13360 – REGRESSION: Crash closing live web cam viewer page

RESOLVED FIXED 13360

REGRESSION: Crash closing live web cam viewer page

https://bugs.webkit.org/show_bug.cgi?id=13360

Summary REGRESSION: Crash closing live web cam viewer page

Gibbons Burke

Reported 2007-04-16 04:39:45 PDT

Reproducible crasher in the latest nightly build which doesn't crash in the current production release of Safari. The crash occurs when the web page of the URL is closed (command-W). In WebKit.app many frames of the streaming view are pixelated and stuttered whereas in production Safari it plays smoothly. Here's the crash report: Date/Time: 2007-04-16 06:12:46.287 -0500 OS Version: 10.4.9 (Build 8P135) Report Version: 4 Command: Safari Path: /Applications/Safari.app/Contents/MacOS/Safari Parent: WindowServer [67] Version: ??? (20897) PID: 2785 Thread: 0 Exception: EXC_BREAKPOINT (0x0006) Code[0]: 0x00000001 Code[1]: 0x90926ca0 Thread 0 Crashed: 0 libobjc.A.dylib 0x90926ca0 _objc_trap + 0 1 libobjc.A.dylib 0x90926c14 _objc_error + 76 2 libobjc.A.dylib 0x90926ba4 __objc_error + 64 3 com.apple.WebCore 0x013eaa84 WebCore::FrameLoader::setDocumentLoader(WebCore::DocumentLoader*) + 100 4 com.apple.WebCore 0x013ea858 WebCore::FrameLoader::detachFromParent() + 136 5 com.apple.WebKit 0x00357ab8 -[WebView(WebPrivate) _close] + 312 6 com.apple.Safari 0x00047858 0x1000 + 288856 7 com.apple.Foundation 0x90b0b5f4 -[NSArray makeObjectsPerformSelector:withObject:] + 264 8 com.apple.Safari 0x0005c1ec 0x1000 + 373228 9 com.apple.Safari 0x0005a4f4 0x1000 + 365812 10 com.apple.Foundation 0x90b03ae4 _nsnote_callback + 180 11 com.apple.CoreFoundation 0x902d9078 __CFXNotificationPost + 368 12 com.apple.CoreFoundation 0x902d1114 _CFXNotificationPostNotification + 684 13 com.apple.Foundation 0x90aedeec -[NSNotificationCenter postNotificationName:object:userInfo:] + 92 14 com.apple.AppKit 0x925ab47c -[NSWindow _close] + 100 15 com.apple.AppKit 0x925ab3e0 -[NSWindow close] + 36 16 com.apple.Safari 0x0005a498 0x1000 + 365720 17 com.apple.Safari 0x0005c07c 0x1000 + 372860 18 com.apple.AppKit 0x925aac4c -[NSApplication sendAction:to:from:] + 108 19 com.apple.Safari 0x0002956c 0x1000 + 165228 20 com.apple.AppKit 0x925aab80 -[NSControl sendAction:to:] + 96 21 com.apple.AppKit 0x925aaa60 -[NSCell _sendActionFrom:] + 156 22 com.apple.AppKit 0x925aa540 -[NSButtonCell performClick:] + 472 23 com.apple.AppKit 0x925aac4c -[NSApplication sendAction:to:from:] + 108 24 com.apple.Safari 0x0002956c 0x1000 + 165228 25 com.apple.AppKit 0x926054b8 -[NSMenu performActionForItemAtIndex:] + 392 26 com.apple.AppKit 0x9260523c -[NSCarbonMenuImpl performActionWithHighlightingForItemAtIndex:] + 104 27 com.apple.AppKit 0x92604ce4 -[NSMenu performKeyEquivalent:] + 272 28 com.apple.AppKit 0x926048c4 -[NSApplication _handleKeyEquivalent:] + 220 29 com.apple.AppKit 0x9250e408 -[NSApplication sendEvent:] + 2944 30 com.apple.Safari 0x00021238 0x1000 + 131640 31 com.apple.AppKit 0x92505d10 -[NSApplication run] + 508 32 com.apple.AppKit 0x925f687c NSApplicationMain + 452 33 com.apple.Safari 0x0005c77c 0x1000 + 374652 34 com.apple.Safari 0x0005c624 0x1000 + 374308 Thread 1: 0 libSystem.B.dylib 0x9000b4c8 mach_msg_trap + 8 1 libSystem.B.dylib 0x9000b41c mach_msg + 60 2 com.apple.CoreFoundation 0x902b1ba8 __CFRunLoopRun + 832 3 com.apple.CoreFoundation 0x902b14ac CFRunLoopRunSpecific + 268 4 com.apple.Foundation 0x90b2b6a8 +[NSURLConnection(NSURLConnectionInternal) _resourceLoadLoop:] + 264 5 com.apple.Foundation 0x90b041a0 forkThreadForFunction + 108 6 libSystem.B.dylib 0x9002be88 _pthread_body + 96 Thread 2: 0 libSystem.B.dylib 0x9000b4c8 mach_msg_trap + 8 1 libSystem.B.dylib 0x9000b41c mach_msg + 60 2 com.apple.CoreFoundation 0x902b1ba8 __CFRunLoopRun + 832 3 com.apple.CoreFoundation 0x902b14ac CFRunLoopRunSpecific + 268 4 com.apple.Foundation 0x90b2c7e8 +[NSURLCache _diskCacheSyncLoop:] + 152 5 com.apple.Foundation 0x90b041a0 forkThreadForFunction + 108 6 libSystem.B.dylib 0x9002be88 _pthread_body + 96 Thread 3: 0 libSystem.B.dylib 0x9002c548 semaphore_wait_signal_trap + 8 1 libSystem.B.dylib 0x9003102c pthread_cond_wait + 480 2 com.apple.Foundation 0x90b0b30c -[NSConditionLock lockWhenCondition:] + 68 3 com.apple.Syndication 0x9b7c242c -[AsyncDB _run:] + 192 4 com.apple.Foundation 0x90b041a0 forkThreadForFunction + 108 5 libSystem.B.dylib 0x9002be88 _pthread_body + 96 Thread 4: 0 libSystem.B.dylib 0x9001fa0c select + 12 1 com.apple.CoreFoundation 0x902c4434 __CFSocketManager + 472 2 libSystem.B.dylib 0x9002be88 _pthread_body + 96 Thread 5: 0 libSystem.B.dylib 0x9002c548 semaphore_wait_signal_trap + 8 1 libSystem.B.dylib 0x9003102c pthread_cond_wait + 480 2 com.apple.Foundation 0x90b0b30c -[NSConditionLock lockWhenCondition:] + 68 3 com.apple.AppKit 0x925a6708 -[NSUIHeartBeat _heartBeatThread:] + 324 4 com.apple.Foundation 0x90b041a0 forkThreadForFunction + 108 5 libSystem.B.dylib 0x9002be88 _pthread_body + 96 Thread 6: 0 libSystem.B.dylib 0x9002f20c kevent + 12 1 com.apple.DesktopServices 0x909faeb0 TFSNotificationTask::FSNotificationTaskProc(void*) + 56 2 ...ple.CoreServices.CarbonCore 0x903ed83c PrivateMPEntryPoint + 76 3 libSystem.B.dylib 0x9002be88 _pthread_body + 96 Thread 7: 0 libSystem.B.dylib 0x9002c548 semaphore_wait_signal_trap + 8 1 libSystem.B.dylib 0x9003102c pthread_cond_wait + 480 2 ...ple.CoreServices.CarbonCore 0x903eda2c MPWaitOnQueue + 224 3 com.apple.DesktopServices 0x909fb52c TNodeSyncTask::SyncTaskProc(void*) + 116 4 ...ple.CoreServices.CarbonCore 0x903ed83c PrivateMPEntryPoint + 76 5 libSystem.B.dylib 0x9002be88 _pthread_body + 96 Thread 0 crashed with PPC Thread State 64: srr0: 0x0000000090926ca0 srr1: 0x000000000002f030 vrsave: 0x0000000000000000 cr: 0x24002224 xer: 0x0000000000000004 lr: 0x0000000090926c18 ctr: 0x0000000090020714 r0: 0x0000000090926c14 r1: 0x00000000bfffbe40 r2: 0x00000000a0001304 r3: 0x0000000000000083 r4: 0x0000000000000000 r5: 0x0000000000000083 r6: 0x0000000000000000 r7: 0x0000000000000000 r8: 0x0000000000000000 r9: 0x0000000000000018 r10: 0x0000000000000002 r11: 0x00000000a0006914 r12: 0x0000000090020714 r13: 0x0000000000000000 r14: 0x0000000000000000 r15: 0x0000000000000000 r16: 0x0000000000000000 r17: 0x0000000000000000 r18: 0x000000000062c8d0 r19: 0x000000000067df10 r20: 0x00000000a25072f4 r21: 0x00000000a0288f18 r22: 0x000000000000011d r23: 0x0000000000000000 r24: 0x0000000000000000 r25: 0x0000000090967460 r26: 0x0000000000000000 r27: 0x000000009092d820 r28: 0x000000000743c630 r29: 0x000000000743c630 r30: 0x000000000187da40 r31: 0x0000000090926bd8 Binary Images Description: 0x1000 - 0xdcfff com.apple.Safari 2.0.4 (419.3) /Applications/Safari.app/Contents/MacOS/Safari 0x109000 - 0x10afff WebKitNightlyEnabler.dylib 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0x9f554fff com.apple.audio.SoundManager 3.9 /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/CarbonSound.framework/Versions/A/CarbonSound 0x9f566000 - 0x9f654fff libiconv.2.dylib /usr/lib/libiconv.2.dylib 0x9f657000 - 0x9f73cfff com.apple.vImage 2.4 /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vImage.framework/Versions/A/vImage 0x9f744000 - 0x9f759fff libcups.2.dylib /usr/lib/libcups.2.dylib 0x9f75e000 - 0x9f767fff com.apple.DiskArbitration 2.1 /System/Library/Frameworks/DiskArbitration.framework/Versions/A/DiskArbitration 0x9f76e000 - 0x9f7affff com.apple.CFNetwork 129.20 /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CFNetwork.framework/Versions/A/CFNetwork 0x9f7c4000 - 0x9f822fff com.apple.HIServices 1.5.3 (???) /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/HIServices.framework/Versions/A/HIServices 0x9f851000 - 0x9f908fff com.apple.QD 3.10.24 (???) /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/QD.framework/Versions/A/QD 0x9f945000 - 0x9fd00fff com.apple.CoreGraphics 1.258.61 (???) /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/CoreGraphics 0x9fd8d000 - 0x9fe8ffff libicucore.A.dylib /usr/lib/libicucore.A.dylib 0x9fee9000 - 0x9ffc7fff libxml2.2.dylib /usr/lib/libxml2.2.dylib 0x9ffe7000 - 0x9fff9fff libauto.dylib /usr/lib/libauto.dylib

Attachments
Crash report (20.75 KB, text/plain) 2007-05-04 05:47 PDT, Peter	no flags	Details
Avoid calling decreaseLoadCount() twice for multipart subresources (860 bytes, patch) 2007-05-05 13:14 PDT, mitz	no flags	Details Formatted Diff Diff
Avoid calling decreaseLoadCount() twice for multipart subresources (4.89 KB, patch) 2007-05-15 14:42 PDT, mitz	beidson: review+	Details Formatted Diff Diff
Show Obsolete (1) View All Add attachment proposed patch, testcase, etc.

mitz

Comment 1 2007-04-16 06:58:15 PDT

ASSERTION FAILED: m_loadingResources.contains(identifier) (/WebKit/WebKit/WebView/WebDocumentLoaderMac.mm:93 decreaseLoadCount)

Brady Eidson

Comment 2 2007-04-16 11:22:05 PDT

<rdar://problem/5137180>

Brady Eidson

Comment 3 2007-04-16 12:06:32 PDT

This seems almost certainly related to http://bugs.webkit.org/show_bug.cgi?id=13365

David Kilzer (:ddkilzer)

Comment 4 2007-04-29 03:19:39 PDT

*** Bug 13540 has been marked as a duplicate of this bug. ***

mitz

Comment 5 2007-05-03 12:29:01 PDT

*** Bug 13573 has been marked as a duplicate of this bug. ***

Justin Garcia

Comment 6 2007-05-03 17:20:06 PDT

*** Bug 13580 has been marked as a duplicate of this bug. ***

Peter

Comment 7 2007-05-04 05:47:48 PDT

Created attachment 14333 [details] Crash report

mitz

Comment 8 2007-05-05 13:14:42 PDT

Created attachment 14367 [details] Avoid calling decreaseLoadCount() twice for multipart subresources This patch fixes the crash, but does not address other problems with multipart subresources in TOT (at least with Safari 2), namely that the progress bar and status bar remain in "loading" state after the first part is received, while the Activity panel does not report the additional data received. The behavior of shipping WebKit is the opposite: the progress bar and status bar indicate that the page has finished loading, but the size of the resource in the Activity panel keeps increasing.

Peter

Comment 9 2007-05-07 01:39:56 PDT

The mjpg source still does not render smoothly. It's like watching a television with bad reception. Latest nightly does not crash however.

Brady Eidson

Comment 10 2007-05-08 17:34:42 PDT

Mitz, I think your patch is dead on, but I didn't know it'd been sitting here cause you didn't put it up for review! :) Now comes the layout test... If we don't already have a "multipart resource" in the http tests we might need one. Peter, The webcam view not being smooth is a seperate bug - if you still see it, please file a new bug to track that issue. That said, I do *not* see any problems with the smoothness/rendering. Is it possible its related to your network connection and the server is configured to send a lower-quality image down slow/error-hindered network connections?

Peter

Comment 11 2007-05-09 01:03:24 PDT

I tried the webcam with Safari's latest version from Apple (419.3) and it works fine on my network. Same with Firefox and even IE. Only Webkit doesn't render smoothly and still crashes. Should I file a new bug, or do we consider this one to be still open? Thanks.

David Kilzer (:ddkilzer)

Comment 12 2007-05-09 08:41:13 PDT

(In reply to comment #11) > I tried the webcam with Safari's latest version from Apple (419.3) and it works > fine on my network. Same with Firefox and even IE. Only Webkit doesn't render > smoothly and still crashes. Should I file a new bug, or do we consider this one > to be still open? Thanks. Peter, please file a new bug for the "rendering smoothly" issue. Thanks!

David Kilzer (:ddkilzer)

Comment 13 2007-05-12 02:04:11 PDT

(In reply to comment #12) > Peter, please file a new bug for the "rendering smoothly" issue. Thanks! Bug 13642.

mitz

Comment 14 2007-05-15 14:42:53 PDT

Created attachment 14574 [details] Avoid calling decreaseLoadCount() twice for multipart subresources Now with change log and an http test.

Brady Eidson

Comment 15 2007-05-15 14:49:51 PDT

Comment on attachment 14574 [details] Avoid calling decreaseLoadCount() twice for multipart subresources r=me. I know there are still issues with multipart, including some in WebCore that we can actually address, but I think this is still an important and correct fix for this crasher

Brady Eidson

Comment 16 2007-05-15 15:31:41 PDT

Landed in r21497

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Status RESOLVED

Resolution FIXED

Priority P1

Severity Critical

Classification Unclassified

Version 523.x (Safari 3)

Hardware Mac

OS OS X 10.4

Product WebKit

Component Page Loading

Assignee

Nobody

Reported

2007-04-16 04:39 PDT

Modified

2007-05-15 15:31 PDT History

CC List

5 users Show

URL

http://webcam.sewanee.edu/view/view.shtml

Keywords InRadar, Regression

Duplicates (3)

13540 13573 13580 View as bug list

Depends on

Blocks