uclibc segfault in ldso
Joakim Tjernlund
joakim.tjernlund at transmode.se
Fri Mar 28 08:20:00 UTC 2008
On Thu, 2008-03-27 at 22:17 +0000, Nigel Kukard wrote:
> Hi,
>
> > > > > This trace looks like it is missing LD_DEBUG=1 rpm or LD_DEBUG=all rpm,
> > > > > such a trace can get very big so you need to trim it down before
> > > > > posting. You also need SUPPORT_LD_DEBUG=y in .config
> > > >
> > > > Stupid busybox, it didn't export the env variable .... I'm rebuilding a
> > > > static sh now.
> > > >
> > > > Uploaded RPM debug to ... http://www.linuxrulz.org/nkukard/rpm.log
> > > >
> > > > Uploaded my test PIE app to ... http://www.linuxrulz.org/nkukard/rpm.log
> > > >
> > >
> > > http://www.linuxrulz.org/nkukard/rpm.readelf
> > >
> > > Here is a readelf -a from the host system on the target system rpm.
> > >
> > > -N
> >
> > hmm, this looks fishy:
> > 1: 00000000 210 FUNC GLOBAL DEFAULT UND rpmcliFini at LIBRPM_0 (2)
> > 2: 00000000 22 FUNC GLOBAL DEFAULT UND rpmFreeSignature at LIBRPM_0 (2)
> > 3: 00000000 4 OBJECT GLOBAL DEFAULT UND hdrVec at LIBRPMDB_0 (3)
> > 4: 00000000 58 FUNC GLOBAL DEFAULT UND freeStringBuf at LIBRPM_0 (2)
> > 5: 00000000 454 FUNC GLOBAL DEFAULT UND rpmcliQuery at LIBRPM_0 (2)
> > 6: 00000000 1484 OBJECT GLOBAL DEFAULT UND rpmInstallPoptTable at LIBRPM_0 (2)
> > 7: 00000000 281 FUNC GLOBAL DEFAULT UND rpmcliSign at LIBRPM_0 (2)
> > 8: 00000000 102 FUNC GLOBAL DEFAULT UND xstrdup at LIBRPMIO_0 (4)
> > ...
> >
> > You got GNU ldso symbol version stuff in there. I think you should get rid of
> > that first.
> >
>
> Fixed.
>
> Updated the below logs:
> RPM debug ... http://www.linuxrulz.org/nkukard/rpm.log
> test PIE app ... http://www.linuxrulz.org/nkukard/test.log
> RPM readelf ... http://www.linuxrulz.org/nkukard/rpm.readelf
>
Can't see anything, I think you should add printouts in __uClibc_init()
to see if you get there, use the write() sys call as I don't think you
can use any of the libc print functions.
Non PIE rpm works I guess?
Does rpm work in glibc, both PIE and non PIE?
Jocke
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