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<base href="https://bugs.webkit.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Hang in JSC::StackFrame::toString in private mode"
href="https://bugs.webkit.org/show_bug.cgi?id=149008">149008</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Hang in JSC::StackFrame::toString in private mode
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>Product</th>
<td>WebKit
</td>
</tr>
<tr>
<th>Version</th>
<td>Other
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>URL</th>
<td>http://www.meteomedia.com/meteo/canada/alberta/calgary
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>Normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P2
</td>
</tr>
<tr>
<th>Component</th>
<td>JavaScriptCore
</td>
</tr>
<tr>
<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>webkit.org@the-compiler.org
</td>
</tr></table>
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<pre>When visiting <a href="http://www.meteomedia.com/meteo/canada/alberta/calgary">http://www.meteomedia.com/meteo/canada/alberta/calgary</a> and private browsing mode is turned on, I get a hang with different stacktraces:
#0 0x00007f1fce550e9f in pthread_getspecific ()
from /usr/lib/libpthread.so.0
#1 0x00007f1fcefbc87f in WTF::fastRealloc(void*, unsigned long) ()
from /usr/lib/libjavascriptcoregtk-1.0.so.0
#2 0x00007f1fcefe883b in WTF::StringImpl::reallocate(WTF::PassRefPtr<WTF::StringImpl>, unsigned int, unsigned char*&) ()
from /usr/lib/libjavascriptcoregtk-1.0.so.0
#3 0x00007f1fcefe1760 in void WTF::StringBuilder::reallocateBuffer<unsigned char>(unsigned int) () from /usr/lib/libjavascriptcoregtk-1.0.so.0
#4 0x00007f1fcefe1b5e in WTF::StringBuilder::append(unsigned char const*, unsigned int) () from /usr/lib/libjavascriptcoregtk-1.0.so.0
#5 0x00007f1fced1bf4d in JSC::StackFrame::toString(JSC::ExecState*) ()
from /usr/lib/libjavascriptcoregtk-1.0.so.0
#6 0x00007f1fced1c2b5 in JSC::Interpreter::stackTraceAsString(JSC::ExecState*, WTF::Vector<JSC::StackFrame, 0ul, WTF::CrashOnOverflow>) ()
from /usr/lib/libjavascriptcoregtk-1.0.so.0
#7 0x00007f1fceea2e52 in JSC::VM::throwException(JSC::ExecState*, JSC::JSValue) () from /usr/lib/libjavascriptcoregtk-1.0.so.0
...
#0 0x00007f1fcee9f395 in JSC::JSFunction::name(JSC::ExecState*) ()
from /usr/lib/libjavascriptcoregtk-1.0.so.0
#1 0x00007f1fcee9f747 in JSC::JSFunction::calculatedDisplayName(JSC::ExecState*) () from /usr/lib/libjavascriptcoregtk-1.0.so.0
#2 0x00007f1fcee9f8b0 in JSC::getCalculatedDisplayName(JSC::ExecState*, JSC::JSObject*) () from /usr/lib/libjavascriptcoregtk-1.0.so.0
#3 0x00007f1fced1bc99 in JSC::StackFrame::toString(JSC::ExecState*) ()
from /usr/lib/libjavascriptcoregtk-1.0.so.0
#4 0x00007f1fced1c2b5 in JSC::Interpreter::stackTraceAsString(JSC::ExecState*, WTF::Vector<JSC::StackFrame, 0ul, WTF::CrashOnOverflow>) ()
from /usr/lib/libjavascriptcoregtk-1.0.so.0
#5 0x00007f1fceea2e52 in JSC::VM::throwException(JSC::ExecState*, JSC::JSValue) () from /usr/lib/libjavascriptcoregtk-1.0.so.0
...
(with QtWebKit):
#0 0x00007ffff57682c8 in JSC::Interpreter::getStackTrace(JSC::VM*, WTF::Vector<JSC::StackFrame, 0ul, WTF::CrashOnOverflow>&, unsigned long) () from /usr/lib/libQt5WebKit.so.5
#1 0x00007ffff57688da in ?? () from /usr/lib/libQt5WebKit.so.5
#2 0x00007ffff5893741 in JSC::throwError(JSC::ExecState*, JSC::JSValue) () from /usr/lib/libQt5WebKit.so.5
...
This only seems to happen in private browsing mode, and is triggered after a few seconds of scrolling and window resizing.
I can reproduce this with Midori - version information:
Version numbers in brackets show the version used at runtime.
Command line midori
Midori 0.5.10 ((null)) Midori
GTK+ 2.24.27 (2.24.28) Glib 2.44.0 (2.44.1)
WebKitGTK+ 2.4.8 (2.4.9) libSoup 2.50.0
cairo 1.14.2 (1.14.2) libnotify No
gcr 3.15.92 granite No
I unfortunately can't easily test with a nightly build right now (sorry!) - but let me know if this can't be reproduced, then I'll continue to investigate.</pre>
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