Bug 20480 – Crash

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

[John Moe]

Reliable crash.  I am not sure what my page is doing to cause it.  

Process:         Safari [4348]
Path:            /Volumes/WebKit/WebKit.app/Contents/MacOS/WebKit
Identifier:      org.webkit.nightly.WebKit
Version:         r35844 (35844)
Code Type:       X86 (Native)
Parent Process:  launchd [77]

Date/Time:       2008-08-22 00:33:04.945 -0400
OS Version:      Mac OS X 10.5.4 (9E17)
Report Version:  6

Exception Type:  EXC_BAD_ACCESS (SIGBUS)
Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000000030
Crashed Thread:  0

Thread 0 Crashed:
0   com.apple.WebCore             	0x0126dae9 WebCore::Loader::Host::servePendingRequests(WTF::Deque<WebCore::Request*>&, bool&) + 73
1   com.apple.WebCore             	0x0126e29a WebCore::Loader::Host::servePendingRequests(WebCore::Loader::Priority) + 74
2   com.apple.WebCore             	0x0126ed15 WebCore::Loader::Host::didFinishLoading(WebCore::SubresourceLoader*) + 213
3   com.apple.WebCore             	0x0120d271 WebCore::SubresourceLoader::didFinishLoading() + 49
4   com.apple.Foundation          	0x947843f7 -[NSURLConnection(NSURLConnectionReallyInternal) sendDidFinishLoading] + 87
5   com.apple.Foundation          	0x94784363 _NSURLConnectionDidFinishLoading + 147
6   com.apple.CFNetwork           	0x95519cef sendDidFinishLoadingCallback + 148
7   com.apple.CFNetwork           	0x95516dd6 _CFURLConnectionSendCallbacks + 2022
8   com.apple.CFNetwork           	0x95516573 muxerSourcePerform + 283
9   com.apple.CoreFoundation      	0x92e5f615 CFRunLoopRunSpecific + 3141
10  com.apple.CoreFoundation      	0x92e5fcf8 CFRunLoopRunInMode + 88
11  com.apple.HIToolbox           	0x92f60da4 RunCurrentEventLoopInMode + 283
12  com.apple.HIToolbox           	0x92f60bbd ReceiveNextEventCommon + 374
13  com.apple.HIToolbox           	0x92f60a31 BlockUntilNextEventMatchingListInMode + 106
14  com.apple.AppKit              	0x91a39505 _DPSNextEvent + 657
15  com.apple.AppKit              	0x91a38db8 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 128
16  com.apple.Safari              	0x000086be 0x1000 + 30398
17  com.apple.AppKit              	0x91a31df3 -[NSApplication run] + 795
18  com.apple.AppKit              	0x919ff030 NSApplicationMain + 574
19  com.apple.Safari              	0x000ba4d6 0x1000 + 758998


There is some variation:
Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000063726175
Crashed Thread:  0

Thread 0 Crashed:
0   com.apple.WebCore             	0x01269fe0 WebCore::Loader::Host::servePendingRequests(WTF::Deque<WebCore::Request*>&, bool&) + 64
1   com.apple.WebCore             	0x0126a79a WebCore::Loader::Host::servePendingRequests(WebCore::Loader::Priority) + 74

----

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x000000005119522d
Crashed Thread:  0

Thread 0 Crashed:
0   com.apple.WebCore             	0x0126dada WebCore::Loader::Host::servePendingRequests(WTF::Deque<WebCore::Request*>&, bool&) + 58
1   com.apple.WebCore             	0x0126e29a WebCore::Loader::Host::servePendingRequests(WebCore::Loader::Priority) + 74

----

Exception Type:  EXC_BAD_ACCESS (SIGBUS)
Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000000010
Crashed Thread:  0

Thread 0 Crashed:
0   com.apple.WebCore             	0x0126dae0 WebCore::Loader::Host::servePendingRequests(WTF::Deque<WebCore::Request*>&, bool&) + 64
1   com.apple.WebCore             	0x0126e29a WebCore::Loader::Host::servePendingRequests(WebCore::Loader::Priority) + 74

----

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x000000005119522d
Crashed Thread:  0

Thread 0 Crashed:
0   com.apple.WebCore             	0x0126dada WebCore::Loader::Host::servePendingRequests(WTF::Deque<WebCore::Request*>&, bool&) + 58
1   com.apple.WebCore             	0x0126e29a WebCore::Loader::Host::servePendingRequests(WebCore::Loader::Priority) + 74

[John Moe]

Additional details: It only happens when refreshing (command-R) and does not occur in plain Safari.

[Matt Lilek]

Do you have a specific url this happens at?  Does it happen with every page you reload?

[Mark Rowe (bdash)]

John, in the future please attach crash logs to the bug as an attachment ("Create a New Attachment" after filing the bug) rather than pasting it into the comment field.  Bugzilla wraps the text in comments which mangles the crash log, making it hard to read.

[John Moe]

It happens only with a specific (intranet) page of mine.  The page is created using extjs.

[Mark Rowe (bdash)]

If you save a web archive of the page using Safari and then open it in a nightly build, does it reproduce the crash?

[John Moe]

It does not.

I've since opened the page many more times.  It always crashes when refreshing, but does sometimes crash when it is initially opened.

[Mark Rowe (bdash)]

Can you please attach the crash log to the bug?  Since it's the only information you're giving us to go on, having it in an unmangled form would be useful.

[John Moe]

I am checking to see when it began.  It is somewhere between 35417 and 35814 (yes, I went a long time without updating).

[John Moe]

r35788 works
r35801 fails

It would seem like either:
http://trac.webkit.org/changeset/35799
or
http://trac.webkit.org/changeset/35801

[Mark Rowe (bdash)]

John, can you please attach the crash log (as an attachment) to the bug?

[John Moe]

Created attachment 22930 [details]
Crash Log (r35887)

[Antti Koivisto]

Could you attach the crashing page anyway (perhaps with text content replace with garbage)? The files probably need to be loaded over HTTP for the crash to occur.

[John Moe]

Bug https://bugs.webkit.org/show_bug.cgi?id=20498 seems to be the same issue!

For example (should crash):
http://www.zshare.net/audio/17529753dd32b2e9/

[Anne van Kesteren]

Seems unlikely this is still an issue and there's not enough to go on.