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Re: Versioned symbols in elfutils and uClibc
- From: Max Filippov <jcmvbkbc at gmail dot com>
- To: elfutils-devel at lists dot fedorahosted dot org
- Date: Wed, 29 Apr 2015 03:29:39 +0300
- Subject: Re: Versioned symbols in elfutils and uClibc
On Tue, Apr 28, 2015 at 8:34 PM, Mark Wielaard <mjw@redhat.com> wrote:
> On Mon, Apr 27, 2015 at 05:12:01AM +0300, Max Filippov wrote:
>> So, I've switched to the pristine sources from git and forward-ported
>> series pointed to by Anthony and now the results are the following:
>>
>> # TOTAL: 134
>> # PASS: 116
>> # SKIP: 7
>> # XFAIL: 0
>> # FAIL: 11
>> # XPASS: 0
>> # ERROR: 0
>>
>> The log is attached. I'll take a look at the segfaults.
>
>> FAIL: run-strip-reloc.sh
>> ========================
>>
>> *** failure --reloc-debug-sections not smaller /home/jcmvbkbc/ws/tensilica/elfutils/elfutils-0.161/src/strip.o
>> FAIL run-strip-reloc.sh (exit status: 1)
>>
>> FAIL: run-elflint-self.sh
>> =========================
>>
>> invalid machine flags: 0x300
>> section [ 7] '.rela.dyn': relocation 0: invalid type
>> [...]
>> section [17] '.dynamic': entry 19: unknown tag
>> section [17] '.dynamic': entry 20: unknown tag
>> section [35] '.symtab': _GLOBAL_OFFSET_TABLE_ symbol refers to section [ 9] '.text'
>
> These kind of failures often indicate that the backend code couldn't
> be loaded for the ELF file. Which architecture is this? What is the
> ELF EM machine type of the file? Does ebl openbackend () find the correct
> shared library to dlopen?
It's Tensilica Xtensa, EM_XTENSA, 94.
openbackend couldn't dlopen libebl_xtensa.so because
there's no such file.
>> FAIL: run-backtrace-native.sh
>> =============================
>>
>> /home/jcmvbkbc/ws/tensilica/elfutils/elfutils-0.161/tests/backtrace: backtrace.c: 346: exec_dump: Assertion `((((__extension__ (((union { __typeof(status) __in; int __i; }) { .__in = (status) }).__i))) & 0xff) == 0x7f)' failed.
>> ./test-subr.sh: line 84: 2886 Aborted LD_LIBRARY_PATH="${built_library_path}${LD_LIBRARY_PATH:+:}$LD_LIBRARY_PATH" $VALGRIND_CMD "$@"
>> backtrace-child: no main
>> FAIL run-backtrace-native.sh (exit status: 1)
>
> That is strange. waitpid () returned something we didn't expect.
I'll take a look.
>> FAIL: run-stack-d-test.sh
>> =========================
>>
>> --- stack.out
>> +++ -
>> @@ -1,5 +1,5 @@
>> PID 13654 - core
>> TID 13654:
>> -#0 0x00000000004006c8 _Z2fui
>> +#0 0x00000000004006c8 fu(int)
>> #1 0x00000000004004c5 main
>> /home/jcmvbkbc/ws/tensilica/elfutils/elfutils-0.161/src/stack: tid 13654: shown max number of frames (2, use -n 0 for unlimited)
>> FAIL run-stack-d-test.sh (exit status: 1)
>
> This might be a testsuite bug.
> I assume the configure check for __cxa_demangle failed because you
> don't have libstdc++ installed. Then some tools will not be able to
> demangle (C++) symbols. We should fix the test to SKIP in that case.
Correct. After installing libstdc++ and rebuilding these two tests pass.
>> #1 0x00000000004006c8 foobar
>> #2 0x00000000004006c8 bar
>> #3 0x00000000004006c8 foo
>> -#4 0x00000000004006c8 _Z2fui
>> +#4 0x00000000004006c8 fu(int)
>> #5 0x00000000004004c5 main
>> /home/jcmvbkbc/ws/tensilica/elfutils/elfutils-0.161/src/stack: tid 13654: shown max number of frames (6, use -n 0 for unlimited)
>> FAIL run-stack-i-test.sh (exit status: 1)
>
> Likewise.
--
Thanks.
-- Max