From: Namjae Jeon <namjae.jeon@xxxxxxxxxxx>
commit 29bbb14bfc80dd760b07d2be0a27e610562982e3 upstream.
At truncate, there is a problem of incorrect updating in the file entry
pointer instead of stream entry. This will cause the problem of
overwriting the time field of the file entry to new_size. Fix it to
update stream entry.
Fixes: 98d917047e8b ("exfat: add file operations")
Cc: stable@xxxxxxxxxxxxxxx # v5.7
Signed-off-by: Namjae Jeon <namjae.jeon@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/exfat/file.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/fs/exfat/file.c
+++ b/fs/exfat/file.c
@@ -170,11 +170,11 @@ int __exfat_truncate(struct inode *inode
/* File size should be zero if there is no cluster allocated */
if (ei->start_clu == EXFAT_EOF_CLUSTER) {
- ep->dentry.stream.valid_size = 0;
- ep->dentry.stream.size = 0;
+ ep2->dentry.stream.valid_size = 0;
+ ep2->dentry.stream.size = 0;
} else {
- ep->dentry.stream.valid_size = cpu_to_le64(new_size);
- ep->dentry.stream.size = ep->dentry.stream.valid_size;
+ ep2->dentry.stream.valid_size = cpu_to_le64(new_size);
+ ep2->dentry.stream.size = ep->dentry.stream.valid_size;
}
if (new_size == 0) {
