Bug 260098

Summary:	Regression(266049@main) Crash in MIMETypeRegistry::preferredExtensionForMIMEType
Product:	WebKit	Reporter:	Ali Juma <ajuma>
Component:	Forms	Assignee:	Chris Dumez <cdumez>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	akeerthi, cdumez, heycam, webkit-bug-importer, wenson_hsieh
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified
See Also:	https://bugs.webkit.org/show_bug.cgi?id=258467

Ali Juma

Reported 2023-08-11 14:49:24 PDT

Chrome for iOS is getting a significant number of reports of a new crash in the latest iOS 17 seed (21A5303d). This is the top crash for users on that build. We don't have steps to reproduce, but based on the stack this appears to be a regression from https://bugs.webkit.org/show_bug.cgi?id=258467. 0x000000019a9ae2d8 (WebCore + 0x001b62d8) WTF::ASCIICaseInsensitiveHash::hash(WTF::StringImpl&) 0x000000019b31bd00 (WebCore + 0x00b23d00) WebCore::MIMETypeRegistry::preferredExtensionForMIMEType(WTF::String const&) 0x000000019c4cc218 (WebCore + 0x0000000001cd4218) WebCore::MIMETypeRegistry::appendFileExtensionIfNecessary(WTF::String const&, WTF::String const&) 0x000000019d88038c (WebKit + 0x006e238c) WebKit::DownloadProxy::decideDestinationWithSuggestedFilename(WebCore::ResourceResponse const&, WTF::String&&, WTF::CompletionHandler<void (WTF::String, WebKit::SandboxExtensionHandle, WebKit::AllowOverwrite)>&&) 0x000000019d20a630 (WebKit + 0x0006c630) WebKit::DownloadProxy::didReceiveMessage(IPC::Connection&, IPC::Decoder&) 0x000000019dc58fd8 (WebKit + 0x00abafd8) IPC::MessageReceiverMap::dispatchMessage(IPC::Connection&, IPC::Decoder&) 0x000000019d891fd4 (WebKit + 0x006f3fd4) WebKit::NetworkProcessProxy::didReceiveMessage(IPC::Connection&, IPC::Decoder&) 0x000000019dc54660 (WebKit + 0x00ab6660) IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >) 0x000000019dc57168 (WebKit + 0x00ab9168) WTF::Detail::CallableWrapper<IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_15, void>::call() 0x000000019de3d230 (JavaScriptCore + 0x00050230) WTF::RunLoop::performWork() 0x000000019de3e100 (JavaScriptCore + 0x00051100) WTF::RunLoop::performWork(void*) 0x00000001887bfb68 (CoreFoundation + 0x00037b68) __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ 0x00000001887bede4 (CoreFoundation + 0x00036de4) __CFRunLoopDoSource0 0x00000001887bd5f8 (CoreFoundation + 0x000355f8) __CFRunLoopDoSources0 0x00000001887bc2d4 (CoreFoundation + 0x000342d4) __CFRunLoopRun 0x00000001887bbeb4 (CoreFoundation + 0x00033eb4) CFRunLoopRunSpecific 0x00000001ca2585e8 (GraphicsServices + 0x000035e8) GSEventRunModal 0x000000018abd26b0 (UIKitCore + 0x0022f6b0) -[UIApplication _run] 0x000000018abd1cec (UIKitCore + 0x0022ecec) UIApplicationMain 0x00000001020877cc (Chrome -chrome_exe_main.mm:68) (anonymous namespace)::RunUIApplicationMain(int, char**) 0x00000001020877cc (Chrome -chrome_exe_main.mm:120) main 0x00000001aae3fd40 (dyld + 0x00005d40) start

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Add attachment proposed patch, testcase, etc.

Chris Dumez

Comment 1 2023-08-11 14:53:24 PDT

*** This bug has been marked as a duplicate of bug 259622 ***

Chris Dumez

Comment 2 2023-08-11 14:54:45 PDT

Actually may be slightly different, un-duping.

Radar WebKit Bug Importer

Comment 3 2023-08-11 15:23:08 PDT

<rdar://problem/113774128>

Chris Dumez

Comment 4 2023-08-11 15:43:19 PDT

Pull request: https://github.com/WebKit/WebKit/pull/16626

EWS

Comment 5 2023-08-11 17:00:43 PDT

Committed 266837@main (97c1b7fd0b15): <https://commits.webkit.org/266837@main> Reviewed commits have been landed. Closing PR #16626 and removing active labels.

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