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### Description

Kamailio is segfaulting after activating pubruri_caller_dlg_var and pubruri_callee_dlg_var from pua_dialoginfo.

modparam("pua_dialoginfo", "use_pubruri_avps", 1) //modparam("pua_dialoginfo", "pubruri_caller_avp", "$avp(s:pubruris_caller)") //modparam("pua_dialoginfo", "pubruri_callee_avp", "$avp(s:pubruris_callee)") modparam("pua_dialoginfo", "pubruri_caller_dlg_var", "pubruri_caller") modparam("pua_dialoginfo", "pubruri_callee_dlg_var", "pubruri_callee")

When i comment the corresponding lines and switch back to the regular avps Kamailio runs without problems.

### Troubleshooting

#### Reproduction

In my setup it seems to be sufficient to just set the module parameters to provoke the segfault. I dont have to wait for any SIP-Traffic or accessing the dlg_vars. Kamailio segfaults while starting.

#### Debugging Data

<!-- If you got a core dump, use gdb to extract troubleshooting data - full backtrace, local variables and the list of the code at the issue location.

gdb /path/to/kamailio /path/to/corefile bt full info locals list

If you are familiar with gdb, feel free to attach more of what you consider to be relevant. -->

``` [root@kamroute ~]# gdb /usr/sbin/kamailio /core.6547 GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-100.el7 Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-redhat-linux-gnu". For bug reporting instructions, please see: http://www.gnu.org/software/gdb/bugs/... Reading symbols from /usr/sbin/kamailio...Reading symbols from /usr/lib/debug/usr/sbin/kamailio.debug...done. done. [New LWP 6547] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Core was generated by `/usr/sbin/kamailio -P /var/run/kamailio/kamailio.pid -f /etc/kamailio/kamailio_'. Program terminated with signal 11, Segmentation fault. #0 __strlen_sse2 () at ../sysdeps/x86_64/strlen.S:31 31 movdqu (%rdi), %xmm1 (gdb) bt full #0 __strlen_sse2 () at ../sysdeps/x86_64/strlen.S:31 No locals. #1 0x00007fc7c61786c4 in mod_init () at pua_dialoginfo.c:692 bind_pua = 0x7fc7c6396b88 <bind_pua> s = {s = 0x0, len = -969002120} avp_spec = {type = 397561584, getf = 0x7fc7ce3b8827 <__fprintf+135>, setf = 0x3, pvp = {pvn = {type = 48, nfree = 0x7ffd17b24e80, u = {isname = {type = 397561264, name = {n = 7976200, s = {s = 0x79b508 "DEBUG", len = 397562576}, re = 0x79b508}}, dname = 0x7ffd17b24db0}}, pvi = {type = 0, u = {ival = 6547, dval = 0x1993}}}, trans = 0x79b508} __FUNCTION__ = "mod_init" #2 0x00000000005661e2 in init_mod (m=0x7fc7cdbd3ac0) at core/sr_module.c:966 __FUNCTION__ = "init_mod" #3 0x0000000000565f1e in init_mod (m=0x7fc7cdbd3e50) at core/sr_module.c:963 __FUNCTION__ = "init_mod" #4 0x0000000000566519 in init_modules () at core/sr_module.c:995 t = 0x20000003e4 i = 994 __FUNCTION__ = "init_modules" #5 0x00000000004293e1 in main (argc=13, argv=0x7ffd17b252d8) at main.c:2584 cfg_stream = 0x254c010 c = -1 r = 397562176 tmp = 0x7ffd17b256e0 "" tmp_len = 0 port = 0 proto = 0 options = 0x737a20 ":f:cm:M:dVIhEeb:l:L:n:vKrRDTN:W:w:t:u:g:P:G:SQ:O:a:A:x:X:Y:" ret = -1 seed = 286186509 rfd = 4 debug_save = 0 debug_flag = 0 dont_fork_cnt = 0 n_lst = 0x0 p = 0x0 st = {st_dev = 18, st_ino = 37027, st_nlink = 2, st_mode = 16832, st_uid = 996, st_gid = 2, __pad0 = 0, st_rdev = 0, st_size = 60, st_blksize = 4096, st_blocks = 0, st_atim = {tv_sec = 1507876455, tv_nsec = 469604021}, st_mtim = {tv_sec = 1507878072, tv_nsec = 553083864}, st_ctim = {tv_sec = 1507878072, tv_nsec = 553083864}, __unused = {0, 0, 0}} __FUNCTION__ = "main" (gdb) info locals cfg_stream = 0x254c010 c = -1 r = 397562176 tmp = 0x7ffd17b256e0 "" tmp_len = 0 port = 0 proto = 0 options = 0x737a20 ":f:cm:M:dVIhEeb:l:L:n:vKrRDTN:W:w:t:u:g:P:G:SQ:O:a:A:x:X:Y:" ret = -1 seed = 286186509 rfd = 4 debug_save = 0 debug_flag = 0 dont_fork_cnt = 0 n_lst = 0x0 p = 0x0 st = {st_dev = 18, st_ino = 37027, st_nlink = 2, st_mode = 16832, st_uid = 996, st_gid = 2, __pad0 = 0, st_rdev = 0, st_size = 60, st_blksize = 4096, st_blocks = 0, st_atim = {tv_sec = 1507876455, tv_nsec = 469604021}, st_mtim = { tv_sec = 1507878072, tv_nsec = 553083864}, st_ctim = {tv_sec = 1507878072, tv_nsec = 553083864}, __unused = {0, 0, 0}} __FUNCTION__ = "main" (gdb) list 26 mov %edi, %ecx 27 and $0x3f, %ecx 28 pxor %xmm0, %xmm0 29 cmp $0x30, %ecx 30 ja L(next) 31 movdqu (%rdi), %xmm1 32 pcmpeqb %xmm1, %xmm0 33 pmovmskb %xmm0, %edx 34 test %edx, %edx 35 jnz L(exit_less16) (gdb) ```

#### Log Messages

<!-- Check the syslog file and if there are relevant log messages printed by Kamailio, add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site). --> Nothing which seems to be interesting. Kamailios last words are: ``` 0(7450) DEBUG: <core> [core/sr_module.c:965]: init_mod(): pua_dialoginfo 0(7450) DEBUG: <core> [core/sr_module.c:694]: find_mod_export_record(): find_export_record: found <bind_pua> in module pua [/usr/lib64/kamailio/modules/pua.so] 0(7450) DEBUG: <core> [core/sr_module.c:694]: find_mod_export_record(): find_export_record: found <load_dlg> in module dialog [/usr/lib64/kamailio/modules/dialog.so] 0(7448) ERROR: <core> [core/daemonize.c:303]: daemonize(): Main process exited before writing to pipe ```

#### SIP Traffic

<!-- If the issue is exposed by processing specific SIP messages, grab them with ngrep or save in a pcap file, then add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site). -->

``` no SIP Traffic needed ```

### Possible Solutions

<!-- If you found a solution or workaround for the issue, describe it. Ideally, provide a pull request with a fix. -->

### Additional Information

* **Kamailio Version** - output of `kamailio -v`

``` [root@kamroute ~]# kamailio -v version: kamailio 5.0.3 (x86_64/linux) 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 ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB poll method support: poll, epoll_lt, epoll_et, sigio_rt, select. id: unknown compiled on 12:31:32 Sep 20 2017 with gcc 4.8.2

[root@kamroute ~]# rpm -qa|grep kamail kamailio-presence-5.0.3-10.el7.x86_64 kamailio-outbound-5.0.3-10.el7.x86_64 kamailio-debuginfo-5.0.3-10.el7.x86_64 kamailio-5.0.3-10.el7.x86_64 kamailio-ims-5.0.3-10.el7.x86_64 kamailio-xmpp-5.0.3-10.el7.x86_64 kamailio-mysql-5.0.3-10.el7.x86_64 [root@kamroute ~]# ```

* **Operating System**:

<!-- Details about the operating system, the type: Linux (e.g.,: Debian 8.4, Ubuntu 16.04, CentOS 7.1, ...), MacOS, xBSD, Solaris, ...; Kernel details (output of `uname -a`) --> Up2date RHEL7. ``` [root@kamroute ~]# cat /etc/redhat-release Red Hat Enterprise Linux Server release 7.4 (Maipo) [root@kamroute ~]# uname -a Linux kamroute.intranet.mydomain.de 3.10.0-514.26.1.el7.x86_64 #1 SMP Tue Jun 20 01:16:02 EDT 2017 x86_64 x86_64 x86_64 GNU/Linux [root@kamroute ~]# ``` If you need any further information just let me know!