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<base href="https://bugs.freedesktop.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - NIR segfaults after spirv-opt"
href="https://bugs.freedesktop.org/show_bug.cgi?id=107275">107275</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>NIR segfaults after spirv-opt
</td>
</tr>
<tr>
<th>Product</th>
<td>Mesa
</td>
</tr>
<tr>
<th>Version</th>
<td>git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>Drivers/Vulkan/Common
</td>
</tr>
<tr>
<th>Assignee</th>
<td>mesa-dev@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>maister@archlinux.us
</td>
</tr>
<tr>
<th>CC</th>
<td>airlied@freedesktop.org, chadversary@chromium.org, daniel@fooishbar.org, jason@jlekstrand.net
</td>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=140687" name="attach_140687" title="Repro dump">attachment 140687</a> <a href="attachment.cgi?id=140687&action=edit" title="Repro dump">[details]</a></span>
Repro dump
I get a segfault when trying to compile a compute SPIR-V with a particular
pattern.
Repro:
git clone git://github.com/Themaister/Fossilize
cd Fossilize
git submodule update --init
mkdir build
cd build
cmake ..
make -j8
./cli/fossilize-replay fossilize.json
# Disasm
./cli/fossilize-disasm /tmp/fossilize.json --compute-pipeline 2 --target glsl
./cli/fossilize-disasm /tmp/fossilize.json --compute-pipeline 2 --target asm
Backtrace:
Fossilize INFO: Creating render pass #0
Fossilize INFO: ... Succeeded!
Fossilize INFO: Creating compute pipeline #0
Fossilize INFO: ... Succeeded!
Fossilize INFO: Creating compute pipeline #1
Fossilize INFO: ... Succeeded!
Fossilize INFO: Creating compute pipeline #2
Thread 1 "fossilize-repla" received signal SIGSEGV, Segmentation fault.
0x00007ffff66ed5e0 in exec_node_insert_after (n=0x555556a6eb10,
after=0x555556a531d0) at ../../src/compiler/glsl/list.h:164
164 n->next->prev = after;
(gdb) bt
#0 0x00007ffff66ed5e0 in exec_node_insert_after (n=0x555556a6eb10,
after=0x555556a531d0) at ../../src/compiler/glsl/list.h:164
#1 0x00007ffff66ee77a in split_block_end (block=0x555556a6eb10) at
nir/nir_control_flow.c:340
#2 0x00007ffff66ee8ca in split_block_cursor (cursor=...,
_before=0x7fffffffd158, _after=0x7fffffffd160) at nir/nir_control_flow.c:392
#3 0x00007ffff66ef39b in nir_cf_reinsert (cf_list=0x7fffffffd270, cursor=...)
at nir/nir_control_flow.c:716
#4 0x00007ffff67219e6 in opt_peel_loop_initial_if (loop=0x5555569dbe60) at
nir/nir_opt_if.c:198
#5 0x00007ffff672207d in opt_if_cf_list (b=0x7fffffffd330,
cf_list=0x5555569890f8) at nir/nir_opt_if.c:372
#6 0x00007ffff6722121 in nir_opt_if (shader=0x5555569d29a0) at
nir/nir_opt_if.c:396
#7 0x00007ffff666857b in radv_optimize_nir (shader=0x5555569d29a0,
optimize_conservatively=false) at radv_shader.c:143
#8 0x00007ffff666a250 in radv_shader_compile_to_nir (device=0x555555a4c940,
module=0x555556a68860, entrypoint_name=0x555556ab7ad0 "main",
stage=MESA_SHADER_COMPUTE, spec_info=0x0, flags=0) at radv_shader.c:318
#9 0x00007ffff6660e9d in radv_create_shaders (pipeline=0x5555569f60a0,
device=0x555555a4c940, cache=0x0, key=..., pStages=0x7fffffffde80, flags=0)
at radv_pipeline.c:2025
#10 0x00007ffff6665160 in radv_compute_pipeline_create (_device=0x555555a4c940,
_cache=0x0, pCreateInfo=0x555556ab7a50, pAllocator=0x0,
pPipeline=0x55555686de20) at radv_pipeline.c:3639
#11 0x00007ffff66652e5 in radv_CreateComputePipelines (_device=0x555555a4c940,
pipelineCache=0x0, count=1, pCreateInfos=0x555556ab7a50, pAllocator=0x0,
pPipelines=0x55555686de20) at radv_pipeline.c:3669
#12 0x0000555555557f0d in
DumbReplayer::enqueue_create_compute_pipeline(unsigned long, unsigned int,
VkComputePipelineCreateInfo const*, VkPipeline_T**) ()
#13 0x0000555555564cfb in
Fossilize::StateReplayer::Impl::parse_compute_pipelines(Fossilize::StateCreatorInterface&,
rapidjson::GenericValue<rapidjson::UTF8<char>,
rapidjson::MemoryPoolAllocator<rapidjson::CrtAllocator> > const&) ()
#14 0x0000555555573452 in
Fossilize::StateReplayer::Impl::parse(Fossilize::StateCreatorInterface&, void
const*, unsigned long) ()
#15 0x0000555555556530 in main ()</pre>
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