(gdb) thread apply all backtrace

Thread 20 (Thread 0x7fffdf591700 (LWP 5146)):
#0  0x00007ffff7482ead in nanosleep () from /lib/libc.so.6
#1  0x00007ffff74aa054 in usleep () from /lib/libc.so.6
#2  0x00007ffff609de31 in palsa_thread (context=0x0) at alsa.c:673
#3  0x00007ffff7743d40 in start_thread () from /lib/libpthread.so.0
#4  0x00007ffff74afaed in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7fffe288f700 (LWP 5124)):
#0  0x00007ffff7747a34 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x000000000041920c in cond_wait (c=9309216, m=9694912) at threading_pthread.c:206
#2  0x00007fffea5ead65 in loading_thread (none=0x0) at coverart.c:110
#3  0x00007ffff7743d40 in start_thread () from /lib/libpthread.so.0
#4  0x00007ffff74afaed in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7fffe8d9b700 (LWP 5121)):
#0  0x00007ffff74a7933 in poll () from /lib/libc.so.6
#1  0x00007ffff2a6c7d4 in ?? () from /usr/lib/libglib-2.0.so.0
#2  0x00007ffff2a6d0ba in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#3  0x00007ffff47e62d7 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#4  0x00007fffea5bc19d in gtkui_thread (ctx=0x0) at gtkui.c:1107
#5  0x00007ffff7743d40 in start_thread () from /lib/libpthread.so.0
#6  0x00007ffff74afaed in clone () from /lib/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fffe959c700 (LWP 5120)):
#0  0x00007ffff7747a34 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x000000000041920c in cond_wait (c=7773856, m=7772704) at threading_pthread.c:206
#2  0x00007fffeeeac60d in lfm_thread (ctx=0x0) at lastfm.c:701
#3  0x00007ffff7743d40 in start_thread () from /lib/libpthread.so.0
#4  0x00007ffff74afaed in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fffe9d9d700 (LWP 5119)):
#0  0x00007ffff7482ead in nanosleep () from /lib/libc.so.6
#1  0x00007ffff74aa054 in usleep () from /lib/libc.so.6
#2  0x00007fffef0bebdf in hotkeys_event_loop (unused=0x0) at hotkeys.c:383
#3  0x00007ffff7743d40 in start_thread () from /lib/libpthread.so.0
#4  0x00007ffff74afaed in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fffea59e700 (LWP 5118)):
#0  0x00007ffff7747a34 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x000000000041920c in cond_wait (c=7740880, m=7574544) at threading_pthread.c:206
#2  0x00007ffff5c8e128 in fetcher_thread (none=0x0) at artwork.c:774
#3  0x00007ffff7743d40 in start_thread () from /lib/libpthread.so.0
#4  0x00007ffff74afaed in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7ffff7fc5700 (LWP 5115)):
#0  0x00007ffff7744edf in pthread_join () from /lib/libpthread.so.0
#1  0x0000000000418e68 in thread_join (tid=140736940545792) at threading_pthread.c:98
---Type <return> to continue, or q <return> to quit---
#2  0x00007ffff609d70f in palsa_free () at alsa.c:491
#3  0x00000000004047bf in main (argc=1, argv=0x7fffffffe4c8) at main.c:913