This is a note to let you know that I've just added the patch titled
locking/lockdep: Avoid RCU-induced noinstr fail
to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
locking-lockdep-avoid-rcu-induced-noinstr-fail.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 0b3e5a7915fe616919ed190207173d97d4a22ba5
Author: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Date: Thu Jun 24 11:41:10 2021 +0200
locking/lockdep: Avoid RCU-induced noinstr fail
[ Upstream commit ce0b9c805dd66d5e49fd53ec5415ae398f4c56e6 ]
vmlinux.o: warning: objtool: look_up_lock_class()+0xc7: call to rcu_read_lock_any_held() leaves .noinstr.text section
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210624095148.311980536@xxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index 03e3ab61a2edd..ac0725b1ada75 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -713,7 +713,7 @@ look_up_lock_class(struct lockdep_map *lock, unsigned int subclass)
if (DEBUG_LOCKS_WARN_ON(!irqs_disabled()))
return NULL;
- hlist_for_each_entry_rcu(class, hash_head, hash_entry) {
+ hlist_for_each_entry_rcu_notrace(class, hash_head, hash_entry) {
if (class->key == key) {
/*
* Huh! same key, different name? Did someone trample
