[Bug 70913] New: [PIGLIT,radeonsi] crash in "spec/EXT_framebuffer_multisample/sample-alpha-to-coverage 4 depth" (buffer overflow)

[Bug 70913] New: [PIGLIT,radeonsi] crash in "spec/EXT_framebuffer_multisample/sample-alpha-to-coverage 4 depth" (buffer overflow)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=70913

          Priority: medium
            Bug ID: 70913
          Assignee: dri-devel@lists.freedesktop.org
           Summary: [PIGLIT,radeonsi] crash in
                    "spec/EXT_framebuffer_multisample/sample-alpha-to-cove
                    rage 4 depth" (buffer overflow)
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: kai@dev.carbon-project.org
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Drivers/Gallium/radeonsi
           Product: Mesa

Created attachment 88177
  --> https://bugs.freedesktop.org/attachment.cgi?id=88177&action=edit
Full GDB backtrace of crash/buffer overflow

While running Piglit on radeonsi (full graphics stack detailed below) I
encountered an crash in
"spec/EXT_framebuffer_multisample/sample-alpha-to-coverage 4 depth". See the
attached GDB backtrace and register dump for more details.

Stack:
GPU: "PITCAIRN" (ChipID = 0x6819)
Linux: 3.11.6
libdrm: 2.4.47
LLVM: SVN:trunk/r193475
libclc: Git:master/4c18120c1a
Mesa: Git:master/64c081e8b7
GLAMOR: Git:master/ba209eeef2
DDX: Git:master/f1dc677e79

Let me know if you need further information.

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[Bug 70913] [PIGLIT,radeonsi] crash in "spec/EXT_framebuffer_multisample/sample-alpha-to-coverage 4 depth" (buffer overflow)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=70913

--- Comment #1 from Kai <kai@dev.carbon-project.org> ---
*** Bug 70916 has been marked as a duplicate of this bug. ***

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[Bug 70913] [PIGLIT,radeonsi] crash in "spec/EXT_framebuffer_multisample/sample-alpha-to-coverage 4 depth" (buffer overflow)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=70913

--- Comment #2 from Kai <kai@dev.carbon-project.org> ---
Created attachment 88190
  --> https://bugs.freedesktop.org/attachment.cgi?id=88190&action=edit
Patch to address this bug.

I've sent the attached patch to mesa-dev as well, please review/commit.

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[Bug 70913] [PIGLIT,radeonsi] crash in "spec/EXT_framebuffer_multisample/sample-alpha-to-coverage 4 depth" (buffer overflow)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=70913

Kai <kai@dev.carbon-project.org> changed:

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

--- Comment #3 from Kai <kai@dev.carbon-project.org> ---
Fixed by
http://cgit.freedesktop.org/mesa/mesa/commit/?id=bbb77fc2f19ed37f0ef9243b11bb4f74d9ca677c

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