netdev - Re: [PATCH 11/12] [RFC] ipv4: avoid timespec in timestamp computation

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Date:	Wed, 30 Sep 2015 19:55:43 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	kbuild-all@...org, netdev@...r.kernel.org, y2038@...ts.linaro.org,
	linux-kernel@...r.kernel.org,
	"David S. Miller" <davem@...emloft.net>,
	Arnd Bergmann <arnd@...db.de>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	James Morris <jmorris@...ei.org>,
	Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
	Patrick McHardy <kaber@...sh.net>,
	John Stultz <john.stultz@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 11/12] [RFC] ipv4: avoid timespec in timestamp computation

Hi Arnd,

[auto build test results on v4.3-rc3 -- if it's inappropriate base, please ignore]

config: mn10300-asb2364_defconfig (attached as .config)
reproduce:
  wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
  chmod +x ~/bin/make.cross
  git checkout e1358094d427405462a47d6d2650458b689e55d9
  # save the attached .config to linux build tree
  make.cross ARCH=mn10300 

All error/warnings (new ones prefixed by >>):

   am33_2.0-linux-ld: Dwarf Error: mangled line number section.
   am33_2.0-linux-ld: Dwarf Error: mangled line number section.
   kernel/built-in.o: In function `current_thread_info':
   (___ksymtab_gpl+ktime_get_ms_since_midnight+0x0): undefined reference to `ktime_get_ms_since_midnight'
   am33_2.0-linux-ld: Dwarf Error: mangled line number section.
   am33_2.0-linux-ld: Dwarf Error: mangled line number section.
   am33_2.0-linux-ld: Dwarf Error: mangled line number section.
   am33_2.0-linux-ld: Dwarf Error: mangled line number section.
   am33_2.0-linux-ld: Dwarf Error: mangled line number section.
   am33_2.0-linux-ld: Dwarf Error: mangled line number section.
   am33_2.0-linux-ld: Dwarf Error: mangled line number section.
   am33_2.0-linux-ld: Dwarf Error: mangled line number section.
   am33_2.0-linux-ld: Dwarf Error: mangled line number section.
   net/built-in.o: In function `register_netevent_notifier':
>> net/core/netevent.c:29: undefined reference to `ktime_get_ms_since_midnight'
>> net/core/netevent.c:29: undefined reference to `ktime_get_ms_since_midnight'
   net/core/netevent.c:17: undefined reference to `ktime_get_ms_since_midnight'

vim +29 net/core/netevent.c

792d1932 Tom Tucker 2006-07-30  23  /**
792d1932 Tom Tucker 2006-07-30  24   *	register_netevent_notifier - register a netevent notifier block
792d1932 Tom Tucker 2006-07-30  25   *	@nb: notifier
792d1932 Tom Tucker 2006-07-30  26   *
792d1932 Tom Tucker 2006-07-30  27   *	Register a notifier to be called when a netevent occurs.
792d1932 Tom Tucker 2006-07-30  28   *	The notifier passed is linked into the kernel structures and must
792d1932 Tom Tucker 2006-07-30 @29   *	not be reused until it has been unregistered. A negative errno code
792d1932 Tom Tucker 2006-07-30  30   *	is returned on a failure.
792d1932 Tom Tucker 2006-07-30  31   */
792d1932 Tom Tucker 2006-07-30  32  int register_netevent_notifier(struct notifier_block *nb)

:::::: The code at line 29 was first introduced by commit
:::::: 792d1932e319ff8ba01361e7d151b1794c55c31f [NET]: Network Event Notifier Mechanism.

:::::: TO: Tom Tucker <tom@...ngridcomputing.com>
:::::: CC: David S. Miller <davem@...set.davemloft.net>

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Download attachment ".config.gz" of type "application/octet-stream" (8462 bytes)