NEW 235660
ASSERTION FAILED: m_pdfDocument under WebKit::PDFPlugin::installPDFDocument() 
https://bugs.webkit.org/show_bug.cgi?id=235660
Summary ASSERTION FAILED: m_pdfDocument under WebKit::PDFPlugin::installPDFDocument()
Ryan Haddad
Reported 2022-01-26 11:33:12 PST
Big Sur AppleSilicon Debug WK2 EWS bots seem to be frequently seeing an assertion failure attributed to fast/replaced/frame-removed-during-resize.html. This test is not crashing on trunk bots, so there is probably another test running before this one that is triggering this crash. CoreGraphics PDF has logged an error. Set environment variable "CG_PDF_VERBOSE" to learn more. ASSERTION FAILED: m_pdfDocument /Volumes/Data/worker/macOS-AppleSilicon-Big-Sur-Debug-Build-EWS/build/Source/WebKit/WebProcess/Plugins/PDF/PDFPlugin.mm(1663) : void WebKit::PDFPlugin::installPDFDocument() 1 0x13d1e889c WTFCrash 2 0x1040067c0 WebKit::Daemon::Decoder::~Decoder() 3 0x1044efcc0 WebKit::PDFPlugin::installPDFDocument() 4 0x1044ef81c WebKit::PDFPlugin::receivedNonLinearizedPDFSentinel() 5 0x10451b3d0 WebKit::PDFPlugin::receivedNonLinearizedPDFSentinel()::$_2::operator()() const 6 0x10451b2e4 WTF::Detail::CallableWrapper<WebKit::PDFPlugin::receivedNonLinearizedPDFSentinel()::$_2, void>::call() 7 0x13d21304c WTF::Function<void ()>::operator()() const 8 0x13d2a3f14 WTF::RunLoop::performWork() 9 0x13d2a8ce0 WTF::RunLoop::performWork(void*) 10 0x196376ad4 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ 11 0x196376a20 __CFRunLoopDoSource0 12 0x19637670c __CFRunLoopDoSources0 13 0x196375094 __CFRunLoopRun 14 0x1963745e8 CFRunLoopRunSpecific 15 0x19711d688 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] 16 0x1971afb70 -[NSRunLoop(NSRunLoop) run] 17 0x195feb768 _xpc_objc_main 18 0x195feaf94 xpc_main 19 0x1038fe1ec WebKit::XPCServiceMain(int, char const**) 20 0x1057a8a68 WKXPCServiceMain 21 0x1027bbe8c main 22 0x196295450 start com.apple.WebKit.WebContent.Development terminated (pid 1559) because the process crashed LEAK: 1 WebPageProxy https://ews-build.s3-us-west-2.amazonaws.com/macOS-AppleSilicon-Big-Sur-Debug-WK2-Tests-EWS/r450006-22209/results.html
Attachments
crash log (86.08 KB, text/plain)
2022-01-26 11:33 PST, Ryan Haddad 		no flags
Details
test list from crashing worker (310.90 KB, text/plain)
2022-01-26 12:30 PST, Ryan Haddad 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Ryan Haddad
Comment 1 2022-01-26 11:33:21 PST
Created attachment 450046 [details] crash log
Radar WebKit Bug Importer
Comment 2 2022-01-26 11:33:51 PST
<rdar://problem/88086949>
Ryan Haddad
Comment 3 2022-01-26 12:00:16 PST
Since my comment about this "not crashing on trunk bots" is admittedly vague, what I mean to say is that it is only happening on EWS, not on post-commit bots, which means it could be somehow related to the order in which tests are run since EWS skips tests that are known to fail.
Ryan Haddad
Comment 4 2022-01-26 12:30:34 PST
Created attachment 450056 [details] test list from crashing worker fast/replaced/encrypted-pdf-as-object-and-embed.html runs right before this test on the worker that crashes, so maybe that is related. Attaching the list of tests that run on the worker that crashes.
Ryan Haddad
Comment 5 2022-01-26 16:58:27 PST
Speculatively skipped fast/replaced/encrypted-pdf-as-object-and-embed.html in r288655 in an attempt to minimize false positives on EWS.
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