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(cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: dmitry.osipenko) by madrid.collaboradmins.com (Postfix) with ESMTPSA id C4F6137804C9; Sun, 23 Jun 2024 15:24:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1719156247; bh=1K/2VgHEPsR0bEtoRNVpLnUq1gaZSsGY5DWQgVCAWXU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=shvKZSL8UTDryJbXTWDvMBdeXkpucSIv9iItqlfulJkUw1raytFDiysQrzEdq2Q8B RE+7r0K7+lYKJbiSwItencbxR0kX8oFCtdEVuhLLfbFiQp00LNw0nd5QMvapzXcbat 8zm5siejFkUQfRYHbshL2UFh2mw21omsMmTO94fYBLlJxCzJzvvbzA7+6MlxB7A8qd h5gDX65CNK/UgqxLFi9zb0yOTSOfCq4nQb0EoQrITpgYSQ0WwTBHxYQGu4p901KiqJ 5D97ejEPdTIZkSqovZODJ5h90av3EwM1fHT81MljGRFkNGsN32ZPWA3403Of2gOhPK DvOZVamCIptzg== From: Dmitry Osipenko To: Akihiko Odaki , Huang Rui , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Gerd Hoffmann , "Michael S . Tsirkin" , Stefano Stabellini , Antonio Caggiano , "Dr . David Alan Gilbert" , Robert Beckett , Gert Wollny , =?UTF-8?q?Alex=20Benn=C3=A9e?= Cc: qemu-devel@nongnu.org, Gurchetan Singh , ernunes@redhat.com, Alyssa Ross , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xenia Ragiadakou , Pierre-Eric Pelloux-Prayer , Honglei Huang , Julia Zhang , Chen Jiqian , Yiwei Zhang Subject: [PATCH v16 04/13] virtio-gpu: Handle virtio_gpu_virgl_init() failure Date: Sun, 23 Jun 2024 18:23:34 +0300 Message-ID: <20240623152343.328436-5-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240623152343.328436-1-dmitry.osipenko@collabora.com> References: <20240623152343.328436-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 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+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1098:ed:100::25; envelope-from=dmitry.osipenko@collabora.com; helo=madrid.collaboradmins.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, 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+importer2=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer2=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @collabora.com) X-ZM-MESSAGEID: 1719156313914100009 Content-Type: text/plain; charset="utf-8" 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 Reviewed-by: Akihiko Odaki --- hw/display/virtio-gpu-gl.c | 30 ++++++++++++++++++++++-------- include/hw/virtio/virtio-gpu.h | 11 +++++++++-- 2 files changed, 31 insertions(+), 10 deletions(-) diff --git a/hw/display/virtio-gpu-gl.c b/hw/display/virtio-gpu-gl.c index e06be60dfbfc..21a1e9a05c5d 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 diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h index 7ff989a45a5c..6e71d799e5da 100644 --- a/include/hw/virtio/virtio-gpu.h +++ b/include/hw/virtio/virtio-gpu.h @@ -224,11 +224,18 @@ 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; --=20 2.45.2