During renaming, the parent directory information maybe
updated. But the file/directory still references to the
old parent directory information.
This bug will cause 2 problems.
(1) The renamed file can not be written.
[10768.175172] exFAT-fs (sda1): error, failed to bmap (inode : 7afd50e4 iblock : 0, err : -5)
[10768.184285] exFAT-fs (sda1): Filesystem has been set read-only
ash: write error: Input/output error
(2) Some dentries of the renamed file/directory are not set
to deleted after removing the file/directory.
fixes: 5f2aa075070c ("exfat: add inode operations")
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@xxxxxxxx>
Reviewed-by: Andy Wu <Andy.Wu@xxxxxxxx>
Reviewed-by: Aoyama Wataru <wataru.aoyama@xxxxxxxx>
Reviewed-by: Daniel Palmer <daniel.palmer@xxxxxxxx>
---
fs/exfat/namei.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/fs/exfat/namei.c b/fs/exfat/namei.c
index a02a04a993bf..e7adb6bfd9d5 100644
--- a/fs/exfat/namei.c
+++ b/fs/exfat/namei.c
@@ -1080,6 +1080,7 @@ static int exfat_rename_file(struct inode *inode, struct exfat_chain *p_dir,
exfat_remove_entries(inode, p_dir, oldentry, 0,
num_old_entries);
+ ei->dir = *p_dir;
ei->entry = newentry;
} else {
if (exfat_get_entry_type(epold) == TYPE_FILE) {
--
2.25.1
Attachment:
0001-exfat-fix-referencing-wrong-parent-directory-informa.patch
Description: 0001-exfat-fix-referencing-wrong-parent-directory-informa.patch
