gdb commands after attaching to the PID:

 info thread
   thread apply all bt 

(gdb) info thread
  28 Thread 0x7fd9dd3b1710 (LWP 21562)  0x0000003afc6d41ad in read () at ../sysdeps/unix/syscall-template.S:82
  27 Thread 0x7fd9dd335710 (LWP 21563)  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
  26 Thread 0x7fd9dd2b9710 (LWP 21564)  0x0000003afc6d7df3 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>)
    at ../sysdeps/unix/sysv/linux/poll.c:87
  25 Thread 0x7fd9dd23d710 (LWP 21565)  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
  24 Thread 0x7fd9dcfaf710 (LWP 21566)  0x0000003afc6d7df3 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>)
    at ../sysdeps/unix/sysv/linux/poll.c:87
  23 Thread 0x7fd9dcf33710 (LWP 21567)  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
  22 Thread 0x7fd9dceb7710 (LWP 21568)  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
  21 Thread 0x7fd9dce3b710 (LWP 21569)  0x0000003afc6d7df3 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>)
    at ../sysdeps/unix/sysv/linux/poll.c:87
  20 Thread 0x7fd9dcdbf710 (LWP 21570)  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
  19 Thread 0x7fd9dcd43710 (LWP 21571)  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
  18 Thread 0x7fd9dccc7710 (LWP 21572)  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
  17 Thread 0x7fd9dc1fe710 (LWP 21573)  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
  16 Thread 0x7fd9dc182710 (LWP 21574)  0x0000003afc6d7df3 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>)
    at ../sysdeps/unix/sysv/linux/poll.c:87
  15 Thread 0x7fd9dc106710 (LWP 21576)  0x0000003afc6a6a4d in nanosleep () at ../sysdeps/unix/syscall-template.S:82
  14 Thread 0x7fd9dc08a710 (LWP 21578)  0x0000003afc6d7df3 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>)
    at ../sysdeps/unix/sysv/linux/poll.c:87
  13 Thread 0x7fd9944e2710 (LWP 21579)  0x0000003afc6d7df3 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>)
    at ../sysdeps/unix/sysv/linux/poll.c:87
  12 Thread 0x7fd994466710 (LWP 21580)  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
  11 Thread 0x7fd9943ea710 (LWP 21581)  0x0000003afc6a6a4d in nanosleep () at ../sysdeps/unix/syscall-template.S:82
  10 Thread 0x7fd994168710 (LWP 21582)  0x0000003afc6d7df3 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>)
    at ../sysdeps/unix/sysv/linux/poll.c:87
  9 Thread 0x7fd9940ec710 (LWP 21583)  0x0000003afc6a6a4d in nanosleep () at ../sysdeps/unix/syscall-template.S:82
  8 Thread 0x7fd977fff710 (LWP 21584)  0x0000003afc6a6a4d in nanosleep () at ../sysdeps/unix/syscall-template.S:82
  7 Thread 0x7fd977f83710 (LWP 21585)  0x0000003afc6a6a4d in nanosleep () at ../sysdeps/unix/syscall-template.S:82
  6 Thread 0x7fd977f07710 (LWP 21586)  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
  5 Thread 0x7fd977e8b710 (LWP 21587)  0x0000003afc6d7df3 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>)
    at ../sysdeps/unix/sysv/linux/poll.c:87
  4 Thread 0x7fd977d93710 (LWP 21591)  __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:136
  3 Thread 0x7fd977d17710 (LWP 21592)  __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:136
  2 Thread 0x7fd977c9b710 (LWP 21593)  __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:136
* 1 Thread 0x7fd9dd5bf7c0 (LWP 21561)  0x0000003afc6d41ad in read () at ../sysdeps/unix/syscall-template.S:82
(gdb) thread apply all bt

Thread 28 (Thread 0x7fd9dd3b1710 (LWP 21562)):
#0  0x0000003afc6d41ad in read () at ../sysdeps/unix/syscall-template.S:82
#1  0x0000000000521d80 in inotify_daemon (data=<value optimized out>) at stdtime/localtime.c:290
#2  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#3  0x0000003afce07761 in start_thread (arg=0x7fd9dd3b1710) at pthread_create.c:301
#4  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 27 (Thread 0x7fd9dd335710 (LWP 21563)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x0000000000528718 in tps_processing_function (data=0x1e51548) at taskprocessor.c:293
#2  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#3  0x0000003afce07761 in start_thread (arg=0x7fd9dd335710) at pthread_create.c:301
#4  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 26 (Thread 0x7fd9dd2b9710 (LWP 21564)):
#0  0x0000003afc6d7df3 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x0000000000435931 in listener (unused=<value optimized out>) at asterisk.c:1297
#2  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#3  0x0000003afce07761 in start_thread (arg=0x7fd9dd2b9710) at pthread_create.c:301
#4  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 25 (Thread 0x7fd9dd23d710 (LWP 21565)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00000000004ca5cf in logger_thread (data=<value optimized out>) at logger.c:993
#2  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#3  0x0000003afce07761 in start_thread (arg=0x7fd9dd23d710) at pthread_create.c:301
#4  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 24 (Thread 0x7fd9dcfaf710 (LWP 21566)):
#0  0x0000003afc6d7df3 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x0000000000534d37 in ast_wait_for_input (fd=<value optimized out>, ms=<value optimized out>) at utils.c:1060
#2  0x0000000000529ff2 in ast_tcptls_server_root (data=0x7ee380) at tcptls.c:247
#3  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#4  0x0000003afce07761 in start_thread (arg=0x7fd9dcfaf710) at pthread_create.c:301
#5  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 23 (Thread 0x7fd9dcf33710 (LWP 21567)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x000000000048e44d in do_devstate_changes (data=<value optimized out>) at devicestate.c:539
#2  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#3  0x0000003afce07761 in start_thread (arg=0x7fd9dcf33710) at pthread_create.c:301
#4  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115
---Type <return> to continue, or q <return> to quit---

Thread 22 (Thread 0x7fd9dceb7710 (LWP 21568)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x0000000000528718 in tps_processing_function (data=0x23295b8) at taskprocessor.c:293
#2  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#3  0x0000003afce07761 in start_thread (arg=0x7fd9dceb7710) at pthread_create.c:301
#4  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 21 (Thread 0x7fd9dce3b710 (LWP 21569)):
#0  0x0000003afc6d7df3 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00000000004a8cf8 in do_parking_thread (ignore=<value optimized out>) at features.c:3909
#2  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#3  0x0000003afce07761 in start_thread (arg=0x7fd9dce3b710) at pthread_create.c:301
#4  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 20 (Thread 0x7fd9dcdbf710 (LWP 21570)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x000000000048b2e5 in db_sync_thread (data=<value optimized out>) at db.c:749
#2  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#3  0x0000003afce07761 in start_thread (arg=0x7fd9dcdbf710) at pthread_create.c:301
#4  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 19 (Thread 0x7fd9dcd43710 (LWP 21571)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x0000000000528718 in tps_processing_function (data=0x248cef8) at taskprocessor.c:293
#2  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#3  0x0000003afce07761 in start_thread (arg=0x7fd9dcd43710) at pthread_create.c:301
#4  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 18 (Thread 0x7fd9dccc7710 (LWP 21572)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x000000000051ec42 in sched_run (data=0x248db40) at sched.c:106
#2  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#3  0x0000003afce07761 in start_thread (arg=0x7fd9dccc7710) at pthread_create.c:301
#4  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 17 (Thread 0x7fd9dc1fe710 (LWP 21573)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fd9ad350af0 in do_timing (arg=<value optimized out>) at res_timing_pthread.c:465
#2  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#3  0x0000003afce07761 in start_thread (arg=0x7fd9dc1fe710) at pthread_create.c:301
#4  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

---Type <return> to continue, or q <return> to quit---
Thread 16 (Thread 0x7fd9dc182710 (LWP 21574)):
#0  0x0000003afc6d7df3 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87

#1  0x00007fd99fdad7c2 in do_monitor (data=<value optimized out>) at chan_dahdi.c:11235
#2  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#3  0x0000003afce07761 in start_thread (arg=0x7fd9dc182710) at pthread_create.c:301
#4  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 15 (Thread 0x7fd9dc106710 (LWP 21576)):
#0  0x0000003afc6a6a4d in nanosleep () at ../sysdeps/unix/syscall-template.S:82
#1  0x0000003afc6da8c4 in usleep (useconds=<value optimized out>) at ../sysdeps/unix/sysv/linux/usleep.c:33
#2  0x000000000043feea in ast_autoservice_stop (chan=0x7fd95400e768) at autoservice.c:274
#3  0x00000000004f24c4 in pbx_find_extension (chan=0x7fd95400e768, bypass=0x0, q=0x7fd9dc102da0, context=0x7fd95400ecc0 "internal", exten=0x7fd98c029ec0 "900000",
    priority=1, label=0x0, callerid=0x0, action=E_MATCH) at pbx.c:2821
#4  0x00000000004a3230 in ast_parking_ext_valid (exten_str=<value optimized out>, chan=<value optimized out>, context=<value optimized out>) at features.c:481
#5  0x00007fd9ab49cb1a in handle_request_refer (p=0x7fd954006fe8, req=0x7fd9dc105190, debug=<value optimized out>, seqno=2, nounlock=0x7fd9dc105138)
    at chan_sip.c:22131
#6  0x00007fd9ab4d361f in handle_incoming (p=0x7fd954006fe8, req=0x7fd9dc105190, addr=0x7fd9dc105bf0, recount=0x7fd9dc10513c, nounlock=0x7fd9dc105138)
    at chan_sip.c:23666
#7  0x00007fd9ab4d54b6 in handle_request_do (req=0x7fd9dc105190, addr=0x7fd9dc105bf0) at chan_sip.c:23968
#8  0x00007fd9ab4d64f4 in sipsock_read (id=<value optimized out>, fd=<value optimized out>, events=<value optimized out>, ignore=<value optimized out>)
    at chan_sip.c:23866
#9  0x00000000004c293a in ast_io_wait (ioc=0x259df40, howlong=<value optimized out>) at io.c:288
#10 0x00007fd9ab4c4bdf in do_monitor (data=<value optimized out>) at chan_sip.c:24383
#11 0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#12 0x0000003afce07761 in start_thread (arg=0x7fd9dc106710) at pthread_create.c:301
#13 0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 14 (Thread 0x7fd9dc08a710 (LWP 21578)):
#0  0x0000003afc6d7df3 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fd99dcbece9 in do_monitor (data=<value optimized out>) at chan_phone.c:1087
#2  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#3  0x0000003afce07761 in start_thread (arg=0x7fd9dc08a710) at pthread_create.c:301
#4  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 13 (Thread 0x7fd9944e2710 (LWP 21579)):
#0  0x0000003afc6d7df3 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fd9a8e065ca in scan_thread (unused=<value optimized out>) at pbx_spool.c:634
#2  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#3  0x0000003afce07761 in start_thread (arg=0x7fd9944e2710) at pthread_create.c:301
#4  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 12 (Thread 0x7fd994466710 (LWP 21580)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
---Type <return> to continue, or q <return> to quit---
#1  0x0000000000528718 in tps_processing_function (data=0x2664258) at taskprocessor.c:293
#2  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#3  0x0000003afce07761 in start_thread (arg=0x7fd994466710) at pthread_create.c:301
#4  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 11 (Thread 0x7fd9943ea710 (LWP 21581)):
#0  0x0000003afc6a6a4d in nanosleep () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007fd9acb3772a in lock_broker (unused=<value optimized out>) at func_lock.c:192
#2  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#3  0x0000003afce07761 in start_thread (arg=0x7fd9943ea710) at pthread_create.c:301
#4  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 10 (Thread 0x7fd994168710 (LWP 21582)):
#0  0x0000003afc6d7df3 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00000000004c28de in ast_io_wait (ioc=0x26ef280, howlong=<value optimized out>) at io.c:275
#2  0x00007fd9aefa6968 in network_thread (ignore=<value optimized out>) at pbx_dundi.c:2178
#3  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#4  0x0000003afce07761 in start_thread (arg=0x7fd994168710) at pthread_create.c:301
#5  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 9 (Thread 0x7fd9940ec710 (LWP 21583)):
#0  0x0000003afc6a6a4d in nanosleep () at ../sysdeps/unix/syscall-template.S:82
#1  0x0000003afc6a68c0 in __sleep (seconds=0) at ../sysdeps/unix/sysv/linux/sleep.c:138
#2  0x00007fd9aefb1026 in process_precache (ign=<value optimized out>) at pbx_dundi.c:2255
#3  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#4  0x0000003afce07761 in start_thread (arg=0x7fd9940ec710) at pthread_create.c:301
#5  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 8 (Thread 0x7fd977fff710 (LWP 21584)):
#0  0x0000003afc6a6a4d in nanosleep () at ../sysdeps/unix/syscall-template.S:82
#1  0x0000003afc6a68c0 in __sleep (seconds=0) at ../sysdeps/unix/sysv/linux/sleep.c:138
#2  0x00007fd9aefa573b in process_clearcache (ignore=<value optimized out>) at pbx_dundi.c:2218
#3  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#4  0x0000003afce07761 in start_thread (arg=0x7fd977fff710) at pthread_create.c:301
#5  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 7 (Thread 0x7fd977f83710 (LWP 21585)):
#0  0x0000003afc6a6a4d in nanosleep () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007fd9a620a82b in cleanup (unused=<value optimized out>) at pbx_realtime.c:130
#2  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#3  0x0000003afce07761 in start_thread (arg=0x7fd977f83710) at pthread_create.c:301
#4  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

---Type <return> to continue, or q <return> to quit---
Thread 6 (Thread 0x7fd977f07710 (LWP 21586)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x0000000000528718 in tps_processing_function (data=0x271bd58) at taskprocessor.c:293
#2  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#3  0x0000003afce07761 in start_thread (arg=0x7fd977f07710) at pthread_create.c:301
#4  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 5 (Thread 0x7fd977e8b710 (LWP 21587)):
#0  0x0000003afc6d7df3 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x0000000000434d00 in monitor_sig_flags (unused=<value optimized out>) at asterisk.c:3074
#2  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#3  0x0000003afce07761 in start_thread (arg=0x7fd977e8b710) at pthread_create.c:301
#4  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 4 (Thread 0x7fd977d93710 (LWP 21591)):
#0  __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:136
#1  0x0000003afce092e0 in _L_lock_906 () from /lib64/libpthread.so.0
#2  0x0000003afce091c7 in __pthread_mutex_lock (mutex=0x7fd95400e720) at pthread_mutex_lock.c:82
#3  0x0000000000471b7a in __ast_read (chan=0x7fd95400e768, dropaudio=0) at channel.c:3614
#4  0x0000000000502b8c in local_bridge_loop (c0=0x7fd98c02b748, c1=0x7fd95400e768, flags=2010677888, fo=0x7fd977d88280, rc=0x7fd977d88278, timeoutms=0)
    at rtp_engine.c:881
#5  ast_rtp_instance_bridge (c0=0x7fd98c02b748, c1=0x7fd95400e768, flags=2010677888, fo=0x7fd977d88280, rc=0x7fd977d88278, timeoutms=0) at rtp_engine.c:1332
#6  0x0000000000475141 in ast_channel_bridge (c0=0x7fd98c02b748, c1=0x7fd95400e768, config=0x7fd977d88d10, fo=0x7fd977d88280, rc=0x7fd977d88278) at channel.c:7143
#7  0x00000000004a42ee in ast_bridge_call (chan=0x7fd98c02b748, peer=0x7fd95400e768, config=0x7fd977d88d10) at features.c:3255
#8  0x00007fd9acd44b59 in dial_exec_full (chan=0x7fd98c02b748, data=<value optimized out>, peerflags=0x7fd977d88fe0, continue_exec=0x0) at app_dial.c:2632
#9  0x00007fd9acd46306 in dial_exec (chan=<value optimized out>, data=<value optimized out>) at app_dial.c:2732
#10 0x00000000004e9b2b in pbx_exec (c=0x7fd98c02b748, app=0x27064c0, data=0x7fd977d8b100 "SIP/900006,60,tT") at pbx.c:1407
#11 0x00000000004f73aa in pbx_extension_helper (c=0x7fd98c02b748, con=0x0, context=0x7fd98c02bca0 "macro-managed-tones", exten=0x7fd98c02bcf0 "s", priority=1,
    label=0x7fd98c02bca0 "macro-managed-tones", callerid=0x7fd98c010550 "900005", action=E_SPAWN, found=0x7fd977d8e07c, combined_find_spawn=1) at pbx.c:4086
#12 0x00000000004f7890 in ast_spawn_extension (c=<value optimized out>, context=<value optimized out>, exten=<value optimized out>, priority=<value optimized out>,
    callerid=<value optimized out>, found=<value optimized out>, combined_find_spawn=1) at pbx.c:4605
#13 0x00007fd99a635793 in _macro_exec (chan=0x7fd977d8e07c, data=<value optimized out>, exclusive=0) at app_macro.c:408
#14 0x00000000004e9b2b in pbx_exec (c=0x7fd98c02b748, app=0x2601d00, data=0x7fd977d8e220 "managed-tones,900006") at pbx.c:1407
#15 0x00007fd9a620b2ba in realtime_exec (chan=0x7fd98c02b748, context=<value optimized out>, exten=0x7fd98c02bcf0 "s", priority=<value optimized out>,
    callerid=<value optimized out>, data=<value optimized out>) at pbx_realtime.c:366
#16 0x00000000004f75d2 in pbx_extension_helper (c=0x7fd98c02b748, con=0x0, context=<value optimized out>, exten=0x7fd98c02bcf0 "s", priority=1, label=0x0,
    callerid=0x7fd98c010550 "900005", action=E_SPAWN, found=0x7fd977d92d0c, combined_find_spawn=1) at pbx.c:4099
#17 0x00000000004fc205 in ast_spawn_extension (c=0x7fd98c02b748, args=0x0) at pbx.c:4605
#18 __ast_pbx_run (c=0x7fd98c02b748, args=0x0) at pbx.c:4703
#19 0x00000000004fd829 in pbx_thread (data=<value optimized out>) at pbx.c:5014
#20 0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#21 0x0000003afce07761 in start_thread (arg=0x7fd977d93710) at pthread_create.c:301
#22 0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115
---Type <return> to continue, or q <return> to quit---

Thread 3 (Thread 0x7fd977d17710 (LWP 21592)):
#0  __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:136
#1  0x0000003afce092e0 in _L_lock_906 () from /lib64/libpthread.so.0
#2  0x0000003afce091c7 in __pthread_mutex_lock (mutex=0x7fd95400e720) at pthread_mutex_lock.c:82
#3  0x000000000046ef9e in ast_waitfor_nandfds (c=0x7fd977d13dc0, n=1, fds=0x0, nfds=0, exception=0x0, outfd=0x0, ms=0x7fd977d16d1c) at channel.c:3027
#4  0x000000000046f9f7 in ast_waitfor_n (c=<value optimized out>, n=<value optimized out>, ms=<value optimized out>) at channel.c:3340
#5  0x000000000044043e in autoservice_run (ign=<value optimized out>) at autoservice.c:122
#6  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#7  0x0000003afce07761 in start_thread (arg=0x7fd977d17710) at pthread_create.c:301
#8  0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 2 (Thread 0x7fd977c9b710 (LWP 21593)):
#0  __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:136
#1  0x0000003afce092e0 in _L_lock_906 () from /lib64/libpthread.so.0
#2  0x0000003afce091c7 in __pthread_mutex_lock (mutex=0x7fd95400e720) at pthread_mutex_lock.c:82
#3  0x00000000004d37ad in action_status (s=0x7fd977c99fa0, m=<value optimized out>) at manager.c:3132
#4  0x00000000004dbc1b in process_message (s=0x7fd977c99fa0, m=0x7fd977c99730) at manager.c:4479
#5  0x00000000004de820 in do_message (s=0x7fd977c99fa0) at manager.c:4600
#6  0x00000000004debe0 in session_do (data=0x7fd9cc0014c8) at manager.c:4675
#7  0x0000000000529afd in handle_tcptls_connection (data=0x7fd9cc0014c8) at tcptls.c:229
#8  0x0000000000534d9a in dummy_start (data=<value optimized out>) at utils.c:971
#9  0x0000003afce07761 in start_thread (arg=0x7fd977c9b710) at pthread_create.c:301
#10 0x0000003afc6e14fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 1 (Thread 0x7fd9dd5bf7c0 (LWP 21561)):
#0  0x0000003afc6d41ad in read () at ../sysdeps/unix/syscall-template.S:82
#1  0x0000000000545469 in read_char (el=0x1e3ea10, cp=0x7fff1accf2df "]\021") at read.c:298
#2  0x00000000005404c8 in el_getc (el=0x1e3ea10, cp=0x7fff1accf2df "]\021") at read.c:350
#3  0x0000000000540708 in read_getcmd (el=0x1e3ea10, nread=0x7fff1acd068c) at read.c:243
#4  el_gets (el=0x1e3ea10, nread=0x7fff1acd068c) at read.c:446
#5  0x0000000000437fcf in main (argc=<value optimized out>, argv=<value optimized out>) at asterisk.c:3849
(gdb)
(gdb)