[Webkit-unassigned] [Bug 110359] New: Web Inspector: CSSAgent.setStyleSheetText crashes on inline styles

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=110359

           Summary: Web Inspector: CSSAgent.setStyleSheetText crashes on
                    inline styles
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: timothy at apple.com
                CC: keishi at webkit.org, pmuellr at yahoo.com,
                    joepeck at webkit.org, pfeldman at chromium.org,
                    yurys at chromium.org, apavlov at chromium.org,
                    loislo at chromium.org, vsevik at chromium.org,
                    web-inspector-bugs at googlegroups.com, graouts at apple.com


While experimenting with style editing I found that calling CSSAgent.setStyleSheetText on an inline style's StyleSheetId will cause a crash.

This happens because m_pageStyleSheet is always null for InspectorStyleSheetForInlineStyle.

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000010

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   com.apple.WebCore                 0x0000000101af332e WebCore::InspectorStyleSheet::reparseStyleSheet(WTF::String const&) + 62 (RefPtr.h:58)
1   com.apple.WebCore                 0x0000000101a953aa WebCore::InspectorCSSAgent::SetStyleSheetTextAction::redo(int&) + 42 (InspectorCSSAgent.cpp:334)
2   com.apple.WebCore                 0x0000000101a9532b WebCore::InspectorCSSAgent::SetStyleSheetTextAction::perform(int&) + 43 (InspectorCSSAgent.cpp:319)
3   com.apple.WebCore                 0x0000000101aca931 WebCore::InspectorHistory::perform(WTF::PassOwnPtr<WebCore::InspectorHistory::Action>, int&) + 33 (InspectorHistory.cpp:92)
4   com.apple.WebCore                 0x0000000101a8cc1c WebCore::InspectorCSSAgent::setStyleSheetText(WTF::String*, WTF::String const&, WTF::String const&) + 108 (PassOwnPtr.h:56)
5   com.apple.WebCore                 0x0000000101a609e2 WebCore::InspectorBackendDispatcherImpl::CSS_setStyleSheetText(long, WebCore::InspectorObject*) + 882 (PassRefPtr.h:97)
6   com.apple.WebCore                 0x0000000101a7e507 WebCore::InspectorBackendDispatcherImpl::dispatch(WTF::String const&) + 1687 (RefPtr.h:56)
7   com.apple.WebCore                 0x0000000101ac7ad5 WebCore::InspectorBackendDispatchTask::onTimer(WebCore::Timer<WebCore::InspectorBackendDispatchTask>*) + 69 (RefPtr.h:56)
8   com.apple.WebCore                 0x0000000102243c6f WebCore::ThreadTimers::sharedTimerFiredInternal() + 175 (ThreadTimers.cpp:132)
9   com.apple.WebCore                 0x00000001020cbeda WebCore::timerFired(__CFRunLoopTimer*, void*) + 58 (SharedTimerMac.mm:167)
10  com.apple.CoreFoundation          0x00007fff902e4804 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20
11  com.apple.CoreFoundation          0x00007fff902e431d __CFRunLoopDoTimer + 557
12  com.apple.CoreFoundation          0x00007fff902c9ad9 __CFRunLoopRun + 1529
13  com.apple.CoreFoundation          0x00007fff902c90e2 CFRunLoopRunSpecific + 290
14  com.apple.HIToolbox               0x00007fff95e3eeb4 RunCurrentEventLoopInMode + 209
15  com.apple.HIToolbox               0x00007fff95e3ec52 ReceiveNextEventCommon + 356
16  com.apple.HIToolbox               0x00007fff95e3eae3 BlockUntilNextEventMatchingListInMode + 62
17  com.apple.AppKit                  0x00007fff93bf5563 _DPSNextEvent + 685
18  com.apple.AppKit                  0x00007fff93bf4e22 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 128
19  com.apple.AppKit                  0x00007fff93bec1d3 -[NSApplication run] + 517
20  com.apple.WebCore                 0x0000000102076e8c WebCore::RunLoop::run() + 76 (RunLoopMac.mm:43)
21  com.apple.WebKit2                 0x000000010029d29c int WebKit::ChildProcessMain<WebKit::WebProcess, WebKit::WebContentProcessMainDelegate>(int, char**) + 702 (ChildProcessEntryPoint.h:100)
22  com.apple.WebProcess              0x0000000100000df7 main + 228 (ChildProcessMain.mm:73)
23  libdyld.dylib                     0x00007fff8e0c07e1 start + 1

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