From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 35412CCD183 for ; Thu, 9 Oct 2025 21:12:25 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1v6xv3-0004ql-2e; Thu, 09 Oct 2025 17:11:25 -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 <39iToaAcKCi8YLgTOPXRZZRWP.NZXbPXf-OPgPWYZYRYf.ZcR@flex--navidem.bounces.google.com>) id 1v6xv1-0004qc-G3 for qemu-devel@nongnu.org; Thu, 09 Oct 2025 17:11:23 -0400 Received: from mail-pl1-x64a.google.com ([2607:f8b0:4864:20::64a]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from <39iToaAcKCi8YLgTOPXRZZRWP.NZXbPXf-OPgPWYZYRYf.ZcR@flex--navidem.bounces.google.com>) id 1v6xuz-0004eS-EN for qemu-devel@nongnu.org; Thu, 09 Oct 2025 17:11:23 -0400 Received: by mail-pl1-x64a.google.com with SMTP id d9443c01a7336-269880a7bd9so30887545ad.3 for ; Thu, 09 Oct 2025 14:11:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1760044278; x=1760649078; darn=nongnu.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=Q0tFtzyt+FjI6rkGDEv+WSzzOsZAtXdzvzGPwjAg5wc=; b=JfO/w8rL8WaHQatX7YfUfJewwkgh9+Wzj+5nG13gAe9vq5uH3jjivSFfbgRFMuS6Jy hzKnG2WTLpdHkDkMyJgu8W01r6vQYetxrI1VfG2mxYY/WGD7R9VX7lz0Cy75Wb4rV5ll L+ZhAGFXC+633VneFhKwocIibu78CDv72k090iV/5GfOL8mBZfGaAf1gc/2qL5Udphpe yz6Mt6F60D6tdZYidp43n/H+en2efWBVmzBhj66Xiuke+Je9xgE7qa6+UdAKOsSAhRgg 94SXeJ0cgmIXUCuW7fesVHe8ce0dCOXNlhRX5U7l+lTyarDwpve9yjy12kNyUAM8/KiR qbxg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1760044278; x=1760649078; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=Q0tFtzyt+FjI6rkGDEv+WSzzOsZAtXdzvzGPwjAg5wc=; b=vPnoFBgrcsGUA0iLI52vmMqUyR6AJT8aQf+7gQJz1l6BeRWBgCZAF6ZDAOSSwgmIo3 Zp59O8lJuE1pvwgUkhXViCL9pCP8XSp5SSXpdAXq8NODAmmn7NDGshnpv8LobA7inbKX sbe3x7BU9jFOUUxsPBoGWkXjRZI3TcfJ621ZqkdxyujQLnUa7MMPVIaMqz80vm3YLSTB Rn8tLvsMsMqS948stJ8QN8vaAwaGemSQz7O1tXmnkvs86GEco21EPNvQDAbQQbLq7Kv/ DfQBttQH5LEhq1ouDeFG9hS1PVnZeFWPxlweXeIVtn1nlZPyXJdYA8cQQYgQZI0+mr/8 m1pQ== X-Gm-Message-State: AOJu0YzOve9j72kLIYq46gp6nWFgtSAnYZAyTHOkV8pVyLAE1TGTAqkN ensU4/gBBymh1Hu7sxbBpzrTQi0ORLeevUc8WoJTyQvLIgngbqiSGF3sZxIAHh06F96b13M8Qjr LP2U6nzRgcwdYaYxLIvEZSnaV0Sx7I2npWkcRTOLHjCu9Pfk6x1YjdPpA8eR5QjXyxO4eFan9ML hKHkQAv/XtAvhWMjvHUPitPVQgYVl4d5YtOsXd7SVr X-Google-Smtp-Source: AGHT+IEjxUHtaBRgvdS8JX3l6pH1dqgm6gpXAUAFlRBkb7BZToCZxiuU3uswLKIrLiiCg8ho1Wy3UgYBYxbG X-Received: from plsa9.prod.google.com ([2002:a17:902:b589:b0:269:9eda:4f2c]) (user=navidem job=prod-delivery.src-stubby-dispatcher) by 2002:a17:903:2ecd:b0:265:57dc:977b with SMTP id d9443c01a7336-2902741e47dmr104890575ad.61.1760044278280; Thu, 09 Oct 2025 14:11:18 -0700 (PDT) Date: Thu, 9 Oct 2025 21:11:14 +0000 Mime-Version: 1.0 X-Mailer: git-send-email 2.51.0.740.g6adb054d12-goog Message-ID: <20251009211114.2214848-1-navidem@google.com> Subject: [PATCH] tests/qtest/fuzz: Add generic fuzzer for VNC From: Navid Emamdoost To: qemu-devel@nongnu.org Cc: Stefan Hajnoczi , navidem@google.com, zsm@google.com, Alexander Bulekov , Paolo Bonzini , Bandan Das , Fabiano Rosas , Darren Kenny , Qiuhao Li , Laurent Vivier Content-Type: text/plain; charset="UTF-8" Received-SPF: pass client-ip=2607:f8b0:4864:20::64a; envelope-from=39iToaAcKCi8YLgTOPXRZZRWP.NZXbPXf-OPgPWYZYRYf.ZcR@flex--navidem.bounces.google.com; helo=mail-pl1-x64a.google.com X-Spam_score_int: -95 X-Spam_score: -9.6 X-Spam_bar: --------- X-Spam_report: (-9.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, 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, USER_IN_DEF_DKIM_WL=-7.5 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Add a new generic fuzz target for the QEMU VNC server. This allows the generic fuzzer to directly exercise the VNC protocol implementation by connecting to a VNC unix socket. --- This new target increases code coverage in the VNC subsystem and related networking and I/O code. The baseline coverage below was generated by running all existing fuzz targets with the oss-fuzz corpus. The new target shows significant gains: ---------------------------------------------------------------------------- File New Target Baseline Change ---------------------------------------------------------------------------- vnc.c 339/3212 (10.6%) 3/3212 (0.1%) +336 keymaps.c 91/184 (49.5%) 0/184 (0.0%) +91 net-listener.c 76/198 (38.4%) 3/198 (1.5%) +73 channel-socket.c 73/575 (12.7%) 19/575 (3.3%) +54 qemu-sockets.c 44/1019 (4.3%) 0/1019 (0.0%) +44 vnc-jobs.c 41/219 (18.7%) 0/219 (0.0%) +41 dns-resolver.c 28/145 (19.3%) 3/145 (2.1%) +25 Signed-off-by: Navid Emamdoost --- tests/qtest/fuzz/generic_fuzz_configs.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tests/qtest/fuzz/generic_fuzz_configs.h b/tests/qtest/fuzz/generic_fuzz_configs.h index ef0ad95712..2e802ab226 100644 --- a/tests/qtest/fuzz/generic_fuzz_configs.h +++ b/tests/qtest/fuzz/generic_fuzz_configs.h @@ -247,6 +247,10 @@ const generic_fuzz_config predefined_configs[] = { .args = "-machine q35 -nodefaults " "-parallel file:/dev/null", .objects = "parallel*", + },{ + .name = "vnc", + .args = "-machine q35 -nodefaults -vnc vnc=unix:/tmp/qemu-vnc.sock", + .objects = "*", } }; -- 2.51.0.740.g6adb054d12-goog