[Webkit-unassigned] [Bug 87743] New: Crash in WebCore::SubresourceLoader::releaseResources ()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=87743

           Summary: Crash in WebCore::SubresourceLoader::releaseResources
                    ()
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh Intel
        OS/Version: Mac OS X 10.7
            Status: UNCONFIRMED
          Severity: Major
          Priority: P2
         Component: WebCore JavaScript
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: rex_4539 at yahoo.com


Reproducibility: always

Steps:
1. Have Safari 5.2 installed.
2. Launch Skype 5.7
3. Click on Skype Home tab in the sidebar and immediately cut the internet connection (e.g. unplug ethernet cable or switch off Airport).

What happened:
3. Crash.

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x00000144
0x03309aef in WebCore::SubresourceLoader::releaseResources ()
(gdb) bt
#0  0x03309aef in WebCore::SubresourceLoader::releaseResources ()
#1  0x0290844a in WebCore::ResourceLoader::didFail ()
#2  0x0290805d in WebCore::SubresourceLoader::didFail ()
#3  0x02907d6a in WebCore::ResourceLoader::didFail ()
#4  0x02907d07 in -[WebCoreResourceHandleAsDelegate connection:didFailWithError:] ()
#5  0x9388f652 in -[NSURLConnectionDelegateProxy connection:didFailWithError:] ()
#6  0x9388a3c7 in __51-[NSURLConnectionInternal _withErrorForConnection:]_block_invoke_0 ()
#7  0x93889fec in __65-[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:]_block_invoke_0 ()
#8  0x9388b222 in -[NSURLConnectionInternalConnection invokeForDelegate:] ()
#9  0x93889fa7 in -[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:] ()
#10 0x9388a342 in -[NSURLConnectionInternal _withErrorForConnection:] ()
#11 0x9388ad25 in _NSURLConnectionDidFail ()
#12 0x92e701c4 in ___delegate_didFail_block_invoke_0 ()
#13 0x92e6f3df in ___withDelegateAsync_block_invoke_0 ()
#14 0x92eb2da3 in __block_global_1 ()
#15 0x90ddb5c0 in CFArrayApplyFunction ()
#16 0x92eb3529 in RunloopBlockContext::perform ()
#17 0x92eb3495 in non-virtual thunk to RunloopBlockContext::multiplexerClientPerform() ()
#18 0x92d947a3 in MultiplexerSource::perform ()
#19 0x90dba83f in __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ ()
#20 0x90dba269 in __CFRunLoopDoSources0 ()
#21 0x90ddfef6 in __CFRunLoopRun ()
#22 0x90ddf6ea in CFRunLoopRunSpecific ()
#23 0x90ddf55b in CFRunLoopRunInMode ()
#24 0x993da8a6 in RunCurrentEventLoopInMode ()
#25 0x993e2351 in ReceiveNextEventCommon ()
#26 0x993e21cc in BlockUntilNextEventMatchingListInMode ()
#27 0x95157302 in _DPSNextEvent ()
#28 0x95156b37 in -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] ()
#29 0x951529bc in -[NSApplication run] ()
#30 0x000e641b in SkypeApplicationMain [inlined] () at :85
#31 0x000e641b in main (argv=0x0, argc=485365392) at /Volumes/ServerHD2/buildagent/workspace/17915/SkypeMac/main.m:72

Expected result:
WebKit does not crash.

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