[Webkit-unassigned] [Bug 106049] New: [Qt][WK2]REGRESSION(r138729): It made plugins/change-widget-and-click-crash.html crash

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=106049

           Summary: [Qt][WK2]REGRESSION(r138729): It made
                    plugins/change-widget-and-click-crash.html crash
           Product: WebKit
           Version: 420+
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: Qt, QtTriaged
          Severity: Normal
          Priority: P2
         Component: New Bugs
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ossy at webkit.org
                CC: beidson at apple.com, hausmann at webkit.org,
                    kbalazs at webkit.org, jonlee at apple.com
            Blocks: 79668,105973


crash log for WebProcess (pid <unknown>):
STDOUT: <empty>
STDERR: 1   0x7fa2918c0638 /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0x19e7638) [0x7fa2918c0638]
STDERR: 2   0x7fa28ea3b420 /lib/x86_64-linux-gnu/libc.so.6(+0x36420) [0x7fa28ea3b420]
STDERR: 3   0x7fa290500a3b /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0x627a3b) [0x7fa290500a3b]
STDERR: 4   0x7fa2904b0958 /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0x5d7958) [0x7fa2904b0958]
STDERR: 5   0x7fa2908ee734 /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0xa15734) [0x7fa2908ee734]
STDERR: 6   0x7fa29077b5c3 /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0x8a25c3) [0x7fa29077b5c3]
STDERR: 7   0x7fa29078b39a /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0x8b239a) [0x7fa29078b39a]
STDERR: 8   0x7fa29077a0e2 /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0x8a10e2) [0x7fa29077a0e2]
STDERR: 9   0x7fa290798141 /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0x8bf141) [0x7fa290798141]
STDERR: 10  0x7fa290b1ec6d /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0xc45c6d) [0x7fa290b1ec6d]
STDERR: 11  0x7fa290b22a47 /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0xc49a47) [0x7fa290b22a47]
STDERR: 12  0x7fa2904f0edb /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0x617edb) [0x7fa2904f0edb]
STDERR: 13  0x7fa2904f107e /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0x61807e) [0x7fa2904f107e]
STDERR: 14  0x7fa290543bba /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0x66abba) [0x7fa290543bba]
STDERR: 15  0x7fa2903a34dc /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0x4ca4dc) [0x7fa2903a34dc]
STDERR: 16  0x7fa29039fa4a /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0x4c6a4a) [0x7fa29039fa4a]
STDERR: 17  0x7fa29039fbcb /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0x4c6bcb) [0x7fa29039fbcb]
STDERR: 18  0x7fa2903a0bc8 /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0x4c7bc8) [0x7fa2903a0bc8]
STDERR: 19  0x7fa2903a0cac /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0x4c7cac) [0x7fa2903a0cac]
STDERR: 20  0x7fa2903a2c79 /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0x4c9c79) [0x7fa2903a2c79]
STDERR: 21  0x7fa29048a29d /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0x5b129d) [0x7fa29048a29d]
STDERR: 22  0x7fa29047e608 /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(WKBundlePostSynchronousMessage+0x38) [0x7fa29047e608]
STDERR: 23  0x7fa2412f6949 /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libWTRInjectedBundle.so(_ZN3WTR22EventSendingController9mouseDownEiPK13OpaqueJSValue+0x79) [0x7fa2412f6949]
STDERR: 24  0x7fa2413017b8 /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libWTRInjectedBundle.so(_ZN3WTR24JSEventSendingController9mouseDownEPK15OpaqueJSContextP13OpaqueJSValueS5_mPKPKS4_PS7_+0x58) [0x7fa2413017b8]
STDERR: 25  0x7fa2915acb26 /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0x16d3b26) [0x7fa2915acb26]
STDERR: 26  0x7fa2917569de /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0x187d9de) [0x7fa2917569de]
STDERR: 27  0x7fa2917640a7 /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0x188b0a7) [0x7fa2917640a7]
STDERR: 28  0x7fa29176a334 /home/webkitbuildbot/slaves/release64bitWebKit2_EC2/buildslave/qt-linux-64-release-webkit2/build/WebKitBuild/Release/lib/libQt5WebKit.so.5(+0x1891334) [0x7fa29176a334]

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