Hello! This series provides miscellaneous fixes. 1. Fix nfs_access_get_cached_rcu() sparse error, courtesy of Madhuparna Bhowmik. 2. Warn on for_each_leaf_node_cpu_mask() from non-leaf rcu_node structure. 3. Fix exp_funnel_lock()/rcu_exp_wait_wake() datarace. 4. Provide debug symbols and line numbers in KCSAN runs. 5. Add WRITE_ONCE() to rcu_node ->qsmask update. 6. Add WRITE_ONCE to rcu_node ->exp_seq_rq store. 7. Add READ_ONCE() to rcu_node ->gp_seq. 8. Add WRITE_ONCE() to rcu_state ->gp_req_activity. 9. Add WRITE_ONCE() to rcu_node ->qsmaskinitnext. 10. Add WRITE_ONCE() to rt_mutex ->owner. 11. Add READ_ONCE() to rcu_segcblist ->tails[]. 12. *_ONCE() for grace-period progress indicators. 13. Fix typos in beginning comments, courtesy of SeongJae Park. 14. Add READ_ONCE() to rcu_data ->gpwrap. 15. Add *_ONCE() to rcu_data ->rcu_forced_tick. 16. Add *_ONCE() to rcu_node ->boost_kthread_status. 17. Use hlist_unhashed_lockless() in timer_pending(), courtesy of Eric Dumazet. 18. Remove dead code from rcu_segcblist_insert_pend_cbs(). 19. Add WRITE_ONCE() to rcu_state ->gp_start. 20. Fix rcu_barrier_callback() race condition. 21. Add brackets around cond argument in __list_check_rcu macro, courtesy of Amol Grover. 22. Don't flag non-starting GPs before GP kthread is running. 23. Add missing annotation for rcu_nocb_bypass_lock(), courtesy of Jules Irenge. 24. Add missing annotation for rcu_nocb_bypass_unlock(), courtesy of Jules Irenge. 25. Optimize and protect atomic_cmpxchg() loop. 26. Tighten rcu_lockdep_assert_cblist_protected() check. 27. Make nocb_gp_wait() double-check unexpected-callback warning. 28. Mark rcu_state.ncpus to detect concurrent writes. 29. Mark rcu_state.gp_seq to detect concurrent writes. 30. Make rcu_barrier() account for offline no-CBs CPUs. Thanx, Paul ------------------------------------------------------------------------ fs/nfs/dir.c | 2 include/linux/rculist.h | 4 - include/linux/timer.h | 2 include/trace/events/rcu.h | 1 kernel/locking/rtmutex.c | 2 kernel/rcu/Makefile | 4 + kernel/rcu/rcu.h | 6 +- kernel/rcu/rcu_segcblist.c | 4 - kernel/rcu/srcutree.c | 2 kernel/rcu/tree.c | 134 +++++++++++++++++++++++++-------------------- kernel/rcu/tree_exp.h | 4 - kernel/rcu/tree_plugin.h | 21 ++++--- kernel/rcu/tree_stall.h | 41 +++++++------ kernel/time/timer.c | 7 +- 14 files changed, 135 insertions(+), 99 deletions(-)
