lib/nmi-backtrace.c needs linux/kprobes.h to get at the definition of NOKPROBE_SYMBOL().
I guess MN10300 does not support CONFIG_KPROBES=y. CONFIG_KPROBES=y requires the architecture asm/kprobes.h to define this structure, and mn10300 does not. I guess that as things like the scheduler also include linux/kprobes.h, this is not the only instance of this error when building mn10300 with KPROBES enabled. So, I guess that there's nothing that can be done about the build error other than "don't build mn10300 with KPROBES enabled". On Sun, Nov 13, 2016 at 09:09:26AM +0800, kbuild test robot wrote: > Hi Russell, > > FYI, the error/warning still remains. > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > master > head: 86e4ee760ef2f7571e233a3abf065ffd0bb4089d > commit: b2c0b2cbb282f0cf42518ffacbe197e6f2884168 nmi: create generic NMI > backtrace implementation > date: 1 year, 4 months ago > config: mn10300-allmodconfig (attached as .config) > compiler: am33_2.0-linux-gcc (GCC) 6.2.0 > 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 b2c0b2cbb282f0cf42518ffacbe197e6f2884168 > # save the attached .config to linux build tree > make.cross ARCH=mn10300 > > All errors (new ones prefixed by >>): > > In file included from lib/nmi_backtrace.c:17:0: > include/linux/kprobes.h: In function 'get_kprobe_ctlblk': > >> include/linux/kprobes.h:361:2: error: invalid use of undefined type > >> 'struct kprobe_ctlblk' > return this_cpu_ptr(&kprobe_ctlblk); > ^~~~~~ > > vim +361 include/linux/kprobes.h > > e65845235 Ananth N Mavinakayanahalli 2005-11-07 355 { > b76834bc1 Christoph Lameter 2010-12-06 356 > __this_cpu_write(current_kprobe, NULL); > e65845235 Ananth N Mavinakayanahalli 2005-11-07 357 } > e65845235 Ananth N Mavinakayanahalli 2005-11-07 358 > e65845235 Ananth N Mavinakayanahalli 2005-11-07 359 static inline struct > kprobe_ctlblk *get_kprobe_ctlblk(void) > e65845235 Ananth N Mavinakayanahalli 2005-11-07 360 { > bdffd893a Christoph Lameter 2014-04-29 @361 return > this_cpu_ptr(&kprobe_ctlblk); > e65845235 Ananth N Mavinakayanahalli 2005-11-07 362 } > e65845235 Ananth N Mavinakayanahalli 2005-11-07 363 > ^1da177e4 Linus Torvalds 2005-04-16 364 int > register_kprobe(struct kprobe *p); > > :::::: The code at line 361 was first introduced by commit > :::::: bdffd893a0e9c431304142d12d9a0a21d365c502 tracing: Replace > __get_cpu_var uses with this_cpu_ptr > > :::::: TO: Christoph Lameter <c...@linux.com> > :::::: CC: Steven Rostedt <rost...@goodmis.org> > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > https://lists.01.org/pipermail/kbuild-all Intel Corporation -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net.
