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bh=X5erqOm03G9NHKJ9YABxsEDOBfDLnRXOdIJxTjLjrZo=; b=TukunLFLwMyNsJIlbMpdqcaXc2ZZp/jh9XByUkJOcM9dPwr55hefzvcJe4c75j9441PecM 2CXUBtjXO06GWNeM1eo9ngTPaJ4H8fThj4oRqSDGsse/H7GAr4YDdePBTjOEUs3UJYBL3+ zTGM4CDlrKTabazaV0lHEjZl23gpWg8= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-100-ZivxND_dNBCXgEnKqt02PA-1; Tue, 14 Sep 2021 09:32:17 -0400 X-MC-Unique: ZivxND_dNBCXgEnKqt02PA-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 5E8A9100CCC7; Tue, 14 Sep 2021 13:32:16 +0000 (UTC) Received: from localhost (unknown [10.33.36.244]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1929F6A907; Tue, 14 Sep 2021 13:32:09 +0000 (UTC) Date: Tue, 14 Sep 2021 15:32:09 +0200 From: Sergio Lopez To: Thomas Huth Subject: Re: [Virtio-fs] [PATCH] tools/virtiofsd: Add fstatfs64 syscall to the seccomp allowlist Message-ID: <20210914133106.jfbulec3pd23cfvv@mhamilton> References: <20210914123214.181885-1-thuth@redhat.com> MIME-Version: 1.0 In-Reply-To: <20210914123214.181885-1-thuth@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=slp@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="6mcs2kfyiq275vhm" Content-Disposition: inline Received-SPF: pass client-ip=170.10.133.124; envelope-from=slp@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -31 X-Spam_score: -3.2 X-Spam_bar: --- X-Spam_report: (-3.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.398, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-devel@nongnu.org, "Dr. David Alan Gilbert" , virtio-fs@redhat.com, qemu-s390x@nongnu.org, Stefan Hajnoczi , Vivek Goyal Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" --6mcs2kfyiq275vhm Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable 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: >=20 > mkdir -p /mnt/myfs > mount -t virtiofs myfs /mnt/myfs > touch /mnt/myfs/foo.txt > stat -f /mnt/myfs/foo.txt >=20 > 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. >=20 > Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=3D2001728 > Suggested-by: Vivek Goyal > Signed-off-by: Thomas Huth > --- > tools/virtiofsd/passthrough_seccomp.c | 1 + > 1 file changed, 1 insertion(+) Reviewed-by: Sergio Lopez > diff --git a/tools/virtiofsd/passthrough_seccomp.c b/tools/virtiofsd/pass= through_seccomp.c > index f49ed94b5e..a3ce9f898d 100644 > --- a/tools/virtiofsd/passthrough_seccomp.c > +++ b/tools/virtiofsd/passthrough_seccomp.c > @@ -51,6 +51,7 @@ static const int syscall_allowlist[] =3D { > SCMP_SYS(fsetxattr), > SCMP_SYS(fstat), > SCMP_SYS(fstatfs), > + SCMP_SYS(fstatfs64), > SCMP_SYS(fsync), > SCMP_SYS(ftruncate), > SCMP_SYS(futex), > --=20 > 2.27.0 >=20 > _______________________________________________ > Virtio-fs mailing list > Virtio-fs@redhat.com > https://listman.redhat.com/mailman/listinfo/virtio-fs >=20 --6mcs2kfyiq275vhm Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEvtX891EthoCRQuii9GknjS8MAjUFAmFApFgACgkQ9GknjS8M AjXT6g//cEMLHGOs3/OAieTxXi8mdIl8rDfO8mS4f+VrhnXDpiIgwtejQXDFyXdt iUEsMmm6DNq43gNhLVo52mSxaAfDjipaoO/2tc6ANF/K8QulvQnoabI2+lPS0ilt KmcVhzDSSoIxv8xyIKIHbcKiEgX2ZtsI9DIg1sHInZwkNp2CKv71Qe6xIIaSDgkr BbZ+aeqMf7jZqulNxob/uvchg11K2Aq8gwS6PEQsaCGsf/cQX3xNgaf8gPIblr7X SZnNxu/oCQlOwdxNDNN2HagEqeGfl10XzN05m4QasizcwpC9Xbsr8jOKwmfxkTT5 cQAidjTfBCZChpkLLyqG7Bv2MVPTTpRylEpQIe2wT9vDNK8aHh7qOEk5rwxQO0/P cnUk4MBR0zfe9k/4jQZcVTzsPClKhqlZJh7kzB/m31Mo8Iun4Pf1HfXXBoXMmVXX DbBn+uau3ZyNfMWFIapCZbLS2ZReHuILt1fNomsGmhCBmb/+5NawUYNaubGYZVBw 2UZCsdlPr74C+jxUZOgfwgxNVEhIQqiTZsFVvmE/j0F//uTM41k4d5GVq154Yviy +Sm8POceEHDh6AEfdedUg2H3CV8hcxlTQfSxijguOs+AP4q0lB4vORRu1GI0D919 TDSvcNIJYRHw8VjGClIygE/6ubEzE4Ven9+ADfQMC+asaNHs/gI= =OFEB -----END PGP SIGNATURE----- --6mcs2kfyiq275vhm--