12 Nov
2021
12 Nov
'21
6:34 a.m.
Those patches were suppose to protect against a memcpy
from a null pointer, which can be problematic on some systems:
* [lost PV functions: runtime error: null pointer passed as argument 2, which is declared
to never be null #2913](https://github.com/kamailio/kamailio/issues/2913)
Is this happening only when assigning `$aa`, or happens for any assignment done to
`$var(...)`?
Tested with pv $ai and $dd and result is the same:
**scscf kamailio.cfg code:**
713 xlog("ai [$ai]\n");
714 $var(var_ai) = $ai;
715 xlog("var_ai [$var(var_ai)] len=$(var(var_ia){s.len})\n");
716
717 xlog("dd [$dd]\n");
718 $var(var_dd) = $dd;
719 xlog("var_dd [$var(var_dd)] len=$(var(var_dd){s.len})\n");
**Log output:**
19572 Nov 12 13:30:43 ims_dev-107 kamailio_scscf[4439]: 1(4472) ERROR: ***
cfgtrace:dbg_cfg_trace(): request_route=[REGISTER] c=[/etc/kamailio_scscf/kamailio.cfg]
l=713 a=25 n=xlog 19573 Nov 12 13:30:43 ims_dev-107
kamailio_scscf[4439]: 1(4472) DEBUG: pv [pv_core.c:1327]: pv_get_pai(): no
P-Asserted-Identity header
19574 Nov 12 13:30:43 ims_dev-107 kamailio_scscf[4439]: 1(4472) ERROR: <script>:
**ai [<null>]**
19575 Nov 12 13:30:43 ims_dev-107
kamailio_scscf[4439]: 1(4472) ERROR: *** cfgtrace:dbg_cfg_trace():
request_route=[REGISTER] c=[/etc/kamailio_scscf/kamailio.cfg] l=714 a=63 n=assign
19576 Nov 12 13:30:43 ims_dev-107 kamailio_scscf[4439]: 1(4472) DEBUG: pv
[pv_core.c:1327]: pv_get_pai(): no P-Asserted-Identity header
19577 Nov 12 13:30:43 ims_dev-107
kamailio_scscf[4439]: 1(4472) ERROR: *** cfgtrace:dbg_cfg_trace():
request_route=[REGISTER] c=[/etc/kamailio_scscf/kamailio.cfg] l=715 a=25 n=xlog
19578 Nov 12 13:30:43 ims_dev-107 kamailio_scscf[4439]: 1(4472) ERROR:
<script>: **var_ai [0] len=1**
19579 Nov 12 13:30:43 ims_dev-107 kamailio_scscf[4439]: 1(4472) ERROR: ***
cfgtrace:dbg_cfg_trace(): request_route=[REGISTER] c=[/etc/kamailio_scscf/kamailio.cfg]
l=717 a=25 n=xlog
19580 Nov 12 13:30:43 ims_dev-107 kamailio_scscf[4439]: 1(4472) DEBUG: pv
[pv_core.c:1443]: pv_get_dsturi_attr(): no destination URI
19581 Nov 12 13:30:43 ims_dev-107 kamailio_scscf[4439]: 1(4472) ERROR: <script>:
**dd [<null>]**
19582 Nov 12 13:30:43 ims_dev-107 kamailio_scscf[4439]: 1(4472) ERROR: ***
cfgtrace:dbg_cfg_trace(): request_route=[REGISTER] c=[/etc/kamailio_scscf/kamailio.cfg]
l=718 a=63 n=assign
19583 Nov 12 13:30:43 ims_dev-107 kamailio_scscf[4439]: 1(4472) DEBUG: pv
[pv_core.c:1443]: pv_get_dsturi_attr(): no destination URI
19584 Nov 12 13:30:43 ims_dev-107 kamailio_scscf[4439]: 1(4472) ERROR: ***
cfgtrace:dbg_cfg_trace(): request_route=[REGISTER] c=[/etc/kamailio_scscf/kamailio.cfg]
l=719 a=25 n=xlog
19585 Nov 12 13:30:43 ims_dev-107 kamailio_scscf[4439]: 1(4472) ERROR: <script>:
**var_dd [0] len=1**
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