[Bug 72893] New: [i965] OUT_OF_MEMORY error with maximum size mipmapped depth texture

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=72893

          Priority: medium
            Bug ID: 72893
          Assignee: idr at freedesktop.org
           Summary: [i965] OUT_OF_MEMORY error with maximum size mipmapped
                    depth texture
        QA Contact: intel-3d-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: anuj.phogat at gmail.com
          Hardware: Other
            Status: NEW
           Version: git
         Component: Drivers/DRI/i965
           Product: Mesa

Failure is observed in Khronos' OpenGL CTS test depth_texture_mipmap.test on
IVB. I haven't tested on other intel platforms. Test passes on proprietary
linux drivers of NVIDIA and AMD. 

Driver fails to map texture memory for a texture with target= GL_TEXTURE_2D,
width=8192, height=8192, internalformat = {GL_DEPTH_COMPONENT24,
GL_DEPTH_COMPONENT32} and GL_TEXTURE_MIN_FILTER = GL_NEAREST_MIPMAP_LINEAR.

intel_miptree_map_gtt() => drm_intel_gem_bo_map_gtt( ) => drmIoctl() returns -1
strerror(errno) = 0x3e36b7b117 "Argument list too long"
dstMap = 0x0 in store_texsubimage(), which results in error "GL_OUT_OF_MEMORY
in glTexSubImage".

OUT_OF_MEMORY error can be easily reproduced by doing minor modifications to
max-texture-size.c piglit test. I will later attach the patch to make these
changes. 

stacktrace:
#0  map_gtt (bo=0xc3ff90) at intel_bufmgr_gem.c:1249
#1  0x00007ffff6d19bc2 in drm_intel_gem_bo_map_gtt (bo=0xc3ff90) at
intel_bufmgr_gem.c:1288
#2  0x00007ffff66a28a9 in intel_miptree_map_raw (brw=0x7ffff62c1040,
mt=0xc3fce0) at intel_mipmap_tree.c:1713
#3  0x00007ffff66a298e in intel_miptree_map_gtt (brw=0x7ffff62c1040,
mt=0xc3fce0, map=0x8f16f0,    level=0, slice=0) at intel_mipmap_tree.c:1747
#4  0x00007ffff66a4293 in intel_miptree_map_singlesample (brw=0x7ffff62c1040,
mt=0xc3fce0, level=0, slice=0, x=0, y=0, w=8192, h=8192, mode=6,
out_ptr=0x7fffffffd9b0, out_stride=0x7fffffffd9ac)
    at intel_mipmap_tree.c:2286
#5  0x00007ffff66a47cd in intel_miptree_map (brw=0x7ffff62c1040, mt=0xc3fce0,
level=0, slice=0,    x=0, y=0, w=8192, h=8192, mode=6, out_ptr=0x7fffffffd9b0,
out_stride=0x7fffffffd9ac)
    at intel_mipmap_tree.c:2431
#6  0x00007ffff66ab0dc in intel_map_texture_image (ctx=0x7ffff62c1040,
tex_image=0xc4adb0, slice=0, x=0, y=0, w=8192, h=8192, mode=6,
map=0x7fffffffd9b0, stride=0x7fffffffd9ac) at intel_tex.c:222
#7  0x00007ffff648edee in store_texsubimage (ctx=0x7ffff62c1040,
texImage=0xc4adb0, xoffset=0, yoffset=0, zoffset=0, width=8192, height=8192,
depth=1, format=6402, type=5126, 
    pixels=0x7fffb4f68010, packing=0x7ffff62d0230, caller=0x7ffff67aa802
"glTexImage") at main/texstore.c:4015
#8  0x00007ffff648effc in _mesa_store_teximage (ctx=0x7ffff62c1040, dims=2,
texImage=0xc4adb0, format=6402, type=5126, pixels=0x7fffb4f68010,
packing=0x7ffff62d0230) at main/texstore.c:4071
#9  0x00007ffff66abe5c in intelTexImage (ctx=0x7ffff62c1040, dims=2,
texImage=0xc4adb0,    format=6402, type=5126,    pixels=0x7fffb4f68010,
unpack=0x7ffff62d0230) at intel_tex_image.c:198
#10 0x00007ffff647624b in teximage (ctx=0x7ffff62c1040,    compressed=0 '\000',
dims=2, target=3553, level=0, internalFormat=33190, width=8192, height=8192,
depth=1, border=0, format=6402, type=5126, 
    imageSize=0, pixels=0x7fffb4f68010)    at main/teximage.c:3128
#11 0x00007ffff64763e1 in _mesa_TexImage2D (target=3553, level=0,
internalFormat=33190,    width=8192, height=8192, border=0, format=6402,   
type=5126, pixels=0x7fffb4f68010) at main/teximage.c:3167
#12 0x00007ffff7d4f799 in stub_glTexImage2D (target=3553, level=0,
internalformat=33190, width=8192, height=8192, border=0, format=6402,
type=5126, pixels=0x7fffb4f68010)

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