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[Bug 1307953] Re: SIGSEGV in _XPutPixel32 on armhf

To: desktop-packages@xxxxxxxxxxxxxxxxxxx
From: Connor Imes <connor.k.imes@xxxxxxxxx>
Date: Mon, 19 Oct 2015 19:43:00 -0000
Reply-to: Bug 1307953 <1307953@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
I can confirm this issue on an ODROID-XU3.  There should be enough
information here for a developer to have a look.

Moving to libx11 package.

Here is the latest backtrace from Servo running on Ubuntu 14.04.3 with
libx11-6 version 2:1.6.2-1ubuntu2.

#0  0xb6c0c7d8 in _XPutPixel32 (ximage=0x2dace068, x=<optimized out>, 
    y=<optimized out>, pixel=0) at ../../src/ImUtil.c:733
#1  0xb6c0cc22 in _XSetImage (srcimg=srcimg@entry=0x2dacde40, 
    dstimg=dstimg@entry=0x2dace068, x=x@entry=0, y=y@entry=0)
    at ../../src/ImUtil.c:949
#2  0xb6c0a400 in XGetSubImage (dpy=<optimized out>, d=<optimized out>, 
    x=<optimized out>, y=<optimized out>, width=width@entry=288, 
    height=height@entry=512, plane_mask=plane_mask@entry=4294967295, 
    format=format@entry=2, dest_image=dest_image@entry=0x2dace068, 
    dest_x=dest_x@entry=0, dest_y=dest_y@entry=0) at ../../src/GetImage.c:129
#3  0xb6d1c804 in swrastGetImage (read=<optimized out>, x=<optimized out>, 
    y=<optimized out>, w=288, h=512, data=0x0, loaderPrivate=0x2daa3998)
    at ../../../../src/glx/drisw_glx.c:237
#4  0xb4a58ab2 in swrastSetTexBuffer2 (pDRICtx=<optimized out>, 
    target=<optimized out>, texture_format=8410, dPriv=<optimized out>)
    at ../../../../../../../src/mesa/drivers/dri/swrast/swrast.c:100
#5  0xb6d1c6a2 in drisw_bind_tex_image (dpy=<optimized out>, 
    drawable=<optimized out>, buffer=<optimized out>, 
    attrib_list=<optimized out>) at ../../../../src/glx/drisw_glx.c:328
#6  0xb6d00e88 in __glXBindTexImageEXT (dpy=<optimized out>, 
    drawable=<optimized out>, buffer=<optimized out>, 
    attrib_list=<optimized out>) at ../../../../src/glx/glxcmds.c:2416
#7  0x2c43d530 in layers::platform::linux::surface::PixmapNativeSurface::bind_to_texture (self=0xa781f0a4, display=0xbeffe2f8, texture=0xb5c750a8)
    at /home/odroid/.cargo/git/checkouts/rust-layers-22b481e3852f313f/master/src/platform/linux/surface.rs:218
#8  0x2c420c44 in layers::platform::surface::NativeSurface::bind_to_texture (
    self=0xa781f0a0, display=0xbeffe2f8, texture=0xb5c750a8)
    at /home/odroid/.cargo/git/checkouts/rust-layers-22b481e3852f313f/master/src/platform/surface.rs:82
#9  0x2c420a84 in layers::tiling::Tile::create_texture (self=0xb5c7509c, 
    display=0xbeffe2f8)
    at /home/odroid/.cargo/git/checkouts/rust-layers-22b481e3852f313f/master/src/tiling.rs:82
#10 0x2c434d40 in layers::tiling::TileGrid::create_textures (self=0xb5c676e8, 
    display=0xbeffe2f8)
    at /home/odroid/.cargo/git/checkouts/rust-layers-22b481e3852f313f/master/src/tiling.rs:331
#11 0x2a2037a4 in servo::layers::Layer<T>::create_textures (self=0xb5c67608, 
    display=0xbeffe2f8)
    at /home/odroid/.cargo/git/checkouts/rust-layers-22b481e3852f313f/master/src/layers.rs:175
#12 0x2a203008 in servo::rendergl::RenderContext::render_layer<compositing::compositor_layer::CompositorData> (self=0xbeffe298, layer=..., 
    transform=0xbeffe23c, projection=0xbeffe1b4, clip_rect=..., 
    gfx_context=0xbeffe2f8)
    at /home/odroid/.cargo/git/checkouts/rust-layers-22b481e3852f313f/master/src/rendergl.rs:589
#13 0x2a1ffd38 in servo::rendergl::RenderContext::render_3d_context<compositing::compositor_layer::CompositorData> (self=0xbeffe298, context=0xb5c300c0, 
    transform=0xbeffe23c, projection=0xbeffe1b4, gfx_context=0xbeffe2f8)
    at /home/odroid/.cargo/git/checkouts/rust-layers-22b481e3852f313f/master/src/rendergl.rs:775
#14 0x2a1ffde8 in servo::rendergl::RenderContext::render_3d_context<compositing::compositor_layer::CompositorData> (self=0xbeffe298, context=0xbeffe180, 
    transform=0xbeffe23c, projection=0xbeffe1b4, gfx_context=0xbeffe2f8)
    at /home/odroid/.cargo/git/checkouts/rust-layers-22b481e3852f313f/master/src/rendergl.rs:785
#15 0x2a1fc230 in servo::rendergl::render_scene<compositing::compositor_layer::CompositorData> (root_layer=..., render_context=..., scene=0xb5c672e0)
    at /home/odroid/.cargo/git/checkouts/rust-layers-22b481e3852f313f/master/src/rendergl.rs:816
#16 0x2a1fb844 in fnfn ()
    at /local/git-ckimes/servo/components/compositing/compositor.rs:1566
#17 0x2a1fb330 in servo::time::profile<(),closure> (category=Compositing, 
    meta=..., profiler_chan=..., callback=...)
    at /local/git-ckimes/servo/components/profile_traits/time.rs:103
#18 0x2a1f6314 in servo::compositor::IOCompositor<Window>::composite_specific_target (self=0xb5c67200, target=Window)
    at /local/git-ckimes/servo/components/compositing/compositor.rs:1554
#19 0x2a225980 in servo::compositor::IOCompositor<Window>::composite (
    self=0xb5c67200)
    at /local/git-ckimes/servo/components/compositing/compositor.rs:1512
#20 0x2a1a6f10 in servo::compositor::IOCompositor<Window>.CompositorEventListener::handle_events (self=0xb5c67200, messages=...)
    at /local/git-ckimes/servo/components/compositing/compositor.rs:1846
#21 0x2a3dab68 in servo::Browser::handle_events (self=0xbeffecc0, events=...)
    at lib.rs:175
#22 0x2a152634 in servo::main () at main.rs:70
#23 0x2c6b7fc8 in sys_common::unwind::try::try_fn::h15852526810580475186 ()
#24 0x2c6b534c in __rust_try ()
#25 0x2c6b7b30 in rt::lang_start::h5db76677823c9d52Jkx ()
#26 0x2a22b484 in main () at /local/git-ckimes/servo/components/msg/lib.rs:385

** Package changed: xorg (Ubuntu) => libx11 (Ubuntu)

** Changed in: libx11 (Ubuntu)
   Importance: Undecided => Medium

** Changed in: libx11 (Ubuntu)
       Status: Confirmed => Triaged

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https://bugs.launchpad.net/bugs/1307953

Title:
  SIGSEGV in _XPutPixel32 on armhf

Status in libx11 package in Ubuntu:
  Triaged

Bug description:
  I'm running Ubuntu 12.04 on a Pandaboard 4430 (armhf). (I also tested it on 13.04 Ubuntu, and the same error occurs.)
  Servo (experimental browser engine by Mozilla) and this little example: http://sil2100.vexillium.org/content/fglrx-test.c are crashing with the same backtrace: (They're both calling the glXBindTexImageEXT function.)

  fglrx_test.c segfault backtrace:
  #0  _XPutPixel32 (pixel=49344, y=<optimized out>, x=<optimized out>, ximage=0x210378) at ../../src/ImUtil.c:739
  #1  _XPutPixel32 (ximage=0x210378, x=<optimized out>, y=<optimized out>, pixel=49344) at ../../src/ImUtil.c:726
  #2  0xb6f00960 in _XSetImage (srcimg=0x220aa8, dstimg=0x210378, x=0, y=0) at ../../src/ImUtil.c:957
  #3  0xb6efe25c in XGetSubImage (dpy=<optimized out>, d=<optimized out>, x=<optimized out>, y=<optimized out>, width=64, height=64, plane_mask=4294967295, format=2, 
      dest_image=0x210378, dest_x=0, dest_y=0) at ../../src/GetImage.c:129
  #4  0xb6ecd408 in swrastGetImage (read=<optimized out>, x=<optimized out>, y=<optimized out>, w=<optimized out>, h=64, data=0x0, loaderPrivate=0x2100b8) at drisw_glx.c:228
  #5  0xb6fd651a in swrastSetTexBuffer2 (pDRICtx=<optimized out>, target=<optimized out>, texture_format=<optimized out>, dPriv=<optimized out>) at swrast.c:97
  #6  0xb6ecd4f6 in drisw_bind_tex_image (dpy=<optimized out>, drawable=<optimized out>, buffer=<optimized out>, attrib_list=<optimized out>) at drisw_glx.c:319
  #7  0xb6eb4ff4 in __glXBindTexImageEXT (dpy=<optimized out>, drawable=<optimized out>, buffer=<optimized out>, attrib_list=<optimized out>) at glxcmds.c:2429
  #8  0x00009638 in main () at fglrx_test.c:218

  SERVO segfault backtrace:
  #0  _XPutPixel32 (pixel=8388608, y=<optimized out>, x=<optimized out>, ximage=0x3f0d48) at ../../src/ImUtil.c:739
  #1  _XPutPixel32 (ximage=0x3f0d48, x=<optimized out>, y=<optimized out>, pixel=8388608) at ../../src/ImUtil.c:726
  #2  0xb53a8960 in _XSetImage (srcimg=0x3f0dd0, dstimg=0x3f0d48, x=0, y=0) at ../../src/ImUtil.c:957
  #3  0xb53a625c in XGetSubImage (dpy=<optimized out>, d=<optimized out>, x=<optimized out>, y=<optimized out>, width=512, height=512, plane_mask=4294967295, format=2, 
      dest_image=0x3f0d48, dest_x=0, dest_y=0) at ../../src/GetImage.c:129
  #4  0xb54a2408 in swrastGetImage (read=<optimized out>, x=<optimized out>, y=<optimized out>, w=<optimized out>, h=512, data=0x0, loaderPrivate=0x3aa8f0) at drisw_glx.c:228
  #5  0xb4a5351a in swrastSetTexBuffer2 (pDRICtx=<optimized out>, target=<optimized out>, texture_format=<optimized out>, dPriv=<optimized out>) at swrast.c:97
  #6  0xb54a24f6 in drisw_bind_tex_image (dpy=<optimized out>, drawable=<optimized out>, buffer=<optimized out>, attrib_list=<optimized out>) at drisw_glx.c:319
  #7  0xb5489ff4 in __glXBindTexImageEXT (dpy=<optimized out>, drawable=<optimized out>, buffer=<optimized out>, attrib_list=<optimized out>) at glxcmds.c:2429
  #8  0xb65ede5c in bind () at /home/ebalint/Work/armhf/servo-arm3/servo/src/support/layers/rust-layers/texturegl.rs:146
  #9  layers::platform::linux::surface::NativeSurfaceMethods$NativeSurface::bind_to_texture ()

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