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References: <20210910020147.148019-1-zhihongx.peng@intel.com>
<20210916013843.342366-1-zhihongx.peng@intel.com>
In-Reply-To: <20210916013843.342366-1-zhihongx.peng@intel.com>
From: David Marchand <david.marchand@redhat.com>
Date: Fri, 17 Sep 2021 10:23:05 +0200
Message-ID: <CAJFAV8xzZENNKiZuSxAt5r5SsMGFL7HcT=LtaWD64PsZ5LnquQ@mail.gmail.com>
To: Zhihong Peng <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>,
Xueqin Lin <xueqin.lin@intel.com>
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Subject: Re: [dpdk-dev] [PATCH v2] Enable AddressSanitizer feature on DPDK
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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.
> 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