Merge commit '9b3c4ab3045e953670c7de9c1165fae5358a7237' into rcu-merge.2021.11.01a
Test merge of RCU commmit 18f08e758f34 ("rcu-tasks: Add
trc_inspect_reader() checks for exiting critical section") and -tip commit
9b3c4ab3045e ("sched,rcu: Rework try_invoke_on_locked_down_task()").
This conflict was noted and fixed by Stephen Rothwell during -next testing.
https://lore.kernel.org/all/20211012154828.312f870f@canb.auug.org.au/
His fix has received extensive testing, including rcutorture testing.
This merge commit mirrors his.
