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SubjectRe: [PATCH] x86-64, vsyscalls: Rename UNSAFE_VSYSCALLS to COMPAT_VSYSCALLS

* pageexec@freemail.hu <pageexec@freemail.hu> wrote:

> On 7 Jun 2011 at 11:56, Ingo Molnar wrote:
>
> > Fedora was able to disable the fixed-address vdso in its newer 32-bit
> > distro kernels because it *upgraded glibc*.
>
> and what happened to those apps that users statically linked against
> the older glibc? what happened to their chroots that had dynamically
> linked binaries with an older glibc? did you not break those either?

There's two reasons why a distributor will generally not worry about
that case:

- No such binaries come with a default distro install

- Keeping such old libraries linked or chrooted can be a security
hole in itself, so i dou guarantee something like this.

If another distribution considers this a serious enough issue it can
keep the COMPAT_VDSO option enabled forever. Few (none?) did.

Thanks,

Ingo


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