[PATCH v4 7/7] smb: client: fix file type corruption in cifs_reparse_point_to_fattr()

[Paulo Alcantara <pc@manguebit.org>]

Setting the file type in cf_mode without clearing the existing S_IFMT
bits first is wrong as it corrupts the file type when cf_mode already
has type bits set (e.g. S_IFREG | S_IFLNK == S_IFDIR | S_IFREG).

Clear S_IFMT before setting S_IFLNK for native and SMB1 symlinks.

Closes: https://sashiko.dev/#/patchset/20260906181540.647469-1-pc%40manguebit.org
Signed-off-by: Paulo Alcantara <pc@manguebit.org>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Cc: Shyam Prasad N <sprasad@microsoft.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Bharath SM <bharathsm@microsoft.com>
Cc: stable@vger.kernel.org
---
 fs/smb/client/reparse.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/smb/client/reparse.c b/fs/smb/client/reparse.c
index 616ca2dbfac4..b6bded042e78 100644
--- a/fs/smb/client/reparse.c
+++ b/fs/smb/client/reparse.c
@@ -1280,6 +1280,7 @@ bool cifs_reparse_point_to_fattr(struct cifs_sb_info *cifs_sb,
 		break;
 	case 0: /* SMB1 symlink */
 	case IO_REPARSE_TAG_SYMLINK:
+		fattr->cf_mode &= ~S_IFMT;
 		fattr->cf_mode |= S_IFLNK;
 		break;
 	default:
-- 
2.55.0