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From: "Peng, ZhihongX" <zhihongx.peng@intel.com>
To: "david.marchand@redhat.com" <david.marchand@redhat.com>,
"thomas@monjalon.net" <thomas@monjalon.net>, "Burakov, Anatoly"
<anatoly.burakov@intel.com>, "Ananyev, Konstantin"
<konstantin.ananyev@intel.com>, "stephen@networkplumber.org"
<stephen@networkplumber.org>, "Dumitrescu, Cristian"
<cristian.dumitrescu@intel.com>, "Mcnamara, John" <john.mcnamara@intel.com>,
"Richardson, Bruce" <bruce.richardson@intel.com>
CC: "dev@dpdk.org" <dev@dpdk.org>, "Lin, Xueqin" <xueqin.lin@intel.com>
Thread-Topic: [PATCH v13 1/4] enable ASan AddressSanitizer
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Date: Mon, 25 Oct 2021 01:58:37 +0000
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References: <20211019151524.2005442-4-zhihongx.peng@intel.com>
<20211020074643.3004385-1-zhihongx.peng@intel.com>
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Subject: Re: [dpdk-dev] [PATCH v13 1/4] enable ASan AddressSanitizer
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Sender: "dev" <dev-bounces@dpdk.org>
> -----Original Message-----
> From: Peng, ZhihongX <zhihongx.peng@intel.com>
> Sent: Wednesday, October 20, 2021 3:47 PM
> To: david.marchand@redhat.com; thomas@monjalon.net; Burakov, Anatoly
> <anatoly.burakov@intel.com>; Ananyev, Konstantin
> <konstantin.ananyev@intel.com>; stephen@networkplumber.org;
> Dumitrescu, Cristian <cristian.dumitrescu@intel.com>; Mcnamara, John
> <john.mcnamara@intel.com>; Richardson, Bruce
> <bruce.richardson@intel.com>
> Cc: dev@dpdk.org; Lin, Xueqin <xueqin.lin@intel.com>; Peng, ZhihongX
> <zhihongx.peng@intel.com>
> Subject: [PATCH v13 1/4] enable ASan AddressSanitizer
>=20
> From: Zhihong Peng <zhihongx.peng@intel.com>
>=20
> `AddressSanitizer
> <https://github.com/google/sanitizers/wiki/AddressSanitizer>`_ (ASan) is =
a
> widely-used debugging tool to detect memory access errors.
> It helps to detect issues like use-after-free, various kinds of buffer ov=
erruns
> in C/C++ programs, and other similar errors, as well as printing out deta=
iled
> debug information whenever an error is detected.
>=20
> We can enable ASan by adding below compilation options:
> -Dbuildtype=3Ddebug -Db_lundef=3Dfalse -Db_sanitize=3Daddress
> "-Dbuildtype=3Ddebug": This is a non-essential option. When this option i=
s
> added, if a memory error occurs, ASan can clearly show where the code is
> wrong.
> "-Db_lundef=3Dfalse": When use clang to compile DPDK, this option must be
> added.
>=20
> Signed-off-by: Xueqin Lin <xueqin.lin@intel.com>
> Signed-off-by: Zhihong Peng <zhihongx.peng@intel.com>
> Acked-by: John McNamara <john.mcnamara@intel.com>
> ---
> v7: 1) Split doc and code into two.
> 2) Modify asan.rst doc
> v8: No change.
> v9: 1) Add the check of libasan library.
> 2) Add release notes.
> v10:1) Split doc and code into two.
> 2) Meson supports asan.
> v11:Modify the document.
> v12:No change.
> v13:Modify the document.
> ---
> config/meson.build | 16 ++++++++++++++
> devtools/words-case.txt | 1 +
> doc/guides/prog_guide/asan.rst | 30 ++++++++++++++++++++++++++
> doc/guides/prog_guide/index.rst | 1 +
> doc/guides/rel_notes/release_21_11.rst | 9 ++++++++
> 5 files changed, 57 insertions(+)
> create mode 100644 doc/guides/prog_guide/asan.rst
>=20
> diff --git a/config/meson.build b/config/meson.build index
> 4cdf589e20..f02b0e9c6d 100644
> --- a/config/meson.build
> +++ b/config/meson.build
> @@ -411,6 +411,22 @@ if get_option('b_lto')
> endif
> endif
>=20
> +if get_option('b_sanitize') =3D=3D 'address' or get_option('b_sanitize')=
=3D=3D
> 'address,undefined'
> + if is_windows
> + error('ASan is not supported on windows')
> + endif
> +
> + if cc.get_id() =3D=3D 'gcc'
> + asan_dep =3D cc.find_library('asan', required: true)
> + if (not cc.links('int main(int argc, char *argv[]) { return 0; }=
',
> + dependencies: asan_dep))
> + error('broken dependency, "libasan"')
> + endif
> + add_project_link_arguments('-lasan', language: 'c')
> + dpdk_extra_ldflags +=3D '-lasan'
> + endif
> +endif
> +
> if get_option('default_library') =3D=3D 'both'
> error( '''
> Unsupported value "both" for "default_library" option.
> diff --git a/devtools/words-case.txt b/devtools/words-case.txt index
> 0bbad48626..ada6910fa0 100644
> --- a/devtools/words-case.txt
> +++ b/devtools/words-case.txt
> @@ -5,6 +5,7 @@ API
> Arm
> armv7
> armv8
> +ASan
> BAR
> CRC
> DCB
> diff --git a/doc/guides/prog_guide/asan.rst
> b/doc/guides/prog_guide/asan.rst new file mode 100644 index
> 0000000000..6888fc9a87
> --- /dev/null
> +++ b/doc/guides/prog_guide/asan.rst
> @@ -0,0 +1,30 @@
> +.. SPDX-License-Identifier: BSD-3-Clause
> + Copyright(c) 2021 Intel Corporation
> +
> +Running AddressSanitizer
> +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> +
> +`AddressSanitizer
> +<https://github.com/google/sanitizers/wiki/AddressSanitizer>`_ (ASan)
> +is a widely-used debugging tool to detect memory access errors.
> +It helps to detect issues like use-after-free, various kinds of buffer
> +overruns in C/C++ programs, and other similar errors, as well as
> +printing out detailed debug information whenever an error is detected.
> +
> +AddressSanitizer is a part of LLVM (3.1+) and GCC (4.8+).
> +
> +Add following meson build commands to enable ASan in the meson build
> system:
> +
> +* gcc::
> +
> + -Dbuildtype=3Ddebug -Db_sanitize=3Daddress
> +
> +* clang::
> +
> + -Dbuildtype=3Ddebug -Db_lundef=3Dfalse -Db_sanitize=3Daddress
> +
> +.. Note::
> +
> + a) If compile with gcc in centos, libasan needs to be installed sepa=
rately.
> + b) If the program is tested using cmdline, you may need to execute t=
he
> + "stty echo" command when an error occurs.
> diff --git a/doc/guides/prog_guide/index.rst
> b/doc/guides/prog_guide/index.rst index 89af28dacb..b95c460b19 100644
> --- a/doc/guides/prog_guide/index.rst
> +++ b/doc/guides/prog_guide/index.rst
> @@ -71,4 +71,5 @@ Programmer's Guide
> writing_efficient_code
> lto
> profile_app
> + asan
> glossary
> diff --git a/doc/guides/rel_notes/release_21_11.rst
> b/doc/guides/rel_notes/release_21_11.rst
> index 3362c52a73..10f4275b1b 100644
> --- a/doc/guides/rel_notes/release_21_11.rst
> +++ b/doc/guides/rel_notes/release_21_11.rst
> @@ -173,6 +173,15 @@ New Features
> * Added tests to verify tunnel header verification in IPsec inbound.
> * Added tests to verify inner checksum.
>=20
> +* **Enable ASan AddressSanitizer.**
> +
> + `AddressSanitizer
> + <https://github.com/google/sanitizers/wiki/AddressSanitizer>`_ (ASan)
> + is a widely-used debugging tool to detect memory access errors.
> + It helps to detect issues like use-after-free, various kinds of
> + buffer overruns in C/C++ programs, and other similar errors, as well
> + as printing out detailed debug information whenever an error is detect=
ed.
> +
>=20
> Removed Items
> -------------
> --
> 2.25.1
Hi David, Thomas
This is our last stable patch, and we have resolved the comments from
the community. Hope to get your comments!