[Virtio-fs] [PATCH] tools/virtiofsd: Add fstatfs64 syscall to the seccomp allowlist

[Stefan Hajnoczi]

On Tue, Sep 14, 2021 at 02:32:14PM +0200, Thomas Huth wrote:
> The virtiofsd currently crashes on s390x when doing something like
> this in the guest:
> 
>  mkdir -p /mnt/myfs
>  mount -t virtiofs myfs /mnt/myfs
>  touch /mnt/myfs/foo.txt
>  stat -f /mnt/myfs/foo.txt
> 
> The problem is that the fstatfs64 syscall is called in this case
> from the virtiofsd. We have to put it on the seccomp allowlist to
> avoid that the daemon gets killed in this case.
> 
> Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=2001728
> Suggested-by: Vivek Goyal <vgoyal at redhat.com>
> Signed-off-by: Thomas Huth <thuth at redhat.com>
> ---
>  tools/virtiofsd/passthrough_seccomp.c | 1 +
>  1 file changed, 1 insertion(+)

Reviewed-by: Stefan Hajnoczi <stefanha at redhat.com>
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