From: Liam R. Howlett <Liam.Howlett@oracle.com>
Date: Thu, 1 Sep 2022 01:06:49 +0000 (-0400)
Subject: maple_tree: Remove BUG_ON() from mas_set_height()
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=eec9ab99640034fec08d600c283a3f8c1d7b0ae4;p=users%2Fjedix%2Flinux-maple.git

maple_tree: Remove BUG_ON() from mas_set_height()

Use MT_WARN_ON() instead of MT_BUG_ON() as to avoid crashing the kernel.
In the unlikely even of a tree height of > 31, try to increase the
probability of the error being logged.

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

diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index ee083601dabe9..27f22ad127312 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -189,7 +189,7 @@ static void mas_set_height(struct ma_state *mas)
 	unsigned int new_flags = mas->tree->ma_flags;
 
 	new_flags &= ~MT_FLAGS_HEIGHT_MASK;
-	MT_BUG_ON(mas->tree, mas->depth > MAPLE_HEIGHT_MAX);
+	MT_WARN_ON(mas->tree, mas->depth > MAPLE_HEIGHT_MAX);
 	new_flags |= mas->depth << MT_FLAGS_HEIGHT_OFFSET;
 	mas->tree->ma_flags = new_flags;
 }