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Thu, 01 Apr 2021 10:59:02 -0400 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-42-VWBNjnvINQa7Hzkd43-5Fw-1; Thu, 01 Apr 2021 10:58:56 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id F3656801814 for ; Thu, 1 Apr 2021 14:58:55 +0000 (UTC) Received: from dgilbert-t580.localhost (ovpn-114-173.ams2.redhat.com [10.36.114.173]) by smtp.corp.redhat.com (Postfix) with ESMTP id C56335944C; Thu, 1 Apr 2021 14:58:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1617289138; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=tc9845wrIWnD6GyeGGHSuF/su66/ransIV2/IdKmVgU=; b=OR4rmoJscP0ePwUUBgJnED+kQkFjWa0WRb3JrTOvUvdsl6w2nUxBd0Yx9U1vSPRRzPRaui +fV43seu8roBqLLHQFkddQcRIQ2W96iGRmn04WV1cq9Jwu7z5dV2e4OoOZd7Ch0B4tuB2t OiVaABg/cRW/Jlp3YuddBuCUsFSnlvc= X-MC-Unique: VWBNjnvINQa7Hzkd43-5Fw-1 From: "Dr. David Alan Gilbert (git)" To: qemu-devel@nongnu.org, stefanha@redhat.com, vgoyal@redhat.com, virtio-fs@redhat.com Subject: [PATCH] virtiofsd: Fix security.capability comparison Date: Thu, 1 Apr 2021 15:58:45 +0100 Message-Id: <20210401145845.78445-1-dgilbert@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dgilbert@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=dgilbert@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, 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_H4=0.001, RCVD_IN_MSPIKE_WL=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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) Content-Type: text/plain; charset="utf-8" From: "Dr. David Alan Gilbert" My security fix for the security.capability remap has a silly early segfault in a simple case where there is an xattrmapping but it doesn't remap the securty.capability. Fixes: e586edcb41054 ("virtiofs: drop remapped security.capability xattr as= needed") Signed-off-by: Dr. David Alan Gilbert Reviewed-by: Connor Kuehl --- tools/virtiofsd/passthrough_ll.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough= _ll.c index b144320e48..1553d2ef45 100644 --- a/tools/virtiofsd/passthrough_ll.c +++ b/tools/virtiofsd/passthrough_ll.c @@ -2636,7 +2636,8 @@ static void parse_xattrmap(struct lo_data *lo) strerror(ret)); exit(1); } - if (!strcmp(lo->xattr_security_capability, "security.capability")) { + if (!lo->xattr_security_capability || + !strcmp(lo->xattr_security_capability, "security.capability")) { /* 1-1 mapping, don't need to do anything */ free(lo->xattr_security_capability); lo->xattr_security_capability =3D NULL; --=20 2.31.1