segfault on load_mysql_servers_to_runtime()

[renecannao]

(gdb) bt
#0  0x0000000000457367 in je_arena_mapbitsp_read (ptr=0x7ffff29cda40) at include/jemalloc/internal/arena.h:525
#1  je_arena_mapbits_get (ptr=0x7ffff29cda40) at include/jemalloc/internal/arena.h:532
#2  je_arena_mapbits_binind_get (ptr=0x7ffff29cda40) at include/jemalloc/internal/arena.h:573
#3  je_arena_salloc (ptr=0x7ffff29cda40) at include/jemalloc/internal/arena.h:991
#4  je_isalloc (ptr=0x7ffff29cda40) at include/jemalloc/internal/jemalloc_internal.h:849
#5  ifree (ptr=0x7ffff29cda40) at src/jemalloc.c:1228
#6  free (ptr=0x7ffff29cda40) at src/jemalloc.c:1308
#7  0x00007ffff28f4705 in Standard_ProxySQL_Admin::load_mysql_servers_to_runtime (this=0x7ffff48ce140) at Standard_ProxySQL_Admin.cpp:1226
#8  0x00007ffff28f19f4 in admin_handler_command_load_or_save (query_no_space=0x7fffee0bfea0 "load mysql servers to run", query_no_space_length=25, sess=0x7fffee07ff00, pa=0x7ffff48ce140, q=0x7fffee7febc8,
    ql=0x7fffee7febc4) at Standard_ProxySQL_Admin.cpp:422
#9  0x00007ffff28f1ce8 in admin_session_handler (sess=0x7fffee07ff00, pa=0x7ffff48ce140, pkt=0x7fffee7fecc0) at Standard_ProxySQL_Admin.cpp:485
#10 0x00007ffff2999fea in MySQL_Session::handler (this=0x7fffee07ff00) at mysql_session.cpp:400
#11 0x00007ffff28f20ea in child_mysql (arg=0x7fffee80f058) at Standard_ProxySQL_Admin.cpp:594
#12 0x00007ffff7bc79d1 in start_thread () from /lib64/libpthread.so.0
#13 0x00007ffff64feb6d in clone () from /lib64/libc.so.6