Bug 57166 - [GM45] Chrome experiment "Stars" crash: brw_fs_emit.cpp:708: brw_reg brw_reg_from_fs_reg(fs_reg*): Assertion „!"not reached"“ failed.
Summary: [GM45] Chrome experiment "Stars" crash: brw_fs_emit.cpp:708: brw_reg brw_reg_...
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/DRI/i965 (show other bugs)
Version: git
Hardware: Other All
: medium normal
Assignee: Eric Anholt
QA Contact:
URL: http://workshop.chromeexperiments.com...
Depends on:
Reported: 2012-11-15 18:46 UTC by Pavel Ondračka
Modified: 2012-11-30 06:48 UTC (History)
0 users

See Also:
i915 platform:
i915 features:


Description Pavel Ondračka 2012-11-15 18:46:28 UTC
Open this url in firefox: http://workshop.chromeexperiments.com/stars/

firefox: brw_fs_emit.cpp:708: brw_reg brw_reg_from_fs_reg(fs_reg*): Předpoklad „!"not reached"“ nesplněn.

Program received signal SIGABRT, Aborted.
0x0000003843035925 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
64	  return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);
(gdb) bt
#0  0x0000003843035925 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#1  0x00000038430370d8 in __GI_abort () at abort.c:91
#2  0x000000384302e6a2 in __assert_fail_base (fmt=0x7ffff7eca6d4 "%s%s%s:%u: %s%sPředpoklad „%s“ nesplněn.\n%n", assertion=assertion@entry=
    0x7fffd42c199d "!\"not reached\"", file=file@entry=0x7fffd42c3912 "brw_fs_emit.cpp", line=line@entry=708, function=function@entry=
    0x7fffd42c4180 "brw_reg brw_reg_from_fs_reg(fs_reg*)") at assert.c:94
#3  0x000000384302e752 in __GI___assert_fail (assertion=0x7fffd42c199d "!\"not reached\"", file=0x7fffd42c3912 "brw_fs_emit.cpp", line=708, function=
    0x7fffd42c4180 "brw_reg brw_reg_from_fs_reg(fs_reg*)") at assert.c:103
#4  0x00007fffd425b86f in brw_reg_from_fs_reg (reg=reg@entry=0x7fffdfd6a8ec) at brw_fs_emit.cpp:708
#5  0x00007fffd425dade in fs_visitor::generate_code (this=0x7ffffffb67c0) at brw_fs_emit.cpp:803
#6  0x00007fffd4259016 in fs_visitor::run (this=this@entry=0x7ffffffb67c0) at brw_fs.cpp:1963
#7  0x00007fffd42591ff in brw_wm_fs_emit (brw=brw@entry=0x7fffdbda1030, c=c@entry=0x7fffd7602a10, prog=prog@entry=0x7fffd6f547b0) at brw_fs.cpp:2014
#8  0x00007fffd42a18ed in do_wm_prog (brw=0x7fffdbda1030, prog=0x7fffd6f547b0, fp=0x7fffdfd42000, key=<optimized out>) at brw_wm.c:251
#9  0x00007fffd425960c in brw_fs_precompile (ctx=0x7fffdbda1030, prog=0x68a) at brw_fs.cpp:2128
#10 0x00007fffd427eb05 in brw_shader_precompile (prog=0x7fffd6f547b0, ctx=0x7fffdbda1030) at brw_shader.cpp:70
#11 brw_link_shader (ctx=0x7fffdbda1030, shProg=0x7fffd6f547b0) at brw_shader.cpp:230
#12 0x00007fffd3e8f842 in _mesa_glsl_link_shader (ctx=ctx@entry=0x7fffdbda1030, prog=prog@entry=0x7fffd6f547b0)
    at ../../../src/mesa/program/ir_to_mesa.cpp:3159
#13 0x00007fffd3d4e89a in link_program (ctx=0x7fffdbda1030, program=<optimized out>) at ../../../src/mesa/main/shaderapi.c:758
#14 0x0000003e4279e9ed in ?? () from /usr/lib64/xulrunner/libxul.so
#15 0x0000003e4279ebda in ?? () from /usr/lib64/xulrunner/libxul.so
#16 0x0000003e42e3e3ec in ?? () from /usr/lib64/xulrunner/libxul.so
#17 0x0000003e3fac580c in ?? () from /usr/lib64/xulrunner/libmozjs.so
#18 0x0000003e3fab6e6d in ?? () from /usr/lib64/xulrunner/libmozjs.so
#19 0x0000003e3fca8f4c in ?? () from /usr/lib64/xulrunner/libmozjs.so
#20 0x0000003e3fcab5c4 in ?? () from /usr/lib64/xulrunner/libmozjs.so
#21 0x0000003e3fc9799a in ?? () from /usr/lib64/xulrunner/libmozjs.so
#22 0x0000003e3fc97b83 in ?? () from /usr/lib64/xulrunner/libmozjs.so
#23 0x00007fffc0ef55b2 in ?? ()
#24 0x00007fffc0ef57be in ?? ()
#25 0x0000000000000112 in ?? ()
#26 0x0000000000000000 in ?? ()

Mesa: 35e28b4583fdb206dc6b2dd49412362dc6a51953
Kernel: 3.6.6-1.fc17.x86_64
Libdrm: 7d42b49c0cf19dbb4531cd84efae51f95db2eea1
xf86-video-intel: f4c32af48b0c92a48131090886a6a6b6c45dbe34 (sna)
Firefox: 16.0.2
Comment 1 Eric Anholt 2012-11-20 06:56:41 UTC
Reproduced on my GM45.
Comment 2 Eric Anholt 2012-11-30 06:48:17 UTC
commit b9b033d8e456228fb05c5e28f85323de40f3292f
Author: Eric Anholt <eric@anholt.net>
Date:   Mon Nov 26 14:22:12 2012 -0800

    i965/fs: Don't generate saturates over existing variable values.

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