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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: BN7PR11MB2658.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 7b4a6e62-0a54-4e83-9de0-08d92c9356fd X-MS-Exchange-CrossTenant-originalarrivaltime: 11 Jun 2021 04:42:37.7034 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: pWyxAsRZLdnGm0R3wzX1cd+uEMOSOGcM30XfylzJrM9sZrA7olKlGB6n5vRG2+xgotZ6dLOgaxaoPB0JCf5gkQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR11MB2035 X-OriginatorOrg: intel.com Subject: Re: [dpdk-dev] [RFC] porting AddressSanitizer feature to DPDK X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Archived-At: List-Archive: > -----Original Message----- > From: Richardson, Bruce > Sent: Thursday, June 10, 2021 4:33 PM > To: Peng, ZhihongX > Cc: Burakov, Anatoly ; > stephen@networkplumber.org; dev@dpdk.org; Lin, Xueqin > > Subject: Re: [dpdk-dev] [RFC] porting AddressSanitizer feature to DPDK >=20 > On Thu, Jun 10, 2021 at 01:13:52PM +0800, zhihongx.peng@intel.com wrote: > > From: Zhihong Peng > > > > AddressSanitizer (ASan) is a google memory error detect standard tool. > > It could help to detect use-after-free and {heap,stack,global}-buffer > > overflow bugs in C/C++ programs, print detailed error information when > > error happens, large improve debug efficiency. > > > > By referring to its implementation algorithm > > (https://github.com/google/sanitizers/wiki/AddressSanitizerAlgorithm), > > ported heap-buffer-overflow and use-after-freefunctions to dpdk. > > > > Here is an example of heap-buffer-overflow bug: > > ...... > > char *p =3D rte_zmalloc(NULL, 7, 0); > > p[7] =3D 'a'; > > ...... > > > > Here is an example of use-after-free bug: > > ...... > > char *p =3D rte_zmalloc(NULL, 7, 0); > > rte_free(p); > > *p =3D 'a'; > > ...... > > > > If you want to use this feature, > > you need to use the following compilation options: > > -Dc_args=3D'-DRTE_MALLOC_ASAN' > > -Db_lundef=3Dfalse -Db_sanitize=3Daddress > > > Rather than forcing the user to pass in the extra c_args, you can > automatically add it from the eal/meson.build files. Something like: >=20 > if get_option('b_sanitize').startswith('address'): > cflags +=3D '-DRTE_MALLOC_ASAN' > endif >=20 > /Bruce Thanks Bruce for your review, really good suggestion for this part optimiza= tion, we will update it.=20