Re: linux-next: build failure after merge of the rcu tree

Paul E. McKenney
2021-03-17T14:24:33Z

On Wed, Mar 17, 2021 at 04:36:13PM +1100, Stephen Rothwell wrote:
> Hi all,
>
> After merging the rcu tree, today's linux-next build (x86_64 allmodconfig)
> failed like this:
>
> ERROR: modpost: "rcu_read_lock_longwait_held" [kernel/rcu/rcutorture.ko] undefined!
> ERROR: modpost: "rcu_read_unlock_longwait" [kernel/rcu/rcutorture.ko] undefined!
> ERROR: modpost: "rcu_read_lock_longwait" [kernel/rcu/rcutorture.ko] undefined!
>
> Caused by commit
>
> bd6ae31d1b1f ("rcutorture: Add the ability to torture RCU longsleep")
>
> CONFIG_LONGWAIT_RCU=y
> CONFIG_RCU_TORTURE_TEST=m
>
> I have used the rcu tree from next-20210316 for today.

Gah! Rebase first, then retest, -then- adjust rcu/next...

Will fix, apologies for the hassle!

Thanx, Paul