From: Liam R. Howlett <Liam.Howlett@Oracle.com>
Date: Thu, 1 Sep 2022 21:33:43 +0000 (-0400)
Subject: maple_tree: Change RCU checks to WARN_ON() instead of BUG_ON()
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=9ec93f67aa0ffd6f3743c13afa91831577b1879d;p=users%2Fjedix%2Flinux-maple.git

maple_tree: Change RCU checks to WARN_ON() instead of BUG_ON()

If RCU is enabled and the tree isn't locked, just warn the user and
avoid crashing the kernel.

Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
---

diff --git a/include/linux/maple_tree.h b/include/linux/maple_tree.h
index 03e383d5982a..d3f601c6d49a 100644
--- a/include/linux/maple_tree.h
+++ b/include/linux/maple_tree.h
@@ -621,7 +621,7 @@ static inline void mt_clear_in_rcu(struct maple_tree *mt)
 		return;
 
 	if (mt_external_lock(mt)) {
-		BUG_ON(!mt_lock_is_held(mt));
+		WARN_ON(!mt_lock_is_held(mt));
 		mt->ma_flags &= ~MT_FLAGS_USE_RCU;
 	} else {
 		mtree_lock(mt);
@@ -640,7 +640,7 @@ static inline void mt_set_in_rcu(struct maple_tree *mt)
 		return;
 
 	if (mt_external_lock(mt)) {
-		BUG_ON(!mt_lock_is_held(mt));
+		WARN_ON(!mt_lock_is_held(mt));
 		mt->ma_flags |= MT_FLAGS_USE_RCU;
 	} else {
 		mtree_lock(mt);