Messages in this thread | | | Date | Tue, 7 Apr 2020 07:28:49 -0700 | From | "Paul E. McKenney" <> | Subject | Re: [rcu:dev.2020.04.05b 101/101] kprobes.c:undefined reference to `.synchronize_rcu_tasks' |
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On Tue, Apr 07, 2020 at 12:06:11PM +0800, kbuild test robot wrote: > Hi Paul, > > It's probably a bug fix that unveils the link errors.
Looks like my fault, actually, but your "unveils" point is right on, as it appears that this change exposed a bug in an earlier commit.
Will fix, and thank you for the testing!
Thanx, Paul
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2020.04.05b > head: 805020c8028f6e95a8fc57132af5f896a8ad6391 > commit: 805020c8028f6e95a8fc57132af5f896a8ad6391 [101/101] squash! rcu-tasks: Add an RCU Tasks Trace to simplify protection of tracing hooks > config: powerpc-defconfig (attached as .config) > compiler: powerpc64-linux-gcc (GCC) 9.3.0 > reproduce: > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > git checkout 805020c8028f6e95a8fc57132af5f896a8ad6391 > # save the attached .config to linux build tree > GCC_VERSION=9.3.0 make.cross ARCH=powerpc > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kbuild test robot <lkp@intel.com> > > All errors (new ones prefixed by >>): > > powerpc64-linux-ld: warning: orphan section `.gnu.hash' from `linker stubs' being placed in section `.gnu.hash' > powerpc64-linux-ld: kernel/kprobes.o: in function `.kprobe_optimizer': > >> kprobes.c:(.text+0x2bc8): undefined reference to `.synchronize_rcu_tasks' > powerpc64-linux-ld: kernel/bpf/trampoline.o: in function `.bpf_trampoline_put': > >> trampoline.c:(.text+0x630): undefined reference to `.synchronize_rcu_tasks' > powerpc64-linux-ld: kernel/bpf/trampoline.o: in function `.bpf_trampoline_update': > trampoline.c:(.text+0x908): undefined reference to `.synchronize_rcu_tasks' > > --- > 0-DAY CI Kernel Test Service, Intel Corporation > https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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