#syz test
From f5fa72ad09258943346f31efcc659646b576ba6b Mon Sep 17 00:00:00 2001
From: Yuezhang Mo <Yuezhang.Mo@xxxxxxxx>
Date: Mon, 17 Mar 2025 10:53:10 +0800
Subject: [PATCH] exfat: fix the infinite loop in exfat_find_last_cluster()
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@xxxxxxxx>
---
fs/exfat/fatent.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/exfat/fatent.c b/fs/exfat/fatent.c
index 9e5492ac409b..917e31328cdc 100644
--- a/fs/exfat/fatent.c
+++ b/fs/exfat/fatent.c
@@ -262,7 +262,7 @@ int exfat_find_last_cluster(struct super_block *sb, struct exfat_chain *p_chain,
clu = next;
if (exfat_ent_get(sb, clu, &next))
return -EIO;
- } while (next != EXFAT_EOF_CLUSTER);
+ } while (next != EXFAT_EOF_CLUSTER && count <= p_chain->size);
if (p_chain->size != count) {
exfat_fs_error(sb,
--
2.43.0
