[Pkg-utopia-maintainers] Bug#528145: Bug#528145: Bug#528145: dbus start script segmentation fault

[Michael Biebl]

clone 528145 -1
reassign -1 gcc-4.3
retitle -1 dbus-daemon segfaults on mips(el) when compiled/linked with pie
thanks

Aurelien Jarno wrote:
> On Mon, May 11, 2009 at 07:33:07PM +0200, Michael Biebl wrote:
>> Deng Xiyue wrote:
>>> Package: dbus
>>> Version: 1.2.14-2
>>> Severity: grave
>>>
>>> Dbus 1.2.14-2 failes to install due to start script segmentation fault,
>>> which makes it half-installed and unusable, hence severity grave.
>>> Relevant aptitude log as follow:
>>>
>> ..
>>> Starting system message bus: dbus/etc/init.d/dbus: line 89: 20246 Segmentation fault      start-stop-daemon --start --quiet --pidfile  --user  --exec  -- --system 
>> ..
>>> Architecture: mipsel (mips64)
>> I can confirm this problem on mips(el). It seems to be a toolchain issue on this
>> architectures:
>> 1.) The 1.2.12-1 package from the archive works fine. If I recompile it with a
>> current toolchain on sid, I the get same behaviour.
>> 2.) Compiling 1.2.14-2 with the lenny toolchain produces working binaries.
>>
>> I had a quick discussion with aurel on irc, which confirms that:
>>
>>> [16:56] <mbiebl> aurel32: around?
>>> [16:56] <aurel32> mbiebl: for a few seconds
>>> [16:56] <mbiebl> need your help with http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=528145
>>> [16:57] <mbiebl> looks like dbus-daemon is segfaulting on mipsen
>>> [16:57] <mbiebl> a backtrace only shows this
>>> [16:57] <mbiebl> [16:35] <mbiebl> (gdb) run
>>> [16:57] <mbiebl> [16:35] <mbiebl> Starting program: /root/dbus/bus/dbus-daemon 
>>> [16:57] <mbiebl> [16:35] <mbiebl> Program received signal SIGSEGV, Segmentation fault.
>>> [16:57] <mbiebl> [16:35] <mbiebl> 0x2aab55e8 in ?? () from /lib/ld.so.1
>>> [16:57] <mbiebl> [16:35] <mbiebl> (gdb) bt full
>>> [16:57] <mbiebl> [16:35] <mbiebl> #0  0x2aab55e8 in ?? () from /lib/ld.so.1
>>> [16:58] <Manoj> Hmm. I take it back. I don't seem to have a .pc file there
>>> [16:58] <mbiebl> aurel32: interesting fact is, if I recompile dbus 1.2.12-1 on a up-to-date sid mips system
>>> [16:58] <mbiebl> it also segfaults
>>> [16:58] <mbiebl> whereas the package from the archive works
>>> [16:58] <mrvn> mbiebl: toolchain bug?
>>> [16:59] <mbiebl> almost looks like
>>> [16:59] <aurel32> mbiebl: I'll try to have a look, but I probably won't have time until a few days
>>> [16:59] <aurel32> but it looks like a toolchain bug yes
>>> [16:59] <mbiebl> aurel32: thanks
>>> [16:59] <mbiebl> please keep me posted
> 
> The problem appears as dbus is creating dbus-daemon as a broken pie
> binary. Disabling -pie workaround the problem. I don't know yet what has
> introduced this regression though.
> 

I'm cloning the bug for gcc, because this is (one of) the packages of the build
toolchain that was updated between the 1.2.12-1 and 1.2.14-2 build of dbus. The
last upload of binutils was before dbus 1.2.12-1, and this binary was still working.



The following note in the build log [1] might be related:


dh_shlibdeps -pdbus
BFD: debian/dbus/usr/bin/dbus-daemon(.rel.dyn): relocation 164 has invalid
symbol index 0
BFD: debian/dbus/usr/bin/dbus-daemon(.rel.dyn): relocation 165 has invalid
symbol index 0
dh_installdeb -pdbus-x11

Cheers,
Michael

[1]https://buildd.debian.org/fetch.cgi?&pkg=dbus&ver=1.2.14-2&arch=mips&stamp=1241828838&file=log
-- 
Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?

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