[Webkit-unassigned] [Bug 81159] New: Assertion failures in WebCore::Page::goBackOrForward causing multiple "crashes" on Lion Intel Debug WebKit2 testers
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Wed Mar 14 14:43:03 PDT 2012
https://bugs.webkit.org/show_bug.cgi?id=81159
Summary: Assertion failures in WebCore::Page::goBackOrForward
causing multiple "crashes" on Lion Intel Debug WebKit2
testers
Product: WebKit
Version: 528+ (Nightly build)
Platform: Unspecified
URL: http://build.webkit.org/results/Lion%20Intel%20Debug%2
0(WebKit2%20Tests)/r110728%20(4911)/css1/box_propertie
s/border_bottom_width-crash-log.txt
OS/Version: Unspecified
Status: NEW
Keywords: LayoutTestFailure, MakingBotsRed, NeedsRadar,
Regression
Severity: Normal
Priority: P2
Component: History
AssignedTo: webkit-unassigned at lists.webkit.org
ReportedBy: jberlin at webkit.org
CC: ap at webkit.org, beidson at apple.com,
webkit-bug-importer at group.apple.com,
timothy_horton at apple.com
void Page::goBackOrForward(int distance)
{
if (distance == 0)
return;
HistoryItem* item = backForward()->itemAtIndex(distance);
if (!item) {
if (distance > 0) {
if (int forwardCount = backForward()->forwardCount())
item = backForward()->itemAtIndex(forwardCount);
} else {
if (int backCount = backForward()->backCount())
item = backForward()->itemAtIndex(-backCount);
}
}
ASSERT(item);
if (!item)
return;
goToItem(item, FrameLoadTypeIndexedBackForward);
}
It is not clear that the assertion is valid, since it seems possible that you couldn't go back or forward.
This seems separate from the crash with a similar backtrace seen on Lion Intel Debug Tests (http://build.webkit.org/results/Lion%20Intel%20Debug%20%28Tests%29/r110714%20%284462%29/compositing/iframes/page-cache-layer-tree-crash-log.txt)
Unfortunately, I do not know when it started.
Here is a sample:
http://build.webkit.org/results/Lion%20Intel%20Debug%20(WebKit2%20Tests)/r110743%20(4915)/fast/frames/layout-after-destruction-crash-log.txt
Process: WebProcess [24853]
Path: /Volumes/VOLUME/*/WebKit2.framework/WebProcess.app/Contents/MacOS/WebProcess
Identifier: com.apple.WebProcess
Version: 536+ (536.3+)
Code Type: X86-64 (Native)
Parent Process: WebKitTestRunner [24842]
Date/Time: 2012-03-14 14:22:29.730 -0700
OS Version: Mac OS X 10.7.2 (11C74)
Report Version: 9
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x00000000bbadbeef
VM Regions Near 0xbbadbeef:
-->
__TEXT 000000010e447000-000000010e448000 [ 4K] r-x/rwx SM=COW /Volumes/VOLUME/*/WebKit2.framework/WebProcess.app/Contents/MacOS/WebProcess
Application Specific Information:
objc[24853]: garbage collection is OFF
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 com.apple.WebCore 0x00000001112a1b23 WebCore::Page::goBackOrForward(int) + 291 (Page.cpp:327)
1 com.apple.WebCore 0x000000011020b3de WebCore::BackForwardController::goBackOrForward(int) + 30 (BackForwardController.cpp:60)
2 com.apple.WebCore 0x0000000111243b42 WebCore::ScheduledHistoryNavigation::fire(WebCore::Frame*) + 338 (NavigationScheduler.cpp:206)
3 com.apple.WebCore 0x000000011124181f WebCore::NavigationScheduler::timerFired(WebCore::Timer<WebCore::NavigationScheduler>*) + 175 (NavigationScheduler.cpp:419)
4 com.apple.WebCore 0x0000000111243893 WebCore::Timer<WebCore::NavigationScheduler>::fired() + 115 (Timer.h:100)
5 com.apple.WebCore 0x00000001118d0fa7 WebCore::ThreadTimers::sharedTimerFiredInternal() + 311 (ThreadTimers.cpp:118)
6 com.apple.WebCore 0x00000001118d0ce9 WebCore::ThreadTimers::sharedTimerFired() + 25 (ThreadTimers.cpp:94)
7 com.apple.WebCore 0x00000001116abcf3 _ZN7WebCoreL10timerFiredEP16__CFRunLoopTimerPv + 67 (SharedTimerMac.mm:167)
8 com.apple.CoreFoundation 0x00007fff84dcaf84 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20
9 com.apple.CoreFoundation 0x00007fff84dcaad6 __CFRunLoopDoTimer + 534
10 com.apple.CoreFoundation 0x00007fff84dab471 __CFRunLoopRun + 1617
11 com.apple.CoreFoundation 0x00007fff84daaae6 CFRunLoopRunSpecific + 230
12 com.apple.HIToolbox 0x00007fff897253d3 RunCurrentEventLoopInMode + 277
13 com.apple.HIToolbox 0x00007fff8972c63d ReceiveNextEventCommon + 355
14 com.apple.HIToolbox 0x00007fff8972c4ca BlockUntilNextEventMatchingListInMode + 62
15 com.apple.AppKit 0x00007fff8cb3e3f1 _DPSNextEvent + 659
16 com.apple.AppKit 0x00007fff8cb3dcf5 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 135
17 com.apple.AppKit 0x00007fff8cb3a62d -[NSApplication run] + 470
18 com.apple.WebCore 0x00000001115fab4c WebCore::RunLoop::run() + 92 (RunLoopMac.mm:101)
19 com.apple.WebKit2 0x000000010e912ee4 WebKit::WebProcessMain(WebKit::CommandLine const&) + 3556 (WebProcessMainMac.mm:176)
20 com.apple.WebKit2 0x000000010e81e76f _ZL10WebKitMainRKN6WebKit11CommandLineE + 239 (WebKitMain.cpp:50)
21 com.apple.WebKit2 0x000000010e81e652 WebKitMain + 178 (WebKitMain.cpp:74)
22 com.apple.WebProcess 0x000000010e447d82 main + 290
23 com.apple.WebProcess 0x000000010e447c54 start + 52
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