Re: [Ekiga-devel-list] OPAL fqails to build

[Damien Sandras <dsandras seconix com>]

Le mercredi 18 octobre 2006 à 12:21 +0200, Damien Sandras a écrit :
> Le mercredi 18 octobre 2006 à 20:15 +1000, Craig Southeren a écrit :
> > On Wed, 18 Oct 2006 09:47:02 +0200
> > Damien Sandras <dsandras seconix com> wrote:
> > 
> > > Le mercredi 18 octobre 2006 à 09:53 +1000, Craig Southeren a écrit :
> > > > On Tue, 17 Oct 2006 18:49:57 +0200
> > > > Jan Schampera <jan schampera web de> wrote:
> > > > 
> > > > > On Tue, 17 Oct 2006 17:03:27 +0200
> > > > > Damien Sandras <dsandras seconix com> wrote:
> > > > > 
> > > > > > > Attached is the error output of an OPAL build. Configure params were
> > > > > > > --enable-localspeex and --disable-lid.
> > > > > > > 
> > > > > > 
> > > > > > I told Simon. He did an update on opalplugin.h 2 hours ago to fix the
> > > > > > problem. I have not tested.
> > > > > 
> > > > > The most recent commit was done exactly where it fails, but it still
> > > > > doesn't build (same error) :/
> > > > > 
> > > > > I'm OPAL-less now ;)
> > > > 
> > > > I've fixed the compile problem - still looking for the crash problem
> > > 
> > > 
> > > The crash problem seems to be fixed.
> > 
> > Is this with v1.162 of tlibthrd.cxx ?
> 
> Yes, it seems to be fixed.
> 
> I am not 100% sure yet, but I couldn't reproduce any crash during my
> tests.

I can now reproduce it again :
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1245885520 (LWP 11840)]
0xb75ff2d9 in PThread::PXBlockOnIO ()
   from /home/damien/CVS/pwlib/lib/libpt_linux_x86_r.so.1.11.2
(gdb) bt
#0  0xb75ff2d9 in PThread::PXBlockOnIO ()
   from /home/damien/CVS/pwlib/lib/libpt_linux_x86_r.so.1.11.2
#1  0xb75f4944 in PChannel::PXSetIOBlock ()
   from /home/damien/CVS/pwlib/lib/libpt_linux_x86_r.so.1.11.2
#2  0xb75efd9a in PSocket::os_recvfrom ()
   from /home/damien/CVS/pwlib/lib/libpt_linux_x86_r.so.1.11.2
#3  0xb7607fc9 in PIPDatagramSocket::ReadFrom ()
   from /home/damien/CVS/pwlib/lib/libpt_linux_x86_r.so.1.11.2
#4  0xb760803a in PUDPSocket::Read ()
   from /home/damien/CVS/pwlib/lib/libpt_linux_x86_r.so.1.11.2
#5  0xb75f3fc5 in PIndirectChannel::Read ()
   from /home/damien/CVS/pwlib/lib/libpt_linux_x86_r.so.1.11.2
#6  0xb6e76646 in OpalTransportUDP::Read ()
   from /home/damien/CVS/opal/lib/libopal_linux_x86_r.so.2.3
#7  0xb75f6155 in PChannelStreamBuffer::underflow ()
   from /home/damien/CVS/pwlib/lib/libpt_linux_x86_r.so.1.11.2
#8  0xb75f5ea8 in PChannelStreamBuffer::seekoff ()
   from /home/damien/CVS/pwlib/lib/libpt_linux_x86_r.so.1.11.2
#9  0xb6a8426a in std::basic_streambuf<char, std::char_traits<char>
>::pubseekoff () from /usr/lib/libstdc++.so.6
#10 0xb71963c0 in SIP_PDU::Read ()
   from /home/damien/CVS/opal/lib/libopal_linux_x86_r.so.2.3
#11 0xb7174aa1 in SIPEndPoint::HandlePDU ()
   from /home/damien/CVS/opal/lib/libopal_linux_x86_r.so.2.3
#12 0xb71749b8 in SIPEndPoint::TransportThreadMain ()
   from /home/damien/CVS/opal/lib/libopal_linux_x86_r.so.2.3
#13 0xb717ec78 in SIPEndPoint::TransportThreadMain_PNotifier::Call ()
   from /home/damien/CVS/opal/lib/libopal_linux_x86_r.so.2.3
#14 0xb760ef29 in PSimpleThread::Main ()
   from /home/damien/CVS/pwlib/lib/libpt_linux_x86_r.so.1.11.2
#15 0xb75fd3df in PThread::PX_ThreadStart ()
   from /home/damien/CVS/pwlib/lib/libpt_linux_x86_r.so.1.11.2
#16 0xb6addced in start_thread () from /lib/tls/libpthread.so.0
#17 0xb6961dee in clone () from /lib/tls/libc.so.6


The fix is to add the check I sent you by e-mail last time, but it is
more a workaround than a real fix for the real problem.

The problem is that blockedThread is sometimes set to NULL when
calling :
  int stat = blockedThread->PXBlockOnIO(os_handle, type, timeout);


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