[Bug 65016] New: [radeonsi] X server segfaults at startup with mesa-9.1*

[Bug 65016] New: [radeonsi] X server segfaults at startup with mesa-9.1*

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=65016

          Priority: medium
            Bug ID: 65016
          Assignee: dri-devel@lists.freedesktop.org
           Summary: [radeonsi] X server segfaults at startup with
                    mesa-9.1*
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: alexander@tsoy.me
          Hardware: Other
            Status: NEW
           Version: 9.1
         Component: Drivers/Gallium/radeonsi
           Product: Mesa

X server segfaults at startup whith mesa 9.1*. No problems with Git snapshots
of mesa (these are the only versions of mesa which works on my system). I'll
attach two backtraces below:

1. llvm and mesa was compiled with debugging support. Unfortunately this trace
is incomplete =/
2. llvm was compiled without debugging support, mesa was compiled whith
debugging support. This trace is complete, but lacks a lot of debugging info.


Hardware:

01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Cape
Verde PRO [Radeon HD 7750]
        Subsystem: Giga-byte Technology Device 2260
        Kernel driver in use: radeon
        Kernel modules: radeon


Software:
- mesa 9.1.3, also tried earlier minor versions
- llvm 3.3_rc2, llvm Git
- xorg-server-1.13.4
- xf86-video-ati-7.1.0
- glamor Git
- linux 3.8.12

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[Bug 65016] [radeonsi] X server segfaults at startup with mesa-9.1*

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https://bugs.freedesktop.org/show_bug.cgi?id=65016

--- Comment #1 from Alexander Tsoy <alexander@tsoy.me> ---
Created attachment 79818
  --> https://bugs.freedesktop.org/attachment.cgi?id=79818&action=edit
[1] - both llvm and mesa with debugging support

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[Bug 65016] [radeonsi] X server segfaults at startup with mesa-9.1*

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=65016

--- Comment #2 from Alexander Tsoy <alexander@tsoy.me> ---
Created attachment 79819
  --> https://bugs.freedesktop.org/attachment.cgi?id=79819&action=edit
backtrace [2] - only mesa with debugging support

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[Bug 65016] [radeonsi] X server segfaults at startup with mesa-9.1*

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=65016

Alexander Tsoy <alexander@tsoy.me> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #79818|[1] - both llvm and mesa    |backtrace [1] - both llvm
        description|with debugging support      |and mesa with debugging
                   |                            |support

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[Bug 65016] [radeonsi] X server segfaults at startup with mesa-9.1*

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https://bugs.freedesktop.org/show_bug.cgi?id=65016

--- Comment #3 from Michel Dänzer <michel@daenzer.net> ---
(In reply to comment #3)
> - mesa 9.1.3, also tried earlier minor versions
> - llvm 3.3_rc2, llvm Git

The radeonsi driver in Mesa 9.1.y cannot work with LLVM 3.3 or later but
requires a snapshot of the git://people.freedesktop.org/~tstellar/llvm master
branch (based on LLVM 3.2).

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[Bug 65016] [radeonsi] X server segfaults at startup with mesa-9.1*

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https://bugs.freedesktop.org/show_bug.cgi?id=65016

Alexander Tsoy <alexander@tsoy.me> changed:

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

--- Comment #4 from Alexander Tsoy <alexander@tsoy.me> ---
Thanks for the answer. I suspected something like this when saw this in
backstrace:

#2  0x0000039278c97590 in llvm::llvm_unreachable_internal (msg=0x39278d885ea
"Undefined function", file=0x39278d885d5 "AMDGPUISelLowering.h", line=56) at
ErrorHandling.cpp:98

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