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

From: Heikkinen, Ville (Nokia - FI/Espoo)
Subject: Re: [PATCH] stat: fallback if statx() is not available
Date: Thu, 10 Sep 2020 15:02:22 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0

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.


Is there a different bug you're trying to fix?

The outcome of this bug report
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.


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