linux-kernel - [PATCH] xfs: Use WARN_ON rather than BUG() for bailout mount-operation

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 28 Aug 2019 15:47:49 +0900
From:   Austin Kim <austindh.kim@...il.com>
To:     darrick.wong@...cle.com
Cc:     linux-xfs@...r.kernel.org, linux-kernel@...r.kernel.org,
        austindh.kim@...il.com
Subject: [PATCH] xfs: Use WARN_ON rather than BUG() for bailout
 mount-operation

If the CONFIG_BUG is enabled, BUG() is executed and then system is crashed.
However, the bailout for mount is no longer proceeding.

For this reason, using WARN_ON rather than BUG() could prevent this situation.
---
 fs/xfs/xfs_mount.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index 322da69..10fe000 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -213,8 +213,7 @@ xfs_initialize_perag(
 			goto out_hash_destroy;
 
 		spin_lock(&mp->m_perag_lock);
-		if (radix_tree_insert(&mp->m_perag_tree, index, pag)) {
-			BUG();
+		if (WARN_ON(radix_tree_insert(&mp->m_perag_tree, index, pag))){
 			spin_unlock(&mp->m_perag_lock);
 			radix_tree_preload_end();
 			error = -EEXIST;
-- 
2.6.2