Re: segfaults

Mark Hounschell wrote:
> 
> "Howell, David P" wrote:
> >
> > One additional comment, if there is no /usr/lib/libpthread.so.0 symbolic
> > link to libpthread.so.22 you should be able to build it link and retry
> > your APP with the same script and it should work. As for why this wasn't
> > in the builds as is, a quick look shows that it's in the Makefile after
> > config but is missing from ngpt.spec, so building and installing from
> > the source tarball should work but building/installing the binary
> > packages will have this bug.
> >
> > I'll post a patch for this ASAP and get it in for the next release.
> >
> > Dave Howell
> >
> > These are my opinions and not official opinions of Intel Corp.
> >
> > David Howell
> > Intel Corporation
> > Telco Server Development
> > Server Products Division
> > Voice: (803) 461-6112  Fax: (803) 461-6292
> >
> > Intel Corporation
> > Columbia Design Center, CBA-2
> > 250 Berryhill Road, Suite 100
> > Columbia, SC 29210
> >
> > [email protected]
> >
> > -----Original Message-----
> > From: Howell, David P
> > Sent: Monday, January 13, 2003 9:17 AM
> > To: [email protected]; [email protected]
> > Subject: RE: [pthreads-users] segfaults
> >
> > >From the 'ldd v67' output, libpthread.so.0 was resolved to
> > /lib/libpthread.so.0 (Linuxthreads). As /usr/lib/libpthread.so.22 is
> > also included this will SEGFAULT (both NGPT and Linuxthreads in same
> > image).
> >
> > With the LD_LIBRARY_PATH and LD_PRELOAD this should have been
> > /usr/lib/libpthread.so.0 (NGPT), is there not a link in /usr/lib as
> > libpthread.so.0 to libpthread.so.22.0.20? This is what I would have
> > expected and would have resulted in a fully NGPT image.
> >
> > Dave Howell
> >
> > These are my opinions and not official opinions of Intel Corp.
> >
> > David Howell
> > Intel Corporation
> > Telco Server Development
> > Server Products Division
> > Voice: (803) 461-6112  Fax: (803) 461-6292
> >
> > Intel Corporation
> > Columbia Design Center, CBA-2
> > 250 Berryhill Road, Suite 100
> > Columbia, SC 29210
> >
> > [email protected]
> >
> > -----Original Message-----
> > From: Mark Hounschell [mailto:[email protected]]
> > Sent: Saturday, January 11, 2003 2:10 PM
> > To: [email protected]
> > Subject: [pthreads-users] segfaults
> >
> > I'm running a 2.4.20 kernel on a SuSE 8.1 box. The futex-2.4.19 patch
> > applied but had to make a couple changes by hand. No biggie. Built,
> > installed, then rebooted the new kernel after adding the
> > ngptinit command to my /etc/init.d/boot.local file and doing Then I did
> > the following:
> >
> > rpm -Uvh ngpt-2.2.0-1.src.rpm
> > rpm -ba /usr/src/packages/SPEC/ngpt.spec
> > rpm -Uvh --replacefiles
> > /usr/src/packages/RPMS/i386/ngpt-2.2.0-1.i386.rpm
> > rpm -Uvh --replacefiles
> > /usr/src/packages/RPMS/i386/ngpt-devel-2.2.0-1.i386.rpm
> >
> > I rebuilt the rpms because I wasn't sure what gcc rev was used. I wanted
> > to make sure it was with gcc-3.2.. I tried the original rpms first with
> > the same results as below.
> >
> > Reboot.......
> >
> > Then I recompiled my app. It compiled and linked ok.. Then I did..
> >
> > export LD_LIBARARY_PATH="/usr/lib:/lib:$LD_LIBARARY_PATH"
> > export LD_PRELOAD=libpthread.so.0
> >
> > Then I  ldd v67
> > harley:/home/markh/work/lcrs # ldd v67
> >         libpthread.so.0 => /lib/libpthread.so.0 (0x4002b000)
> >         libdl.so.2 => /lib/libdl.so.2 (0x40040000)
> >         libpthread.so.22 => /usr/lib/libpthread.so.22 (0x40043000)
> >         librt.so.1 => /lib/librt.so.1 (0x400f9000)
> >         libm.so.6 => /lib/libm.so.6 (0x4010a000)
> >         libc.so.6 => /lib/libc.so.6 (0x4012d000)
> >         /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000)

Ok, I figured out what I did wrong. I cut and pasted the intructions from the RELEASE notes.
They mis-spelled LD_LIBARARY_PATH....... See above... I also cut and pasted what I did into the mail.

I'll try this all again tomorrow.... Sorry...

Thanks
Mark

Mark