Re: Newer hwcap failures

[Adhemerval Zanella <adhemerval.zanella@linaro.org>]

On 28/01/2021 17:21, Adhemerval Zanella wrote:
> 
> 
> On 28/01/2021 17:01, Adhemerval Zanella wrote:
>>
>>
>> On 28/01/2021 16:53, Florian Weimer wrote:
>>> * Adhemerval Zanella:
>>>
>>>> Debugging the tst-ldconfig-ld_so_conf-update it seems that for some
>>>> reason ldconfig is not updating the search path. Modifying the testcase
>>>> to print the dlerror:
>>>>
>>>> dlopen (libldconfig-ld-mod.so): libldconfig-ld-mod.so: cannot open shared object file: No such file or directory
>>>>
>>>> I am trying to run strace on the container environment, but it seems
>>>> that it gets confused (it triggers a failure in the rename call).
>>>>
>>>> Any idea?
>>>
>>> Do you use any special compiler flags?  We have a report of ISA level
>>> property notes showing up unexpectedly:
>>>
>>>   <https://sourceware.org/pipermail/libc-help/2021-January/005648.html>
>>>
>>> I don't think this test has been adjusted to this new feature, it will
>>> only work if the objects have no markup.
>>
>> This is failing on powerpc32 as well with the same error, so I am not sure
>> this is really related to the ISA level property notes.
> 
> The libldconfig-ld-mod.so is indeed listed on the cache, as indicated by
> a 'ldconfig -p' after the final 'ldconfig' onelf/tst-ldconfig-ld_so_conf-update.c:
> 
> 37 libs found in cache `/etc/ld.so.cache'
>         libutil.so.1 (libc6, OS ABI: Linux 3.2.0) => /lib/libutil.so.1
>         libutil.so (libc6, OS ABI: Linux 3.2.0) => /usr/lib/libutil.so
>         libthread_db.so.1 (libc6, OS ABI: Linux 3.2.0) => /lib/libthread_db.so.1
>         libthread_db.so (libc6, OS ABI: Linux 3.2.0) => /usr/lib/libthread_db.so
>         librt.so.1 (libc6, OS ABI: Linux 3.2.0) => /lib/librt.so.1
>         librt.so (libc6, OS ABI: Linux 3.2.0) => /usr/lib/librt.so
>         libresolv.so.2 (libc6, OS ABI: Linux 3.2.0) => /lib/libresolv.so.2
>         libresolv.so (libc6, OS ABI: Linux 3.2.0) => /usr/lib/libresolv.so
>         libpthread.so.0 (libc6, OS ABI: Linux 3.2.0) => /lib/libpthread.so.0
>         libpthread.so (libc6, OS ABI: Linux 3.2.0) => /usr/lib/libpthread.so
>         libpcprofile.so (libc6, OS ABI: Linux 3.2.0) => /lib/libpcprofile.so
>         libnss_hesiod.so.2 (libc6, OS ABI: Linux 3.2.0) => /lib/libnss_hesiod.so.2
>         libnss_hesiod.so (libc6, OS ABI: Linux 3.2.0) => /usr/lib/libnss_hesiod.so
>         libnss_files.so.2 (libc6, OS ABI: Linux 3.2.0) => /lib/libnss_files.so.2
>         libnss_files.so (libc6, OS ABI: Linux 3.2.0) => /usr/lib/libnss_files.so
>         libnss_dns.so.2 (libc6, OS ABI: Linux 3.2.0) => /lib/libnss_dns.so.2
>         libnss_dns.so (libc6, OS ABI: Linux 3.2.0) => /usr/lib/libnss_dns.so
>         libnss_db.so.2 (libc6, OS ABI: Linux 3.2.0) => /lib/libnss_db.so.2
>         libnss_db.so (libc6, OS ABI: Linux 3.2.0) => /usr/lib/libnss_db.so
>         libnss_compat.so.2 (libc6, OS ABI: Linux 3.2.0) => /lib/libnss_compat.so.2
>         libnss_compat.so (libc6, OS ABI: Linux 3.2.0) => /usr/lib/libnss_compat.so
>         libnsl.so.1 (libc6, OS ABI: Linux 3.2.0) => /lib/libnsl.so.1
>         libmemusage.so (libc6, OS ABI: Linux 3.2.0) => /lib/libmemusage.so
>         libm.so.6 (libc6, OS ABI: Linux 3.2.0) => /lib/libm.so.6
>         libm.so (libc6, OS ABI: Linux 3.2.0) => /usr/lib/libm.so
>         libldconfig-ld-mod.so (libc6, OS ABI: Linux 3.2.0) => /tmp/tst-ldconfig/libldconfig-ld-mod.so
>         libdl.so.2 (libc6, OS ABI: Linux 3.2.0) => /lib/libdl.so.2
>         libdl.so (libc6, OS ABI: Linux 3.2.0) => /usr/lib/libdl.so
>         libcrypt.so.1 (libc6, OS ABI: Linux 3.2.0) => /lib/libcrypt.so.1
>         libcrypt.so (libc6, OS ABI: Linux 3.2.0) => /usr/lib/libcrypt.so
>         libc.so.6 (libc6, OS ABI: Linux 3.2.0) => /lib/libc.so.6
>         libanl.so.1 (libc6, OS ABI: Linux 3.2.0) => /lib/libanl.so.1
>         libanl.so (libc6, OS ABI: Linux 3.2.0) => /usr/lib/libanl.so
>         libSegFault.so (libc6, OS ABI: Linux 3.2.0) => /lib/libSegFault.so
>         libBrokenLocale.so.1 (libc6, OS ABI: Linux 3.2.0) => /lib/libBrokenLocale.so.1
>         libBrokenLocale.so (libc6, OS ABI: Linux 3.2.0) => /usr/lib/libBrokenLocale.so
>         ld-linux.so.2 (ELF) => /lib/ld-linux.so.2
> 
> However the dlopen is not considering it on search path, as indicated by
> LD_DEBUG=all just before the dlopen failure:
> 
>          1:     file=libldconfig-ld-mod.so [0];  dynamically loaded by /xxx/i686-linux-gnu/elf/tst-ldconfig-ld_so_conf-update [0]
>          1:     find library=libldconfig-ld-mod.so [0]; searching
>          1:      search cache=/etc/ld.so.cache
>          1:      search path=/lib:/usr/lib              (system search path)
>          1:       trying file=/lib/libldconfig-ld-mod.so
>          1:       trying file=/usr/lib/libldconfig-ld-mod.so
> 
> I am not sure why yet.

From my testings, I am seeing this issue on hppa, powerpc32 hardfloat, i686, and armhf.