> I'd appreciate a backtrace from gdb since I cannot reproduce it on a > system with more than one CPU.
I don't have a lot of experience doing that, let's see if the output below is useful with several -dbgsym packages installed. [ Note that temporarily booting with GRUB_CMDLINE_LINUX="nr_cpus=1" makes your system to become a single-CPU system very easily ] Thanks. #0 svt_circular_buffer_empty_check (bufferPtr=0x0) at Codec/./Source/Lib/Codec/sys_resource_manager.c:134 #1 svt_get_empty_object.isra.0 (empty_fifo_ptr=0x7f691201fcd0, wrapper_dbl_ptr=0x7f6933191c70) at Codec/./Source/Lib/Codec/sys_resource_manager.c:783 #2 0x00007f6936e22fd5 in lib_svt_encoder_send_error_exit (hComponent=<optimized out>, error_code=4874) at Globals/./Source/Lib/Globals/enc_handle.c:5765 #3 0x00007f6936fd52f0 in svt_aom_picture_manager_kernel_iter (context=0x7f6912052720) at Codec/./Source/Lib/Codec/pic_manager_process.c:816 #4 0x00007f6937060b27 in svt_kernel_dispatcher_run (dispatcher=<optimized out>) at Codec/./Source/Lib/Codec/kernel_dispatch.c:41 #5 svt_get_empty_object.isra.0 (empty_fifo_ptr=0x7f691f2a0b20, wrapper_dbl_ptr=0x7f6933191f30) at Codec/./Source/Lib/Codec/sys_resource_manager.c:789 #6 0x00007f6936fd478a in svt_aom_picture_manager_kernel_iter (context=0x7f6912052720) at Codec/./Source/Lib/Codec/pic_manager_process.c:625 #7 0x00007f6937060b27 in svt_kernel_dispatcher_run (dispatcher=<optimized out>) at Codec/./Source/Lib/Codec/kernel_dispatch.c:41 #8 svt_get_empty_object.isra.0 (empty_fifo_ptr=0x7f691f2a0b20, wrapper_dbl_ptr=0x7f69331920c0) at Codec/./Source/Lib/Codec/sys_resource_manager.c:789 #9 0x00007f6936fd478a in svt_aom_picture_manager_kernel_iter (context=0x7f6912052720) at Codec/./Source/Lib/Codec/pic_manager_process.c:625 #10 0x00007f6937060b27 in svt_kernel_dispatcher_run (dispatcher=<optimized out>) at Codec/./Source/Lib/Codec/kernel_dispatch.c:41 #11 svt_get_empty_object.isra.0 (empty_fifo_ptr=0x7f691f2a0b20, wrapper_dbl_ptr=0x7f6933192250) at Codec/./Source/Lib/Codec/sys_resource_manager.c:789 #12 0x00007f6936fd478a in svt_aom_picture_manager_kernel_iter (context=0x7f6912052720) at Codec/./Source/Lib/Codec/pic_manager_process.c:625 #13 0x00007f6937060b27 in svt_kernel_dispatcher_run (dispatcher=<optimized out>) at Codec/./Source/Lib/Codec/kernel_dispatch.c:41 #14 svt_get_empty_object.isra.0 (empty_fifo_ptr=0x7f691f2a0b20, wrapper_dbl_ptr=0x7f69331923e0) at Codec/./Source/Lib/Codec/sys_resource_manager.c:789 #15 0x00007f6936fd478a in svt_aom_picture_manager_kernel_iter (context=0x7f6912052720) at Codec/./Source/Lib/Codec/pic_manager_process.c:625 #16 0x00007f6937060b27 in svt_kernel_dispatcher_run (dispatcher=<optimized out>) at Codec/./Source/Lib/Codec/kernel_dispatch.c:41 #17 svt_get_empty_object.isra.0 (empty_fifo_ptr=0x7f691f2a0b20, wrapper_dbl_ptr=0x7f6933192570) at Codec/./Source/Lib/Codec/sys_resource_manager.c:789 #18 0x00007f6936fd478a in svt_aom_picture_manager_kernel_iter (context=0x7f6912052720) at Codec/./Source/Lib/Codec/pic_manager_process.c:625 #19 0x00007f6937060b27 in svt_kernel_dispatcher_run (dispatcher=<optimized out>) at Codec/./Source/Lib/Codec/kernel_dispatch.c:41 #20 svt_get_empty_object.isra.0 (empty_fifo_ptr=0x7f691f2a0b20, wrapper_dbl_ptr=0x7f6933192700) at Codec/./Source/Lib/Codec/sys_resource_manager.c:789 #21 0x00007f6936fd478a in svt_aom_picture_manager_kernel_iter (context=0x7f6912052720) at Codec/./Source/Lib/Codec/pic_manager_process.c:625 #22 0x00007f6937060b27 in svt_kernel_dispatcher_run (dispatcher=<optimized out>) at Codec/./Source/Lib/Codec/kernel_dispatch.c:41 #23 svt_get_empty_object.isra.0 (empty_fifo_ptr=0x7f691f2a0b20, wrapper_dbl_ptr=0x7f6933192890) at Codec/./Source/Lib/Codec/sys_resource_manager.c:789 #24 0x00007f6936fd478a in svt_aom_picture_manager_kernel_iter (context=0x7f6912052720) at Codec/./Source/Lib/Codec/pic_manager_process.c:625 #25 0x00007f6937060b27 in svt_kernel_dispatcher_run (dispatcher=<optimized out>) at Codec/./Source/Lib/Codec/kernel_dispatch.c:41 #26 svt_get_empty_object.isra.0 (empty_fifo_ptr=0x7f691f2a0b20, wrapper_dbl_ptr=0x7f6933192a20) at Codec/./Source/Lib/Codec/sys_resource_manager.c:789 #27 0x00007f6936fd478a in svt_aom_picture_manager_kernel_iter (context=0x7f6912052720) at Codec/./Source/Lib/Codec/pic_manager_process.c:625 #28 0x00007f6937060b27 in svt_kernel_dispatcher_run (dispatcher=<optimized out>) at Codec/./Source/Lib/Codec/kernel_dispatch.c:41 #29 svt_get_empty_object.isra.0 (empty_fifo_ptr=0x7f691f2a0b20, wrapper_dbl_ptr=0x7f6933192bb0) at Codec/./Source/Lib/Codec/sys_resource_manager.c:789 #30 0x00007f6936fd478a in svt_aom_picture_manager_kernel_iter (context=0x7f6912052720) at Codec/./Source/Lib/Codec/pic_manager_process.c:625 #31 0x00007f6937060b27 in svt_kernel_dispatcher_run (dispatcher=<optimized out>) at Codec/./Source/Lib/Codec/kernel_dispatch.c:41 #32 svt_get_empty_object.isra.0 (empty_fifo_ptr=0x7f691f2a0b20, wrapper_dbl_ptr=0x7f6933192d40) at Codec/./Source/Lib/Codec/sys_resource_manager.c:789 #33 0x00007f6936fd478a in svt_aom_picture_manager_kernel_iter (context=0x7f6912052720) at Codec/./Source/Lib/Codec/pic_manager_process.c:625 #34 0x00007f6937060b27 in svt_kernel_dispatcher_run (dispatcher=<optimized out>) at Codec/./Source/Lib/Codec/kernel_dispatch.c:41 #35 svt_get_empty_object.isra.0 (empty_fifo_ptr=0x7f691f2a0b20, wrapper_dbl_ptr=0x7f6933192ed0) at Codec/./Source/Lib/Codec/sys_resource_manager.c:789 #36 0x00007f6936fd478a in svt_aom_picture_manager_kernel_iter (context=0x7f6912052720) at Codec/./Source/Lib/Codec/pic_manager_process.c:625 #37 0x00007f6937060b27 in svt_kernel_dispatcher_run (dispatcher=<optimized out>) at Codec/./Source/Lib/Codec/kernel_dispatch.c:41 #38 svt_get_empty_object.isra.0 (empty_fifo_ptr=0x7f691f2a0b20, wrapper_dbl_ptr=0x7f6933193060) at Codec/./Source/Lib/Codec/sys_resource_manager.c:789 #39 0x00007f6936fd478a in svt_aom_picture_manager_kernel_iter (context=0x7f6912052720) at Codec/./Source/Lib/Codec/pic_manager_process.c:625 #40 0x00007f6937060b27 in svt_kernel_dispatcher_run (dispatcher=<optimized out>) at Codec/./Source/Lib/Codec/kernel_dispatch.c:41 #41 svt_get_empty_object.isra.0 (empty_fifo_ptr=0x7f691f2a0b20, wrapper_dbl_ptr=0x7f69331931f0) at Codec/./Source/Lib/Codec/sys_resource_manager.c:789 #42 0x00007f6936fd478a in svt_aom_picture_manager_kernel_iter (context=0x7f6912052720) at Codec/./Source/Lib/Codec/pic_manager_process.c:625 #43 0x00007f6937060b27 in svt_kernel_dispatcher_run (dispatcher=<optimized out>) at Codec/./Source/Lib/Codec/kernel_dispatch.c:41 #44 svt_get_empty_object.isra.0 (empty_fifo_ptr=0x7f691f2a0b20, wrapper_dbl_ptr=0x7f6933193380) at Codec/./Source/Lib/Codec/sys_resource_manager.c:789 #45 0x00007f6936fd478a in svt_aom_picture_manager_kernel_iter (context=0x7f6912052720) at Codec/./Source/Lib/Codec/pic_manager_process.c:625 #46 0x00007f6937060b27 in svt_kernel_dispatcher_run (dispatcher=<optimized out>) at Codec/./Source/Lib/Codec/kernel_dispatch.c:41 #47 svt_get_empty_object.isra.0 (empty_fifo_ptr=0x7f691f2a0b20, wrapper_dbl_ptr=0x7f6933193510) at Codec/./Source/Lib/Codec/sys_resource_manager.c:789 #48 0x00007f6936fd478a in svt_aom_picture_manager_kernel_iter (context=0x7f6912052720) at Codec/./Source/Lib/Codec/pic_manager_process.c:625 #49 0x00007f6937060b27 in svt_kernel_dispatcher_run (dispatcher=<optimized out>) at Codec/./Source/Lib/Codec/kernel_dispatch.c:41 #50 svt_get_empty_object.isra.0 (empty_fifo_ptr=0x7f691f2a0b20, wrapper_dbl_ptr=0x7f69331936a0) at Codec/./Source/Lib/Codec/sys_resource_manager.c:789 #51 0x00007f6936fd478a in svt_aom_picture_manager_kernel_iter (context=0x7f6912052720) at Codec/./Source/Lib/Codec/pic_manager_process.c:625 #52 0x00007f6937060b27 in svt_kernel_dispatcher_run (dispatcher=<optimized out>) at Codec/./Source/Lib/Codec/kernel_dispatch.c:41 #53 svt_get_empty_object.isra.0 (empty_fifo_ptr=0x7f691f2a0b20, wrapper_dbl_ptr=0x7f6933193830) at Codec/./Source/Lib/Codec/sys_resource_manager.c:789 #54 0x00007f6936fd478a in svt_aom_picture_manager_kernel_iter (context=0x7f6912052720) at Codec/./Source/Lib/Codec/pic_manager_process.c:625 #55 0x00007f6937060b27 in svt_kernel_dispatcher_run (dispatcher=<optimized out>) at Codec/./Source/Lib/Codec/kernel_dispatch.c:41 #56 svt_get_empty_object.isra.0 (empty_fifo_ptr=0x7f691f2a0b20, wrapper_dbl_ptr=0x7f69331939c0) at Codec/./Source/Lib/Codec/sys_resource_manager.c:789 #57 0x00007f6936fd478a in svt_aom_picture_manager_kernel_iter (context=0x7f6912052720) at Codec/./Source/Lib/Codec/pic_manager_process.c:625 #58 0x00007f6937060b27 in svt_kernel_dispatcher_run (dispatcher=<optimized out>) at Codec/./Source/Lib/Codec/kernel_dispatch.c:41 #59 svt_get_empty_object.isra.0 (empty_fifo_ptr=0x7f691f2a0b20, wrapper_dbl_ptr=0x7f6933193b50) at Codec/./Source/Lib/Codec/sys_resource_manager.c:789 #60 0x00007f6936fd478a in svt_aom_picture_manager_kernel_iter (context=0x7f6912052720) at Codec/./Source/Lib/Codec/pic_manager_process.c:625 #61 0x00007f6936e29626 in svt_kernel_dispatcher_run (dispatcher=<optimized out>) at Codec/./Source/Lib/Codec/kernel_dispatch.c:41 #62 svt_av1_enc_send_picture (svt_enc_component=<optimized out>, p_buffer=0x7f6933193cb0) at Globals/./Source/Lib/Globals/enc_handle.c:5633 #63 0x00007f693ed20204 in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.63 #64 0x00007f693e9cec59 in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.63 #65 0x00007f693e9cee65 in avcodec_send_frame () from /usr/lib/x86_64-linux-gnu/libavcodec.so.63 #66 0x0000557e7bfc3003 in encode_frame (of=0x557eb8b06780, ost=ost@entry=0x557eb8b7f080, frame=frame@entry=0x0, pkt=0x7f692c000a80) at src/fftools/ffmpeg_enc.c:644 #67 0x0000557e7bfc34d0 in frame_encode (ost=0x557eb8b7f080, frame=0x0, pkt=<optimized out>) at src/fftools/ffmpeg_enc.c:809 #68 encoder_thread (arg=<optimized out>) at src/fftools/ffmpeg_enc.c:913 #69 0x0000557e7bfded35 in task_wrapper (arg=0x557eb8b79288) at src/fftools/ffmpeg_sched.c:2723 #70 0x00007f693dc9edb8 in ?? () from /usr/lib/x86_64-linux-gnu/libc.so.6 #71 0x00007f693dd1cf98 in ?? () from /usr/lib/x86_64-linux-gnu/libc.so.6
