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Fri, 29 Nov 2019 21:34:48 +0000 From: "Oleinik, Alexander" To: "qemu-devel@nongnu.org" Subject: [PATCH v6 13/21] fuzz: add configure flag --enable-fuzzing Thread-Topic: [PATCH v6 13/21] fuzz: add configure flag --enable-fuzzing Thread-Index: AQHVpvzT7B4c2YwLh0e9DlnxntAFSg== Date: Fri, 29 Nov 2019 21:34:48 +0000 Message-ID: <20191129213424.6290-14-alxndr@bu.edu> References: <20191129213424.6290-1-alxndr@bu.edu> In-Reply-To: <20191129213424.6290-1-alxndr@bu.edu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.23.0 x-originating-ip: [128.197.127.33] x-clientproxiedby: BL0PR1501CA0025.namprd15.prod.outlook.com (2603:10b6:207:17::38) To DM6PR03MB4795.namprd03.prod.outlook.com (2603:10b6:5:18c::22) authentication-results: spf=none (sender IP is ) smtp.mailfrom=alxndr@bu.edu; x-ms-exchange-messagesentrepresentingtype: 1 x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 2f4359a8-02ba-48bc-c93c-08d77513f58d x-ms-traffictypediagnostic: DM6PR03MB5050: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:962; 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} EOF } +write_c_fuzzer_skeleton() { + cat > $TMPC < +#include +int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size); +int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { return 0; } +EOF +} + if check_define __linux__ ; then targetos="Linux" elif check_define _WIN32 ; then @@ -1539,6 +1549,10 @@ for opt do ;; --disable-plugins) plugins="no" ;; + --enable-fuzzing) fuzzing=yes + ;; + --disable-fuzzing) fuzzing=no + ;; *) echo "ERROR: unknown option $opt" echo "Try '$0 --help' for more information" @@ -6018,6 +6032,15 @@ EOF fi fi +########################################## +# checks for fuzzer +if test "$fuzzing" = "yes" ; then + write_c_fuzzer_skeleton + if compile_prog "$CPU_CFLAGS -Werror -fsanitize=address,fuzzer" ""; then + have_fuzzer=yes + fi +fi + ########################################## # check for libpmem @@ -6599,6 +6622,7 @@ echo "libpmem support $libpmem" echo "libudev $libudev" echo "default devices $default_devices" echo "plugin support $plugins" +echo "fuzzing support $fuzzing" if test "$supported_cpu" = "no"; then echo @@ -7435,6 +7459,16 @@ fi if test "$sheepdog" = "yes" ; then echo "CONFIG_SHEEPDOG=y" >> $config_host_mak fi +if test "$fuzzing" = "yes" ; then + if test "$have_fuzzer" = "yes"; then + FUZZ_LDFLAGS=" -fsanitize=address,fuzzer" + FUZZ_CFLAGS=" -fsanitize=address,fuzzer" + CFLAGS=" -fsanitize=address" + else + error_exit "Your compiler doesn't support -fsanitize=address,fuzzer" + exit 1 + fi +fi if test "$plugins" = "yes" ; then echo "CONFIG_PLUGIN=y" >> $config_host_mak @@ -7538,6 +7572,11 @@ if test "$libudev" != "no"; then echo "CONFIG_LIBUDEV=y" >> $config_host_mak echo "LIBUDEV_LIBS=$libudev_libs" >> $config_host_mak fi +if test "$fuzzing" != "no"; then + echo "CONFIG_FUZZ=y" >> $config_host_mak + echo "FUZZ_CFLAGS=$FUZZ_CFLAGS" >> $config_host_mak + echo "FUZZ_LDFLAGS=$FUZZ_LDFLAGS" >> $config_host_mak +fi if test "$edk2_blobs" = "yes" ; then echo "DECOMPRESS_EDK2_BLOBS=y" >> $config_host_mak