[Webkit-unassigned] [Bug 146620] New: Crash when closing the web inspector

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=146620

            Bug ID: 146620
           Summary: Crash when closing the web inspector
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mcatanzaro at igalia.com
                CC: graouts at webkit.org, joepeck at webkit.org,
                    jonowells at apple.com, mattbaker at apple.com,
                    nvasilyev at apple.com, timothy at apple.com,
                    webkit-bug-importer at group.apple.com

We have some rare crash when closing the web inspector:

Core was generated by `/usr/libexec/webkit2gtk-4.0/WebKitWebProcess 42'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  IPC::Connection::invalidate (this=0x0) at /usr/src/debug/webkitgtk-2.8.3/Source/WebKit2/Platform/IPC/Connection.cpp:345
345        if (!isValid()) {

There's a full backtrace in the downstream bug; here is thread 1:

Thread 1 (Thread 0x7fc3b14e7a00 (LWP 13116)):
#0  IPC::Connection::invalidate (this=0x0) at /usr/src/debug/webkitgtk-2.8.3/Source/WebKit2/Platform/IPC/Connection.cpp:345
No locals.
#1  0x00007fc3af7cd901 in WebKit::WebInspectorUI::closeWindow (this=0x7fc38bff84d0) at /usr/src/debug/webkitgtk-2.8.3/Source/WebKit2/WebProcess/WebPage/WebInspectorUI.cpp:121
No locals.
#2  0x00007fc3afd66716 in WebCore::InspectorFrontendHost::closeWindow (this=0x7fc38be96480) at /usr/src/debug/webkitgtk-2.8.3/Source/WebCore/inspector/InspectorFrontendHost.cpp:166
No locals.
#3  0x00007fc3b073116a in WebCore::jsInspectorFrontendHostPrototypeFunctionCloseWindow (exec=<optimized out>) at /usr/src/debug/webkitgtk-2.8.3/x86_64-redhat-linux-gnu/DerivedSources/WebCore/JSInspectorFrontendHost.cpp:185
No locals.
#4  0x00007fc349fff0a8 in ?? ()
No symbol table info available.
#5  0x00007fffc3588860 in ?? ()
No symbol table info available.
#6  0x00007fc3aedf97fe in llint_entry () from /lib64/libjavascriptcoregtk-4.0.so.18
No symbol table info available.
Backtrace stopped: frame did not save the PC

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