From: Hongbo Li <lihongbo22@huawei.com>
Date: Tue, 24 Sep 2024 01:41:46 +0000 (+0800)
Subject: bcachefs: fix the memory leak in exception case
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=dc5bfdf8eaed76cf527c9477952c535f75e0e499;p=users%2Fhch%2Fblock.git

bcachefs: fix the memory leak in exception case

The pointer clean points the memory allocated by kmemdup, when the
return value of bch2_sb_clean_validate_late is not zero. The memory
pointed by clean is leaked. So we should free it in this case.

Fixes: a37ad1a3aba9 ("bcachefs: sb-clean.c")
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
---

diff --git a/fs/bcachefs/sb-clean.c b/fs/bcachefs/sb-clean.c
index 025848a9c4c0..005275281804 100644
--- a/fs/bcachefs/sb-clean.c
+++ b/fs/bcachefs/sb-clean.c
@@ -167,6 +167,7 @@ struct bch_sb_field_clean *bch2_read_superblock_clean(struct bch_fs *c)
 
 	ret = bch2_sb_clean_validate_late(c, clean, READ);
 	if (ret) {
+		kfree(clean);
 		mutex_unlock(&c->sb_lock);
 		return ERR_PTR(ret);
 	}