[Bug libc/21182] segfaults with glibc-2.25 on i686

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=21182

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |fweimer at redhat dot com
              Flags|                            |security-

--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to blog from comment #0)

> I tried to gather some more pieces of information together with one of the
> Void developers, but was not able to produce a more detailed backtrace. The
> last change in this function happened in git commit
> https://sourceware.org/git/?p=glibc.git;a=commit;
> h=23d27709a423aec32821e9a5198a10267107bae2 , I tried to revert that one and
> recompile glibc. This seems to resolve the issue at least one my machine.

I wonder if this is a known CPU erratum.  The new code sequence does not look
problematic to me; I don't think it invokes implementation-defined instruction
behavior.

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