Bug 8898 – REGRESSION: Attempting to right-click image in own tab on website causes crash

• Component: Images
• Status: RESOLVED FIXED

[Kevin Broderick]

When I load the image above in its own tab and then right-click on it to view EXIF data, Safari w/WebKit r14322 crashes before the right-click menu appears.  Using wget to fetch the image, loading it from a local drive, and then-right clicking on it works as expected (shows right-click menu).  Using Safari 2.0.3 w/released WebKit (stock on OS X 10.4.6 w/all updates) also works as expected (shows right-click menu and does not crash).

Crash report:
Date/Time:      2006-05-14 11:19:36.834 -0400
OS Version:     10.4.6 (Build 8I127)
Report Version: 4

Command: Safari
Path:    /Applications/Safari.app/Contents/MacOS/Safari
Parent:  bash [312]

Version:        2.0.3 (417.9.3)
Build Version:  2
Project Name:   WebBrowser
Source Version: 4170903

PID:    8111
Thread: 0

Exception:  EXC_BAD_ACCESS (0x0001)
Codes:      KERN_PROTECTION_FAILURE (0x0002) at 0x00000038

Thread 0 Crashed:
0   com.apple.WebCore        	0x018ecc98 -[WebCoreFrameBridge getData:andResponse:forURL:] + 56 (Document.h:282)
1   com.apple.WebKit         	0x0032c950 -[WebDataSource subresourceForURL:] + 64 (WebDataSource.m:1080)
2   com.apple.WebKit         	0x003294f4 -[WebDataSource(WebPrivate) _fileWrapperForURL:] + 164 (WebDataSource.m:111)
3   com.apple.WebKit         	0x0032d4f4 -[WebDefaultUIDelegate(WebContextMenu) contextMenuItemsForElement:defaultMenuItems:] + 596 (WebDefaultContextMenuDelegate.m:218)
4   com.apple.WebKit         	0x0035ab50 -[WebView(WebPrivate) _menuForElement:defaultItems:] + 80 (WebView.m:691)
5   com.apple.AppKit         	0x93b65eb8 -[NSView rightMouseDown:] + 68
6   com.apple.AppKit         	0x9377c340 -[NSWindow sendEvent:] + 6424
7   com.apple.Safari         	0x00021ca4 0x1000 + 134308
8   com.apple.AppKit         	0x93724c74 -[NSApplication sendEvent:] + 4172
9   com.apple.Safari         	0x000217a8 0x1000 + 133032
10  com.apple.AppKit         	0x9371c0b0 -[NSApplication run] + 508
11  com.apple.AppKit         	0x9380cbfc NSApplicationMain + 452
12  com.apple.Safari         	0x0005cb98 0x1000 + 375704
13  com.apple.Safari         	0x0005ca40 0x1000 + 375360

Thread 1:
0   libSystem.B.dylib        	0x9000b0a8 mach_msg_trap + 8
1   libSystem.B.dylib        	0x9000affc mach_msg + 60
2   com.apple.CoreFoundation 	0x907e3b78 __CFRunLoopRun + 832
3   com.apple.CoreFoundation 	0x907e347c CFRunLoopRunSpecific + 268
4   com.apple.Foundation     	0x92985164 -[NSRunLoop runMode:beforeDate:] + 172
5   com.apple.Foundation     	0x9298509c -[NSRunLoop run] + 76
6   com.apple.WebKit         	0x00369584 +[WebFileDatabase _syncLoop:] + 180 (WebFileDatabase.m:291)
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 	0x907e3b78 __CFRunLoopRun + 832
3   com.apple.CoreFoundation 	0x907e347c 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 	0x907e3b78 __CFRunLoopRun + 832
3   com.apple.CoreFoundation 	0x907e347c 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    	0x9b6a950c -[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 	0x907f640c __CFSocketManager + 472
2   libSystem.B.dylib        	0x9002ba68 _pthread_body + 96

Thread 0 crashed with PPC Thread State 64:
  srr0: 0x00000000018ecc98 srr1: 0x000000000200f030                        vrsave: 0x0000000000000000
    cr: 0x24004224          xer: 0x0000000020000004   lr: 0x00000000018ecc94  ctr: 0x00000000018e7900
    r0: 0x00000000018ecc90   r1: 0x00000000bfffe600   r2: 0x00000000a0001fac   r3: 0x0000000000000000
    r4: 0x0000000001bccc70   r5: 0x00000000bfffe6b8   r6: 0x00000000bfffe6bc   r7: 0x00000000142253f0
    r8: 0x0000000000000066   r9: 0x0000000000000010  r10: 0x00000000a07c9320  r11: 0x0000000000000001
   r12: 0x00000000018e7900  r13: 0x0000000000000000  r14: 0x0000000000000100  r15: 0x0000000000000000
   r16: 0x0000000000000000  r17: 0x0000000000000000  r18: 0x0000000000000000  r19: 0x0000000000000000
   r20: 0x0000000000000000  r21: 0x0000000000000000  r22: 0x0000000012024520  r23: 0x00000000142fe560
   r24: 0x00000000120a2b50  r25: 0x00000000142253f0  r26: 0x00000000bfffe6bc  r27: 0x00000000003bd2bc
   r28: 0x00000000142253f0  r29: 0x00000000142253f0  r30: 0x00000000bfffe6b8  r31: 0x00000000018ecc70

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0x9ff18000 - 0x9fff8fff com.apple.vImage 2.3	/System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vImage.framework/Versions/A/vImage

Model: PowerBook3,4, BootROM 4.3.7f3, 1 processors, PowerPC G4  (2.1), 800 MHz, 1 GB
Graphics: ATI Mobility Radeon 7500, ATY,RageM7, AGP, 32 MB
Memory Module: SODIMM0/J16TOP, 512 MB, SDRAM, PC133U-333
Memory Module: SODIMM1/J16BOTTOM, 512 MB, SDRAM, PC133U-333
AirPort: AirPort, 9.52
Modem: MicroDash, UCJ, V.92, 1.0F, APPLE VERSION 2.6.6
Network Service: Built-in Ethernet, Ethernet, en0
PCI Card: TXN,PCI1410-02, cardbus, PC Card
Parallel ATA Device: TOSHIBA MK8025GAS, 74.53 GB
Parallel ATA Device: MATSHITACD-RW  CW-8121, 
USB Device: USB Receiver, Logitech, Up to 1.5 Mb/sec, 500 mA
FireWire Device: Maxtor 6Y250L0, DMI, Up to 400 Mb/sec

[Alexey Proskuryakov]

Confirmed with r14350.

r14249 doesn't crash, r14271 does.

[Darin Adler]

Looks like fallout from refactoring of loading logic. Might just "fix itself" if we eliminate the standalone image view and start using the engine as planned.

[Darin Adler]

Missing nil check of document() in -[WebCoreFrameBridge getData:andResponse:forURL:].

[Darin Adler]

Created attachment 8340 [details]
add check for 0 document

(In reply to comment #5)
> Created an attachment (id=8340) [edit]
> add check for 0 document
> 

I don't understand the (quite common) case where document is not zero. In that case, the document is just the XML/HTML document that happened to be in the frame last before the image was opened. While it may be harmless to call cachedObject() on it (what if it contained the image as a subresource?), it just doesn't feel right. But I guess this is going to change soon anyway with the ImageDocument.

[Dave Hyatt]

Comment on attachment 8340 [details]
add check for 0 document

r=me

[Darin Adler]

(In reply to comment #6)
> I don't understand the (quite common) case where document is not zero. In that
> case, the document is just the XML/HTML document that happened to be in the
> frame last before the image was opened. While it may be harmless to call
> cachedObject() on it (what if it contained the image as a subresource?), it
> just doesn't feel right. But I guess this is going to change soon anyway with
> the ImageDocument.

It's true that this won't matter any more for image view, but it could still matter for other views. The code should probably be changed around so the old document goes away, or so that a new empty document is created.

[Darin Adler]

r14416