linux-kernel - Re: [rcu:dev 119/161] ERROR: "rcu_barrier" [fs/isofs/isofs.ko] undefined!

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Message-Id: <20180704113100.GI3593@linux.vnet.ibm.com>
Date:   Wed, 4 Jul 2018 04:31:00 -0700
From:   "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:     kbuild test robot <lkp@...el.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org
Subject: Re: [rcu:dev 119/161] ERROR: "rcu_barrier" [fs/isofs/isofs.ko]
 undefined!

On Wed, Jul 04, 2018 at 06:20:56AM +0800, kbuild test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev
> head:   472755d5ff3ee21ad16e0a0a06e087b7569eaffe
> commit: 16bf6b3b61864e444bae5e4a7cf121f777893a8c [119/161] rcu: Express Tiny RCU updates in terms of RCU rather than RCU-sched
> config: um-x86_64_defconfig (attached as .config)
> compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
> reproduce:
>         git checkout 16bf6b3b61864e444bae5e4a7cf121f777893a8c
>         # save the attached .config to linux build tree
>         make ARCH=um SUBARCH=x86_64
> 
> All errors (new ones prefixed by >>):
> 
> >> ERROR: "rcu_barrier" [fs/isofs/isofs.ko] undefined!

Gah!  I forgot to update the EXPORT_SYMBOL_GPL() to match the
function name.  Good catch, will fix, thank you!

							Thanx, Paul