Re: [PATCH] stat: fallback if statx() is not available

[Heikkinen, Ville (Nokia - FI/Espoo)]

On 9/9/20 10:35 PM, Jeff Layton wrote:
> On Tue, 2020-09-08 at 10:56 +0300, Ville Heikkinen wrote:
>
> Does this actually work around the seccomp bugs? What we found here was
> that once you tried to use statx with the broken seccomp code all
> syscalls issued by the task would get back -ENOSYS afterward.
>
> See:
>
>      https://bugzilla.redhat.com/show_bug.cgi?id=1762578
>
> Is there a different bug you're trying to fix?

The outcome of this bug report 
https://bugzilla.redhat.com/show_bug.cgi?id=1760300
led to a situation where in Fedora 32, the use of statx is disabled
when building coreutils.

After this change, the "Birth Date" in not available in stat output as
it was before.

I tested this in podman with creating seccomp filter profile without
having statx in the list - but I see now that this was perhaps not
the right way to test this, if the original problem really breaks all
the future syscalls.

BR,
Ville