1. (gdb) bt
2. #0  0x00007f64de647ef3 in switch_frame_buffer_free (fb=0x0, frameP=0x7f64b0190dc0) at src/switch_utils.c:213
3. #1  0x00007f64ba1d78fd in stream_thread_run (thread=<optimized out>, obj=0x7f64a4901848) at stream_endpoint.c:215
4. #2  0x00007f64de9a6873 in dummy_worker (opaque=0x7f64ce3289e0) at threadproc/unix/thread.c:151
5. #3  0x00007f64ddab74a4 in start_thread (arg=0x7f64b0191700) at pthread_create.c:456
6. #4  0x00007f64dd129d0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97
7. (gdb) bt full
8. #0  0x00007f64de647ef3 in switch_frame_buffer_free (fb=0x0, frameP=0x7f64b0190dc0) at src/switch_utils.c:213
9.         old_frame = 0x7f64a49028b8
10.         node = 0x7f64b0190d70
11.         __PRETTY_FUNCTION__ = "switch_frame_buffer_free"
12. #1  0x00007f64ba1d78fd in stream_thread_run (thread=<optimized out>, obj=0x7f64a4901848) at stream_endpoint.c:215
13.         frame = 0x7f64a4998620
14.         fin = 1
15.         pop = 0x7f64a4998620
16.         i = <optimized out>
17.         tech_pvt = 0x7f64a4901848
18.         ebytes = <optimized out>
19.         ebuf = 0x7f64a04a6800 "f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/f39/"...
20.         start = 1592878940393174
21.         __func__ = "stream_thread_run"
22.         __PRETTY_FUNCTION__ = "stream_thread_run"
23. #2  0x00007f64de9a6873 in dummy_worker (opaque=0x7f64ce3289e0) at threadproc/unix/thread.c:151
24.         thread = 0x7f64ce3289e0
25. #3  0x00007f64ddab74a4 in start_thread (arg=0x7f64b0191700) at pthread_create.c:456
26.         __res = <optimized out>
27.         pd = 0x7f64b0191700
28.         now = <optimized out>
29.         unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140070427891456, -1143441648889015643, 140070461426030, 140070461426031, 140070427643904, 3, 1074334817053921957, 1074133482072920741}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0,
30.               0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
31.         not_first_call = <optimized out>
32.         pagesize_m1 = <optimized out>
33.         sp = <optimized out>
34.         freesize = <optimized out>
35.         __PRETTY_FUNCTION__ = "start_thread"
36. #4  0x00007f64dd129d0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97
37. No locals.
38. (gdb)