NEW 232321
[ Windows EWS ] imported/mozilla/svg/viewBox-and-pattern-03.svg is a flaky crash in computeSHA1HashStringForBitmapContext 
https://bugs.webkit.org/show_bug.cgi?id=232321
Summary [ Windows EWS ] imported/mozilla/svg/viewBox-and-pattern-03.svg is a flaky cr...
Eric Hutchison
Reported 2021-10-26 11:15:41 PDT
Created attachment 442510 [details] Crash Log imported/mozilla/svg/viewBox-and-pattern-03.svg is a flaky crash on Windows EWS History: https://results.webkit.org/?suite=layout-tests&test=imported%2Fmozilla%2Fsvg%2FviewBox-and-pattern-03.svg&platform=win Build: https://ews-build.webkit.org/#/builders/10/builds/111462 Results: https://ews-build.s3-us-west-2.amazonaws.com/Windows-EWS/r442490-111462-rerun/results.html Crash Log (attached): https://ews-build.s3-us-west-2.amazonaws.com/Windows-EWS/r442490-111462-rerun/imported/mozilla/svg/viewBox-and-pattern-03-crash-log.txt ******************************************************************************* * * * Exception Analysis * * * ******************************************************************************* *** WARNING: Unable to verify checksum for C:\cygwin\home\buildbot\worker\Windows-EWS\build\WebKitBuild\Release\bin64\WebKit.dll *** WARNING: Unable to verify checksum for C:\cygwin\home\buildbot\worker\Windows-EWS\build\WebKitBuild\Release\bin64\WTF.dll *** WARNING: Unable to verify checksum for C:\cygwin\home\buildbot\worker\Windows-EWS\build\WebKitBuild\Release\bin64\DumpRenderTree.exe *** ERROR: Symbol file could not be found. Defaulted to export symbols for C:\Program Files\Common Files\Apple\Apple Application Support\CoreFoundation.dll - *** ERROR: Symbol file could not be found. Defaulted to export symbols for C:\Program Files\Common Files\Apple\Apple Application Support\CFNetwork.dll - *** ERROR: Symbol file could not be found. Defaulted to export symbols for C:\Program Files\Common Files\Apple\Apple Application Support\pthreadVC2.dll - *** ERROR: Symbol file could not be found. Defaulted to export symbols for C:\Program Files\Common Files\Apple\Apple Application Support\libdispatch.dll - *** WARNING: Unable to verify checksum for C:\cygwin\home\buildbot\worker\Windows-EWS\build\WebKitBuild\Release\bin64\JavaScriptCore.dll KEY_VALUES_STRING: 1 STACKHASH_ANALYSIS: 1 TIMELINE_ANALYSIS: 1 Timeline: !analyze.Start Name: <blank> Time: 2021-10-26T16:25:45.489Z Diff: 510 mSec Timeline: Dump.Current Name: <blank> Time: 2021-10-26T16:25:46.0Z Diff: 0 mSec Timeline: Process.Start Name: <blank> Time: 2021-10-26T16:21:05.0Z Diff: 281000 mSec Timeline: OS.Boot Name: <blank> Time: 2021-10-20T00:41:16.0Z Diff: 575070000 mSec DUMP_CLASS: 2 DUMP_QUALIFIER: 0 FAULTING_IP: DumpRenderTreeLib!computeSHA1HashStringForBitmapContext+2b [C:\cygwin\home\buildbot\worker\Windows-EWS\build\Tools\DumpRenderTree\cg\PixelDumpSupportCG.cpp @ 75] 00007ff8`f6bb1ecb 488b5910 mov rbx,qword ptr [rcx+10h] EXCEPTION_RECORD: (.exr -1) .exr -1 ExceptionAddress: 00007ff8f6bb1ecb (DumpRenderTreeLib!computeSHA1HashStringForBitmapContext+0x000000000000002b) ExceptionCode: c0000005 (Access violation) ExceptionFlags: 00000000 NumberParameters: 2 Parameter[0]: 0000000000000000 Parameter[1]: 0000000000000010 Attempt to read from address 0000000000000010 FAULTING_THREAD: 00001d10 DEFAULT_BUCKET_ID: NULL_CLASS_PTR_READ FOLLOWUP_IP: DumpRenderTreeLib!computeSHA1HashStringForBitmapContext+2b [C:\cygwin\home\buildbot\worker\Windows-EWS\build\Tools\DumpRenderTree\cg\PixelDumpSupportCG.cpp @ 75] 00007ff8`f6bb1ecb 488b5910 mov rbx,qword ptr [rcx+10h] READ_ADDRESS: 0000000000000010 ERROR_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%p referenced memory at 0x%p. The memory could not be %s. EXCEPTION_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%p referenced memory at 0x%p. The memory could not be %s. EXCEPTION_CODE_STR: c0000005 EXCEPTION_PARAMETER1: 0000000000000000 EXCEPTION_PARAMETER2: 0000000000000010 I don't have a platform to attempt local reproduction.
Attachments
Crash Log (250.76 KB, text/plain)
2021-10-26 11:15 PDT, Eric Hutchison 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Radar WebKit Bug Importer
Comment 1 2021-10-26 11:17:04 PDT
<rdar://problem/84672226>
Eric Hutchison
Comment 2 2021-10-26 11:19:59 PDT
Updated test expectations at https://trac.webkit.org/changeset/284882/webkit
Alexey Proskuryakov
Comment 3 2021-10-28 10:32:33 PDT
> History: https://results.webkit.org/?suite=layout-tests&test=imported%2Fmozilla%2Fsvg%2FviewBox-and-pattern-03.svg&platform=win So looks like this only happens on EWS on this test.
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