From patchwork Fri Feb 3 11:53:13 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wei Liu X-Patchwork-Id: 9554025 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 0355A604A7 for ; Fri, 3 Feb 2017 12:18:52 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E677D284D2 for ; Fri, 3 Feb 2017 12:18:51 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D9BB3284DC; Fri, 3 Feb 2017 12:18:51 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id CA27D284DB for ; Fri, 3 Feb 2017 12:18:46 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cZcmv-0005ej-IG; Fri, 03 Feb 2017 12:16:25 +0000 Received: from mail6.bemta5.messagelabs.com ([195.245.231.135]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cZcmu-0005ed-Qq for xen-devel@lists.xenproject.org; Fri, 03 Feb 2017 12:16:24 +0000 Received: from [85.158.139.211] by server-13.bemta-5.messagelabs.com id 38/3F-01724-79474985; Fri, 03 Feb 2017 12:16:23 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmpikeJIrShJLcpLzFFi42JxWrrBXnd6yZQ Ig6tXGC2+b5nM5MDocfjDFZYAxijWzLyk/IoE1oyJryewF7TyVTQ+OsTYwNjD08XIwSEh4C+x 7rlcFyMnB5uAssTPzl42EFtEQE+i6cBzRhCbWUBR4tTtGcwgtrCAi8Tst4cYQVpZBFQkLm+tA wnzClhKHH8+DaxVQkBeYlfbRVYQmxMovvfbbXYQW0jAQmJX134oW0GiY/oxJoheQYmTM5+wQK ySkDj44gXzBEbeWUhSs5CkFjAyrWJUL04tKkst0jXTSyrKTM8oyU3MzNE1NDDVy00tLk5MT81 JTCrWS87P3cQIDBsGINjBOLXB+RCjJAeTkihvc9qUCCG+pPyUyozE4oz4otKc1OJDjDIcHEoS vLeLgXKCRanpqRVpmTnAAIZJS3DwKInwMgKDWIi3uCAxtzgzHSJ1ilFRSpx3IkifAEgiozQPr g0WNZcYZaWEeRmBDhHiKUgtys0sQZV/xSjOwagkzNsFMoUnM68EbvoroMVMQIt/Pp4EsrgkES El1cDIt6bd6PTTbLm63MNJP5k1S21mWWo+Py9/zm8Rh46u+dwSl9j8TUqfOmOu5M3hMH2rY+p t72jxdcd1GeF/Ww84Xiy7rF2a1+Owb97brb68P7WjTLfM7pGa87haxGf6nRzBDYpmqXmXbd4n pc2+tFru2Myy7+5xn1esefB15SLO19smVr4q1+tXYinOSDTUYi4qTgQAkck5VJUCAAA= X-Env-Sender: prvs=200934ec6=wei.liu2@citrix.com X-Msg-Ref: server-6.tower-206.messagelabs.com!1486124181!82921896!1 X-Originating-IP: [66.165.176.63] X-SpamReason: No, hits=0.0 required=7.0 tests=sa_preprocessor: VHJ1c3RlZCBJUDogNjYuMTY1LjE3Ni42MyA9PiAzMDYwNDg=\n, received_headers: No Received headers X-StarScan-Received: X-StarScan-Version: 9.1.1; banners=-,-,- X-VirusChecked: Checked Received: (qmail 42777 invoked from network); 3 Feb 2017 12:16:22 -0000 Received: from smtp02.citrix.com (HELO SMTP02.CITRIX.COM) (66.165.176.63) by server-6.tower-206.messagelabs.com with RC4-SHA encrypted SMTP; 3 Feb 2017 12:16:22 -0000 X-IronPort-AV: E=Sophos;i="5.33,328,1477958400"; d="scan'208";a="412938206" From: Wei Liu To: Xen-devel Date: Fri, 3 Feb 2017 11:53:13 +0000 Message-ID: <20170203115314.19955-12-wei.liu2@citrix.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170203115314.19955-1-wei.liu2@citrix.com> References: <20170203115314.19955-1-wei.liu2@citrix.com> MIME-Version: 1.0 Cc: Wei Liu Subject: [Xen-devel] [PATCH v4 11/12] fuzz/x86emul: print out minimal input size X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" X-Virus-Scanned: ClamAV using ClamSMTP ... so that users can know how big the initial input should be. Signed-off-by: Wei Liu Reviewed-by: Jan Beulich --- .../fuzz/x86_instruction_emulator/afl-x86-insn-emulator-fuzzer.c | 8 ++++++++ tools/fuzz/x86_instruction_emulator/x86-insn-emulator-fuzzer.c | 5 +++++ 2 files changed, 13 insertions(+) diff --git a/tools/fuzz/x86_instruction_emulator/afl-x86-insn-emulator-fuzzer.c b/tools/fuzz/x86_instruction_emulator/afl-x86-insn-emulator-fuzzer.c index 494c23ba2e..16edbd6bab 100644 --- a/tools/fuzz/x86_instruction_emulator/afl-x86-insn-emulator-fuzzer.c +++ b/tools/fuzz/x86_instruction_emulator/afl-x86-insn-emulator-fuzzer.c @@ -2,8 +2,10 @@ #include #include #include +#include extern int LLVMFuzzerTestOneInput(const uint8_t *data_p, size_t size); +extern unsigned int fuzz_minimal_input_size(void); #define INPUT_SIZE 4096 static uint8_t input[INPUT_SIZE]; @@ -21,6 +23,12 @@ int main(int argc, char **argv) exit(-1); } + if ( !strcmp(argv[1], "--min-input-size") ) + { + printf("%u\n", fuzz_minimal_input_size()); + exit(0); + } + fp = fopen(argv[1], "rb"); if ( fp == NULL ) { diff --git a/tools/fuzz/x86_instruction_emulator/x86-insn-emulator-fuzzer.c b/tools/fuzz/x86_instruction_emulator/x86-insn-emulator-fuzzer.c index 08e11e91eb..82a7aa44b6 100644 --- a/tools/fuzz/x86_instruction_emulator/x86-insn-emulator-fuzzer.c +++ b/tools/fuzz/x86_instruction_emulator/x86-insn-emulator-fuzzer.c @@ -700,6 +700,11 @@ int LLVMFuzzerTestOneInput(const uint8_t *data_p, size_t size) return 0; } +unsigned int fuzz_minimal_input_size(void) +{ + return DATA_OFFSET + 1; +} + /* * Local variables: * mode: C