(gdb) bt
#0  0x00007ffff683453d in write () at ../sysdeps/unix/syscall-template.S:82
#1  0x0000000000407279 in tvh_write (fd=37, buf=0x7fffcc035a00, len=18800) at /home/john/projects/tvheadend/src/wrappers.c:58
#2  0x0000000000441af0 in pass_muxer_write (m=0x7fffc00013f0, data=<optimized out>, size=<optimized out>) at /home/john/projects/tvheadend/src/muxer/muxer_pass.c:206
#3  0x0000000000441b7a in pass_muxer_write_ts (m=0x7fffc00013f0, pb=<optimized out>) at /home/john/projects/tvheadend/src/muxer/muxer_pass.c:236
#4  pass_muxer_write_pkt (m=0x7fffc00013f0, smt=<optimized out>, data=0x7fffcc011070) at /home/john/projects/tvheadend/src/muxer/muxer_pass.c:255
#5  0x00000000004395df in http_stream_run (hc=0x7fffd27fbd30, sq=0x7fffd27fb260, name=0x7fffd27fb210 "TV4", mc=<optimized out>, raw=0)
    at /home/john/projects/tvheadend/src/webui/webui.c:224
#6  0x000000000043999a in http_stream_channel (hc=0x7fffd27fbd30, ch=0x6baf50) at /home/john/projects/tvheadend/src/webui/webui.c:704
#7  0x0000000000439df8 in http_stream (hc=0x7fffd27fbd30, remain=<optimized out>, opaque=<optimized out>) at /home/john/projects/tvheadend/src/webui/webui.c:765
#8  0x00000000004098ad in http_exec (hc=0x7fffd27fbd30, hp=0x844240, remain=0x7fffd27fb93c "channel") at /home/john/projects/tvheadend/src/http.c:343
#9  0x0000000000409ce3 in http_cmd_get (hc=0x7fffd27fbd30) at /home/john/projects/tvheadend/src/http.c:374
#10 0x0000000000409e7a in http_process_request (spill=0x7fffd27fbe10, hc=0x7fffd27fbd30) at /home/john/projects/tvheadend/src/http.c:454
#11 process_request (hc=0x7fffd27fbd30, spill=0x7fffd27fbe10) at /home/john/projects/tvheadend/src/http.c:520
#12 0x000000000040a23b in http_serve_requests (spill=0x7fffd27fbe10, hc=0x7fffd27fbd30) at /home/john/projects/tvheadend/src/http.c:754
#13 http_serve (fd=37, opaque=<optimized out>, peer=<optimized out>, self=<optimized out>) at /home/john/projects/tvheadend/src/http.c:797
#14 0x00000000004086b7 in tcp_server_start (aux=0x7fffec004540) at /home/john/projects/tvheadend/src/tcp.c:402
#15 0x00007ffff682cda6 in start_thread (arg=0x7fffd27fc700) at pthread_create.c:305
#16 0x00007ffff626e99d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115