[Webkit-unassigned] [Bug 205707] New: REGRESSION (r253926): Flaky crashes on webgl/1.0.3/conformance/textures/texture-copying-feedback-loops.html and webgl/2.0.0/conformance/textures/misc/texture-copying-feedback-loops.html

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=205707

            Bug ID: 205707
           Summary: REGRESSION (r253926): Flaky crashes on
                    webgl/1.0.3/conformance/textures/texture-copying-feedb
                    ack-loops.html and
                    webgl/2.0.0/conformance/textures/misc/texture-copying-
                    feedback-loops.html
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Keywords: InRadar
          Severity: Normal
          Priority: P2
         Component: WebGL
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ap at webkit.org
                CC: dino at apple.com, kbr at google.com,
                    webkit-bug-importer at group.apple.com

rdar://problem/58227967

conformance/textures/texture-copying-feedback-loops.html started being a flaky crash after switching to ANGLE.

https://results.webkit.org/?suite=layout-tests&test=webgl%2F1.0.3%2Fconformance%2Ftextures%2Ftexture-copying-feedback-loops.html

Exception Type:        EXC_CRASH (SIGABRT)
Exception Codes:       0x0000000000000000, 0x0000000000000000
Exception Note:        EXC_CORPSE_NOTIFY

Application Specific Information:
abort() called

Application Specific Signatures:
Graphics kernel error: 0xfffffffe


Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib              0x00007fff6ab9765a __pthread_kill + 10
1   libsystem_pthread.dylib             0x00007fff6ac53e60 pthread_kill + 430
2   libsystem_c.dylib                   0x00007fff6ab1e808 abort + 120
3   libGPUSupportMercury.dylib          0x00007fff53a380a5 gpusGenerateCrashLog.cold.1 + 95
4   libGPUSupportMercury.dylib          0x00007fff53a2f18f gpusGenerateCrashLog + 89
5   com.apple.driver.AppleIntelKBLGraphicsGLDriver      0x00007fff29795e58 gpusKillClientExt + 9
6   libGPUSupportMercury.dylib          0x00007fff53a3055b gpusSubmitDataBuffers + 164
7   com.apple.driver.AppleIntelKBLGraphicsGLDriver      0x00007fff28a0da36 IntelCommandBuffer::getNew(GLDContextRec*) + 48
8   com.apple.driver.AppleIntelKBLGraphicsGLDriver      0x00007fff28a0d844 intelSubmitCommands + 171

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