seccomp: patchbpf: always include native architecture in stub #4219
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We'Ve confirmed this fixes the issue on ppc64le. For background, this issue means that our ENOSYS stub has never worked on ppc64le with Docker's default profile 😰. |
AkihiroSuda
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Calling the Linux AUDIT_* architecture constants "native" leads to confusing code when we are getting the actual native architecture of the running system. Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
It turns out that on ppc64le (at least), Docker doesn't include any architectures in the list of allowed architectures. libseccomp interprets this as "just include the default architecture" but patchbpf would return a no-op ENOSYS stub, which would lead to the exact issues that commit 7a8d716 ("seccomp: prepend -ENOSYS stub to all filters") fixed for other architectures. So, just always include the running architecture in the list. There's no real downside. Ref: https://bugzilla.suse.com/show_bug.cgi?id=1192051#c6 Reported-by: Fabian Vogt <fvogt@suse.com> Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
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It turns out that on ppc64le (at least), Docker doesn't include any
architectures in the list of allowed architectures. libseccomp
interprets this as "just include the default architecture" but patchbpf
would return a no-op ENOSYS stub, which would lead to the exact issues
that commit 7a8d716 ("seccomp: prepend -ENOSYS stub to all
filters") fixed for other architectures.
So, just always include the running architecture in the list. There's
no real downside.
Ref: https://bugzilla.suse.com/show_bug.cgi?id=1192051#c6
Reported-by: Fabian Vogt fvogt@suse.com
Signed-off-by: Aleksa Sarai cyphar@cyphar.com