While building the sip uri in tel2sip() we have: sip_uri.s = pkg_malloc(sip_uri.len) But later in pv_set_ruri(): val->rs.s[val->rs.len] = '\0'; It's overwriting the q_malloc control structures (a classic type of bug already). Kamailio will log a line like this before crashing: Mar 3 13:31:15 XXXXXXXX /opt/ims/sbin/kamailio[15030]: : <core> [mem/q_malloc.c:140]: qm_debug_frag(): BUG: qm_*: prev. fragm. tail overwritten(c0c0c000, abcdefed)[0x7feaf22bd558:0x7feaf22bd588]! I get this crash with long "tel:" ruris, the ones that have a ";phone-context=" param . This patch fixes it. You can view, comment on, or merge this pull request online at: https://github.com/kamailio/kamailio/pull/534 -- Commit Summary -- * siputils: tel2sip(): fix 'off by one' when allocating memory -- File Changes -- M modules/siputils/checks.c (2) -- Patch Links -- https://github.com/kamailio/kamailio/pull/534.patch https://github.com/kamailio/kamailio/pull/534.diff --- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/pull/534