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[Bug nptl/18729] x86: glibc-2.21 linked with application which uses pthread_rwlock_unlock on pre Haswell CPUs crashes because of TSX-NI usage
- From: "fweimer at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Thu, 20 Aug 2015 06:34:39 +0000
- Subject: [Bug nptl/18729] x86: glibc-2.21 linked with application which uses pthread_rwlock_unlock on pre Haswell CPUs crashes because of TSX-NI usage
- Auto-submitted: auto-generated
- References: <bug-18729-131 at http dot sourceware dot org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=18729
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to eladv6 from comment #2)
> Build gdb 7.9.1 for x86_64 with using a toolchain bootstrapped with
> glibc-2.21, e.g. :
>
> ../gdb-7.9.1/configure --host=x86_64-unknown-linux-gnu
> --target=x86_64-unknown-linux-gnu
> make
>
> Now run: ./gdb/gdb -batch -ex bt -p 1
> (or any other valid PID number)
I cannot reproduce this. I think I have the correct hardware, but my gdb build
probably does not match yours.
Can you run your gdb under valgrind --tool=helgrind? This will hopefully
reveal the locking issue. It might be in a system library.
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