Re: [PATCH glibc 5/9] glibc: Perform rseq(2) registration at C startup and thread creation (v17)

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----- On Apr 28, 2020, at 8:35 AM, Florian Weimer fw@xxxxxxxxxxxxx wrote:

> * Mathieu Desnoyers:
> 
>> One issue I'm currently facing when running "make check": because
>> nptl/tst-rseq-nptl.c uses pthread_cancel(), I run into an Abort
>> with:
>>
>> libgcc_s.so.1 must be installed for pthread_cancel to work
>> Didn't expect signal from child: got `Aborted'
> 
> This is really unusual.  Is the affected test statically linked?

I built glibc without specifying anything particular, and ran
"make check". It indeed seems to be dynamically linked to libc:

ldd tst-rseq-nptl
./tst-rseq-nptl: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.32' not found (required by ./tst-rseq-nptl)
linux-vdso.so.1 (0x00007ffd3a2f3000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f0527560000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f052716f000)
/home/efficios/glibc-test5/lib/ld-linux-x86-64.so.2 => /lib64/ld-linux-x86-64.so.2 (0x00007f0527986000)

After make check I have:

cat tst-rseq-nptl.test-result 
FAIL: nptl/tst-rseq-nptl
original exit status 134

And if I run

./tst-rseq-nptl

Then I get

libgcc_s.so.1 must be installed for pthread_cancel to work
Didn't expect signal from child: got `Aborted'
libgcc_s.so.1 must be installed for pthread_cancel to work
Aborted (core dumped)

Same result if I do ./testrun.sh nptl/tst-rseq-nptl

Thanks,

Mathieu

-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com



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