117c /usr/sbin/kamailio[30264]: ERROR: presence [presentity.c:399]: ps_match_dialog_state_from_body(): node->next Feb 16 08:54:16 0050562c117c /usr/sbin/kamailio[30264]: ERROR: presence [presentity.c:388]: ps_match_dialog_state_from_body(): do entered Feb 16 08:54:16 0050562c117c /usr/sbin/kamailio[30264]: ERROR: presence [presentity.c:396]: ps_match_dialog_state_from_body(): compared [dialog] with [text] Feb 16 08:54:16 0050562c117c /usr/sbin/kamailio[30264]: ERROR: presence [presentity.c:399]: ps_match_dialog_state_from_body(): node->next Feb 16 08:54:16 0050562c117c /usr/sbin/kamailio[30264]: ERROR: presence [presentity.c:388]: ps_match_dialog_state_from_body(): do entered Feb 16 08:54:16 0050562c117c /usr/sbin/kamailio[30264]: ERROR: presence [presentity.c:399]: ps_match_dialog_state_from_body(): node->next Feb 16 08:54:16 0050562c117c /usr/sbin/kamailio[30264]: ERROR: presence [presentity.c:406]: ps_match_dialog_state_from_body(): going to return rmatch 1 ```