From nobody Tue Feb 10 16:44:07 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1730203903; cv=none; d=zohomail.com; s=zohoarc; b=JB3ljB8r9NmlMBmYXSto1exic0K8qegA4+1V2vZueU7L6MArjgmuMTQSDMtQRFgBfyXuU3vigW2e9S88K+XGWXh0DytZRH7ClaKiIK4exXvCSz4v3L735cSOUspEXhfsJ2DgNNnAP/531g8yXq6n7/I1qKz4i6RmCDaDNEWaI6k= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1730203903; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=hV9bRORlikllwDGAZFR9/+PU9WimawpPGHP7OfCvCPA=; b=O2FBt2G99o1Vfgglu0l0JUOoOFk1QH7gMCEdiArfsZeMGCVvFZ2C9vuHKF7AmxENqDTM/K7WXgo0l+jTMpedSXULi8pk90hGFRkMAjwDsaLDrzlJkaoUnftQYYxBZvTHLpHKnLKhAjKPsAw510bCfqllqu17vAyP7rYwUxWPtDQ= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1730203903136361.53992791585586; Tue, 29 Oct 2024 05:11:43 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1t5l3V-0004Z0-39; Tue, 29 Oct 2024 08:10:37 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1t5l3T-0004Yn-Q8 for qemu-devel@nongnu.org; Tue, 29 Oct 2024 08:10:35 -0400 Received: from mail-wr1-x42e.google.com ([2a00:1450:4864:20::42e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1t5l3S-0007Rt-59 for qemu-devel@nongnu.org; Tue, 29 Oct 2024 08:10:35 -0400 Received: by mail-wr1-x42e.google.com with SMTP id ffacd0b85a97d-37ed3bd6114so3453531f8f.2 for ; Tue, 29 Oct 2024 05:10:33 -0700 (PDT) Received: from draig.lan ([85.9.250.243]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-38058b712bfsm12319579f8f.79.2024.10.29.05.10.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 29 Oct 2024 05:10:31 -0700 (PDT) Received: from draig.lan (localhost [IPv6:::1]) by draig.lan (Postfix) with ESMTP id D2D8B5FAA9; Tue, 29 Oct 2024 12:10:30 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1730203832; x=1730808632; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=hV9bRORlikllwDGAZFR9/+PU9WimawpPGHP7OfCvCPA=; b=ElYp8KhdKz3DWg+8lsZsvpMmGg8Mdhdjym8tLBHzzl2//u6ef+HloMumst3EqHRPaS ZoMAzxDfjhy5PQ8B4jjYQCiwcT3BqSs+gp4F/3smLpI8XPtM0g6W3KReQyGaqIIB2el3 5tJYNLICcDLzYKvWWg+nHmSm/yY7hqUxxkcbdImeripI5GAK4JKm1zrKQtxfgXCYP55P OOIQDt5EhRPrk/ILBePqnnN0Eu/BuMzofbfhoV0pLf0ecn7ZOA/X8ndwGZ+r0U4TBzEe mZNVLj0hGnPHPPBw/bqP07vihDv9ot/gq8VI0fUzL+NE6KRnvG97h6U82XrAS9WNl94T KElw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1730203832; x=1730808632; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=hV9bRORlikllwDGAZFR9/+PU9WimawpPGHP7OfCvCPA=; b=XfyE9LNWpoOA9FROts5lrVO9JMyo8UDNCulvzQ5K8NoZ8n4CEbPnAqddpe8DgWmDF0 AQxoqvM8PgUeToPnmA+JkCrJn5/jZ/UrAu352eSS0vbdtSroTeS1L4XhXWZc3G1WuW59 6yI7OjV+dMq/DhL9ELJYZO7KLrJ3bg2/MuGEVQo6IEsJ8uYRjPSVDpf5nSgxKWwpVGfA kzUw7JdnFn+WVErthtLh4MBLFqe8fJWAQtFS1PJl5S7HZScMn4tqdjXNV5cbqKmx5eAE l7uPzGJMYeoNkxc07I2suDyen+Z95gdnL3gTmqG7W/fXV+UajlsJoNL9vhmEfccRGQ0T D7tw== X-Gm-Message-State: AOJu0YzwafIIxMq5YJWg6Gbqpf0AjsGc1Y74gvNTQacMAG9ZmJS8w2Sr nH4nA+eItgnYc6AlHb1Q/nodm+W7tLyUl9LNMymk+VkR9+78LNCD/FosrUQnlkA= X-Google-Smtp-Source: AGHT+IHQLA7fIJiqVOeqriyBOSdR9N5/LutdhMIjBZCRakAEoM38pKvwKwokVuNf5Muk/cencb41tA== X-Received: by 2002:adf:e543:0:b0:37d:54d0:1f20 with SMTP id ffacd0b85a97d-38061158e30mr8505650f8f.24.1730203832597; Tue, 29 Oct 2024 05:10:32 -0700 (PDT) From: =?UTF-8?q?Alex=20Benn=C3=A9e?= To: qemu-devel@nongnu.org Cc: Dmitry Osipenko , =?UTF-8?q?Alex=20Benn=C3=A9e?= , "Michael S. Tsirkin" Subject: [PULL 04/13] virtio-gpu: Handle virtio_gpu_virgl_init() failure Date: Tue, 29 Oct 2024 12:10:21 +0000 Message-Id: <20241029121030.4007014-5-alex.bennee@linaro.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20241029121030.4007014-1-alex.bennee@linaro.org> References: <20241029121030.4007014-1-alex.bennee@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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=2a00:1450:4864:20::42e; envelope-from=alex.bennee@linaro.org; helo=mail-wr1-x42e.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, 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: 2.1.29 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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1730203905287116600 From: Dmitry Osipenko virtio_gpu_virgl_init() may fail, leading to a further Qemu crash because Qemu assumes it never fails. Check virtio_gpu_virgl_init() return code and don't execute virtio commands on error. Failed virtio_gpu_virgl_init() will result in a timed out virtio commands for a guest OS. Signed-off-by: Dmitry Osipenko Message-Id: <20241024210311.118220-5-dmitry.osipenko@collabora.com> Signed-off-by: Alex Benn=C3=A9e diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h index 18b6c3b3a2..71775243e9 100644 --- a/include/hw/virtio/virtio-gpu.h +++ b/include/hw/virtio/virtio-gpu.h @@ -222,11 +222,18 @@ struct VirtIOGPUClass { Error **errp); }; =20 +/* VirtIOGPUGL renderer states */ +typedef enum { + RS_START, /* starting state */ + RS_INIT_FAILED, /* failed initialisation */ + RS_INITED, /* initialised and working */ + RS_RESET, /* inited and reset pending, moves to start after rese= t */ +} RenderState; + struct VirtIOGPUGL { struct VirtIOGPU parent_obj; =20 - bool renderer_inited; - bool renderer_reset; + RenderState renderer_state; =20 QEMUTimer *fence_poll; QEMUTimer *print_stats; diff --git a/hw/display/virtio-gpu-gl.c b/hw/display/virtio-gpu-gl.c index 29d20b0132..ea3413aa56 100644 --- a/hw/display/virtio-gpu-gl.c +++ b/hw/display/virtio-gpu-gl.c @@ -29,9 +29,14 @@ static void virtio_gpu_gl_update_cursor_data(VirtIOGPU *= g, struct virtio_gpu_scanout *s, uint32_t resource_id) { + VirtIOGPUGL *gl =3D VIRTIO_GPU_GL(g); uint32_t width, height; uint32_t pixels, *data; =20 + if (gl->renderer_state !=3D RS_INITED) { + return; + } + data =3D virgl_renderer_get_cursor_data(resource_id, &width, &height); if (!data) { return; @@ -65,13 +70,22 @@ static void virtio_gpu_gl_handle_ctrl(VirtIODevice *vde= v, VirtQueue *vq) return; } =20 - if (!gl->renderer_inited) { - virtio_gpu_virgl_init(g); - gl->renderer_inited =3D true; - } - if (gl->renderer_reset) { - gl->renderer_reset =3D false; + switch (gl->renderer_state) { + case RS_RESET: virtio_gpu_virgl_reset(g); + /* fallthrough */ + case RS_START: + if (virtio_gpu_virgl_init(g)) { + gl->renderer_state =3D RS_INIT_FAILED; + return; + } + + gl->renderer_state =3D RS_INITED; + break; + case RS_INIT_FAILED: + return; + case RS_INITED: + break; } =20 cmd =3D virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command)); @@ -98,9 +112,9 @@ static void virtio_gpu_gl_reset(VirtIODevice *vdev) * GL functions must be called with the associated GL context in main * thread, and when the renderer is unblocked. */ - if (gl->renderer_inited && !gl->renderer_reset) { + if (gl->renderer_state =3D=3D RS_INITED) { virtio_gpu_virgl_reset_scanout(g); - gl->renderer_reset =3D true; + gl->renderer_state =3D RS_RESET; } } =20 --=20 2.39.5