Bug 183668 – ServiceWorkerClientFetch::didReceiveData should check for m_encodedDataLength

• Component: Service Workers
• Status: RESOLVED FIXED

[youenn fablet]

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   com.apple.JavaScriptCore      	0x000000011aaea1d4 WTFCrash + 36 (Assertions.cpp:271)
1   com.apple.WebKit              	0x0000000105458c31 WTF::RefPtr<WebCore::SharedBuffer, WTF::DumbPtrTraits<WebCore::SharedBuffer> >::releaseNonNull() + 81 (RefPtr.h:74)
2   com.apple.WebKit              	0x0000000105458b9e WebKit::ServiceWorkerClientFetch::didReceiveData(IPC::DataReference const&, long long)::$_1::operator()() const + 110 (ServiceWorkerClientFetch.cpp:173)
3   com.apple.WebKit              	0x0000000105458a99 WTF::Function<void ()>::CallableWrapper<WebKit::ServiceWorkerClientFetch::didReceiveData(IPC::DataReference const&, long long)::$_1>::call() + 25 (Function.h:101)
4   com.apple.JavaScriptCore      	0x000000011ab061cb WTF::Function<void ()>::operator()() const + 139 (Function.h:56)
5   com.apple.JavaScriptCore      	0x000000011ab29404 WTF::dispatchFunctionsFromMainThread() + 324 (MainThread.cpp:129)
6   com.apple.JavaScriptCore      	0x000000011ab2c5a1 WTF::timerFired(__CFRunLoopTimer*, void*) + 49 (MainThreadMac.mm:111)
7   com.apple.CoreFoundation      	0x00007fff9305be04 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20
8   com.apple.CoreFoundation      	0x00007fff9305ba93 __CFRunLoopDoTimer + 1075
9   com.apple.CoreFoundation      	0x00007fff9305b5ea __CFRunLoopDoTimers + 298
10  com.apple.CoreFoundation      	0x00007fff93052fc1 __CFRunLoopRun + 2081
11  com.apple.CoreFoundation      	0x00007fff93052544 CFRunLoopRunSpecific + 420
12  com.apple.HIToolbox           	0x00007fff925b1ebc RunCurrentEventLoopInMode + 240
13  com.apple.HIToolbox           	0x00007fff925b1cf1 ReceiveNextEventCommon + 432
14  com.apple.HIToolbox           	0x00007fff925b1b26 _BlockUntilNextEventMatchingListInModeWithFilter + 71
15  com.apple.AppKit              	0x00007fff90b48a54 _DPSNextEvent + 1120
16  com.apple.AppKit              	0x00007fff912c47ee -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 2796
17  com.apple.AppKit              	0x00007fff90b3d3db -[NSApplication run] + 926
18  com.apple.AppKit              	0x00007fff90b07e0e NSApplicationMain + 1237
19  libxpc.dylib                  	0x00007fffa8fe58c7 _xpc_objc_main + 775
20  libxpc.dylib                  	0x00007fffa8fe42e4 xpc_main + 494
21  com.apple.WebKit.WebContent   	0x0000000104df8145 main + 1189 (XPCServiceMain.mm:148)
22  libdyld.dylib                 	0x00007fffa8d8c235 start + 1

[youenn fablet]

Created attachment 335864 [details]
Patch

[youenn fablet]

This crash happens because ServiceWorkerClientFetch can call m_loader->didReceiveBuffer at two different places (IPC or completion handler for response check).
In which case, we free the buffer and set back m_encodedLength to zero.

[youenn fablet]

Created attachment 335882 [details]
Patch

[EWS Watchlist]

Comment on attachment 335882 [details]
Patch

Attachment 335882 [details] did not pass mac-wk2-ews (mac-wk2):
Output: http://webkit-queues.webkit.org/results/6970917

Number of test failures exceeded the failure limit.

[EWS Watchlist]

Created attachment 335895 [details]
Archive of layout-test-results from ews106 for mac-sierra-wk2

The attached test failures were seen while running run-webkit-tests on the mac-wk2-ews.
Bot: ews106  Port: mac-sierra-wk2  Platform: Mac OS X 10.12.6

[EWS Watchlist]

Comment on attachment 335882 [details]
Patch

Attachment 335882 [details] did not pass ios-sim-ews (ios-simulator-wk2):
Output: http://webkit-queues.webkit.org/results/6971035

Number of test failures exceeded the failure limit.

[EWS Watchlist]

Created attachment 335902 [details]
Archive of layout-test-results from ews126 for ios-simulator-wk2

The attached test failures were seen while running run-webkit-tests on the ios-sim-ews.
Bot: ews126  Port: ios-simulator-wk2  Platform: Mac OS X 10.12.6

[Chris Dumez]

Comment on attachment 335882 [details]
Patch

r- given test failures :)

[youenn fablet]

rdar://problem/38473926

[youenn fablet]

Created attachment 336129 [details]
Patch

[WebKit Commit Bot]

Comment on attachment 336129 [details]
Patch

Clearing flags on attachment: 336129

Committed r229774: <https://trac.webkit.org/changeset/229774>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.