UT2004 Linux freeze in legacy OpenGL renderer during dynamic index buffer upload (Mesa Gallium) - ldg race server, rainbow race map.

Using host libthread_db library "/usr/lib/libthread_db.so.1".
0x00007faf194939ab in __lll_lock_wait_private () from /usr/lib/libc.so.6
(gdb) bt full
#0  0x00007faf194939ab in __lll_lock_wait_private () from /usr/lib/libc.so.6
No symbol table info available.
#1  0x00007faf194a6b58 in ?? () from /usr/lib/libc.so.6
No symbol table info available.
#2  0x00007faf19525710 in backtrace_symbols () from /usr/lib/libc.so.6
No symbol table info available.
#3  0x0000000000b29bb9 in ?? ()
No symbol table info available.
#4  <signal handler called>
No symbol table info available.
#5  0x00007faf1949890c in ?? () from /usr/lib/libc.so.6
No symbol table info available.
#6  0x00007faf1943e3a0 in raise () from /usr/lib/libc.so.6
No symbol table info available.
#7  0x00007faf1942557a in abort () from /usr/lib/libc.so.6
No symbol table info available.
#8  0x00007faf19426613 in ?? () from /usr/lib/libc.so.6
No symbol table info available.
#9  0x00007faf194a2d25 in ?? () from /usr/lib/libc.so.6
No symbol table info available.
#10 0x00007faf194a60ec in ?? () from /usr/lib/libc.so.6
No symbol table info available.
#11 0x00007faf194a7341 in ?? () from /usr/lib/libc.so.6
No symbol table info available.
#12 0x00007faf194a7c1e in ?? () from /usr/lib/libc.so.6
No symbol table info available.
#13 0x00007faf194a93c9 in posix_memalign () from /usr/lib/libc.so.6
No symbol table info available.
#14 0x00007faf160c05db in ?? () from /usr/lib/libgallium-25.3.3-arch1.2.so
No symbol table info available.
#15 0x00007faf160c16f7 in ?? () from /usr/lib/libgallium-25.3.3-arch1.2.so
No symbol table info available.
#16 0x00007faf15df1b2d in ?? () from /usr/lib/libgallium-25.3.3-arch1.2.so
No symbol table info available.
#17 0x00007faf15df2886 in ?? () from /usr/lib/libgallium-25.3.3-arch1.2.so
No symbol table info available.
#18 0x00007faf15885279 in ?? () from /usr/lib/libgallium-25.3.3-arch1.2.so
No symbol table info available.
#19 0x00007faf15830329 in ?? () from /usr/lib/libgallium-25.3.3-arch1.2.so
No symbol table info available.
#20 0x00007faf15707911 in ?? () from /usr/lib/libgallium-25.3.3-arch1.2.so
No symbol table info available.
#21 0x00007faf1570801d in ?? () from /usr/lib/libgallium-25.3.3-arch1.2.so
No symbol table info available.
#22 0x00007faf15828492 in ?? () from /usr/lib/libgallium-25.3.3-arch1.2.so
No symbol table info available.
#23 0x0000000000d3857c in FOpenGLIndexBufferARB_VBO::AddIndices(FIndexBuffer*) ()
No symbol table info available.
#24 0x0000000000d2d461 in FOpenGLRenderInterface::SetDynamicIndexBuffer(FIndexBuffer*, int) ()
No symbol table info available.
#25 0x000000000082ed8a in FStaticMeshBatchList::Render(FSceneNode*, FRenderInterface*) ()
No symbol table info available.
#26 0x0000000000812c4a in RenderLevel(FLevelSceneNode*, FRenderInterface*) ()
No symbol table info available.
#27 0x00000000007f3d44 in FLevelSceneNode::Render(FRenderInterface*) ()
No symbol table info available.
#28 0x00000000007f89e0 in FPlayerSceneNode::Render(FRenderInterface*) ()
No symbol table info available.
#29 0x000000000069d61e in UGameEngine::Draw(UViewport*, int, unsigned char*, int*) ()
No symbol table info available.
#30 0x0000000000d1d106 in USDLViewport::Repaint(int) ()
--Type <RET> for more, q to quit, c to continue without paging--RET
No symbol table info available.
#31 0x0000000000d1ab09 in USDLClient::Tick() ()
No symbol table info available.
#32 0x00000000006a0f54 in UGameEngine::Tick(float) ()
No symbol table info available.
#33 0x000000000053d2a3 in CMainLoop::RunLoop() ()
No symbol table info available.
#34 0x000000000053344f in ?? ()
No symbol table info available.
#35 0x000000000052f1a0 in main ()
No symbol table info available.