Bug 8564 – crashed when closing a tab

• Status: RESOLVED
• Resolution: FIXED
• Component: New Bugs

[tim bates]

Date/Time:      2006-04-24 12:07:46.081 +0100
OS Version:     10.4.6 (Build 8I127)
Report Version: 4

Command: Safari
Path:    /Applications/Safari.app/Contents/MacOS/Safari
Parent:  WindowServer [68]

Version: ??? (14032)

PID:    25986
Thread: 0

Exception:  EXC_BAD_ACCESS (0x0001)
Codes:      KERN_INVALID_ADDRESS (0x0001) at 0x208ba008

Thread 0 Crashed:
0   <<00000000>> 	0xfffeff30 objc_msgSend_rtp + 48
1   com.apple.WebKit         	0x00314bb0 -[WebBaseNetscapePluginView webFrame] + 32
2   com.apple.WebKit         	0x00314bf0 -[WebBaseNetscapePluginView webView] + 32
3   com.apple.WebKit         	0x00315504 -[WebBaseNetscapePluginView viewWillMoveToWindow:] + 116
4   com.apple.AppKit         	0x9373af64 -[NSView _setWindow:] + 60
5   com.apple.AppKit         	0x9373a710 -[NSView removeFromSuperview] + 292
6   com.apple.WebCore        	0x01268d04 WebCore::Widget::removeFromSuperview() + 260
7   com.apple.WebCore        	0x011ed79c WebCore::RenderWidget::destroy() + 92
8   com.apple.WebCore        	0x0129b608 WebCore::Node::detach() + 72
9   com.apple.WebCore        	0x01124a68 WebCore::ContainerNode::detach() + 72
10  com.apple.WebCore        	0x01124a68 WebCore::ContainerNode::detach() + 72
11  com.apple.WebCore        	0x01124a68 WebCore::ContainerNode::detach() + 72
12  com.apple.WebCore        	0x01124a68 WebCore::ContainerNode::detach() + 72
13  com.apple.WebCore        	0x01124a68 WebCore::ContainerNode::detach() + 72
14  com.apple.WebCore        	0x01124a68 WebCore::ContainerNode::detach() + 72
15  com.apple.WebCore        	0x01124a68 WebCore::ContainerNode::detach() + 72
16  com.apple.WebCore        	0x01124a68 WebCore::ContainerNode::detach() + 72
17  com.apple.WebCore        	0x0111b788 WebCore::Document::detach() + 360
18  com.apple.WebCore        	0x01105604 WebCore::FrameMac::setView(WebCore::FrameView*) + 100
19  com.apple.WebCore        	0x011fd938 WebCore::Page::~Page [in-charge]() + 56
20  com.apple.WebCore        	0x01133940 -[WebCorePageBridge dealloc] + 48
21  com.apple.WebKit         	0x0035ec38 -[WebView(WebPrivate) _close] + 120
22  com.apple.Safari         	0x00047d80 0x1000 + 290176
23  com.apple.Safari         	0x00047c24 0x1000 + 289828
24  com.apple.Safari         	0x00047bb8 0x1000 + 289720
25  com.apple.Safari         	0x000719ec 0x1000 + 461292
26  com.apple.AppKit         	0x937c1270 -[NSApplication sendAction:to:from:] + 108
27  com.apple.Safari         	0x00029b5c 0x1000 + 166748
28  com.apple.AppKit         	0x9381baa4 -[NSMenu performActionForItemAtIndex:] + 392
29  com.apple.AppKit         	0x9381b828 -[NSCarbonMenuImpl performActionWithHighlightingForItemAtIndex:] + 104
30  com.apple.AppKit         	0x9381b2d0 -[NSMenu performKeyEquivalent:] + 272
31  com.pozytron.AcidSearch  	0x0163966c -[PZTypeAheadController performKeyEquivalent:] + 116 (bundle1.s:283)
32  com.pozytron.AcidSearch  	0x01632754 -[BrowserWindowController(PZ) pzPerformKeyEquivalent:] + 64 (bundle1.s:283)
33  com.apple.Safari         	0x00029384 0x1000 + 164740
34  com.apple.AppKit         	0x9381ae0c -[NSApplication _handleKeyEquivalent:] + 56
35  com.apple.AppKit         	0x93724a28 -[NSApplication sendEvent:] + 2944
36  com.apple.Safari         	0x00021828 0x1000 + 133160
37  com.apple.AppKit         	0x9371c330 -[NSApplication run] + 508
38  com.apple.AppKit         	0x9380ce68 NSApplicationMain + 452
39  com.apple.Safari         	0x0005cbec 0x1000 + 375788
40  com.apple.Safari         	0x0005ca94 0x1000 + 375444

Thread 1:
0   libSystem.B.dylib        	0x9000b0a8 mach_msg_trap + 8
1   libSystem.B.dylib        	0x9000affc mach_msg + 60
2   com.apple.CoreFoundation 	0x907e4114 __CFRunLoopRun + 832
3   com.apple.CoreFoundation 	0x907e3a18 CFRunLoopRunSpecific + 268
4   com.apple.Foundation     	0x92985164 -[NSRunLoop runMode:beforeDate:] + 172
5   com.apple.Foundation     	0x9298509c -[NSRunLoop run] + 76
6   com.apple.WebKit         	0x0036ce74 +[WebFileDatabase _syncLoop:] + 180
7   com.apple.Foundation     	0x92976194 forkThreadForFunction + 108
8   libSystem.B.dylib        	0x9002ba68 _pthread_body + 96

Thread 2:
0   libSystem.B.dylib        	0x9000b0a8 mach_msg_trap + 8
1   libSystem.B.dylib        	0x9000affc mach_msg + 60
2   com.apple.CoreFoundation 	0x907e4114 __CFRunLoopRun + 832
3   com.apple.CoreFoundation 	0x907e3a18 CFRunLoopRunSpecific + 268
4   com.apple.Foundation     	0x9299d69c +[NSURLConnection(NSURLConnectionInternal) _resourceLoadLoop:] + 264
5   com.apple.Foundation     	0x92976194 forkThreadForFunction + 108
6   libSystem.B.dylib        	0x9002ba68 _pthread_body + 96

Thread 3:
0   libSystem.B.dylib        	0x9000b0a8 mach_msg_trap + 8
1   libSystem.B.dylib        	0x9000affc mach_msg + 60
2   com.apple.CoreFoundation 	0x907e4114 __CFRunLoopRun + 832
3   com.apple.CoreFoundation 	0x907e3a18 CFRunLoopRunSpecific + 268
4   com.apple.Foundation     	0x9299e7dc +[NSURLCache _diskCacheSyncLoop:] + 152
5   com.apple.Foundation     	0x92976194 forkThreadForFunction + 108
6   libSystem.B.dylib        	0x9002ba68 _pthread_body + 96

Thread 4:
0   libSystem.B.dylib        	0x9002c128 semaphore_wait_signal_trap + 8
1   libSystem.B.dylib        	0x90030bec pthread_cond_wait + 480
2   com.apple.Foundation     	0x9297d300 -[NSConditionLock lockWhenCondition:] + 68
3   com.apple.Syndication    	0x99f7150c -[AsyncDB _run:] + 192
4   com.apple.Foundation     	0x92976194 forkThreadForFunction + 108
5   libSystem.B.dylib        	0x9002ba68 _pthread_body + 96

Thread 5:
0   libSystem.B.dylib        	0x9001f5ec select + 12
1   com.apple.CoreFoundation 	0x907f69a8 __CFSocketManager + 472
2   libSystem.B.dylib        	0x9002ba68 _pthread_body + 96

Thread 6:
0   libSystem.B.dylib        	0x9002c128 semaphore_wait_signal_trap + 8
1   libSystem.B.dylib        	0x90030bec pthread_cond_wait + 480
2   com.apple.ColorSync      	0x915d3224 pthreadSemaphoreWait(t_pthreadSemaphore*) + 56
3   com.apple.ColorSync      	0x915d24c0 CMMConvTask(void*) + 40
4   libSystem.B.dylib        	0x9002ba68 _pthread_body + 96

Thread 0 crashed with PPC Thread State 64:
  srr0: 0x00000000fffeff30 srr1: 0x100000000000f030                        vrsave: 0x0000000000000000
    cr: 0x44002242          xer: 0x0000000020000000   lr: 0x0000000000314bb0  ctr: 0x0000000000319810
    r0: 0x00000000906b9570   r1: 0x00000000bfffd870   r2: 0x00000000906b9568   r3: 0x00000000142a5000
    r4: 0x0000000090a93adc   r5: 0x0000000000000000   r6: 0x0000000000000000   r7: 0x0000000000000000
    r8: 0x01d6e3f31b00c858   r9: 0x0000000090200a98  r10: 0x00000000a07c1b8c  r11: 0x00000000f0200a98
   r12: 0x00000000a0395ecc  r13: 0x0000000000000000  r14: 0x0000000000000000  r15: 0x0000000000000000
   r16: 0x0000000000000000  r17: 0x0000000000000000  r18: 0x0000000000000000  r19: 0x0000000000000000
   r20: 0x0000000000000000  r21: 0x0000000000000000  r22: 0x0000000000000000  r23: 0x0000000000000000
   r24: 0x00000000000aedcc  r25: 0x00000000005337a0  r26: 0x00000000a375af28  r27: 0x0000000000000000
   r28: 0x0000000016b91310  r29: 0x0000000000000000  r30: 0x0000000016890530  r31: 0x0000000000314b90

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0x94678000 - 0x946bcfff com.apple.securityinterface 2.1 (24981)	/System/Library/Frameworks/SecurityInterface.framework/Versions/A/SecurityInterface
0x946e0000 - 0x946effff libCGATS.A.dylib 	/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/libCGATS.A.dylib
0x946f7000 - 0x94703fff libCSync.A.dylib 	/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/libCSync.A.dylib
0x94749000 - 0x94761fff libRIP.A.dylib 	/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/libRIP.A.dylib
0x94768000 - 0x947d9fff libstdc++.6.dylib 	/usr/lib/libstdc++.6.dylib
0x9494e000 - 0x94a7cfff com.apple.AddressBook.framework 4.0.3 (483)	/System/Library/Frameworks/AddressBook.framework/Versions/A/AddressBook
0x94b0e000 - 0x94b1dfff com.apple.DSObjCWrappers.Framework 1.1	/System/Library/PrivateFrameworks/DSObjCWrappers.framework/Versions/A/DSObjCWrappers
0x94b25000 - 0x94b52fff com.apple.LDAPFramework 1.4.1 (69.0.1)	/System/Library/Frameworks/LDAP.framework/Versions/A/LDAP
0x94b59000 - 0x94b69fff libsasl2.2.dylib 	/usr/lib/libsasl2.2.dylib
0x94b6d000 - 0x94b9cfff libssl.0.9.7.dylib 	/usr/lib/libssl.0.9.7.dylib
0x94bac000 - 0x94bc9fff libresolv.9.dylib 	/usr/lib/libresolv.9.dylib
0x95dce000 - 0x95df7fff libxslt.1.dylib 	/usr/lib/libxslt.1.dylib
0x978e0000 - 0x978edfff com.apple.agl 2.5.6 (AGL-2.5.6)	/System/Library/Frameworks/AGL.framework/Versions/A/AGL
0x99f6e000 - 0x99fa4fff com.apple.Syndication 1.0.5 (52)	/System/Library/PrivateFrameworks/Syndication.framework/Versions/A/Syndication
0x99fc1000 - 0x99fd3fff com.apple.SyndicationUI 1.0.5 (52)	/System/Library/PrivateFrameworks/SyndicationUI.framework/Versions/A/SyndicationUI

[Tim Omernick]

I wonder if, like 8567, this is caused by the fix for 8562.

[Tim Omernick]

This is in Radar as 4525354.

[Darin Adler]

And now as 4525105.

[Darin Adler]

(In reply to comment #3)
> And now as 4525105.

Sorry, my mistake. These have been marked as duplicates in Radar, which is how I got confused.

[Tim Omernick]

Created attachment 7969 [details]
Patch to more clearly define Netscape plug-in view teardown

[Tim Omernick]

*** Bug 8567 has been marked as a duplicate of this bug. ***

[Tim Omernick]

I attached a patch which fixes this bug, as well as 8567.  The problem was that Maciej's recent change to remove needless dependency on the view hieararchy (8562) exposed a design flaw in the Netscape plug-in code.  Netscape plug-in views did not formerly have a well-defined teardown path; instead, they were relying on being removed from the view hierarchy and deallocated at just the right time.

My patch makes WebFrame keep track of its plug-in views, and invalidate them when the page is about to be torn down.

[Darin Adler]

Comment on attachment 7969 [details]
Patch to more clearly define Netscape plug-in view teardown

+    NSEnumerator *plugInViewEnumerator = [_private->plugInViews objectEnumerator];
+    NSView *plugInView;
+    while ((plugInView = [plugInViewEnumerator nextObject]) != nil)
+        [plugInView setWebFrame:nil];

How about [_private->plugInViews makeObjectsPerformSelector:@selector(setWebFrame:) withObject:nil] for this?

+        Noticed a little bit of funny logic here.  We should stop the plug-in when it is removed from
+        its host window, regardless of whether it is still in an NSWindow.  Our documentation pretty
+        strongly implies that plugins and JavaScript will not work in a WebView that has no host window.

This seems completely wrong to me. Regardless of how the documentation is written, plug-ins are supposed to work in WebViews even if we don't explicitly set a host window. The point of hostWindow is to allow a view to remain attached to a window when it's not in the window any more, but for simple WebView uses where there's no need to detach and reattach the view to a window, you wdon't need to use hostWindow at all. It was really added so we could support tabs.

If we need to update the documentation, that's fine, but we should not change plug-ins and JavaScript to work only when a hostWindow is set.

[Tim Omernick]

Created attachment 7985 [details]
Patch to address Darin's comments

I didn't realize that setting the host window was optional.  I removed that change, and also switched to -makeObjectsPerformSelector:.

[Geoffrey Garen]

Comment on attachment 7985 [details]
Patch to address Darin's comments

r=me

[Tim Omernick]

Fix landed to TOT WebKit, revision 14075.