=======================================================================
=== Currently Held Locks ==============================================
=======================================================================
===
=== <pending> <lock#> (<file>): <lock type> <line num> <function> <lock name> <lock addr> (times locked)
===
=== Thread ID: -1229243504 (do_monitor           started at [24468] chan_sip.c restart_monitor())
=== ---> Lock #0 (chan_sip.c): MUTEX 23962 handle_request_do &netlock 0x8502cc0 (1)
        /usr/sbin/asterisk(ast_bt_get_addresses+0x19) [0x8120520]
        /usr/sbin/asterisk(__ast_pthread_mutex_lock+0x92) [0x8119d61]
        /usr/lib/asterisk/modules/chan_sip.so [0x84bee15]
        /usr/lib/asterisk/modules/chan_sip.so [0x84bebe4]
        /usr/sbin/asterisk(ast_io_wait+0x14d) [0x81143fd]
        /usr/lib/asterisk/modules/chan_sip.so [0x84c0b1d]
        /usr/sbin/asterisk [0x8198931]
        /lib/libpthread.so.0 [0x84351f]
        /lib/libc.so.6(clone+0x5e) [0x77904e]
=== ---> Lock #1 (chan_sip.c): MUTEX 7472 find_call sip_pvt_ptr 0xd19ff88 (1)
        /usr/sbin/asterisk(ast_bt_get_addresses+0x19) [0x8120520]
        /usr/sbin/asterisk(__ast_pthread_mutex_lock+0x92) [0x8119d61]
        /usr/sbin/asterisk(__ao2_lock+0x4a) [0x80840cf]
        /usr/lib/asterisk/modules/chan_sip.so [0x846c080]
        /usr/lib/asterisk/modules/chan_sip.so [0x84bee31]
        /usr/lib/asterisk/modules/chan_sip.so [0x84bebe4]
        /usr/sbin/asterisk(ast_io_wait+0x14d) [0x81143fd]
        /usr/lib/asterisk/modules/chan_sip.so [0x84c0b1d]
        /usr/sbin/asterisk [0x8198931]
        /lib/libpthread.so.0 [0x84351f]
        /lib/libc.so.6(clone+0x5e) [0x77904e]
=== ---> Lock #2 (chan_sip.c): MUTEX 23976 handle_request_do p->owner 0xd1a7340 (1)
        /usr/sbin/asterisk(ast_bt_get_addresses+0x19) [0x8120520]
        /usr/sbin/asterisk(__ast_pthread_mutex_trylock+0x92) [0x811a0b0]
        /usr/sbin/asterisk(__ao2_trylock+0x4a) [0x8084221]
        /usr/lib/asterisk/modules/chan_sip.so [0x84bef60]
        /usr/lib/asterisk/modules/chan_sip.so [0x84bebe4]
        /usr/sbin/asterisk(ast_io_wait+0x14d) [0x81143fd]
        /usr/lib/asterisk/modules/chan_sip.so [0x84c0b1d]
        /usr/sbin/asterisk [0x8198931]
        /lib/libpthread.so.0 [0x84351f]
        /lib/libc.so.6(clone+0x5e) [0x77904e]
=== -------------------------------------------------------------------
===
=== Thread ID: -1234113648 (pbx_thread           started at [ 5035] pbx.c ast_pbx_start())
=== ---> Waiting for Lock #0 (channel.c): MUTEX 3636 __ast_read chan 0xd1a7340 (1)
        /usr/sbin/asterisk(ast_bt_get_addresses+0x19) [0x8120520]
        /usr/sbin/asterisk(__ast_pthread_mutex_lock+0x92) [0x8119d61]
        /usr/sbin/asterisk(__ao2_lock+0x4a) [0x80840cf]
        /usr/sbin/asterisk [0x80afb4b]
        /usr/sbin/asterisk(ast_read+0x19) [0x80b1db2]
        /usr/sbin/asterisk [0x80bb32c]
        /usr/sbin/asterisk(ast_channel_bridge+0x131c) [0x80bd3a0]
        /usr/sbin/asterisk(ast_bridge_call+0xd11) [0x80f5e8d]
        /usr/lib/asterisk/modules/app_dial.so [0xbe992d]
        /usr/lib/asterisk/modules/app_dial.so [0xbea36f]
        /usr/sbin/asterisk(pbx_exec+0x1ea) [0x813860f]
        /usr/lib/asterisk/modules/pbx_realtime.so [0x91a1f6]
        /usr/sbin/asterisk [0x8141bad]
        /usr/sbin/asterisk(ast_spawn_extension+0x53) [0x8143570]
        /usr/sbin/asterisk [0x8143f43]
        /usr/sbin/asterisk [0x8145a0b]
        /usr/sbin/asterisk [0x8198931]
        /lib/libpthread.so.0 [0x84351f]
        /lib/libc.so.6(clone+0x5e) [0x77904e]
=== --- ---> Locked Here: chan_sip.c line 23976 (handle_request_do)
=== -------------------------------------------------------------------
===
=== Thread ID: -1234359408 (autoservice_run      started at [  215] autoservice.c ast_autoservice_start())
=== ---> Waiting for Lock #0 (channel.c): MUTEX 3049 ast_waitfor_nandfds c[x] 0xd1a7340 (1)
        /usr/sbin/asterisk(ast_bt_get_addresses+0x19) [0x8120520]
        /usr/sbin/asterisk(__ast_pthread_mutex_lock+0x92) [0x8119d61]
        /usr/sbin/asterisk(__ao2_lock+0x4a) [0x80840cf]
        /usr/sbin/asterisk(ast_waitfor_nandfds+0x1a5) [0x80ae76a]
        /usr/sbin/asterisk(ast_waitfor_n+0x3f) [0x80aef79]
        /usr/sbin/asterisk [0x8089a63]
        /usr/sbin/asterisk [0x8198931]
        /lib/libpthread.so.0 [0x84351f]
        /lib/libc.so.6(clone+0x5e) [0x77904e]
=== --- ---> Locked Here: chan_sip.c line 23976 (handle_request_do)
=== -------------------------------------------------------------------
===
=======================================================================