From patchwork Wed Jan 25 15:44:15 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wei Liu X-Patchwork-Id: 9537321 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 7039D6046A for ; Wed, 25 Jan 2017 15:46:35 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 605E527D8D for ; Wed, 25 Jan 2017 15:46:35 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 54A1A27FA6; Wed, 25 Jan 2017 15:46:35 +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 E0BDA27D8D for ; Wed, 25 Jan 2017 15:46:34 +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 1cWPkG-0004cx-Kq; Wed, 25 Jan 2017 15:44:24 +0000 Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cWPkE-0004az-Jq for xen-devel@lists.xenproject.org; Wed, 25 Jan 2017 15:44:22 +0000 Received: from [85.158.137.68] by server-1.bemta-3.messagelabs.com id 92/0F-20518-6D7C8885; Wed, 25 Jan 2017 15:44:22 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmplkeJIrShJLcpLzFFi42JxWrrBXvfq8Y4 Ig5PTLCy+b5nM5MDocfjDFZYAxijWzLyk/IoE1ozJezcxFdzgrVjcuZKlgfExdxcjJ4eEgL/E 40szGEFsNgFliZ+dvWwgtoiAnkTTgedAcS4OZoGjjBI7Xk8HSwgL2EucXvSeFcRmEVCVePdqK pjNK2Au8fDZHiaIofISu9ougsU5BSwklh+bxQxiCwHVXD26ihXCVpDomH6MCaJXUOLkzCcsID azgITEwRcvmCcw8s5CkpqFJLWAkWkVo3pxalFZapGuqV5SUWZ6RkluYmaOrqGBsV5uanFxYnp qTmJSsV5yfu4mRmDw1DMwMO5gvPzV6RCjJAeTkiiv8dKOCCG+pPyUyozE4oz4otKc1OJDjDIc HEoSvCePAeUEi1LTUyvSMnOAYQyTluDgURLh/QmS5i0uSMwtzkyHSJ1iVJQS590LkhAASWSU5 sG1wWLnEqOslDAvIwMDgxBPQWpRbmYJqvwrRnEORiVhXiFgJArxZOaVwE1/BbSYCWjxBeZ2kM UliQgpqQZGucrIppkuSQxeHzuLWTg1Xs8y2fj//2ZZS5+GrZEcFn0Fd2/xTDl6qkYqlFGk14/ nIN+eWwIhglFXvn5mXfEqUY/700xxJccaH/Nrxx4911hxwVZE2vPdvYobBhILlnuFzj+g8m8j 57JCW/ftDXefcjFXHTqtOD9HIupi5V8Tg1MrPcN+ZBcrsRRnJBpqMRcVJwIAOGhnUpgCAAA= X-Env-Sender: prvs=191d54f9e=wei.liu2@citrix.com X-Msg-Ref: server-14.tower-31.messagelabs.com!1485359057!82350498!3 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 56850 invoked from network); 25 Jan 2017 15:44:21 -0000 Received: from smtp02.citrix.com (HELO SMTP02.CITRIX.COM) (66.165.176.63) by server-14.tower-31.messagelabs.com with RC4-SHA encrypted SMTP; 25 Jan 2017 15:44:21 -0000 X-IronPort-AV: E=Sophos;i="5.33,284,1477958400"; d="scan'208";a="410780556" From: Wei Liu To: Xen-devel Date: Wed, 25 Jan 2017 15:44:15 +0000 Message-ID: <20170125154416.3133-7-wei.liu2@citrix.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170125154416.3133-1-wei.liu2@citrix.com> References: <20170125154416.3133-1-wei.liu2@citrix.com> MIME-Version: 1.0 Cc: George Dunlap , Andrew Cooper , Ian Jackson , Wei Liu , Jan Beulich Subject: [Xen-devel] [PATCH 6/7] 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 --- .../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 b5668c11e7..655315f9c1 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]; @@ -19,6 +21,12 @@ 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 8ca0421f60..3a731b28f2 100644 --- a/tools/fuzz/x86_instruction_emulator/x86-insn-emulator-fuzzer.c +++ b/tools/fuzz/x86_instruction_emulator/x86-insn-emulator-fuzzer.c @@ -717,6 +717,11 @@ 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