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<script>
function fuzz(){
var a=document.getElementById('a');
var b=document.getElementById('b');
var pa=a.parentNode;
b.parentNode.replaceChild(a,b);
pa.appendChild(b);
}
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<big>
<menu>
<address>
<optgroup label="a"></optgroup>
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<blockquote>
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<ruby>a</ruby>
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<fieldset id="a"><iframe></iframe></fieldset>
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<body onmouseover="fuzz()">
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<!--
==21242==ERROR: AddressSanitizer: heap-use-after-free on address 0x61700022a21c at pc 0x7f0fe52bd9bc bp 0x7fff20ff6650 sp 0x7fff20ff6648
READ of size 4 at 0x61700022a21c thread T0
#0 0x7f0fe52bd9bb (libxul.so!PresShell::DispatchSynthMouseMove(mozilla::WidgetGUIEvent*, bool)+0x1db)
Line 75 of "/builds/slave/m-in-l64-asan-0000000000000000/build/layout/base/RestyleManager.h"
#1 0x7f0fe52cc0c4 (libxul.so!PresShell::ProcessSynthMouseMoveEvent(bool)+0xde4)
Line 5256 of "/builds/slave/m-in-l64-asan-0000000000000000/build/layout/base/nsPresShell.cpp"
#2 0x7f0fe52f0547 (libxul.so!nsRefreshDriver::Tick(long, mozilla::TimeStamp)+0xbb7)
Line 1074 of "/builds/slave/m-in-l64-asan-0000000000000000/build/layout/base/nsRefreshDriver.cpp"
#3 0x7f0fe52f64e0 (libxul.so!mozilla::RefreshDriverTimer::Tick()+0x1f0)
Line 168 of "/builds/slave/m-in-l64-asan-0000000000000000/build/layout/base/nsRefreshDriver.cpp"
#4 0x7f0fe8de4c31 (libxul.so!nsTimerImpl::Fire()+0x6d1)
Line 546 of "/builds/slave/m-in-l64-asan-0000000000000000/build/xpcom/threads/nsTimerImpl.cpp"
#5 0x7f0fe8de52d6 (libxul.so!nsTimerEvent::Run()+0x66)
Line 630 of "/builds/slave/m-in-l64-asan-0000000000000000/build/xpcom/threads/nsTimerImpl.cpp"
#6 0x7f0fe8ddc019 (libxul.so!nsThread::ProcessNextEvent(bool, bool*)+0xaa9)
Line 622 of "/builds/slave/m-in-l64-asan-0000000000000000/build/xpcom/threads/nsThread.cpp"
#7 0x7f0fe8d08371 (libxul.so!NS_ProcessNextEvent(nsIThread*, bool)+0xb1)
Line 251 of "/builds/slave/m-in-l64-asan-0000000000000000/build/xpcom/glue/nsThreadUtils.cpp"
#8 0x7f0fe7955091 (libxul.so!mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*)+0x311)
Line 85 of "/builds/slave/m-in-l64-asan-0000000000000000/build/ipc/glue/MessagePump.cpp"
#9 0x7f0fe8ef7653 (libxul.so!MessageLoop::Run()+0x1c3)
Line 220 of "/builds/slave/m-in-l64-asan-0000000000000000/build/ipc/chromium/src/base/message_loop.cc"
#10 0x7f0fe7733cac (libxul.so!nsBaseAppShell::Run()+0x5c)
Line 161 of "/builds/slave/m-in-l64-asan-0000000000000000/build/widget/xpwidgets/nsBaseAppShell.cpp"
#11 0x7f0fe7135d9e (libxul.so!nsAppStartup::Run()+0xbe)
Line 268 of "/builds/slave/m-in-l64-asan-0000000000000000/build/toolkit/components/startup/nsAppStartup.cpp"
#12 0x7f0fe46bf1c5 (libxul.so!XREMain::XRE_mainRun()+0x1e05)
Line 3886 of "/builds/slave/m-in-l64-asan-0000000000000000/build/toolkit/xre/nsAppRunner.cpp"
#13 0x7f0fe46c00fa (libxul.so!XREMain::XRE_main(int, char**, nsXREAppData const*)+0x4fa)
Line 3954 of "/builds/slave/m-in-l64-asan-0000000000000000/build/toolkit/xre/nsAppRunner.cpp"
#14 0x7f0fe46c102b (libxul.so!XRE_main+0x3ab)
Line 4156 of "/builds/slave/m-in-l64-asan-0000000000000000/build/toolkit/xre/nsAppRunner.cpp"
#15 0x459d1d (firefox!main+0x94d)
Line 275 of "/builds/slave/m-in-l64-asan-0000000000000000/build/browser/app/nsBrowserApp.cpp"
#16 0x7f0ff3d5876c (libc.so.6!__libc_start_main+0xec)
Line 226 of "libc-start.c"
#17 0x45929c (firefox!_start+0x28)
0x61700022a21c is located 28 bytes inside of 760-byte region [0x61700022a200,0x61700022a4f8)
freed by thread T0 here:
#0 0x4461a5 (firefox!free+0x55)
Line 64 of "/builds/slave/moz-toolchain/src/llvm/projects/compiler-rt/lib/asan/asan_malloc_linux.cc"
#1 0x7f0fe529f118 (libxul.so!mozilla::RestyleManager::Release()+0x138)
Line 225 of "../../dist/include/mozilla/mozalloc.h"
previously allocated by thread T0 here:
#0 0x4462e5 (firefox!malloc+0x55)
Line 74 of "/builds/slave/moz-toolchain/src/llvm/projects/compiler-rt/lib/asan/asan_malloc_linux.cc"
#1 0x7f0feddfe5c8 (libmozalloc.so!moz_xmalloc+0x8)
Line 54 of "/builds/slave/m-in-l64-asan-0000000000000000/build/memory/mozalloc/mozalloc.cpp"
#2 0x7f0fe5230421 (libxul.so!nsDocumentViewer::InitInternal(nsIWidget*, nsISupports*, nsIntRect const&, bool, bool, bool)+0x581)
Line 824 of "/builds/slave/m-in-l64-asan-0000000000000000/build/layout/base/nsDocumentViewer.cpp"
#3 0x7f0fe522fe90 (libxul.so!nsDocumentViewer::Init(nsIWidget*, nsIntRect const&)+0x20)
Line 642 of "/builds/slave/m-in-l64-asan-0000000000000000/build/layout/base/nsDocumentViewer.cpp"
#4 0x7f0fe929f537 (libxul.so!nsDocShell::Embed(nsIDocumentViewer*, char const*, nsISupports*)+0xe7)
Line 6397 of "/builds/slave/m-in-l64-asan-0000000000000000/build/docshell/base/nsDocShell.cpp"
#5 0x7f0fe92b14f4 (libxul.so!nsDocShell::CreateDocumentViewer(char const*, nsIRequest*, nsIStreamListener**)+0x1084)
Line 8173 of "/builds/slave/m-in-l64-asan-0000000000000000/build/docshell/base/nsDocShell.cpp"
#6 0x7f0fe9254ad4 (libxul.so!nsDSURIContentListener::DoContent(char const*, bool, nsIRequest*, nsIStreamListener**, bool*)+0x304)
Line 122 of "/builds/slave/m-in-l64-asan-0000000000000000/build/docshell/base/nsDSURIContentListener.cpp"
#7 0x7f0fe92f698f (libxul.so!nsDocumentOpenInfo::TryContentListener(nsIURIContentListener*, nsIChannel*)+0x6ef)
Line 680 of "/builds/slave/m-in-l64-asan-0000000000000000/build/uriloader/base/nsURILoader.cpp"
#8 0x7f0fe92f433c (libxul.so!nsDocumentOpenInfo::DispatchContent(nsIRequest*, nsISupports*)+0x67c)
Line 382 of "/builds/slave/m-in-l64-asan-0000000000000000/build/uriloader/base/nsURILoader.cpp"
#9 0x7f0fe92f3aaf (libxul.so!nsDocumentOpenInfo::OnStartRequest(nsIRequest*, nsISupports*)+0x32f)
Line 258 of "/builds/slave/m-in-l64-asan-0000000000000000/build/uriloader/base/nsURILoader.cpp"
#10 0x7f0fe4964bc2 (libxul.so!nsBaseChannel::OnStartRequest(nsIRequest*, nsISupports*)+0x1e2)
Line 718 of "/builds/slave/m-in-l64-asan-0000000000000000/build/netwerk/base/src/nsBaseChannel.cpp"
Shadow bytes around the buggy address:
0x0c2e8003d3f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c2e8003d400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c2e8003d410: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c2e8003d420: 00 fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c2e8003d430: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x0c2e8003d440: fd fd fd[fd]fd fd fd fd fd fd fd fd fd fd fd fd
0x0c2e8003d450: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c2e8003d460: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c2e8003d470: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c2e8003d480: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c2e8003d490: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fa
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Heap right redzone: fb
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack partial redzone: f4
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
ASan internal: fe
==21242==ABORTING
-->
|
