Messages in this thread | | | Date | Tue, 7 Apr 2020 12:06:11 +0800 | From | kbuild test robot <> | Subject | [rcu:dev.2020.04.05b 101/101] kprobes.c:undefined reference to `.synchronize_rcu_tasks' |
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Hi Paul,
It's probably a bug fix that unveils the link errors.
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'
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