From e52dce610a2d53bf2b5e94a8843c71cb73a91ea5 Mon Sep 17 00:00:00 2001 From: Konstantin Komarov Date: Mon, 25 Sep 2023 10:56:15 +0300 Subject: fs/ntfs3: Do not allow to change label if volume is read-only Signed-off-by: Konstantin Komarov --- fs/ntfs3/super.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'fs/ntfs3') diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c index 5811da7e9d45..cf0a720523f0 100644 --- a/fs/ntfs3/super.c +++ b/fs/ntfs3/super.c @@ -497,7 +497,12 @@ static ssize_t ntfs3_label_write(struct file *file, const char __user *buffer, int err; struct super_block *sb = pde_data(file_inode(file)); ssize_t ret = count; - u8 *label = kmalloc(count, GFP_NOFS); + u8 *label; + + if (sb_rdonly(sb)) + return -EROFS; + + label = kmalloc(count, GFP_NOFS); if (!label) return -ENOMEM; -- cgit v1.2.3