Public bug reported:
Ubuntu mesa contains the patch 113_fix_tls.diff that triggers a freezing impact:
+++
extern __thread void *u_current_user
- __attribute__((tls_model("initial-exec")));
+ __attribute__((tls_model("global-dynamic")));
+++
JogAmp JOGL have triaged that this bug are introduced by this ubuntu local
patch:
https://jogamp.org/bugzilla/show_bug.cgi?id=566
I am able to reproduce this bug using Ubuntu 11.10 + mesa 7.11
GL_VENDOR: X.Org
GL_RENDERER: Gallium 0.4 on AMD RV770
GL_VERSION: 2.1 Mesa 7.11
Testcase (large ~150mb)
wget http://processing.googlecode.com/files/processing-2.0a5-linux.tgz
tar zxvf processing-2.0a5-linux.tgz
cd processing-2.0a5
./processing
#open File->Examples... Pick Topics->Geometry-> double click on RGBCube
#run the sketch ctrl-r
#output below:
xranby@hp ~/processing-2.0a5 $ ./processing
Info: XInitThreads() called for concurrent Thread support
<window opens>
<freeze>
Backtrace of the stalled window thread.
(gdb) bt
#0 0x00118e3f in pthread_mutex_lock ()
from /lib/i386-linux-gnu/libpthread.so.0
#1 0x0058701b in ?? () from /lib/ld-linux.so.2
#2 0x0059781d in ___tls_get_addr () from /lib/ld-linux.so.2
#3 0x0305e558 in ?? () from /usr/lib/i386-linux-gnu/dri/libgallium.so
#4 0x0218e3be in dri_make_current ()
from /usr/lib/i386-linux-gnu/dri/r600_dri.so
#5 0x0216b1bf in ?? () from /usr/lib/i386-linux-gnu/dri/r600_dri.so
#6 0x074e4b8d in ?? () from /usr/lib/i386-linux-gnu/mesa/libGL.so.1
#7 0x074bcb97 in glXMakeCurrentReadSGI ()
from /usr/lib/i386-linux-gnu/mesa/libGL.so.1
#8 0x082f329a in
Java_jogamp_opengl_x11_glx_GLX_dispatch_1glXMakeContextCurrent1(__complex
__complex __complex __complex __complex) ()
from
/tmp/jogamp.tmp.cache_000000/jln4751330094528893169/jln2305029403340098767/libjogl_desktop.so
** Affects: mesa (Ubuntu)
Importance: Undecided
Status: New
--
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to mesa in Ubuntu.
https://bugs.launchpad.net/bugs/965798
Title:
Multithreaded tls_model("global-dynamic") glXMakeContextCurrent
___tls_get_addr () freeze/deadlock
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https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/965798/+subscriptions
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