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SubjectRe: [kbuild-all] Re: [paulmck-rcu:dev.2022.02.17a 73/73] make[3]: *** No rule to make target 'kernel/rcu/typesafe.o', needed by 'kernel/rcu/built-in.a'.
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On 2/22/2022 5:47 AM, Paul E. McKenney wrote:
> On Tue, Feb 22, 2022 at 03:05:27AM +0800, kernel test robot wrote:
>> Hi Paul,
>>
>> First bad commit (maybe != root cause):
>>
>> tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2022.02.17a
>> head: f5b2eaf791ebbd6af881947ab7c40ed70681e534
>> commit: f5b2eaf791ebbd6af881947ab7c40ed70681e534 [73/73] EXP torture: Add tests demoing SLAB_TYPESAFE_BY_RCU
>> config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20220222/202202220308.TNib9D2v-lkp@intel.com/config)
>> compiler: arceb-elf-gcc (GCC) 11.2.0
>> reproduce (this is a W=1 build):
>> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>> chmod +x ~/bin/make.cross
>> # https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git/commit/?id=f5b2eaf791ebbd6af881947ab7c40ed70681e534
>> git remote add paulmck-rcu https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git
>> git fetch --no-tags paulmck-rcu dev.2022.02.17a
>> git checkout f5b2eaf791ebbd6af881947ab7c40ed70681e534
>> # save the config file to linux build tree
>> mkdir build_dir
>> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arc SHELL=/bin/bash
>>
>> If you fix the issue, kindly add following tag as appropriate
>> Reported-by: kernel test robot <lkp@intel.com>
>>
>> All errors (new ones prefixed by >>):
>>
>>>> make[3]: *** No rule to make target 'kernel/rcu/typesafe.o', needed by 'kernel/rcu/built-in.a'.
>> make[3]: Target '__build' not remade because of errors.
>
> This is the only commit involving kernel/rcu/typesafe.o, so...
>
> One the one hand, I do not plan to upstream this, so maybe it doesn't
> matter.
>
> I have been building this using the rcutorture scripting for some time,
> same RCU-related .config as you are using. But when I pulled it into
> a clone in a neighboring directory, it failed just as it did for you.
> The problem was that the update to kernel/rcu/Makefile somehow didn't
> come across, so this line was missing:
>
> obj-$(CONFIG_RCU_TYPESAFE_TEST) += typesafe.o
>
> Which of course explains the build failure.
>
> I blew away that clone and re-cloned it. And it still failed, both
> with "make" from the commandline and under rcutorture.
>
> Hahahahahahaahaha!!!
>
> I forgot "git add kernel/rcu/typesafe.c".
>
> There is now a new typesafe.2022.02.21a tag with this file added.
>
> Good catch! That file happened to still be lying around. The first
> "git reset --hard" would have destroyed. Thank you!!!
>
> And with that fixed, my clone now builds correctly. Does this fix
> it for you?

Hi Paul,

I can't find the tag 'typesafe.2022.02.21a' from
https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git/refs/tags

Best Regards,
Rong Chen

>
> Thanx, Paul
> _______________________________________________
> kbuild-all mailing list -- kbuild-all@lists.01.org
> To unsubscribe send an email to kbuild-all-leave@lists.01.org
>

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