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@vger.kernel.org # v5.7 Signed-off-by: Namjae Jeon namjae.jeon@samsung.com --- fs/exfat/file.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/fs/exfat/file.c b/fs/exfat/file.c index 8e3f0eef45d7..fce03f318787 100644 --- a/fs/exfat/file.c +++ b/fs/exfat/file.c @@ -171,11 +171,11 @@ int __exfat_truncate(struct inode *inode, loff_t new_size)
/* 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) {