7926 2006-03-22 20:34:05 -0800 Crash using -callWebScriptMethod to access offsetTop property 2007-01-18 21:34:50 -0800 1 1 1 Unclassified WebKit WebKit API 417.x Mac OS X 10.4 RESOLVED FIXED P1 Normal --- 1 phoenix1701 webkit-unassigned ian mrowe oldest_to_newest 37390 0 phoenix1701 2006-03-22 20:34:05 -0800 Erroneously attempting to call the -callWebScriptMethod:withArguments: method on a DOMNode and passing "offsetTop" as the method name caused a crash in KJS::Object::call at offset 120. The DOMNode in question was a hyperlink element in a document contained in a frameset, but some or all of these circumstances may be irrelevant. 37415 1 ddkilzer 2006-03-23 09:44:24 -0800 Brian, please post a crash log (either as a comment or as an attachment). Also, do you have any Safari extensions like Saft installed? Thanks! 48949 2 joost 2006-07-09 13:12:43 -0700 Since no more info was provided, i'm closing this bug as invalid. 48966 3 phoenix1701 2006-07-09 14:02:22 -0700 Sorry for the delay; here's the crash log you requested.  The actual line of code that caused the crash was: [link callWebScriptMethod:@"offsetTop" withArguments:[NSArray array]]; where "link" was a (valid) DOMNode.  Obviously, since "offsetTop" is a property rather than a method, this shouldn't be expected to work, but neither should it (presumably) crash. Also, I have no Safari extensions or input managers installed. ---===--- Date/Time:      2006-07-09 16:58:45.861 -0400 OS Version:     10.4.7 (Build 8J135) Report Version: 4 Command: RPCSPrototype Path:    /Users/phoenix/Documents/Schoolwork/Rapid Prototyping Project/RPCSPrototype/build/Release/RPCSPrototype.app/Contents/MacOS/RPCSPrototype Parent:  WindowServer [5995] Version: ??? (1.0) PID:    17516 Thread: 0 Exception:  EXC_BAD_ACCESS (0x0001) Codes:      KERN_PROTECTION_FAILURE (0x0002) at 0x000000a9 Thread 0 Crashed: 0   com.apple.JavaScriptCore        0x95bc0978 KJS::Object::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 120 1   com.apple.JavaScriptCore        0x95c02d2c -[WebScriptObject callWebScriptMethod:withArguments:] + 504 2   edu.cmu.firebird.RPCSPrototype  0x000035ec -[TestController selectLinkAtIndex:] + 112 3   com.apple.Foundation            0x92943ad8 _nsnote_callback + 180 4   com.apple.CoreFoundation        0x90803010 __CFXNotificationPost + 368 5   com.apple.CoreFoundation        0x907fb0ec _CFXNotificationPostNotification + 684 6   com.apple.Foundation            0x9292dee0 -[NSNotificationCenter postNotificationName:object:userInfo:] + 92 7   com.apple.WebKit                0x95ae0590 -[WebView(WebPrivate) _progressCompleted:] + 124 8   com.apple.WebKit                0x95aef480 -[WebSubresourceClient didFailWithError:] + 96 9   com.apple.WebKit                0x95aef400 -[WebBaseResourceHandleDelegate connection:didFailWithError:] + 52 10  com.apple.Foundation            0x9299f110 -[NSURLConnection(NSURLConnectionInternal) _sendDidFailCallback] + 100 11  com.apple.Foundation            0x92974ab8 -[NSURLConnection(NSURLConnectionInternal) _sendCallbacks] + 556 12  com.apple.Foundation            0x92974810 _sendCallbacks + 156 13  com.apple.CoreFoundation        0x907dc4cc __CFRunLoopDoSources0 + 384 14  com.apple.CoreFoundation        0x907db9fc __CFRunLoopRun + 452 15  com.apple.CoreFoundation        0x907db47c CFRunLoopRunSpecific + 268 16  com.apple.HIToolbox             0x931eb740 RunCurrentEventLoopInMode + 264 17  com.apple.HIToolbox             0x931eadd4 ReceiveNextEventCommon + 380 18  com.apple.HIToolbox             0x931eac40 BlockUntilNextEventMatchingListInMode + 96 19  com.apple.AppKit                0x936eeae4 _DPSNextEvent + 384 20  com.apple.AppKit                0x936ee7a8 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 116 21  com.apple.AppKit                0x936eacec -[NSApplication run] + 472 22  com.apple.AppKit                0x937db87c NSApplicationMain + 452 23  edu.cmu.firebird.RPCSPrototype  0x000028f8 _start + 340 (crt.c:272) 24  edu.cmu.firebird.RPCSPrototype  0x000027a0 start + 60 Thread 1: 0   libSystem.B.dylib               0x9000b268 mach_msg_trap + 8 1   libSystem.B.dylib               0x9000b1bc mach_msg + 60 2   com.unsanity.ape                0xc0002afc __ape_internal + 3300 3   com.unsanity.ape                0xc0001910 __ape_agent + 64 4   libSystem.B.dylib               0x9002bc28 _pthread_body + 96 Thread 2: 0   libSystem.B.dylib               0x9000b268 mach_msg_trap + 8 1   libSystem.B.dylib               0x9000b1bc mach_msg + 60 2   com.apple.CoreFoundation        0x907dbb78 __CFRunLoopRun + 832 3   com.apple.CoreFoundation        0x907db47c CFRunLoopRunSpecific + 268 4   com.apple.Foundation            0x9296b69c +[NSURLConnection(NSURLConnectionInternal) _resourceLoadLoop:] + 264 5   com.apple.Foundation            0x92944194 forkThreadForFunction + 108 6   libSystem.B.dylib               0x9002bc28 _pthread_body + 96 Thread 3: 0   libSystem.B.dylib               0x9000b268 mach_msg_trap + 8 1   libSystem.B.dylib               0x9000b1bc mach_msg + 60 2   com.apple.CoreFoundation        0x907dbb78 __CFRunLoopRun + 832 3   com.apple.CoreFoundation        0x907db47c CFRunLoopRunSpecific + 268 4   com.apple.Foundation            0x9296c7dc +[NSURLCache _diskCacheSyncLoop:] + 152 5   com.apple.Foundation            0x92944194 forkThreadForFunction + 108 6   libSystem.B.dylib               0x9002bc28 _pthread_body + 96 Thread 4: 0   libSystem.B.dylib               0x9000b268 mach_msg_trap + 8 1   libSystem.B.dylib               0x9000b1bc mach_msg + 60 2   com.apple.CoreFoundation        0x907dbb78 __CFRunLoopRun + 832 3   com.apple.CoreFoundation        0x907db47c CFRunLoopRunSpecific + 268 4   com.apple.Foundation            0x92953164 -[NSRunLoop runMode:beforeDate:] + 172 5   com.apple.Foundation            0x9295309c -[NSRunLoop run] + 76 6   com.apple.WebKit                0x95ac1f70 +[WebFileDatabase _syncLoop:] + 176 7   com.apple.Foundation            0x92944194 forkThreadForFunction + 108 8   libSystem.B.dylib               0x9002bc28 _pthread_body + 96 Thread 0 crashed with PPC Thread State 64:   srr0: 0x0000000095bc0978 srr1: 0x000000000200f030                        vrsave: 0x0000000000000000     cr: 0x24002288          xer: 0x0000000020000007   lr: 0x0000000095bc0908  ctr: 0x00000000907beac8     r0: 0x0000000000000001   r1: 0x00000000bfffdf10   r2: 0x0000000000000000   r3: 0x00000000bfffdf50     r4: 0x00000000000000a9   r5: 0x00000000003db310   r6: 0x00000000bfffe000   r7: 0x00000000bfffe010     r8: 0x0000000000000000   r9: 0x00000000a5bd7034  r10: 0x00000000a5bdd808  r11: 0x00000000a5bdd800    r12: 0x00000000907beac8  r13: 0x0000000000000000  r14: 0x0000000000000001  r15: 0x0000000000000000    r16: 0x0000000000000000  r17: 0x0000000000000000  r18: 0x000000000030a350  r19: 0x00000000003625b0    r20: 0x00000000a5ac1890  r21: 0x00000000a07b2eb0  r22: 0x0000000000000001  r23: 0x0000000000000000    r24: 0x00000000003061b0  r25: 0x00000000a5be2b34  r26: 0x00000000bfffe030  r27: 0x00000000003aefa0    r28: 0x00000000003db310  r29: 0x00000000bfffe020  r30: 0x00000000a5bd6fa4  r31: 0x0000000095bc0908 Binary Images Description:     0x1000 -     0x4fff edu.cmu.firebird.RPCSPrototype ??? 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0x94b20fff libstdc++.6.dylib  /usr/lib/libstdc++.6.dylib 0x94b93000 - 0x94bb3fff libmx.A.dylib  /usr/lib/libmx.A.dylib 0x95abf000 - 0x95b4dfff com.apple.WebKit 418.8 /System/Library/Frameworks/WebKit.framework/Versions/A/WebKit 0x95ba9000 - 0x95c3ffff com.apple.JavaScriptCore 418.3 /System/Library/Frameworks/WebKit.framework/Versions/A/Frameworks/JavaScriptCore.framework/Versions/A/JavaScriptCore 0x95c7c000 - 0x95f88fff com.apple.WebCore 418.19 /System/Library/Frameworks/WebKit.framework/Versions/A/Frameworks/WebCore.framework/Versions/A/WebCore 0x96111000 - 0x9613afff libxslt.1.dylib  /usr/lib/libxslt.1.dylib 0x96eba000 - 0x96f5dfff libcrypto.0.9.dylib  /usr/lib/libcrypto.0.9.dylib 0xc0000000 - 0xc000ffff com.unsanity.ape 1.5.1 /Library/Frameworks/ApplicationEnhancer.framework/Versions/A/ApplicationEnhancer Model: PowerMac3,6, BootROM 4.4.8f2, 2 processors, PowerPC G4  (3.2), 1.25 GHz, 1 GB Graphics: ATI Radeon 9000 Pro, ATY,RV250, AGP, 64 MB Memory Module: DIMM0/J21, 512 MB, DDR SDRAM, PC2600U-25330 Memory Module: DIMM1/J22, 512 MB, DDR SDRAM, PC2600U-25330 Modem: Dash2, UCJ, V.92, 1.0F, APPLE VERSION 2.6.6 Network Service: Built-in Ethernet, Ethernet, en0 Network Service: PCI Ethernet Slot 2, Ethernet, en1 Network Service: Built-in FireWire, FireWire, fw0 PCI Card: pci1186,1301, sppci_ethernet, SLOT-2 Parallel ATA Device: PHILIPS CDD5101,  Parallel ATA Device: IBM-IC35L120AVVA07-0, 115.04 GB USB Device: Hub in Apple Pro Keyboard, Mitsumi Electric, Up to 12 Mb/sec, 500 mA USB Device: USB Mouse, Kensington, Up to 1.5 Mb/sec, 100 mA USB Device: Apple Pro Keyboard, Mitsumi Electric, Up to 12 Mb/sec, 250 mA USB Device: Lexmark 510 Series, Lexmark, Up to 12 Mb/sec, 500 mA 48967 4 joost 2006-07-09 14:20:26 -0700 Could you try with those extensions you have their disabled? If it still occurs then, that'd be even better. Even got a small program/testcase to demonstrate the issue perhaps? 34252 5 mrowe 2007-01-18 20:41:54 -0800 I can confirm that this crashes with WebKit 418.9.1, still need to test with ToT. 34253 6 mrowe 2007-01-18 20:46:27 -0800 With a debug build of ToT we hit an assertion failure: Program received signal EXC_BAD_ACCESS, Could not access memory. Reason: KERN_PROTECTION_FAILURE at address: 0x00000001 0x003f4dd1 in KJS::JSObject::call (this=0x1, exec=0x21841bc, thisObj=0x7ec080, args=@0xbfffe45c) at /Users/mrowe/Documents/Source/SVN/WebKit-Nightlies/JavaScriptCore/kjs/object.cpp:70 70 assert(implementsCall()); (gdb) bt #0 0x003f4dd1 in KJS::JSObject::call (this=0x1, exec=0x21841bc, thisObj=0x7ec080, args=@0xbfffe45c) at /Users/mrowe/Documents/Source/SVN/WebKit-Nightlies/JavaScriptCore/kjs/object.cpp:70 #1 0x013026eb in -[WebScriptObject callWebScriptMethod:withArguments:] (self=0x21c2120, _cmd=0x2cadb4, name=0x2058, args=0x21c4eb0) at /Users/mrowe/Documents/Source/SVN/WebKit-Nightlies/WebCore/bindings/objc/WebScriptObject.mm:193 #2 0x00001e30 in -[MyController webView:didFinishLoadForFrame:] () #3 0x90a57c56 in objc_msgSendv () #4 0x925fc43e in -[NSInvocation invoke] () #5 0x92622433 in -[NSInvocation invokeWithTarget:] () #6 0x00260836 in -[_WebSafeForwarder forwardInvocation:] (self=0x2168ae0, _cmd=0x90aa6194, anInvocation=0x21c1c30) at /Users/mrowe/Documents/Source/SVN/WebKit-Nightlies/WebKit/WebView/WebView.mm:1426 #7 0x925fb4f4 in -[NSObject(NSForwardInvocation) forward::] () #8 0x90a57ba1 in _objc_msgForward () #9 0x00293923 in WebFrameLoaderClient::dispatchDidFinishLoad (this=0x2123c60) at /Users/mrowe/Documents/Source/SVN/WebKit-Nightlies/WebKit/WebCoreSupport/WebFrameLoaderClient.mm:466 #10 0x0139827c in WebCore::FrameLoader::checkLoadCompleteForThisFrame (this=0x2817000) at /Users/mrowe/Documents/Source/SVN/WebKit-Nightlies/WebCore/loader/FrameLoader.cpp:2680 #11 0x0139852c in WebCore::FrameLoader::checkLoadComplete (this=0x2817000) at /Users/mrowe/Documents/Source/SVN/WebKit-Nightlies/WebCore/loader/FrameLoader.cpp:2752 #12 0x013986b7 in WebCore::FrameLoader::finishedLoading (this=0x2817000) at /Users/mrowe/Documents/Source/SVN/WebKit-Nightlies/WebCore/loader/FrameLoader.cpp:2502 #13 0x013a1c11 in WebCore::MainResourceLoader::didFinishLoading (this=0x2832c00) at /Users/mrowe/Documents/Source/SVN/WebKit-Nightlies/WebCore/loader/MainResourceLoader.cpp:315 #14 0x013a322c in WebCore::ResourceLoader::didFinishLoading (this=0x2832c00) at /Users/mrowe/Documents/Source/SVN/WebKit-Nightlies/WebCore/loader/ResourceLoader.cpp:311 #15 0x01383269 in -[WebCoreResourceHandleAsDelegate connectionDidFinishLoading:] (self=0x2153fe0, _cmd=0x90a9d160, con=0x2153220) at /Users/mrowe/Documents/Source/SVN/WebKit-Nightlies/WebCore/platform/network/mac/ResourceHandleMac.mm:367 #16 0x9265be00 in -[NSURLConnection(NSURLConnectionInternal) _sendDidFinishLoadingCallback] () #17 0x92659ea5 in -[NSURLConnection(NSURLConnectionInternal) _sendCallbacks] () #18 0x92659b41 in _sendCallbacks () #19 0x90829379 in CFRunLoopRunSpecific () #20 0x90828eb5 in CFRunLoopRunInMode () #21 0x92dcdb90 in RunCurrentEventLoopInMode () #22 0x92dcd1ce in ReceiveNextEventCommon () #23 0x92dcd0ee in BlockUntilNextEventMatchingListInMode () #24 0x9326f465 in _DPSNextEvent () #25 0x9326f056 in -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] () #26 0x93268ddb in -[NSApplication run] () #27 0x9325cd2f in NSApplicationMain () #28 0x00001cf6 in _start () #29 0x00001c1d in start () Current language: auto; currently c++ 34242 7 12550 mrowe 2007-01-18 21:12:50 -0800 Created attachment 12550 Patch As well as fixing the bug in question, I altered the behaviour when an exception is thrown in the called method. It now returns 0 as this would provide some method for the caller to know that the call to the function failed. 34243 8 12550 mrowe 2007-01-18 21:14:47 -0800 Comment on attachment 12550 Patch For the record, it's possible that the change from returning undefined to returning zero when the function call raises an exception could cause compatibility problems. I'm not sure if it's a good change to make for that reason, but it seems a lot more sensible behaviour. 34244 9 12550 timothy 2007-01-18 21:27:59 -0800 Comment on attachment 12550 Patch r=me As mentioned on IRC. File a new bug about the proposed exception change. And leave this part of of the patch: - result = jsUndefined(); exec->clearException(); + return 0; 34238 10 mrowe 2007-01-18 21:29:56 -0800 Landed in r18973. 34236 11 mrowe 2007-01-18 21:34:50 -0800 Filed bug 12332 about the return value when exception is thrown. 12550 2007-01-18 21:12:50 -0800 2007-01-18 21:27:59 -0800 Patch webkit-bug-7926-v1.patch text/plain 2012 mrowe SW5kZXg6IFdlYkNvcmUvQ2hhbmdlTG9nCj09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT0KLS0tIFdlYkNvcmUvQ2hhbmdlTG9n CShyZXZpc2lvbiAxODk3MikKKysrIFdlYkNvcmUvQ2hhbmdlTG9nCSh3b3JraW5nIGNvcHkpCkBA IC0xLDMgKzEsMTUgQEAKKzIwMDctMDEtMTkgIE1hcmsgUm93ZSAgPG1yb3dlQGFwcGxlLmNvbT4K KworICAgICAgICBSZXZpZXdlZCBieSBOT0JPRFkgKE9PUFMhKS4KKworICAgICAgICBGaXggZm9y IGh0dHA6Ly9idWdzLndlYmtpdC5vcmcvc2hvd19idWcuY2dpP2lkPTc5MjYKKyAgICAgICAgQnVn IDc5MjY6IENyYXNoIHVzaW5nIC1jYWxsV2ViU2NyaXB0TWV0aG9kIHRvIGFjY2VzcyBvZmZzZXRU b3AgcHJvcGVydHkKKworICAgICAgICAqIGJpbmRpbmdzL29iamMvV2ViU2NyaXB0T2JqZWN0Lm1t OgorICAgICAgICAoLVtXZWJTY3JpcHRPYmplY3QgY2FsbFdlYlNjcmlwdE1ldGhvZDp3aXRoQXJn dW1lbnRzOl0pOiBCYWlsIG91dCBlYXJseSBpZiBmdW5jdGlvbiB2YWx1ZSBpcyBhbiBpbW1lZGlh dGUsCisgICAgICAgIG9yIGlmIHRoZSBmdW5jdGlvbiBvYmplY3QgaXMgbm90IGNhbGxhYmxlLiAg V2hlbiB3ZSBhcmUgdW5hYmxlIHRvIGNhbGwgdGhlIHNwZWNpZmllZCBmdW5jdGlvbiwgd2UgcmV0 dXJuIG5pbAorICAgICAgICBzbyB0aGF0IHRoZSBjYWxsZXIgY2FuIGRpZmZlcmVudGlhdGUgYmV0 d2VlbiBhIGZhaWxlZCBjYWxsIGFuZCBsZWdpdGltYXRlIGZ1bmN0aW9uIHJldHVybmluZyB1bmRl ZmluZWQuCisKIDIwMDctMDEtMTggIFNhbSBXZWluaWcgIDxzYW1Ad2Via2l0Lm9yZz4KIAogICAg ICAgICBSZXZpZXdlZCBieSBNYWNpZWouCkluZGV4OiBXZWJDb3JlL2JpbmRpbmdzL29iamMvV2Vi U2NyaXB0T2JqZWN0Lm1tCj09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT0KLS0tIFdlYkNvcmUvYmluZGluZ3Mvb2JqYy9XZWJT Y3JpcHRPYmplY3QubW0JKHJldmlzaW9uIDE4OTcxKQorKysgV2ViQ29yZS9iaW5kaW5ncy9vYmpj L1dlYlNjcmlwdE9iamVjdC5tbQkod29ya2luZyBjb3B5KQpAQCAtMTgxLDIxICsxODEsMjMgQEAg c3RhdGljIExpc3QgbGlzdEZyb21OU0FycmF5KEV4ZWNTdGF0ZSAqZQogICAgIElkZW50aWZpZXIg aWRlbnRpZmllcih2LT50b1N0cmluZyhleGVjKSk7CiAgICAgSlNWYWx1ZSAqZnVuYyA9IFtzZWxm IF9pbXBdLT5nZXQoZXhlYywgaWRlbnRpZmllcik7CiAKLSAgICBpZiAoIWZ1bmMgfHwgZnVuYy0+ aXNVbmRlZmluZWQoKSkgeworICAgIGlmICghZnVuYyB8fCAhZnVuYy0+aXNPYmplY3QoKSkKICAg ICAgICAgLy8gTWF5YmUgdGhyb3cgYW4gZXhjZXB0aW9uIGhlcmU/CiAgICAgICAgIHJldHVybiAw OwotICAgIH0KIAotICAgIC8vIENhbGwgdGhlIGZ1bmN0aW9uIG9iamVjdC4gICAgCisgICAgLy8g Q2FsbCB0aGUgZnVuY3Rpb24gb2JqZWN0LgogICAgIEpTT2JqZWN0ICpmdW5jSW1wID0gc3RhdGlj X2Nhc3Q8SlNPYmplY3QqPihmdW5jKTsKKyAgICBpZiAoIWZ1bmNJbXAtPmltcGxlbWVudHNDYWxs KCkpCisgICAgICAgIHJldHVybiAwOworCiAgICAgSlNPYmplY3QgKnRoaXNPYmogPSBjb25zdF9j YXN0PEpTT2JqZWN0Kj4oW3NlbGYgX2ltcF0pOwogICAgIExpc3QgYXJnTGlzdCA9IGxpc3RGcm9t TlNBcnJheShleGVjLCBhcmdzKTsKICAgICBKU1ZhbHVlICpyZXN1bHQgPSBmdW5jSW1wLT5jYWxs KGV4ZWMsIHRoaXNPYmosIGFyZ0xpc3QpOwogCiAgICAgaWYgKGV4ZWMtPmhhZEV4Y2VwdGlvbigp KSB7CiAgICAgICAgIExPR19FWENFUFRJT04oZXhlYyk7Ci0gICAgICAgIHJlc3VsdCA9IGpzVW5k ZWZpbmVkKCk7CiAgICAgICAgIGV4ZWMtPmNsZWFyRXhjZXB0aW9uKCk7CisgICAgICAgIHJldHVy biAwOwogICAgIH0KIAogICAgIC8vIENvbnZlcnQgYW5kIHJldHVybiB0aGUgcmVzdWx0IG9mIHRo ZSBmdW5jdGlvbiBjYWxsLgo=