Bug 41585 – Reproducible crash with Optimize Legibility extension

• Status: RESOLVED
• Resolution: FIXED
• Component: CSS

Install Extension: http://cmorrell.com/misc/optimize-legibility-safari-5-810
Go to: http://www.ruby-forum.com

Crash:

Process:         Safari [3246]
Path:            /Applications/Safari.app/Contents/MacOS/Safari
Identifier:      org.webkit.nightly.WebKit
Version:         r62241 (62241)
Code Type:       X86-64 (Native)
Parent Process:  launchd [1817]

Date/Time:       2010-07-04 22:30:18.575 +0200
OS Version:      Mac OS X 10.6.4 (10F569)
Report Version:  6

Interval Since Last Report:          18330 sec
Crashes Since Last Report:           4
Per-App Interval Since Last Report:  7 sec
Per-App Crashes Since Last Report:   1
Anonymous UUID:                      9331DC45-4FCF-41D6-A1FB-D1C48A08064D

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000050
Crashed Thread:  0  Dispatch queue: com.apple.main-thread

Thread 0 Crashed:  Dispatch queue: com.apple.main-thread
0   com.apple.WebCore             	0x0000000100d21aa8 WebCore::CSSPrimitiveValue::computeLengthDouble(WebCore::RenderStyle*, WebCore::RenderStyle*, double, bool) + 376
1   com.apple.WebCore             	0x0000000100d21bdb WebCore::CSSPrimitiveValue::computeLengthIntForLength(WebCore::RenderStyle*, WebCore::RenderStyle*, double) + 11
2   com.apple.WebCore             	0x0000000100d44302 WebCore::CSSStyleSelector::applyProperty(int, WebCore::CSSValue*) + 35218
3   com.apple.WebCore             	0x0000000100d6194b void WebCore::CSSStyleSelector::applyDeclarations<false>(bool, int, int) + 171
4   com.apple.WebCore             	0x0000000100d5b8a4 WebCore::CSSStyleSelector::styleForElement(WebCore::Element*, WebCore::RenderStyle*, bool, bool, bool) + 2644
5   com.apple.WebCore             	0x00000001014274c2 WebCore::Node::styleForRenderer() + 82
6   com.apple.WebCore             	0x000000010142991f WebCore::Node::createRendererIfNeeded() + 143
7   com.apple.WebCore             	0x0000000100e80390 WebCore::Element::attach() + 32
8   com.apple.WebCore             	0x00000001013e0a55 WebCore::LegacyHTMLTreeBuilder::insertNode(WebCore::Node*, bool) + 325
9   com.apple.WebCore             	0x00000001013e1774 WebCore::LegacyHTMLTreeBuilder::parseToken(WebCore::Token*) + 868
10  com.apple.WebCore             	0x0000000100fb2ba7 WebCore::HTMLTreeBuilder::passTokenToLegacyParser(WebCore::HTMLToken&) + 167
11  com.apple.WebCore             	0x0000000100fb33d2 WebCore::HTMLTreeBuilder::constructTreeFromToken(WebCore::HTMLToken&) + 34
12  com.apple.WebCore             	0x0000000100f474da WebCore::HTMLDocumentParser::pumpTokenizer(WebCore::HTMLDocumentParser::SynchronousMode) + 138
13  com.apple.WebCore             	0x0000000100f47a33 WebCore::HTMLDocumentParser::resumeParsingAfterScriptExecution() + 19
14  com.apple.WebCore             	0x0000000100c9a52c WebCore::CachedScript::checkNotify() + 76
15  com.apple.WebCore             	0x00000001013eead6 WebCore::Loader::Host::didFinishLoading(WebCore::SubresourceLoader*) + 358
16  com.apple.WebCore             	0x00000001015e5a51 WebCore::SubresourceLoader::didFinishLoading() + 49
17  com.apple.Foundation          	0x00007fff87a02b6c _NSURLConnectionDidFinishLoading + 113
18  com.apple.CFNetwork           	0x00007fff8257906e URLConnectionClient::_clientDidFinishLoading(URLConnectionClient::ClientConnectionEventQueue*) + 174
19  com.apple.CFNetwork           	0x00007fff825de3e2 URLConnectionClient::ClientConnectionEventQueue::processAllEventsAndConsumePayload(XConnectionEventInfo<XClientEvent, XClientEventParams>*, long) + 254
20  com.apple.CFNetwork           	0x00007fff8256579f URLConnectionClient::processEvents() + 121
21  com.apple.CFNetwork           	0x00007fff8256557c MultiplexerSource::perform() + 160
22  com.apple.CoreFoundation      	0x00007fff84ae3e91 __CFRunLoopDoSources0 + 1361
23  com.apple.CoreFoundation      	0x00007fff84ae2089 __CFRunLoopRun + 873
24  com.apple.CoreFoundation      	0x00007fff84ae184f CFRunLoopRunSpecific + 575
25  com.apple.HIToolbox           	0x00007fff861e891a RunCurrentEventLoopInMode + 333
26  com.apple.HIToolbox           	0x00007fff861e871f ReceiveNextEventCommon + 310
27  com.apple.HIToolbox           	0x00007fff861e85d8 BlockUntilNextEventMatchingListInMode + 59
28  com.apple.AppKit              	0x00007fff84c7b29e _DPSNextEvent + 708
29  com.apple.AppKit              	0x00007fff84c7abed -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 155
30  com.apple.Safari              	0x0000000100015c96 0x100000000 + 89238
31  com.apple.AppKit              	0x00007fff84c408d3 -[NSApplication run] + 395
32  com.apple.AppKit              	0x00007fff84c395f8 NSApplicationMain + 364
33  com.apple.Safari              	0x0000000100009b18 0x100000000 + 39704

Thread 1:  Dispatch queue: com.apple.libdispatch-manager
0   libSystem.B.dylib             	0x00007fff86fc408a kevent + 10
1   libSystem.B.dylib             	0x00007fff86fc5f5d _dispatch_mgr_invoke + 154
2   libSystem.B.dylib             	0x00007fff86fc5c34 _dispatch_queue_invoke + 185
3   libSystem.B.dylib             	0x00007fff86fc575e _dispatch_worker_thread2 + 252
4   libSystem.B.dylib             	0x00007fff86fc5088 _pthread_wqthread + 353
5   libSystem.B.dylib             	0x00007fff86fc4f25 start_wqthread + 13

Thread 2:
0   libSystem.B.dylib             	0x00007fff86fc4eaa __workq_kernreturn + 10
1   libSystem.B.dylib             	0x00007fff86fc52bc _pthread_wqthread + 917
2   libSystem.B.dylib             	0x00007fff86fc4f25 start_wqthread + 13

Thread 3:  WebCore: IconDatabase
0   libSystem.B.dylib             	0x00007fff86fe5eb6 __semwait_signal + 10
1   libSystem.B.dylib             	0x00007fff86fe9cd1 _pthread_cond_wait + 1286
2   com.apple.WebCore             	0x0000000100fc1cd9 WebCore::IconDatabase::syncThreadMainLoop() + 249
3   com.apple.WebCore             	0x0000000100fc1e0c WebCore::IconDatabase::iconDatabaseSyncThread() + 172
4   libSystem.B.dylib             	0x00007fff86fe4456 _pthread_start + 331
5   libSystem.B.dylib             	0x00007fff86fe4309 thread_start + 13

Thread 4:  Safari: CertRevocationChecker
0   libSystem.B.dylib             	0x00007fff86fab2fa mach_msg_trap + 10
1   libSystem.B.dylib             	0x00007fff86fab96d mach_msg + 59
2   com.apple.CoreFoundation      	0x00007fff84ae23c2 __CFRunLoopRun + 1698
3   com.apple.CoreFoundation      	0x00007fff84ae184f CFRunLoopRunSpecific + 575
4   com.apple.Safari              	0x000000010002f0f5 0x100000000 + 192757
5   com.apple.Safari              	0x000000010002f085 0x100000000 + 192645
6   libSystem.B.dylib             	0x00007fff86fe4456 _pthread_start + 331
7   libSystem.B.dylib             	0x00007fff86fe4309 thread_start + 13

Thread 5:
0   libSystem.B.dylib             	0x00007fff86fab2fa mach_msg_trap + 10
1   libSystem.B.dylib             	0x00007fff86fab96d mach_msg + 59
2   com.apple.CoreFoundation      	0x00007fff84ae23c2 __CFRunLoopRun + 1698
3   com.apple.CoreFoundation      	0x00007fff84ae184f CFRunLoopRunSpecific + 575
4   com.apple.Foundation          	0x00007fff87a014c3 +[NSURLConnection(NSURLConnectionReallyInternal) _resourceLoadLoop:] + 297
5   com.apple.Foundation          	0x00007fff87981e8d __NSThread__main__ + 1429
6   libSystem.B.dylib             	0x00007fff86fe4456 _pthread_start + 331
7   libSystem.B.dylib             	0x00007fff86fe4309 thread_start + 13

Thread 6:  Safari: SafeBrowsingManager
0   libSystem.B.dylib             	0x00007fff86fab2fa mach_msg_trap + 10
1   libSystem.B.dylib             	0x00007fff86fab96d mach_msg + 59
2   com.apple.CoreFoundation      	0x00007fff84ae23c2 __CFRunLoopRun + 1698
3   com.apple.CoreFoundation      	0x00007fff84ae184f CFRunLoopRunSpecific + 575
4   com.apple.Safari              	0x000000010002f0f5 0x100000000 + 192757
5   com.apple.Safari              	0x000000010002f085 0x100000000 + 192645
6   libSystem.B.dylib             	0x00007fff86fe4456 _pthread_start + 331
7   libSystem.B.dylib             	0x00007fff86fe4309 thread_start + 13

Thread 7:
0   libSystem.B.dylib             	0x00007fff86feedce select$DARWIN_EXTSN + 10
1   com.apple.CoreFoundation      	0x00007fff84b03e92 __CFSocketManager + 818
2   libSystem.B.dylib             	0x00007fff86fe4456 _pthread_start + 331
3   libSystem.B.dylib             	0x00007fff86fe4309 thread_start + 13

Thread 8:  Safari: SnapshotStore
0   libSystem.B.dylib             	0x00007fff86fe5eb6 __semwait_signal + 10
1   libSystem.B.dylib             	0x00007fff86fe9cd1 _pthread_cond_wait + 1286
2   com.apple.JavaScriptCore      	0x00000001008cec30 WTF::ThreadCondition::timedWait(WTF::Mutex&, double) + 64
3   com.apple.Safari              	0x00000001001bd455 0x100000000 + 1823829
4   com.apple.Safari              	0x0000000100046aeb 0x100000000 + 289515
5   com.apple.Safari              	0x0000000100046969 0x100000000 + 289129
6   libSystem.B.dylib             	0x00007fff86fe4456 _pthread_start + 331
7   libSystem.B.dylib             	0x00007fff86fe4309 thread_start + 13

Thread 0 crashed with X86 Thread State (64-bit):
  rax: 0x0000000000000004  rbx: 0x0000000115462e28  rcx: 0x0000000000000000  rdx: 0x00000001181a3410
  rdi: 0x0000000115462e28  rsi: 0x0000000117f443c0  rbp: 0x00007fff5fbfc8f0  rsp: 0x00007fff5fbfc8d0
   r8: 0x0000000115462e28   r9: 0x0000000000000070  r10: 0x0000000051237d87  r11: 0x000000000000003f
  r12: 0x0000000000000000  r13: 0x0000000000000000  r14: 0x0000000000000000  r15: 0x0000000000000000
  rip: 0x0000000100d21aa8  rfl: 0x0000000000010246  cr2: 0x0000000000000050

Binary Images:
       0x100000000 -        0x1006a9fef  com.apple.Safari 5.0 (6533.16) <055D70FE-977B-C3B3-4E40-E05E3D9CF0AB> /Applications/Safari.app/Contents/MacOS/Safari
       0x100755000 -        0x100758fff +WebKitNightlyEnabler.dylib ??? (???) <15D32A12-F646-24DB-E297-AD6ABFBBF813> /Volumes/WebKit/WebKit.app/Contents/Resources/WebKitNightlyEnabler.dylib
       0x10075d000 -        0x100948fe7  com.apple.JavaScriptCore 534+ (534.2+) <4F3AC435-D57F-097D-FE02-73484B6C012F> /Volumes/WebKit/WebKit.app/Contents/Frameworks/10.6/JavaScriptCore.framework/Versions/A/JavaScriptCore
       0x1009ba000 -        0x100b3dfe7  com.apple.WebKit r62241 (534.2+) <14808CE7-C604-7D30-B000-FE4C08FD171E> /Volumes/WebKit/WebKit.app/Contents/Frameworks/10.6/WebKit.framework/Versions/A/WebKit
       0x100c08000 -        0x101a3efe7  com.apple.WebCore 534+ (534.2+) <35FFCA4F-E3BC-3F0E-AB72-2BD6C034D498> /Volumes/WebKit/WebKit.app/Contents/Frameworks/10.6/WebCore.framework/Versions/A/WebCore
       0x1020cf000 -        0x1020f8ff7 +org.andymatuschak.Sparkle 1.5 Beta (git) (830f633) <945EA036-7EC3-D020-C889-29ECB588B891> /Volumes/WebKit/WebKit.app/Contents/Frameworks/10.6/Sparkle.framework/Versions/A/Sparkle
       0x102113000 -        0x1021f9fe7  libcrypto.0.9.7.dylib 0.9.7 (compatibility 0.9.7) <26FC56A6-EFD6-22FA-E1F1-4E1BA61C85BB> /usr/lib/libcrypto.0.9.7.dylib
    0x7fff5fc00000 -     0x7fff5fc3bdef  dyld 132.1 (???) <B536F2F1-9DF1-3B6C-1C2C-9075EA219A06> /usr/lib/dyld
    0x7fff80003000 -     0x7fff8039cff7  com.apple.QuartzCore 1.6.2 (227.22) <76EE0A32-B20B-F316-ADDD-4230329253D5> /System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore
    0x7fff8039d000 -     0x7fff80452fe7  com.apple.ink.framework 1.3.3 (107) <FFC46EE0-3544-A459-2AB9-94778A75E3D4> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/Ink.framework/Versions/A/Ink
    0x7fff80453000 -     0x7fff80611fff  libicucore.A.dylib 40.0.0 (compatibility 1.0.0) <0E53A4A6-AC06-1B61-2285-248F534EE356> /usr/lib/libicucore.A.dylib
    0x7fff80612000 -     0x7fff80661ff7  com.apple.DirectoryService.PasswordServerFramework 6.0 (6.0) <14FD0978-4BE0-336B-A19E-F388694583EB> /System/Library/PrivateFrameworks/PasswordServer.framework/Versions/A/PasswordServer
    0x7fff80671000 -     0x7fff806a9fef  libcups.2.dylib 2.8.0 (compatibility 2.0.0) <31A78904-A500-0DA9-0609-F1EB81383326> /usr/lib/libcups.2.dylib
    0x7fff806aa000 -     0x7fff808ecfef  com.apple.AddressBook.framework 5.0.2 (870) <A1278575-53F2-CC00-7306-E49713FEC7C6> /System/Library/Frameworks/AddressBook.framework/Versions/A/AddressBook
    0x7fff808ed000 -     0x7fff80913fe7  libJPEG.dylib ??? (???) <4060F3E2-BAD3-244F-D777-51BA16569DA4> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/Resources/libJPEG.dylib
    0x7fff80914000 -     0x7fff8095bfef  com.apple.QuickLookFramework 2.2 (327.4) <4E1658D4-F268-2A82-C095-1D01E9EAD05F> /System/Library/Frameworks/QuickLook.framework/Versions/A/QuickLook
    0x7fff8095c000 -     0x7fff8096bfff  com.apple.NetFS 3.2.1 (3.2.1) <FF21DB1E-F425-1005-FB70-BC19CAF4006E> /System/Library/Frameworks/NetFS.framework/Versions/A/NetFS
    0x7fff8096c000 -     0x7fff809b8fff  libauto.dylib ??? (???) <072804DF-36AD-2DBE-7EF8-639CFB79077F> /usr/lib/libauto.dylib
    0x7fff809cf000 -     0x7fff80a0cff7  libFontRegistry.dylib ??? (???) <B63FCC3A-F49E-B42E-6D57-5F59E3A8D8B9> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ATS.framework/Versions/A/Resources/libFontRegistry.dylib
    0x7fff80a0d000 -     0x7fff80a5cfef  libTIFF.dylib ??? (???) <A66CBA9C-A38D-5EDB-BFB5-CB398F033D6F> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/Resources/libTIFF.dylib
    0x7fff80a5d000 -     0x7fff8115a067  com.apple.CoreGraphics 1.543.50 (???) <46A7D60C-0500-B96C-ECAD-1D658487D213> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/CoreGraphics
    0x7fff8116f000 -     0x7fff81171fff  com.apple.print.framework.Print 6.1 (237.1) <4513DB2F-737C-B43C-2D0E-23CD6E838014> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/Print.framework/Versions/A/Print
    0x7fff81172000 -     0x7fff811edfff  com.apple.ISSupport 1.9.3 (51) <BE4B548C-F9C4-2464-12A6-F94A21D569C6> /System/Library/PrivateFrameworks/ISSupport.framework/Versions/A/ISSupport
    0x7fff811ee000 -     0x7fff812abff7  com.apple.CoreServices.OSServices 357 (357) <718F0719-DC9F-E392-7C64-9D7DFE3D02E2> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/OSServices.framework/Versions/A/OSServices
    0x7fff812ac000 -     0x7fff817b0fe7  com.apple.VideoToolbox 0.484.11 (484.11) <4577FF14-E6A7-AAD8-E6E6-ECA9CFCC6989> /System/Library/PrivateFrameworks/VideoToolbox.framework/Versions/A/VideoToolbox
    0x7fff817b1000 -     0x7fff817b1ff7  com.apple.CoreServices 44 (44) <210A4C56-BECB-E3E4-B6EE-7EC53E02265D> /System/Library/Frameworks/CoreServices.framework/Versions/A/CoreServices
    0x7fff81996000 -     0x7fff81a45fff  edu.mit.Kerberos 6.5.10 (6.5.10) <F3F76EDF-5660-78F0-FE6E-33B6174F55A4> /System/Library/Frameworks/Kerberos.framework/Versions/A/Kerberos
    0x7fff81a98000 -     0x7fff81aaefef  libbsm.0.dylib ??? (???) <42D3023A-A1F7-4121-6417-FCC6B51B3E90> /usr/lib/libbsm.0.dylib
    0x7fff81af5000 -     0x7fff81b01fff  libbz2.1.0.dylib 1.0.5 (compatibility 1.0.0) <5C876577-ACB7-020C-F7DB-EE0135C3AB8D> /usr/lib/libbz2.1.0.dylib
    0x7fff81b63000 -     0x7fff81bb8fef  com.apple.framework.familycontrols 2.0.1 (2010) <239940AC-2427-44C6-9E29-998D0ABECDF3> /System/Library/PrivateFrameworks/FamilyControls.framework/Versions/A/FamilyControls
    0x7fff81bc1000 -     0x7fff81bc1ff7  com.apple.Accelerate 1.6 (Accelerate 1.6) <2BB7D669-4B40-6A52-ADBD-DA4DB3BC0B1B> /System/Library/Frameworks/Accelerate.framework/Versions/A/Accelerate
    0x7fff81bc2000 -     0x7fff81bc2ff7  com.apple.Carbon 150 (152) <19B37B7B-1594-AD0A-7F14-FA2F85AD7241> /System/Library/Frameworks/Carbon.framework/Versions/A/Carbon
    0x7fff81bc3000 -     0x7fff81c9dff7  com.apple.vImage 4.0 (4.0) <354F34BF-B221-A3C9-2CA7-9BE5E14AD5AD> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vImage.framework/Versions/A/vImage
    0x7fff81c9e000 -     0x7fff81fd1fe7  com.apple.CoreServices.CarbonCore 861.13 (861.13) <BC2F9B4E-D305-D717-D97E-EC78C7DE9EE9> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonCore.framework/Versions/A/CarbonCore
    0x7fff81fd2000 -     0x7fff81fd7ff7  com.apple.CommonPanels 1.2.4 (91) <4D84803B-BD06-D80E-15AE-EFBE43F93605> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/CommonPanels.framework/Versions/A/CommonPanels
    0x7fff82150000 -     0x7fff82161fff  com.apple.DSObjCWrappers.Framework 10.6 (134) <3C08225D-517E-2822-6152-F6EB13A4ADF9> /System/Library/PrivateFrameworks/DSObjCWrappers.framework/Versions/A/DSObjCWrappers
    0x7fff82162000 -     0x7fff8239dfef  com.apple.imageKit 2.0.3 (1.0) <8DA80BC9-C671-BD89-EA2E-3C632D6ECE30> /System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/ImageKit.framework/Versions/A/ImageKit
    0x7fff8239e000 -     0x7fff82454fff  libobjc.A.dylib 227.0.0 (compatibility 1.0.0) <F206BE6D-8777-AE6C-B367-7BEA76C14241> /usr/lib/libobjc.A.dylib
    0x7fff82455000 -     0x7fff82466fff  SyndicationUI ??? (???) <46D6FA2B-1818-1756-A453-23EB0AC587EB> /System/Library/PrivateFrameworks/SyndicationUI.framework/Versions/A/SyndicationUI
    0x7fff82467000 -     0x7fff8248cfe7  com.apple.CoreVideo 1.6.1 (45.4) <B1516554-88BC-CF1E-5409-BFF27A73D1AF> /System/Library/Frameworks/CoreVideo.framework/Versions/A/CoreVideo
    0x7fff8248d000 -     0x7fff824b5fff  com.apple.DictionaryServices 1.1.1 (1.1.1) <9FD709FC-23F0-F270-EAC1-C590CD516A36> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/DictionaryServices.framework/Versions/A/DictionaryServices
    0x7fff824b6000 -     0x7fff82533fef  libstdc++.6.dylib 7.9.0 (compatibility 7.0.0) <35ECA411-2C08-FD7D-11B1-1B7A04921A5C> /usr/lib/libstdc++.6.dylib
    0x7fff82534000 -     0x7fff82535ff7  com.apple.audio.units.AudioUnit 1.6.3 (1.6.3) <D4183AC4-8A65-8368-A9AF-E2A13D18519C> /System/Library/Frameworks/AudioUnit.framework/Versions/A/AudioUnit
    0x7fff82536000 -     0x7fff82538fff  libRadiance.dylib ??? (???) <D67C08B6-4D4A-916D-E936-528E145A56E2> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/Resources/libRadiance.dylib
    0x7fff82539000 -     0x7fff82548ff7  com.apple.opengl 1.6.8 (1.6.8) <0CDC4F98-7981-A114-1778-AF171075138E> /System/Library/Frameworks/OpenGL.framework/Versions/A/OpenGL
    0x7fff82549000 -     0x7fff8254dff7  libmathCommon.A.dylib 315.0.0 (compatibility 1.0.0) <95718673-FEEE-B6ED-B127-BCDBDB60D4E5> /usr/lib/system/libmathCommon.A.dylib
    0x7fff8254e000 -     0x7fff82553fff  libGIF.dylib ??? (???) <21FC6B02-6AC3-C4DB-0B50-98144802274C> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/Resources/libGIF.dylib
    0x7fff82554000 -     0x7fff82624ff7  com.apple.CFNetwork 454.9.7 (454.9.7) <AA6EB690-6CCF-603D-AAC2-35B9E05D1593> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CFNetwork.framework/Versions/A/CFNetwork
    0x7fff82801000 -     0x7fff82804ff7  libCoreVMClient.dylib ??? (???) <DBB2C09F-4BF4-326C-B775-B7A128C501E3> /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libCoreVMClient.dylib
    0x7fff82805000 -     0x7fff82840fff  com.apple.AE 496.4 (496.4) <CBEDB6A1-FD85-F842-4EB8-CC289FAE0F24> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/AE.framework/Versions/A/AE
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    0x7fff8780f000 -     0x7fff8787dfff  com.apple.AppleVAFramework 4.9.20 (4.9.20) <78727165-8D44-0354-6F6C-68FD798E04A1> /System/Library/PrivateFrameworks/AppleVA.framework/Versions/A/AppleVA
    0x7fff8787e000 -     0x7fff87964fe7  com.apple.DesktopServices 1.5.7 (1.5.7) <8A697128-B6CA-E4A8-C200-6520D5A35FBE> /System/Library/PrivateFrameworks/DesktopServicesPriv.framework/Versions/A/DesktopServicesPriv
    0x7fff87965000 -     0x7fff87970ff7  com.apple.speech.recognition.framework 3.11.1 (3.11.1) <F0DDF27E-DB55-07CE-E548-C62095BE8167> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/SpeechRecognition.framework/Versions/A/SpeechRecognition
    0x7fff87971000 -     0x7fff87bf2fef  com.apple.Foundation 6.6.3 (751.29) <DAEDB589-9F59-9556-CF8D-07556317937B> /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation
    0x7fff87bf3000 -     0x7fff87c09ff7  com.apple.MultitouchSupport.framework 204.13 (204.13) <BFFEC259-F103-B25A-BB52-1AA79116DDBA> /System/Library/PrivateFrameworks/MultitouchSupport.framework/Versions/A/MultitouchSupport
    0x7fff87c0a000 -     0x7fff88414fe7  libBLAS.dylib 219.0.0 (compatibility 1.0.0) <FC941ECB-71D0-FAE3-DCBF-C5A619E594B8> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
    0x7fff88612000 -     0x7fff88a55fef  libLAPACK.dylib 219.0.0 (compatibility 1.0.0) <0CC61C98-FF51-67B3-F3D8-C5E430C201A9> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libLAPACK.dylib
    0x7fff88d97000 -     0x7fff88ddfff7  libvDSP.dylib 268.0.1 (compatibility 1.0.0) <170DE04F-89AB-E295-0880-D69CAFBD7979> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libvDSP.dylib
    0x7fff88e79000 -     0x7fff88f88fe7  libcrypto.0.9.8.dylib 0.9.8 (compatibility 0.9.8) <36DA89A6-3AF5-86F2-BDD5-B94C7C0844D4> /usr/lib/libcrypto.0.9.8.dylib
    0x7fff88fac000 -     0x7fff8900efe7  com.apple.datadetectorscore 2.0 (80.7) <F9D2332D-0890-2ED2-1AC8-F85CB89D8BD4> /System/Library/PrivateFrameworks/DataDetectorsCore.framework/Versions/A/DataDetectorsCore
    0x7fff89050000 -     0x7fff8907fff7  com.apple.quartzfilters 1.6.0 (1.6.0) <9CECB4FC-1CCF-B8A2-B935-5888B21CBEEF> /System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/QuartzFilters.framework/Versions/A/QuartzFilters
    0x7fffffe00000 -     0x7fffffe01fff  libSystem.B.dylib ??? (???) <95E02DD0-ADEA-745B-E7FA-ABA064E4658C> /usr/lib/libSystem.B.dylib

Model: MacBookPro4,1, BootROM MBP41.00C1.B03, 2 processors, Intel Core 2 Duo, 2.4 GHz, 4 GB, SMC 1.27f2
Graphics: NVIDIA GeForce 8600M GT, GeForce 8600M GT, PCIe, 256 MB
Memory Module: global_name
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x8C), Broadcom BCM43xx 1.0 (5.10.91.27)
Bluetooth: Version 2.3.3f8, 2 service, 19 devices, 2 incoming serial ports
Network Service: AirPort, AirPort, en1
Serial ATA Device: KINGSTON SNV325S2, 238,47 GB
Parallel ATA Device: HL-DT-ST DVDRW  GSA-S10N
USB Device: Built-in iSight, 0x05ac  (Apple Inc.), 0x8502, 0xfd400000
USB Device: Hub, 0x0409  (NEC Corporation), 0x005a, 0xfa200000
USB Device: Microsoft Optical Mouse with Tilt Wheel, 0x045e  (Microsoft Corporation), 0x00d1, 0xfa220000
USB Device: USB Trackball, 0x046d  (Logitech Inc.), 0xc408, 0xfa210000
USB Device: EIZO USB HID Monitor, 0x056d, 0x0002, 0xfa230000
USB Device: BRCM2046 Hub, 0x0a5c  (Broadcom Corp.), 0x4500, 0x1a100000
USB Device: Bluetooth USB Host Controller, 0x05ac  (Apple Inc.), 0x820f, 0x1a110000
USB Device: Apple Internal Keyboard / Trackpad, 0x05ac  (Apple Inc.), 0x0231, 0x5d200000
USB Device: IR Receiver, 0x05ac  (Apple Inc.), 0x8242, 0x5d100000

[Alexey Proskuryakov]

Does this only happen with nightly builds?

[Adam Barth]

Sounds like we need a reduction.  Not immediately obvious that it's parser related, but I would rule that out.

It happens with Safari Version 5.0 (6533.16), too.

[Alexey Proskuryakov]

Thanks, then it's not HTML5 parser (assuming it's the same crash trace in Safari 5).

Same in Safari 5:

Process:         Safari [4682]
Path:            /Applications/Safari.app/Contents/MacOS/Safari
Identifier:      com.apple.Safari
Version:         5.0 (6533.16)
Build Info:      WebBrowser-75331600~5
Code Type:       X86-64 (Native)
Parent Process:  launchd [1817]

Date/Time:       2010-07-05 22:40:26.468 +0200
OS Version:      Mac OS X 10.6.4 (10F569)
Report Version:  6

Interval Since Last Report:          39919 sec
Crashes Since Last Report:           7
Per-App Interval Since Last Report:  39851 sec
Per-App Crashes Since Last Report:   6
Anonymous UUID:                      9331DC45-4FCF-41D6-A1FB-D1C48A08064D

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000050
Crashed Thread:  0  Dispatch queue: com.apple.main-thread

Thread 0 Crashed:  Dispatch queue: com.apple.main-thread
0   com.apple.WebCore             	0x00007fff83acc248 WebCore::CSSPrimitiveValue::computeLengthDouble(WebCore::RenderStyle*, WebCore::RenderStyle*, double, bool) + 376
1   com.apple.WebCore             	0x00007fff83acc07b WebCore::CSSPrimitiveValue::computeLengthIntForLength(WebCore::RenderStyle*, WebCore::RenderStyle*, double) + 11
2   com.apple.WebCore             	0x00007fff83a524ab WebCore::CSSStyleSelector::applyProperty(int, WebCore::CSSValue*) + 34811
3   com.apple.WebCore             	0x00007fff83a6618b void WebCore::CSSStyleSelector::applyDeclarations<false>(bool, int, int) + 171
4   com.apple.WebCore             	0x00007fff83a48634 WebCore::CSSStyleSelector::styleForElement(WebCore::Element*, WebCore::RenderStyle*, bool, bool, bool) + 2644
5   com.apple.WebCore             	0x00007fff83a34902 WebCore::Node::styleForRenderer() + 82
6   com.apple.WebCore             	0x00007fff83a3477f WebCore::Node::createRendererIfNeeded() + 143
7   com.apple.WebCore             	0x00007fff83a34600 WebCore::Element::attach() + 32
8   com.apple.WebCore             	0x00007fff83a33bea WebCore::HTMLParser::insertNode(WebCore::Node*, bool) + 330
9   com.apple.WebCore             	0x00007fff83ab8054 WebCore::HTMLParser::parseToken(WebCore::Token*) + 868
10  com.apple.WebCore             	0x00007fff83a33681 WebCore::HTMLTokenizer::processToken() + 657
11  com.apple.WebCore             	0x00007fff83ab4806 WebCore::HTMLTokenizer::parseTag(WebCore::SegmentedString&, WebCore::HTMLTokenizer::State) + 4950
12  com.apple.WebCore             	0x00007fff83ab2ce0 WebCore::HTMLTokenizer::write(WebCore::SegmentedString const&, bool) + 2720
13  com.apple.WebCore             	0x00007fff83c0d11e WebCore::HTMLTokenizer::executeExternalScriptsIfReady() + 1694
14  com.apple.WebCore             	0x00007fff83bbb88c WebCore::CachedScript::checkNotify() + 76
15  com.apple.WebCore             	0x00007fff83b902b6 WebCore::Loader::Host::didFinishLoading(WebCore::SubresourceLoader*) + 358
16  com.apple.WebCore             	0x00007fff83b900b1 WebCore::SubresourceLoader::didFinishLoading() + 49
17  com.apple.Foundation          	0x00007fff87a02b6c _NSURLConnectionDidFinishLoading + 113
18  com.apple.CFNetwork           	0x00007fff8257906e URLConnectionClient::_clientDidFinishLoading(URLConnectionClient::ClientConnectionEventQueue*) + 174
19  com.apple.CFNetwork           	0x00007fff825de3e2 URLConnectionClient::ClientConnectionEventQueue::processAllEventsAndConsumePayload(XConnectionEventInfo<XClientEvent, XClientEventParams>*, long) + 254
20  com.apple.CFNetwork           	0x00007fff8256579f URLConnectionClient::processEvents() + 121
21  com.apple.CFNetwork           	0x00007fff8256557c MultiplexerSource::perform() + 160
22  com.apple.CoreFoundation      	0x00007fff84ae3e91 __CFRunLoopDoSources0 + 1361
23  com.apple.CoreFoundation      	0x00007fff84ae2089 __CFRunLoopRun + 873
24  com.apple.CoreFoundation      	0x00007fff84ae184f CFRunLoopRunSpecific + 575
25  com.apple.HIToolbox           	0x00007fff861e891a RunCurrentEventLoopInMode + 333
26  com.apple.HIToolbox           	0x00007fff861e871f ReceiveNextEventCommon + 310
27  com.apple.HIToolbox           	0x00007fff861e85d8 BlockUntilNextEventMatchingListInMode + 59
28  com.apple.AppKit              	0x00007fff84c7b29e _DPSNextEvent + 708
29  com.apple.AppKit              	0x00007fff84c7abed -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 155
30  com.apple.Safari              	0x0000000100015c96 0x100000000 + 89238
31  com.apple.AppKit              	0x00007fff84c408d3 -[NSApplication run] + 395
32  com.apple.AppKit              	0x00007fff84c395f8 NSApplicationMain + 364
33  com.apple.Safari              	0x0000000100009b18 0x100000000 + 39704

Also happens with a user stylesheet that reads
body { text-rendering: optimizelegibility; }

I think this has to do with text-rendering not being in the high-priority set of properties.

Created attachment 60573 [details]
Move the text-rendering CSS property to the “high priority” group

Fixed in <http://trac.webkit.org/projects/webkit/changeset/62513>.

*** Bug 42136 has been marked as a duplicate of this bug. ***

<rdar://problem/8183959>

*** Bug 44191 has been marked as a duplicate of this bug. ***