Bug#851412: FTBFS on mips*, tests fail with SIGSEGV

[YunQiang Su]

On Sun, Jan 15, 2017 at 1:15 AM, Michael Biebl <biebl at debian.org> wrote:
> Am 14.01.2017 um 18:02 schrieb Michael Biebl:
>
>> binutils_2.27.90.20170114-1. Building in stretch chroot though was
>> successful. So my observation is:
>>
>> binutils_2.27.90.20170114-1: fails
>> binutils_2.27.90.20170113-1: fails
>> binutils_2.27.51.20161220-1: ok
>>
>> So it looks like a mips related regression in binutils at a first
>> glance. In the past, systemd built reasonably reliably on mips* [3].
>
> A notable difference (aside from binutils) between the sid and stretch
> chroot is gcc-6, which is at version 6.2.1-5 in stretch and 6.3.0-2 in
> unstable.
> I couldn't test this combination (old binutils + new gcc) on the porter
> boxes though.
>

I tried to build a package libsystemd0-dbgsym, and test it with gdb,
it seems all binary linked with libsystemd will fail.

root at thor:/tmp# gdb /usr/bin/top
GNU gdb (Debian 7.12-4) 7.12
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Reading symbols from /usr/bin/top...(no debugging symbols found)...done.
(gdb) r
Starting program: /usr/bin/top
[Thread debugging using libthread_db enabled]
Using host libthread_db library
"/lib/mips64el-linux-gnuabi64/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
_IO_new_fclose (fp=0x1) at iofclose.c:48
48      iofclose.c: No such file or directory.
(gdb) bt
#0  _IO_new_fclose (fp=0x1) at iofclose.c:48
#1  0x000000fff7c96d28 in _init () from
/lib/mips64el-linux-gnuabi64/libsystemd.so.0
#2  0x000000fff7fdb9d0 in call_init (l=0xfff7fc4120,
argc=argc at entry=1, argv=argv at entry=0xfffffff5c8,
env=env at entry=0xfffffff5d8) at dl-init.c:58
#3  0x000000fff7fdbba8 in call_init (env=0xfffffff5d8,
argv=0xfffffff5c8, argc=1, l=<optimized out>) at dl-init.c:30
#4  _dl_init (main_map=0xfff7fff848, argc=<optimized out>,
argv=0xfffffff5c8, env=0xfffffff5d8) at dl-init.c:120
#5  0x000000fff7fca450 in _dl_start_user () from /lib64/ld.so.1
Backtrace stopped: frame did not save the PC


It seems that binutils generate bad shared lib.


> --
> Why is it that all of the instruments seeking intelligent life in the
> universe are pointed away from Earth?
>



-- 
YunQiang Su