linux-kernel - [PATCH v2 1/3] fs/ntfs3: Fix memory leak if fill

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Message-ID: <5ee2a090-1709-5ca0-1e78-8db1f3ded973@paragon-software.com>
Date:   Tue, 28 Sep 2021 20:17:29 +0300
From:   Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
To:     <ntfs3@...ts.linux.dev>
CC:     <linux-kernel@...r.kernel.org>, <linux-fsdevel@...r.kernel.org>,
        <kari.argillander@...il.com>
Subject: [PATCH v2 1/3] fs/ntfs3: Fix memory leak if fill_super failed

Restore fc->s_fs_info to free memory allocated in ntfs_init_fs_context.

Signed-off-by: Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
---
 fs/ntfs3/super.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c
index 800897777eb0..aff90f70e7bf 100644
--- a/fs/ntfs3/super.c
+++ b/fs/ntfs3/super.c
@@ -1242,6 +1242,10 @@ static int ntfs_fill_super(struct super_block *sb, struct fs_context *fc)
 	return 0;
 out:
 	iput(inode);
+
+	/* Restore fc->s_fs_info to free memory allocated in ntfs_init_fs_context. */
+	fc->s_fs_info = sbi;
+
 	return err;
 }
 
-- 
2.33.0