[Bug 97917] Talos Principle gives Assertion `!NodePtr->isKnownSentinel()' failed

[Bug 97917] Talos Principle gives Assertion `!NodePtr->isKnownSentinel()' failed

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=97917

            Bug ID: 97917
           Summary: Talos Principle gives Assertion
                    `!NodePtr->isKnownSentinel()' failed
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: vedran@miletic.net
        QA Contact: dri-devel@lists.freedesktop.org

WRN:  CPU Power saving is enabled and performance governor is not used.
INF:  Encoded user ID = f97a7a75:53b8c3e8
INF:  
INF:  * Desktop settings...
INF:  Color depth: 32-bit
INF:  Desktop resolution: 1920 x 1080
INF:  [OpenGL] Detected GLSL 1.30
WRN:  [OpenGL] "GL_ARB_get_program_binary" extension is present but not used
because no binary formats are exposed.
Talos: /home/vedranm/workspace/llvm/include/llvm/ADT/ilist_iterator.h:126:
llvm::ilist_iterator<OptionsT, IsReverse, IsConst>::reference
llvm::ilist_iterator<OptionsT, IsReverse, IsConst>::operator*() const [with
OptionsT = llvm::ilist_detail::node_options<llvm::MachineInstr, true, true,
void>; bool IsReverse = false; bool IsConst = true;
llvm::ilist_iterator<OptionsT, IsReverse, IsConst>::reference = const
llvm::MachineInstr&]: Assertion `!NodePtr->isKnownSentinel()' failed.
INF:  Crash! (Aborted)
DBG:  
DBG:  //=====================================================
DBG:  Report generated at: unsupported unsupported
DBG:  Version: $Version: Talos_PC_distro; Talos_Executables-Linux-Final; 267252
2016-07-28 13:49:22 @builderl01; Linux-x64-Static-Final-Default$
DBG:  Build type: Linux-x64-Static-Final-Default
DBG:  Dump type: Crash
DBG:  
DBG:  Received signal 6 (Aborted).
DBG:  
DBG:  Dumping registers:
DBG:  RAX:0000000000000000
DBG:  RBX:00007FC7698CF000
DBG:  RCX:00007FC76884292F
DBG:  RDX:0000000000000000
DBG:  RSP:00007FC752728C48
DBG:  RBP:00007FC7594FBFAF
DBG:  
DBG:  RSI:00007FC752728BD0
DBG:  RDI:0000000000000002
DBG:  R08:0000000000000000
DBG:  R09:00007FC752728BD0
DBG:  R10:0000000000000008
DBG:  R11:0000000000000246
DBG:  R12:000000000000007E
DBG:  R13:00007FC7594FC980
DBG:  
DBG:  R14:0000000000000001
DBG:  R15:00007FC7340652B0
DBG:  
DBG:  
DBG:  RIP:00007FC76884292F
DBG:  Flags:00000007
DBG:  
DBG:  Dumping stack back trace:
DBG:  00007FC76884292F 00000001 $adr: "/lib64/libc.so.6" 0001:000000000003592F
DBG:  00007FC76884292F 00000001 $adr: "/lib64/libc.so.6" 0001:000000000003592F
DBG:  00007FC76884452A 00000001 $adr: "/lib64/libc.so.6" 0001:000000000003752A
DBG:  00007FC76883AE37 00000001 $adr: "/lib64/libc.so.6" 0001:000000000002DE37
DBG:  00007FC76883AEE2 00000001 $adr: "/lib64/libc.so.6" 0001:000000000002DEE2
DBG:  00007FC7593DFB5D 00000001 $adr:
"/usr/local/lib64/libLLVMAMDGPUCodeGen.so" 0001:0000000000132B5D
DBG:  00007FC7593DF8E4 00000001 $adr:
"/usr/local/lib64/libLLVMAMDGPUCodeGen.so" 0001:00000000001328E4
DBG:  00007FC7594C97C1 00000001 $adr:
"/usr/local/lib64/libLLVMAMDGPUCodeGen.so" 0001:000000000021C7C1
DBG:  00007FC7594CA02F 00000001 $adr:
"/usr/local/lib64/libLLVMAMDGPUCodeGen.so" 0001:000000000021D02F
DBG:  00007FC7594C6778 00000001 $adr:
"/usr/local/lib64/libLLVMAMDGPUCodeGen.so" 0001:0000000000219778
DBG:  00007FC7594CC6C5 00000001 $adr:
"/usr/local/lib64/libLLVMAMDGPUCodeGen.so" 0001:000000000021F6C5
DBG:  00007FC7594CD854 00000001 $adr:
"/usr/local/lib64/libLLVMAMDGPUCodeGen.so" 0001:0000000000220854
DBG:  00007FC7575A0E11 00000001 $adr: "/usr/local/lib64/libLLVMCodeGen.so"
0001:0000000000553E11
DBG:  00007FC7575A01F8 00000001 $adr: "/usr/local/lib64/libLLVMCodeGen.so"
0001:00000000005531F8
DBG:  00007FC7575162E9 00000001 $adr: "/usr/local/lib64/libLLVMCodeGen.so"
0001:00000000004C92E9
DBG:  00007FC754D4BD1F 00000001 $adr: "/usr/local/lib64/libLLVMCore.so"
0001:000000000031ED1F
DBG:  00007FC754D4BE96 00000001 $adr: "/usr/local/lib64/libLLVMCore.so"
0001:000000000031EE96
DBG:  00007FC754D4C1E3 00000001 $adr: "/usr/local/lib64/libLLVMCore.so"
0001:000000000031F1E3
DBG:  00007FC754D4C8B3 00000001 $adr: "/usr/local/lib64/libLLVMCore.so"
0001:000000000031F8B3
DBG:  00007FC754D4CAAB 00000001 $adr: "/usr/local/lib64/libLLVMCore.so"
0001:000000000031FAAB
DBG:  00007FC755F3F0A8 00000001 $adr: "/usr/local/lib64/libLLVMTarget.so"
0001:000000000001A0A8
DBG:  00007FC755F3F2A0 00000001 $adr: "/usr/local/lib64/libLLVMTarget.so"
0001:000000000001A2A0
DBG:  00007FC75A57BAB4 00000001 $adr: "/usr/local/lib64/dri/radeonsi_dri.so"
0001:000000000053EAB4
DBG:  00007FC75A4F39D6 00000001 $adr: "/usr/local/lib64/dri/radeonsi_dri.so"
0001:00000000004B69D6
DBG:  00007FC75A4F586C 00000001 $adr: "/usr/local/lib64/dri/radeonsi_dri.so"
0001:00000000004B886C
DBG:  00007FC75A50200B 00000001 $adr: "/usr/local/lib64/dri/radeonsi_dri.so"
0001:00000000004C500B
DBG:  00007FC75A3DF114 00000001 $adr: "/usr/local/lib64/dri/radeonsi_dri.so"
0001:00000000003A2114
DBG:  00007FC75A3DEF07 00000001 $adr: "/usr/local/lib64/dri/radeonsi_dri.so"
0001:00000000003A1F07
DBG:  00007FC7690F46CA 00000001 $adr: "/lib64/libpthread.so.0"
0001:00000000000076CA
DBG:  00007FC768914F6F 00000001 $adr: "/lib64/libc.so.6" 0001:0000000000107F6F
DBG:  00007FC7690F46CA 00000001 $adr: "/lib64/libpthread.so.0"
0001:00000000000076CA
DBG:  
DBG:  //=====================================================
DBG:  
DBG:

Will bisect.

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[Bug 97917] Talos Principle gives Assertion `!NodePtr->isKnownSentinel()' failed

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 1840 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=97917

Vedran Miletić <vedran@miletic.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |77449
           Keywords|                            |regression

--- Comment #1 from Vedran Miletić <vedran@miletic.net> ---
6037e199c8a061b2e9cb22c434644a0eac659fb9 is the first bad commit
commit 6037e199c8a061b2e9cb22c434644a0eac659fb9
Author: Duncan P. N. Exon Smith <dexonsmith@apple.com>
Date:   Sun Sep 11 16:38:18 2016 +0000

    CodeGen: Turn on sentinel tracking for MachineInstr iterators

    This is a prep commit before fixing MachineBasicBlock::reverse_iterator
    invalidation semantics, ala r281167 for ilist::reverse_iterator.  This
    changes MachineBasicBlock::Instructions to track which node is the
    sentinel regardless of LLVM_ENABLE_ABI_BREAKING_CHECKS.

    There's almost no functionality change (aside from ABI).  However, in
    the rare configuration:

        #if !defined(NDEBUG) && !defined(LLVM_ENABLE_ABI_BREAKING_CHECKS)

    the isKnownSentinel() assertions in ilist_iterator<>::operator* suddenly
    have teeth for MachineInstr.  If these assertions start firing for your
    out-of-tree backend, have a look at the suggestions in the commit
    message for r279314, and at some of the commits leading up to it that
    avoid dereferencing the end() iterator.

    git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@281168
91177308-0d34-0410-b5e6-96231b3b80d8


Referenced Bugs:

https://bugs.freedesktop.org/show_bug.cgi?id=77449
[Bug 77449] Tracker bug for all bugs related to Steam titles
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[Bug 97917] Talos Principle gives Assertion `!NodePtr->isKnownSentinel()' failed

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 460 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=97917

Vedran Miletić <vedran@miletic.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|                            |https://llvm.org/bugs/show_
                   |                            |bug.cgi?id=30514

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[Bug 97917] Talos Principle gives Assertion `!NodePtr->isKnownSentinel()' failed

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 374 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=97917

Vedran Miletić <vedran@miletic.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |bisected

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[Bug 97917] Talos Principle gives Assertion `!NodePtr->isKnownSentinel()' failed

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https://bugs.freedesktop.org/show_bug.cgi?id=97917

--- Comment #2 from Nicolai Hähnle <nhaehnle@gmail.com> ---
Hi Vedran, please provide the output with R600_DEBUG=vs,tcs,tes,gs,ps,cs. From
there, it should be possible to extract the crashing shader.

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[Bug 97917] Talos Principle gives Assertion `!NodePtr->isKnownSentinel()' failed

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=97917

--- Comment #3 from Vedran Miletić <vedran@miletic.net> ---
Created attachment 126816
  --> https://bugs.freedesktop.org/attachment.cgi?id=126816&action=edit
Dump with R600_DEBUG=vs,tcs,tes,gs,ps,cs,sisched

Interesting, doesn't crash without sisched. With
R600_DEBUG=vs,tcs,tes,gs,ps,cs,sisched I get the following.

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[Bug 97917] Enabling sisched gives Assertion `!NodePtr->isKnownSentinel()' failed

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https://bugs.freedesktop.org/show_bug.cgi?id=97917

Vedran Miletić <vedran@miletic.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Talos Principle gives       |Enabling sisched gives
                   |Assertion                   |Assertion
                   |`!NodePtr->isKnownSentinel( |`!NodePtr->isKnownSentinel(
                   |)' failed                   |)' failed
             Blocks|77449                       |

--- Comment #4 from Vedran Miletić <vedran@miletic.net> ---
Reproducible with glxgears, not Talos-specific.


Referenced Bugs:

https://bugs.freedesktop.org/show_bug.cgi?id=77449
[Bug 77449] Tracker bug for all bugs related to Steam titles
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[Bug 97917] Enabling sisched gives Assertion `!NodePtr->isKnownSentinel()' failed

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=97917

--- Comment #5 from Nicolai Hähnle <nhaehnle@gmail.com> ---
I suspect sisched needs to be updated for recent changes in LLVM to the control
flow lowering. Trying to ping Axel Davy...

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[Bug 97917] Enabling sisched gives Assertion `!NodePtr->isKnownSentinel()' failed

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=97917

Vedran Miletić <vedran@miletic.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #6 from Vedran Miletić <vedran@miletic.net> ---
Fixed by https://reviews.llvm.org/D27844 LLVM r290347

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