Bug 256470 – Crash in PDFDocument::sendPDFArrayBuffer

• Status: RESOLVED
• Resolution: FIXED
• Component: PDF

[Michael Catanzaro]

Created attachment 466282 [details]
Full backtrace

This null pointer dereference occurred when refreshing a PDF document, but I'm not able to reproduce it:

#0  WebCore::FragmentedSharedBuffer::size (this=0x0)
    at /home/mcatanzaro/Projects/WebKit/Source/WebCore/platform/SharedBuffer.h:179
#1  WebCore::FragmentedSharedBuffer::tryCreateArrayBuffer (this=0x0)
    at /home/mcatanzaro/Projects/WebKit/Source/WebCore/platform/SharedBuffer.cpp:198
#2  0x00007f9f9d3b90bb in WebCore::PDFDocument::sendPDFArrayBuffer (this=0x7f9f25110800)
    at /home/mcatanzaro/Projects/WebKit/Source/WebCore/html/PDFDocument.cpp:210
#3  0x00007f9f9d5fff63 in WebCore::FrameLoader::stop (this=0x7f9f7d0704e0)
    at /home/mcatanzaro/Projects/WebKit/Source/WebCore/loader/FrameLoader.cpp:587
#4  WebCore::FrameLoader::receivedMainResourceError (this=0x7f9f7d0704e0, error=...)
    at /home/mcatanzaro/Projects/WebKit/Source/WebCore/loader/FrameLoader.cpp:3343
#5  0x00007f9f9d5d0a92 in WebCore::DocumentLoader::cancelMainResourceLoad (this=this@entry=0x7f9f25c3ec00, 
    resourceError=...) at /home/mcatanzaro/Projects/WebKit/Source/WebCore/loader/DocumentLoader.cpp:2296
#6  0x00007f9f9d5d0433 in WebCore::DocumentLoader::stopLoading (this=0x7f9f25c3ec00)
    at /home/mcatanzaro/Projects/WebKit/Source/WebCore/loader/DocumentLoader.cpp:396
#7  0x00007f9f9d5fc0c6 in WebCore::FrameLoader::stopAllLoaders (this=0x7f9f7d0704e0, 
    clearProvisionalItem=<optimized out>, 
    stopLoadingPolicy=stopLoadingPolicy@entry=WebCore::StopLoadingPolicy::PreventDuringUnloadEvents)
    at /home/mcatanzaro/Projects/WebKit/Source/WebCore/loader/FrameLoader.cpp:1907
#8  0x00007f9f9d5fc4de in WebCore::FrameLoader::stopForUserCancel (this=0x7ffc35e65c80, deferCheckLoadComplete=false)
    at /home/mcatanzaro/Projects/WebKit/Source/WebCore/loader/FrameLoader.cpp:1966
#9  0x00007f9f9c2aa941 in WebKit::WebPage::stopLoading (this=0x7f9f7d0ac730)
    at /home/mcatanzaro/Projects/WebKit/Source/WebKit/WebProcess/WebPage/WebPage.cpp:1967
#10 0x00007f9f9bd4d210 in _ZZN3IPC18callMemberFunctionIN6WebKit7WebPageES2_FvvESt5tupleIJEEEEvPT_MT0_T1_OT2_ENKUlDpOT_E_clIJEEEDaSF_ (this=<optimized out>)
    at /home/mcatanzaro/Projects/WebKit/Source/WebKit/Platform/IPC/HandleMessage.h:136

[Michael Catanzaro]

This backtrace is taken with 263802@main

[Michael Catanzaro]

Pull request: https://github.com/WebKit/WebKit/pull/13583

[Radar WebKit Bug Importer]

<rdar://problem/109358135>

[EWS]

Committed 264114@main (5dd594fd96bb): <https://commits.webkit.org/264114@main>

Reviewed commits have been landed. Closing PR #13583 and removing active labels.