linux-kernel - Re: [PATCH v2] fortify: Use WARN instead of BUG for now

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Message-ID: <201707291640.tdYUtjYh%fengguang.wu@intel.com>
Date:   Sat, 29 Jul 2017 16:56:54 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Kees Cook <keescook@...omium.org>
Cc:     kbuild-all@...org, Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Daniel Micay <danielmicay@...il.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        David Howells <dhowells@...hat.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] fortify: Use WARN instead of BUG for now

Hi Kees,

[auto build test ERROR on linus/master]
[also build test ERROR on v4.13-rc2 next-20170728]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Kees-Cook/fortify-Use-WARN-instead-of-BUG-for-now/20170728-091210
config: ia64-sim_defconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 6.2.0
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=ia64 

All errors (new ones prefixed by >>):

   lib/string.o: In function `fortify_overflow':
>> lib/string.c:984: undefined reference to `warn_slowpath_fmt'

vim +984 lib/string.c

   981	
   982	void fortify_overflow(const char *name)
   983	{
 > 984		WARN(1, "detected buffer overflow in %s\n", name);

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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