[SR-Users] memory: Free fragment not found

Hi.

My kamailio v4.4.5 installation ( -m 512 -M 64 ) stop sip processing with repeatable error:

Feb 15 21:45:05 kamailio[14173] ERROR: <core> [mem/f_malloc.c:415]:

fm_search_defrag(): fm_search_defrag(0x7f39917fa010, 952); Free fragment not found! Feb 15 21:45:05 kamailio[14173] ERROR: <core> [mem/f_malloc.c:498]: fm_malloc(): fm_malloc(0x7f39917fa010, 952) called from core: rvalue.c: rval_new_empty(224), module: core; Free fragment not foun

while it was enough free shared memory according to

kamcmd> core.shmmem m

{ total: 512 free: 472 used: 27 real_used: 39 max_used: 51m fragments: 37035 }

whether it was about package memory or smth else? Thanks!