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=b74bbd6015bc576f5a30e9ad1afdf61bfa018c94;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 changes, 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 5e7d01e7e5ba2..e668f553a2172 100644
--- a/include/linux/maple_tree.h
+++ b/include/linux/maple_tree.h
@@ -610,7 +610,7 @@ 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);
@@ -629,7 +629,7 @@ 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);