(gdb) thread apply all backtrace

Thread 2 (Thread 1094719824 (LWP 2705)):
#0  0x00002aaaac5d7295 in ppoll (fds=0x6307a0, nfds=1, timeout=0x0, sigmask=0x6305e8) at ../sysdeps/unix/sysv/linux/ppoll.c:57
#1  0x00002aaaaad080c4 in pa_rtpoll_run (p=0x6305a0, wait=true) at pulsecore/rtpoll.c:377
#2  0x00002aaab13f0573 in thread_func (userdata=0x62fb40) at modules/module-alsa-source.c:616
#3  0x00002aaaaad098bd in internal_thread_func (userdata=0x631660) at pulsecore/thread-posix.c:73
#4  0x00002aaaaaf2c447 in start_thread (arg=<value optimized out>) at pthread_create.c:297
#5  0x00002aaaac5dfe5d in clone () from /lib64/libc.so.6

Thread 1 (Thread 46912527280464 (LWP 2702)):
#0  0x00002aaaac5d70a6 in *__GI___poll (fds=0x614260, nfds=10, timeout=1999) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00002aaaaacda3bc in pa_mainloop_poll (m=0x60d270) at pulse/mainloop.c:855
#2  0x00002aaaaacdb1c8 in pa_mainloop_iterate (m=0x60d270, block=<value optimized out>, retval=0x7fff3588b02c) at pulse/mainloop.c:919
#3  0x00002aaaaacdb260 in pa_mainloop_run (m=0x60d270, retval=0x7fff3588b02c) at pulse/mainloop.c:937
#4  0x0000000000406bdb in main (argc=<value optimized out>, argv=<value optimized out>) at daemon/main.c:698
0x00002aaaac5d70a6      87        int result = INLINE_SYSCALL (poll, 3, CHECK_N (fds, nfds), nfds, timeout);
(gdb) bt full
#0  0x00002aaaac5d70a6 in *__GI___poll (fds=0x614260, nfds=10, timeout=1999) at ../sysdeps/unix/sysv/linux/poll.c:87
        oldtype = 0
        result = <value optimized out>
#1  0x00002aaaaacda3bc in pa_mainloop_poll (m=0x60d270) at pulse/mainloop.c:855
        __PRETTY_FUNCTION__ = "pa_mainloop_poll"
        __func__ = "pa_mainloop_poll"
#2  0x00002aaaaacdb1c8 in pa_mainloop_iterate (m=0x60d270, block=<value optimized out>, retval=0x7fff3588b02c) at pulse/mainloop.c:919
        r = 0
        __PRETTY_FUNCTION__ = "pa_mainloop_iterate"
#3  0x00002aaaaacdb260 in pa_mainloop_run (m=0x60d270, retval=0x7fff3588b02c) at pulse/mainloop.c:937
        r = <value optimized out>
#4  0x0000000000406bdb in main (argc=<value optimized out>, argv=<value optimized out>) at daemon/main.c:698
        child = <value optimized out>
        tty_fd = <value optimized out>
        c = (pa_core *) 0x60f370
        buf = (pa_strbuf *) 0x60d200
        conf = (pa_daemon_conf *) 0x60d050
        mainloop = (pa_mainloop *) 0x60d270
        s = 0x60d3d0 "�\202b"
        r = 0
        retval = 0
        d = 2
        daemon_pipe = {-1, -1}
        suid_root = <value optimized out>
        real_root = <value optimized out>
        valid_pid_file = 1
        gid = 4294967295
        __PRETTY_FUNCTION__ = "main"
        __func__ = "main"