(gdb) thread apply all bt full Thread 20 (Thread 0x7fffd0f73700 (LWP 20471)): #0 0x00007ffff608c1b8 in __lll_unlock_elision () from /usr/lib/libpthread.so.0 No symbol table info available. #1 0x00000000029f8d09 in BLI_unlock_thread (type=1) at /home/matthew/blender-git/blender/source/blender/blenlib/intern/threads.c:409 No locals. #2 0x00000000026a5201 in ViewerOperation::initImage (this=0x7fffd4002c20) at /home/matthew/blender-git/blender/source/blender/compositor/operations/COM_ViewerOperation.cpp:157 ima = 0x74dd008 lock = 0x74dd008 ibuf = 0x76f1058 #3 0x00000000026a4e12 in ViewerOperation::initExecution (this=0x7fffd4002c20) at /home/matthew/blender-git/blender/source/blender/compositor/operations/COM_ViewerOperation.cpp:72 No locals. #4 0x000000000265a9bc in ExecutionSystem::execute (this=0x7fffd4003970) at /home/matthew/blender-git/blender/source/blender/compositor/intern/COM_ExecutionSystem.cpp:150 operation = 0x7fffd4002c20 order = 0 index = 5 #5 0x000000000265a1ab in COM_execute (rd=0x6251aa0, editingtree=0x72854e8, rendering=0, viewSettings=0x6252668, displaySettings=0x6252708) at /home/matthew/blender-git/blender/source/blender/compositor/intern/COM_compositor.cpp:97 aspect = 0.5625 use_opencl = false twopass = false system = 0x7fffd4003970 #6 0x00000000028feed7 in ntreeCompositExecTree (ntree=0x72854e8, rd=0x6251aa0, rendering=0, do_preview=1, view_settings=0x6252668, display_settings=0x6252708) at /home/matthew/blender-git/blender/source/blender/nodes/composite/node_composite_tree.c:254 No locals. #7 0x0000000001df223d in compo_startjob (cjv=0x7689998, stop=0x74ddacc, do_update=0x74ddaca, progress=0x74ddad0) at /home/matthew/blender-git/blender/source/blender/editors/space_node/node_edit.c:262 cj = 0x7689998 ntree = 0x72854e8 scene = 0x6251988 #8 0x0000000001d6df9c in do_job_thread (job_v=0x74dda58) at /home/matthew/blender-git/blender/source/blender/windowmanager/intern/wm_jobs.c:336 ---Type to continue, or q to quit--- wm_job = 0x74dda58 #9 0x00000000029f891c in tslot_thread_start (tslot_p=0x72879a8) at /home/matthew/blender-git/blender/source/blender/blenlib/intern/threads.c:250 tslot = 0x72879a8 #10 0x00007ffff60830a2 in start_thread () from /usr/lib/libpthread.so.0 No symbol table info available. #11 0x00007ffff1e3a49d in clone () from /usr/lib/libc.so.6 No symbol table info available. Thread 8 (Thread 0x7ffff7f7b700 (LWP 20457)): #0 0x00007ffff608a12d in nanosleep () from /usr/lib/libpthread.so.0 No symbol table info available. #1 0x00007ffff68e303a in ?? () from /usr/lib/libopenal.so.1 No symbol table info available. #2 0x00007ffff68ee4c3 in ?? () from /usr/lib/libopenal.so.1 No symbol table info available. #3 0x00007ffff68e282a in ?? () from /usr/lib/libopenal.so.1 No symbol table info available. #4 0x00007ffff60830a2 in start_thread () from /usr/lib/libpthread.so.0 No symbol table info available. #5 0x00007ffff1e3a49d in clone () from /usr/lib/libc.so.6 No symbol table info available. Thread 7 (Thread 0x7fffe8bdd700 (LWP 20456)): #0 0x00007ffff1e319dd in poll () from /usr/lib/libc.so.6 No symbol table info available. #1 0x00007fffea6a1c91 in ?? () from /usr/lib/libpulse.so.0 No symbol table info available. #2 0x00007fffea6934bc in pa_mainloop_poll () from /usr/lib/libpulse.so.0 No symbol table info available. #3 0x00007fffea693b2e in pa_mainloop_iterate () from /usr/lib/libpulse.so.0 No symbol table info available. #4 0x00007fffea693be0 in pa_mainloop_run () from /usr/lib/libpulse.so.0 No symbol table info available. #5 0x00007fffea6a1c43 in ?? () from /usr/lib/libpulse.so.0 No symbol table info available. #6 0x00007fffea2424a8 in ?? () from /usr/lib/pulseaudio/libpulsecommon-4.0.so ---Type to continue, or q to quit--- No symbol table info available. #7 0x00007ffff60830a2 in start_thread () from /usr/lib/libpthread.so.0 No symbol table info available. #8 0x00007ffff1e3a49d in clone () from /usr/lib/libc.so.6 No symbol table info available. Thread 5 (Thread 0x7fffeb0bb700 (LWP 20454)): #0 0x00007ffff6088ff0 in sem_wait () from /usr/lib/libpthread.so.0 No symbol table info available. #1 0x00007ffff3ca814d in IlmThread_2_0::Semaphore::wait() () from /usr/lib/libIlmThread-2_0.so.10 No symbol table info available. #2 0x00007ffff3ca7601 in ?? () from /usr/lib/libIlmThread-2_0.so.10 No symbol table info available. #3 0x00007ffff60830a2 in start_thread () from /usr/lib/libpthread.so.0 No symbol table info available. #4 0x00007ffff1e3a49d in clone () from /usr/lib/libc.so.6 No symbol table info available. Thread 4 (Thread 0x7fffeb8bc700 (LWP 20453)): #0 0x00007ffff6088ff0 in sem_wait () from /usr/lib/libpthread.so.0 No symbol table info available. #1 0x00007ffff3ca814d in IlmThread_2_0::Semaphore::wait() () from /usr/lib/libIlmThread-2_0.so.10 No symbol table info available. #2 0x00007ffff3ca7601 in ?? () from /usr/lib/libIlmThread-2_0.so.10 No symbol table info available. #3 0x00007ffff60830a2 in start_thread () from /usr/lib/libpthread.so.0 No symbol table info available. #4 0x00007ffff1e3a49d in clone () from /usr/lib/libc.so.6 No symbol table info available. Thread 3 (Thread 0x7fffec0bd700 (LWP 20452)): #0 0x00007ffff6088ff0 in sem_wait () from /usr/lib/libpthread.so.0 No symbol table info available. #1 0x00007ffff3ca814d in IlmThread_2_0::Semaphore::wait() () from /usr/lib/libIlmThread-2_0.so.10 No symbol table info available. #2 0x00007ffff3ca7601 in ?? () from /usr/lib/libIlmThread-2_0.so.10 No symbol table info available. ---Type to continue, or q to quit--- #3 0x00007ffff60830a2 in start_thread () from /usr/lib/libpthread.so.0 No symbol table info available. #4 0x00007ffff1e3a49d in clone () from /usr/lib/libc.so.6 No symbol table info available. Thread 2 (Thread 0x7fffec8be700 (LWP 20451)): #0 0x00007ffff6088ff0 in sem_wait () from /usr/lib/libpthread.so.0 No symbol table info available. #1 0x00007ffff3ca814d in IlmThread_2_0::Semaphore::wait() () from /usr/lib/libIlmThread-2_0.so.10 No symbol table info available. #2 0x00007ffff3ca7601 in ?? () from /usr/lib/libIlmThread-2_0.so.10 No symbol table info available. #3 0x00007ffff60830a2 in start_thread () from /usr/lib/libpthread.so.0 No symbol table info available. #4 0x00007ffff1e3a49d in clone () from /usr/lib/libc.so.6 No symbol table info available. Thread 1 (Thread 0x7ffff7f9e800 (LWP 20447)): #0 0x00007ffff7fe1c24 in ?? () from /usr/lib/libdrm_intel.so.1 No symbol table info available. #1 0x00007ffff7fe1d32 in ?? () from /usr/lib/libdrm_intel.so.1 No symbol table info available. #2 0x00007ffff7fde099 in ?? () from /usr/lib/libdrm_intel.so.1 No symbol table info available. #3 0x00007ffff7fddff9 in drm_intel_gem_bo_context_exec () from /usr/lib/libdrm_intel.so.1 No symbol table info available. #4 0x00007fffe41108d9 in ?? () from /usr/lib/xorg/modules/dri/i965_dri.so No symbol table info available. #5 0x00007fffe4114761 in ?? () from /usr/lib/xorg/modules/dri/i965_dri.so No symbol table info available. #6 0x0000000001d7f539 in wmSubWindowScissorSet (win=0x6216ca8, swinid=1, srct=0x0, srct_pad=true) at /home/matthew/blender-git/blender/source/blender/windowmanager/intern/wm_subwindow.c:287 width = 1360 height = 820 __func__ = "wmSubWindowScissorSet" #7 0x0000000001d7f563 in wmSubWindowSet (win=0x6216ca8, swinid=1) at /home/matthew/blender-git/blender/source/blender/windowmanager/intern/wm_subwindow.c:293 ---Type to continue, or q to quit--- No locals. #8 0x0000000001d61f59 in wm_method_draw_triple (C=0x5cc0a88, win=0x6216ca8) at /home/matthew/blender-git/blender/source/blender/windowmanager/intern/wm_draw.c:593 wm = 0x6216b38 triple = 0x1d62494 screen = 0x6220c38 sa = 0x6216ca8 ar = 0x6216ca8 copytex = 0 paintcursor = 1 #9 0x0000000001d62872 in wm_draw_update (C=0x5cc0a88) at /home/matthew/blender-git/blender/source/blender/windowmanager/intern/wm_draw.c:846 wm = 0x6216b38 win = 0x6216ca8 drawmethod = 0 #10 0x0000000001d5e047 in WM_main (C=0x5cc0a88) at /home/matthew/blender-git/blender/source/blender/windowmanager/intern/wm.c:465 No locals. #11 0x0000000001d5d324 in main (argc=1, argv=0x7fffffffe6e8) at /home/matthew/blender-git/blender/source/creator/creator.c:1735 C = 0x5cc0a88 syshandle = 0x5ccd130 ba = 0x5ccb948