[Webkit-unassigned] [Bug 48742] New: Misaligned memory access in CloneDeserializer on ARM (v7)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=48742

           Summary: Misaligned memory access in CloneDeserializer on ARM
                    (v7)
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: kimmo.t.kinnunen at nokia.com


http://bugs.webkit.org/show_bug.cgi?id=47594

There's a problem on our toolchain:
sbox-arm-none-linux-gnueabi-g++ (4.4.1)
WTF_ARM_ARCH_VERSION = 7

events/message-channel-gc-4.html --> pass

Window/window-postmessage-clone.html --> bus error crash

--

(gdb) bt
#0  0x3bd2fef8 in bool WebCore::CloneDeserializer::readLittleEndian<unsigned long long>(unsigned char const*&, unsigned char const*, unsigned long long&) ()
   from ./libQtWebKit.so.4.9.0
#1  0x3bd2cc40 in bool WebCore::CloneDeserializer::readLittleEndian<unsigned long long>(unsigned long long&) () from ./libQtWebKit.so.4.9.0
#2  0x3bd28280 in WebCore::CloneDeserializer::read(double&) ()
   from ./libQtWebKit.so.4.9.0
#3  0x3bd28cf0 in WebCore::CloneDeserializer::readTerminal() ()
   from ./libQtWebKit.so.4.9.0
#4  0x3bd29ff0 in WebCore::CloneDeserializer::deserialize() ()
   from ./libQtWebKit.so.4.9.0
#5  0x3bd27e1c in WebCore::CloneDeserializer::deserialize(JSC::ExecState*, JSC::JSGlobalObject*, WTF::Vector<unsigned char, 0u> const&) ()
   from ./libQtWebKit.so.4.9.0
#6  0x3bd2aad0 in WebCore::SerializedScriptValue::deserialize(JSC::ExecState*, JSC::JSGlobalObject*) () from ./libQtWebKit.so.4.9.0
#7  0x3ba4fd34 in WebCore::jsMessageEventData(JSC::ExecState*, JSC::JSValue, JSC::Identifier const&) () from ./libQtWebKit.so.4.9.0
#8  0x3c95aee8 in cti_op_get_by_id_custom_stub () from ./libQtWebKit.so.4.9.0
#9  0x3c95aee8 in cti_op_get_by_id_custom_stub () from ./libQtWebKit.so.4.9.0

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