* [PATCH] exfat: fix incorrect update of stream entry in __exfat_truncate()
[not found] <CGME20200603233258epcas1p3b17bdc6c4f8df1089693eebaf1124d0a@epcas1p3.samsung.com>
@ 2020-06-03 23:28 ` Namjae Jeon
0 siblings, 0 replies; only message in thread
From: Namjae Jeon @ 2020-06-03 23:28 UTC (permalink / raw)
To: linux-fsdevel; +Cc: linux-kernel, sj1557.seo, Namjae Jeon, stable
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) {
--
2.17.1
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