Re: [dpdk-dev] [PATCH v2] Enable AddressSanitizer feature on DPDK

["Peng, ZhihongX" <zhihongx.peng@intel.com>]

> -----Original Message-----
> From: David Marchand <david.marchand@redhat.com>
> Sent: Friday, September 17, 2021 4:23 PM
> To: Peng, ZhihongX <zhihongx.peng@intel.com>
> Cc: Burakov, Anatoly <anatoly.burakov@intel.com>; Ananyev, Konstantin
> <konstantin.ananyev@intel.com>; Stephen Hemminger
> <stephen@networkplumber.org>; dev <dev@dpdk.org>; Lin, Xueqin
> <xueqin.lin@intel.com>
> Subject: Re: [dpdk-dev] [PATCH v2] Enable AddressSanitizer feature on DPDK
> 
> On Thu, Sep 16, 2021 at 3:47 AM <zhihongx.peng@intel.com> wrote:
> >
> > From: Zhihong Peng <zhihongx.peng@intel.com>
> >
> > 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),
> > enable heap-buffer-overflow and use-after-free functions on dpdk.
> > DPDK ASAN function currently only supports on Linux x86_64.
> >
> > Here is an example of heap-buffer-overflow bug:
> >         ......
> >         char *p = rte_zmalloc(NULL, 7, 0);
> >         p[7] = 'a';
> >         ......
> >
> > Here is an example of use-after-free bug:
> >         ......
> >         char *p = rte_zmalloc(NULL, 7, 0);
> >         rte_free(p);
> >         *p = 'a';
> >         ......
> >
> 
> Unfortunately, this won't build with some (too smart) compilers.
> Can you look at the CI report?
> Thanks.

I am trying to solve this issue.If there is no good solution, this test case will be removed.
Thanks.

> 
> 
> > If you want to use this feature,
> > you need to add below compilation options when compiling code:
> > -Dbuildtype=debug -Db_lundef=false -Db_sanitize=address
> > "-Dbuildtype=debug": Display code information when coredump occurs in
> > the program.
> > "-Db_lundef=false": It is enabled by default, and needs to be disabled
> > when using asan.
> >
> > Signed-off-by: Xueqin Lin <xueqin.lin@intel.com>
> > Signed-off-by: Zhihong Peng <zhihongx.peng@intel.com>
> 
> 
> 
> --
> David Marchand