http://bugs.freedesktop.org/show_bug.cgi?id=25463
Summary: crash with progs/perf/copytex
Product: Mesa
Version: git
Platform: Other
OS/Version: All
Status: NEW
Severity: normal
Priority: medium
Component: Drivers/DRI/R600
AssignedTo: dri-devel@lists.sourceforge.net
ReportedBy: pierre-bugzi...@ossman.eu
Running the glCopyTexImage test program results in a segfault in the r600
driver. I've had a look at it but I can't figure out how this is supposed to
work in the first place.
Backtrace:
#0 0x00000032bbe326b5 in raise (sig=<value optimized out>) at
../nptl/sysdeps/unix/sysv/linux/raise.c:64
#1 0x00000032bbe33e95 in abort () at abort.c:92
#2 0x00000032bbe2b7a5 in __assert_fail (assertion=0x7ffff7184df5 "src",
file=<value optimized out>, line=54, function=<value optimized out>) at
assert.c:81
#3 0x00007ffff6f24acb in copy_rows (dst=0x7ffff661d000, dststride=256,
src=0x0, srcstride=64, numrows=16, rowsize=64) at radeon_texture.c:54
#4 0x00007ffff6f0fe16 in migrate_image_to_miptree (mt=0xa0bb70,
image=0xa00670, face=0, level=0) at radeon_mipmap_tree.c:466
#5 0x00007ffff6f10493 in radeon_validate_texture_miptree (ctx=0x6783c0,
texObj=0x9e16e0) at radeon_mipmap_tree.c:602
#6 0x00007ffff6f24f53 in radeonMapTexture (ctx=0x6783c0, texObj=0x9e16e0) at
radeon_texture.c:167
#7 0x00007ffff6f2462f in radeonSpanRenderStart (ctx=0x6783c0) at
radeon_span.c:888
#8 0x00007ffff705b431 in swrast_render_start (ctx=0x6783c0) at
swrast/s_context.h:267
#9 0x00007ffff705cc31 in _swrast_ReadPixels (ctx=0x6783c0, x=0, y=0, width=16,
height=16, format=6408, type=5121, packing=0x685da8, pixels=0xa00710) at
swrast/s_readpix.c:579
#10 0x00007ffff70a2777 in copy_tex_image (ctx=0x6783c0, dims=2, target=3553,
level=0, internalFormat=6408, x=0, y=0, width=16, height=16, border=0) at
drivers/common/meta.c:2506
#11 0x00007ffff70a29f1 in _mesa_meta_CopyTexImage2D (ctx=0x6783c0, target=3553,
level=0, internalFormat=6408, x=0, y=0, width=16, height=16, border=0) at
drivers/common/meta.c:2568
#12 0x00007ffff6fc27f5 in _mesa_CopyTexImage2D (target=3553, level=0,
internalFormat=6408, x=0, y=0, width=16, height=16, border=0) at
main/teximage.c:2785
#13 0x0000000000428c41 in CopyTexImage ()
#14 0x0000000000428f67 in PerfMeasureRate ()
#15 0x0000000000428a6e in PerfDraw ()
#16 0x00000000004291c9 in Draw ()
#17 0x00007ffff7dcb1a7 in processWindowWorkList (window=0x65f280) at
glut_event.c:1306
#18 0x00007ffff7dcb2c1 in __glutProcessWindowWorkLists () at glut_event.c:1356
#19 0x00007ffff7dcb337 in glutMainLoop () at glut_event.c:1377
#20 0x00000000004291a2 in main ()
(I added an extra assert in copy_rows which is why the top part is in the
assertion code and not a segfault in memcpy)
The issue is that the radeon code tries to map the target texture and migrate
it to a mipmap tree, but that texture hasn't yet gotten any memory as it is in
the process of being created.
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