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From Gary Gregory <garydgreg...@gmail.com>
Subject Re: GPF in WindowsNegotiateScheme.dispose()
Date Fri, 28 Aug 2015 17:41:55 GMT
On Fri, Aug 28, 2015 at 10:33 AM, Oleg Kalnichevski <olegk@apache.org>
wrote:

> On Fri, 2015-08-28 at 17:05 +0000, Alexander Bernstein wrote:
> > JNA people suggested I report this against Http Client. What should I
> do? Can you tell me where the defects should be submitted?
> > Thanks , Oleg
> >
>
> Really? What can we possibly do about GPF caused by native code in JNA?
> If we do something stupid on our end JNA should throw a meaningful
> exception telling us that we attempted to do something stupid.
>

But how could JNA know that a pointer passed to any API is bogus? I could
see that JNA's Win32 coverage of these APIs might be faulty though... We
need better unit tests perhaps.

Gary


>
> Oleg
>
> >       From: Oleg Kalnichevski <olegk@apache.org>
> >  To: Alexander Bernstein <alexbernstein1965@yahoo.com>
> > Cc: "httpclient-users@hc.apache.org" <httpclient-users@hc.apache.org>
> >  Sent: Thursday, August 27, 2015 4:18 AM
> >  Subject: Re: GPF in WindowsNegotiateScheme.dispose()
> >
> > On Wed, 2015-08-26 at 20:07 +0000, Alexander Bernstein wrote:
> >
> >
> > > Hello,
> > > I am new here, please pardon if this is not the right place for this
> kind of question.
> > > I am using httpclient-win-4.5 from httpClient 4.5 and
> jna-4.1.0/jna-platform-4.1.0 JNA libraries to authenticate to Kerberos
> server from Eclipse-based application.
> > > I create my client from WinHttpClients.custom(). The authentication is
> successful, but sooner or later, when JVM calls
> WindowsNegotiateScheme.dispose() my Eclipse crashes with GPF.
> > > I noticed that WindowsNegotiateSchemeFactory.create() is called twice,
> for some reason. Not sure if this is a normal flow and/or is relevant to
> the problem.
> > >
> > > 1XMCURTHDINFO  Current thread
> > > NULL          ----------------------
> > > 3XMTHREADINFO      "Finalizer thread" J9VMThread:0x0000000003FD1B00,
> j9thread_t:0x00000000050C1F10, java/lang/Thread:0x000007FFDE5E2800,
> state:R, prio=5
> > > 3XMJAVALTHREAD            (java/lang/Thread getId:0x15, isDaemon:true)
> > > 3XMTHREADINFO1            (native thread ID:0xCBC, native
> priority:0x5, native policy:UNKNOWN, vmstate:R, vm thread flags:0x00000000)
> > > 3XMTHREADINFO3          Java callstack:
> > > 4XESTACKTRACE                at com/sun/jna/Native.setPointer(Native
> Method)
> > > 4XESTACKTRACE                at
> com/sun/jna/Pointer.setPointer(Pointer.java:1195)
> > > 4XESTACKTRACE                at
> com/sun/jna/Memory.setPointer(Memory.java:658)
> > > 4XESTACKTRACE                at
> com/sun/jna/Pointer.setValue(Pointer.java:937)
> > > 4XESTACKTRACE                at
> com/sun/jna/Structure.writeField(Structure.java:800)
> > > 4XESTACKTRACE                at
> com/sun/jna/Structure.write(Structure.java:718(Compiled Code))
> > > 4XESTACKTRACE                at
> com/sun/jna/Structure.autoWrite(Structure.java:1923(Compiled Code))
> > > 4XESTACKTRACE                at
> com/sun/jna/Function.convertArgument(Function.java:505(Compiled Code))
> > > 4XESTACKTRACE                at
> com/sun/jna/Function.invoke(Function.java:297(Compiled Code))
> > > 4XESTACKTRACE                at
> com/sun/jna/Library$Handler.invoke(Library.java:212)
> > > 4XESTACKTRACE                at
> com/sun/proxy/$Proxy13.FreeCredentialsHandle(Bytecode PC:18)
> > > 4XESTACKTRACE                at
> org/apache/http/impl/auth/win/WindowsNegotiateScheme.dispose(WindowsNegotiateScheme.java:99)
> > > 4XESTACKTRACE                at
> org/apache/http/impl/auth/win/WindowsNegotiateScheme.finalize(WindowsNegotiateScheme.java:117)
> > > 4XESTACKTRACE                at
> java/lang/J9VMInternals.runFinalize(J9VMInternals.java:436)
> > > 3XMTHREADINFO3          No native callstack available on this platform
> > > NULL
> > > Appreciate any help and suggestions.Thank you
> > > Alex Bernstein
> >
> > No matter what we might be doing wrong on our end this still looks like
> > something that should not be happening.
> >
> > You probably should report the issue to JNA developers.
> >
> > https://github.com/java-native-access
> >
> > Oleg
> >
> >
> > ---------------------------------------------------------------------
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> >
> >
> >
> >
>
>
>
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>


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