linux-kernel - [PATCH v4 0/4] use bin_attribute to avoid cpumap buff overflow

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Date:   Thu, 17 Jun 2021 22:19:06 +1200
From:   Barry Song <song.bao.hua@...ilicon.com>
To:     <gregkh@...uxfoundation.org>, <andriy.shevchenko@...ux.intel.com>,
        <linux-kernel@...r.kernel.org>
CC:     <linux@...musvillemoes.dk>, <rafael@...nel.org>,
        <akpm@...ux-foundation.org>, <rdunlap@...radead.org>,
        <agordeev@...ux.ibm.com>, <sbrivio@...hat.com>,
        <jianpeng.ma@...el.com>, <yury.norov@...il.com>,
        <valentin.schneider@....com>, <peterz@...radead.org>,
        <bristot@...hat.com>, <guodong.xu@...aro.org>,
        <tangchengchang@...wei.com>, <prime.zeng@...ilicon.com>,
        <yangyicong@...wei.com>, <tim.c.chen@...ux.intel.com>,
        <tiantao6@...ilicon.com>, <Jonathan.Cameron@...wei.com>,
        <linuxarm@...wei.com>, Barry Song <song.bao.hua@...ilicon.com>
Subject: [PATCH v4 0/4] use bin_attribute to avoid cpumap buff overflow

patch #1 adds a new function cpumap_print_to_buf and patch #2 uses
this function in drivers/base/topology.c, and patch #3 uses this new
function in drivers/base/node.c.
patch #4 adds test cases for the new API.

v4:
add test cases for bitmap_print_to_buf API;
add Reviewed-by of Jonathan Cameron for patches 1-3, thanks!

v3:
fixed the strlen issue and patch #1,#2,#3 minor formatting issues, thanks
to Andy Shevchenko and Jonathan Cameron.

v2:
split the original patch #1 into two patches and use kasprintf() in
patch #1 to simplify the code. do some minor formatting adjustments.

Barry Song (1):
  lib: test_bitmap: add bitmap_print_to_buf test cases

Tian Tao (3):
  lib: bitmap: introduce bitmap_print_to_buf
  topology: use bin_attribute to avoid buff overflow
  drivers/base/node.c: use bin_attribute to avoid buff overflow

 drivers/base/node.c     |  52 +++++++++-----
 drivers/base/topology.c | 115 +++++++++++++++++--------------
 include/linux/bitmap.h  |   2 +
 include/linux/cpumask.h |  21 ++++++
 lib/bitmap.c            |  37 +++++++++-
 lib/test_bitmap.c       | 149 ++++++++++++++++++++++++++++++++++++++++
 6 files changed, 304 insertions(+), 72 deletions(-)

-- 
2.25.1