RESOLVED FIXED188170
Potential null dereference under WebPage::applicationDidBecomeActive() 
https://bugs.webkit.org/show_bug.cgi?id=188170
Summary Potential null dereference under WebPage::applicationDidBecomeActive()
Chris Dumez
Reported 2018-07-30 09:07:01 PDT
Potential null dereference under WebPage::applicationDidBecomeActive(): Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000070 Termination Signal: Segmentation fault: 11 Termination Reason: Namespace SIGNAL, Code 0xb Terminating Process: exc handler [0] Triggered by Thread: 0 Thread 0 name: Dispatch queue: com.apple.main-thread Thread 0 Crashed: 0 WebCore 0x000000018b32ab6c WebCore::Page::applicationDidBecomeActive() + 44 (DumbPtrTraits.h:41) 1 WebCore 0x000000018b32ab58 WebCore::Page::applicationDidBecomeActive() + 24 (Function.h:83) 2 WebKit 0x0000000191b937fc IPC::MessageReceiverMap::dispatchMessage(IPC::Connection&, IPC::Decoder&) + 120 (MessageReceiverMap.cpp:0) 3 WebKit 0x0000000191dad534 WebKit::WebProcess::didReceiveMessage(IPC::Connection&, IPC::Decoder&) + 36 (WebProcess.cpp:645) 4 WebKit 0x0000000191b56b48 IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >) + 164 (Connection.cpp:901) 5 WebKit 0x0000000191b59538 IPC::Connection::dispatchOneMessage() + 232 (Connection.cpp:959) 6 JavaScriptCore 0x0000000189849914 WTF::RunLoop::performWork() + 348 (Function.h:56) 7 JavaScriptCore 0x0000000189849b84 WTF::RunLoop::performWork(void*) + 36 (RunLoopCF.cpp:38) 8 CoreFoundation 0x0000000181a619e4 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 24 (CFRunLoop.c:1982) 9 CoreFoundation 0x0000000181a612c0 __CFRunLoopDoSources0 + 456 (CFRunLoop.c:2017) 10 CoreFoundation 0x0000000181a5ed7c __CFRunLoopRun + 1204 (CFRunLoop.c:2920) 11 CoreFoundation 0x000000018197f488 CFRunLoopRunSpecific + 552 (CFRunLoop.c:3245) 12 Foundation 0x00000001823f6004 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 304 (NSRunLoop.m:367) 13 Foundation 0x0000000182447c6c -[NSRunLoop(NSRunLoop) run] + 88 (NSRunLoop.m:389) 14 libxpc.dylib 0x000000018172bbdc _xpc_objc_main + 516 (main.m:167) 15 libxpc.dylib 0x000000018172dcb0 xpc_main + 180 (init.c:1476) 16 com.apple.WebKit.WebContent 0x00000001001f35ac main + 380 (XPCServiceMain.mm:148) 17 libdyld.dylib 0x000000018141dfc0 start + 4
Attachments
Patch (2.63 KB, patch)
2018-07-30 09:08 PDT, Chris Dumez 		no flags
DetailsFormatted DiffDiff
View All Add attachment proposed patch, testcase, etc.
Chris Dumez
Comment 1 2018-07-30 09:07:14 PDT
<rdar://problem/37493418>
Chris Dumez
Comment 2 2018-07-30 09:08:55 PDT
Created attachment 346062 [details] Patch
WebKit Commit Bot
Comment 3 2018-07-30 09:50:48 PDT
Comment on attachment 346062 [details] Patch Clearing flags on attachment: 346062 Committed r234369: <https://trac.webkit.org/changeset/234369>
WebKit Commit Bot
Comment 4 2018-07-30 09:50:49 PDT
All reviewed patches have been landed. Closing bug.
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