=======================================================================
=== 13.5.0-2
=== Currently Held Locks
=======================================================================
===
=== <pending> <lock#> (<file>): <lock type> <line num> <function> <lock name> <lock addr> (times locked)
===
=== Thread ID: 0x7fdd643c0700 LWP:22525 (do_monitor           started at [28915] chan_sip.c restart_monitor())
=== ---> Lock #0 (chan_sip.c): MUTEX 28886 do_monitor &monlock 0x7fdd777af4a0 (1)
	/usr/sbin/asterisk(__ast_bt_get_addresses+0x1d) [0x46e14d]
	/usr/sbin/asterisk(__ast_pthread_mutex_lock+0xc9) [0x541a6e]
	/usr/lib/asterisk/modules/chan_sip.so(+0x9837a) [0x7fdd7755b37a]
	/usr/sbin/asterisk() [0x60bef2]
	/lib/x86_64-linux-gnu/libpthread.so.0(+0x6b50) [0x7fdd8b5cfb50]
	/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d) [0x7fdd8a95195d]
=== -------------------------------------------------------------------
===
=== Thread ID: 0x7fdd8219c700 LWP:1742 (netconsole           started at [ 1635] asterisk.c listener())
=== ---> Waiting for Lock #0 (chan_sip.c): MUTEX 28904 restart_monitor &monlock 0x7fdd777af4a0 (1)
	/usr/sbin/asterisk(__ast_bt_get_addresses+0x1d) [0x46e14d]
	/usr/sbin/asterisk(__ast_pthread_mutex_lock+0xc9) [0x541a6e]
	/usr/lib/asterisk/modules/chan_sip.so(+0x98476) [0x7fdd7755b476]
	/usr/lib/asterisk/modules/chan_sip.so(+0xb4226) [0x7fdd77577226]
	/usr/sbin/asterisk(ast_cli_command_full+0x264) [0x4df2c9]
	/usr/sbin/asterisk(ast_cli_command_multiple_full+0xc0) [0x4df46a]
	/usr/sbin/asterisk() [0x459156]
	/usr/sbin/asterisk() [0x60bef2]
	/lib/x86_64-linux-gnu/libpthread.so.0(+0x6b50) [0x7fdd8b5cfb50]
	/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d) [0x7fdd8a95195d]
=== --- ---> Locked Here: chan_sip.c line 28886 (do_monitor)
=== -------------------------------------------------------------------
===
=======================================================================

Unable to disable core size resource limit: Operation not permitted
Asterisk ending (0).