From patchwork Tue Jun 16 06:45:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 1310029 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=IVBa+Uu5; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 49mJjf71X8z9sSt for ; Tue, 16 Jun 2020 16:50:14 +1000 (AEST) Received: from localhost ([::1]:47930 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jl5QC-0005Rm-8X for incoming@patchwork.ozlabs.org; Tue, 16 Jun 2020 02:50:12 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:41930) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jl5MX-0001iO-A7 for qemu-devel@nongnu.org; Tue, 16 Jun 2020 02:46:26 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:20548 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1jl5MT-0005fL-DU for qemu-devel@nongnu.org; Tue, 16 Jun 2020 02:46:23 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1592289980; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=WY9uuhYcrLCiZTe+aHYizIWB/zPu8U68u5vIIhwUxgY=; b=IVBa+Uu53Kaspx4G3xHBrvagRosYJi/8kaDNUbe7UQErMOuX2SuhwkKvZYKhmZIBO9HBTh WUVnNc73Q4Z1L5vJuktP7sIEEUl8rMrz6D6I2nNqnWbWLOlHqmL5xJP32ZZkW4uikbTugE 970egiz2hJT/btAd8+FEFXeGkmnBFGE= 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-408-oHPi5gkJPRuDAOLNOqd7XQ-1; Tue, 16 Jun 2020 02:46:16 -0400 X-MC-Unique: oHPi5gkJPRuDAOLNOqd7XQ-1 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 4244B100961C; Tue, 16 Jun 2020 06:46:15 +0000 (UTC) Received: from jason-ThinkPad-T430s.redhat.com (ovpn-13-222.pek2.redhat.com [10.72.13.222]) by smtp.corp.redhat.com (Postfix) with ESMTP id A0F5F8202D; Tue, 16 Jun 2020 06:46:13 +0000 (UTC) From: Jason Wang To: peter.maydell@linaro.org Subject: [PULL 10/33] hw/net/tulip: Log descriptor overflows Date: Tue, 16 Jun 2020 14:45:21 +0800 Message-Id: <1592289944-13727-11-git-send-email-jasowang@redhat.com> In-Reply-To: <1592289944-13727-1-git-send-email-jasowang@redhat.com> References: <1592289944-13727-1-git-send-email-jasowang@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=205.139.110.120; envelope-from=jasowang@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/16 02:45:54 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN 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: Jason Wang , qemu-devel@nongnu.org, =?utf-8?q?Phili?= =?utf-8?q?ppe_Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Philippe Mathieu-Daudé Log with GUEST_ERROR what the guest is doing wrong. Signed-off-by: Philippe Mathieu-Daudé Signed-off-by: Jason Wang --- hw/net/tulip.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/hw/net/tulip.c b/hw/net/tulip.c index 57ecbe2..4487fd6 100644 --- a/hw/net/tulip.c +++ b/hw/net/tulip.c @@ -578,6 +578,9 @@ static int tulip_copy_tx_buffers(TULIPState *s, struct tulip_descriptor *desc) int len2 = (desc->control >> TDES1_BUF2_SIZE_SHIFT) & TDES1_BUF2_SIZE_MASK; if (s->tx_frame_len + len1 > sizeof(s->tx_frame)) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: descriptor overflow (ofs: %u, len:%d, size:%zu)\n", + __func__, s->tx_frame_len, len1, sizeof(s->tx_frame)); return -1; } if (len1) { @@ -587,6 +590,9 @@ static int tulip_copy_tx_buffers(TULIPState *s, struct tulip_descriptor *desc) } if (s->tx_frame_len + len2 > sizeof(s->tx_frame)) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: descriptor overflow (ofs: %u, len:%d, size:%zu)\n", + __func__, s->tx_frame_len, len2, sizeof(s->tx_frame)); return -1; } if (len2) {