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Re: [PATCH 1/9] Add vectorized getenv for glibc use
- From: Roland McGrath <roland at hack dot frob dot com>
- To: Andi Kleen <andi at firstfloor dot org>
- Cc: Carlos O'Donell <carlos at redhat dot com>, Siddhesh Poyarekar <siddhesh at redhat dot com>, libc-alpha at sourceware dot org, Andi Kleen <ak at linux dot intel dot com>
- Date: Tue, 28 May 2013 19:17:58 -0700 (PDT)
- Subject: Re: [PATCH 1/9] Add vectorized getenv for glibc use
- References: <1368225725-14283-1-git-send-email-andi at firstfloor dot org> <1368225725-14283-2-git-send-email-andi at firstfloor dot org> <5191DFB8 dot 4030709 at redhat dot com> <20130528224920 dot 21C572C06F at topped-with-meat dot com> <20130529014956 dot GI6123 at two dot firstfloor dot org>
> FWIW, the "new" environment variables for lock elision have been posted
> over 6 months ago (without GLIBC_ prefix), and nobody found any security
> problems with them in all that time, because there aren't any (it's just an
> optimization hint)
This statement demonstrates a fundamental failure to understand the kind of
issue I raised. I've discussed it at length before.