[Nouveau] [Bug 92438] Segfault in pushbuf_kref when running the android emulator (qemu) on nv50

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92438

--- Comment #20 from Jim Blandy <jimb at red-bean.com> ---
I'm able to reproduce a crash with a very similar stack on Fedora 22, using the
glium Rust OpenGL bindings: https://github.com/tomaka/glium

Here's the stack trace I get:

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff02f66fc in pushbuf_kref () from /lib64/libdrm_nouveau.so.2
Missing separate debuginfos, use: dnf debuginfo-install
bzip2-libs-1.0.6-14.fc22.x86_64 elfutils-libelf-0.163-4.fc22.x86_64
elfutils-libs-0.163-4.fc22.x86_64 expat-2.1.0-10.fc22.x86_64
libattr-2.4.47-10.fc22.x86_64 libcap-2.24-7.fc22.x86_64
libdrm-2.4.61-3.fc22.x86_64 libedit-3.1-12.20150325cvs.fc22.x86_64
libffi-3.1-7.fc22.x86_64 libgcc-5.1.1-4.fc22.x86_64
libpciaccess-0.13.3-0.3.fc22.x86_64 libselinux-2.3-10.fc22.x86_64
libstdc++-5.1.1-4.fc22.x86_64 libwayland-client-1.7.0-1.fc22.x86_64
libwayland-server-1.7.0-1.fc22.x86_64 libX11-1.6.3-1.fc22.x86_64
libX11-devel-1.6.3-1.fc22.x86_64 libXau-1.0.8-4.fc22.x86_64
libxcb-1.11-8.fc22.x86_64 libXcursor-devel-1.1.14-4.fc22.x86_64
libXdamage-1.1.4-6.fc22.x86_64 libXext-1.3.3-2.fc22.x86_64
libXfixes-5.0.1-4.fc22.x86_64 libXi-devel-1.7.4-2.fc22.x86_64
libXrender-0.9.9-1.fc22.x86_64 libxshmfence-1.2-1.fc22.x86_64
libXxf86vm-devel-1.1.4-1.fc22.x86_64 llvm-libs-3.5.0-9.fc22.x86_64
mesa-dri-drivers-10.6.9-1.20151008.fc22.x86_64
mesa-libEGL-10.6.9-1.20151008.fc22.x86_64
mesa-libgbm-10.6.9-1.20151008.fc22.x86_64
mesa-libGL-10.6.9-1.20151008.fc22.x86_64
mesa-libglapi-10.6.9-1.20151008.fc22.x86_64
ncurses-libs-5.9-18.20150214.fc22.x86_64 pcre-8.37-5.fc22.x86_64
systemd-libs-219-25.fc22.x86_64 xz-libs-5.2.0-2.fc22.x86_64
zlib-1.2.8-7.fc22.x86_64
(gdb) where
#0  0x00007ffff02f66fc in pushbuf_kref () from /lib64/libdrm_nouveau.so.2
#1  0x00007ffff02f6db9 in pushbuf_validate () from /lib64/libdrm_nouveau.so.2
#2  0x00007ffff0c28ecd in nvc0_state_validate () from
/usr/lib64/dri/nouveau_dri.so
#3  0x00007ffff0c33670 in nvc0_draw_vbo () from /usr/lib64/dri/nouveau_dri.so
#4  0x00007ffff08ec867 in st_draw_vbo () from /usr/lib64/dri/nouveau_dri.so
#5  0x00007ffff08be81c in vbo_draw_arrays () from /usr/lib64/dri/nouveau_dri.so
#6  0x00005555555b21b7 in tutorial_02::gl::Gl::DrawArrays (self=0x7ffff6868010,
mode=4, first=0, count=3) at
target/debug/build/glium-e8f4c0a69cec8d2d/out/gl_bindings.rs:11032
#7  0x00005555555acee9 in
tutorial_02::ops::draw::draw<glium::uniforms::uniforms::EmptyUniforms,&glium::vertex::buffer::VertexBuffer<tutorial_02::main::Vertex>>
(context=0x7ffff6868010, framebuffer=..., vertex_buffers=0x7fffffffd548,
indices=..., program=0x7fffffffd038, uniforms=0x5555557fc297 <const16333>,
draw_parameters=0x7fffffffccb0, dimensions=...) at src/ops/draw.rs:320
#8  0x00005555555aa751 in
tutorial_02::Frame.Surface::draw<&glium::vertex::buffer::VertexBuffer<tutorial_02::main::Vertex>,&glium::index::NoIndices,glium::uniforms::uniforms::EmptyUniforms>
(self=0x7fffffffce48, vertex_buffer=0x7fffffffd548,
index_buffer=0x7fffffffd210, program=0x7fffffffd038, uniforms=0x5555557fc297
<const16333>, draw_parameters=0x7fffffffccb0) at src/lib.rs:1083
#9  0x0000555555576f84 in tutorial_02::main () at examples/tutorial-02.rs:48
#10 0x00005555557ccf85 in
sys_common::unwind::try::try_fn::h13449604025847140769 ()
#11 0x00005555557ca969 in __rust_try ()
#12 0x00005555557ccc20 in rt::lang_start::h426b3aba4736785fsbx ()
#13 0x00005555555b31da in main ()
(gdb)

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