This is a note to let you know that I've just added the patch titled
ksmbd: only v2 leases handle the directory
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ksmbd-only-v2-leases-handle-the-directory.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 77bebd186442a7d703b796784db7495129cc3e70 Mon Sep 17 00:00:00 2001
From: Namjae Jeon <linkinjeon@xxxxxxxxxx>
Date: Mon, 15 Jan 2024 10:24:54 +0900
Subject: ksmbd: only v2 leases handle the directory
From: Namjae Jeon <linkinjeon@xxxxxxxxxx>
commit 77bebd186442a7d703b796784db7495129cc3e70 upstream.
When smb2 leases is disable, ksmbd can send oplock break notification
and cause wait oplock break ack timeout. It may appear like hang when
accessing a directory. This patch make only v2 leases handle the
directory.
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Namjae Jeon <linkinjeon@xxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/smb/server/oplock.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/fs/smb/server/oplock.c
+++ b/fs/smb/server/oplock.c
@@ -1191,6 +1191,12 @@ int smb_grant_oplock(struct ksmbd_work *
bool prev_op_has_lease;
__le32 prev_op_state = 0;
+ /* Only v2 leases handle the directory */
+ if (S_ISDIR(file_inode(fp->filp)->i_mode)) {
+ if (!lctx || lctx->version != 2)
+ return 0;
+ }
+
opinfo = alloc_opinfo(work, pid, tid);
if (!opinfo)
return -ENOMEM;
Patches currently in stable-queue which might be from linkinjeon@xxxxxxxxxx are
queue-6.6/ksmbd-validate-the-zero-field-of-packet-header.patch
queue-6.6/ksmbd-validate-mech-token-in-session-setup.patch
queue-6.6/ksmbd-only-v2-leases-handle-the-directory.patch
queue-6.6/ksmbd-fix-uaf-issue-in-ksmbd_tcp_new_connection.patch
