> What does NOVSYSCALL do? I doubt it disables the vsyscall properly if
> glibc is trying to use the in-kernel signal trampoline. Glibc CVS does
> this:
> if (GLRO(dl_sysinfo_dso) == NULL)
> {
> kact.sa_flags |= SA_RESTORER;
>
> kact.sa_restorer = ((act->sa_flags & SA_SIGINFO)
> ? &restore_rt : &restore);
> }
>
> Debian glibc does this:
>
> +# if __ASSUME_VSYSCALL == 0
> kact.sa_flags = act->sa_flags | SA_RESTORER;
>
> kact.sa_restorer = ((act->sa_flags & SA_SIGINFO)
> ? &restore_rt : &restore);
> +# else
>
> __ASSUME_VSYSCALL is not defined so glibc should be setting
> SA_RESTORER.
We've tracked this a bit further. This seems to be fine in
/lib/libc-2.3.2.so, but broken in /lib/tls/libc-2.3.2.so which does not
properly set SA_RESTORER.
--
Ian Gulliver
Systems Administrator
FairPoint Communications
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