From 3ae4f87ac2c696e784ea4c2657f00a62616248eb Mon Sep 17 00:00:00 2001
From: Namjae Jeon <linkinjeon@kernel.org>
Date: Wed, 1 May 2024 21:44:02 +0900
Subject: [PATCH] ksmbd: avoid to send duplicate lease break notifications
commit 97c2ec64667bacc49881d2b2dd9afd4d1c3fbaeb upstream.
This patch fixes generic/011 when enable smb2 leases.
if ksmbd sends multiple notifications for a file, cifs increments
the reference count of the file but it does not decrement the count by
the failure of queue_work.
So even if the file is closed, cifs does not send a SMB2_CLOSE request.
Cc: stable@vger.kernel.org
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/smb/server/oplock.c | 21 +++++++++++++++------
1 file changed, 15 insertions(+), 6 deletions(-)
diff --git a/fs/smb/server/oplock.c b/fs/smb/server/oplock.c
index 1253e9bde34c8..4a128da383b91 100644
--- a/fs/smb/server/oplock.c
+++ b/fs/smb/server/oplock.c
@@ -612,13 +612,23 @@ static int oplock_break_pending(struct oplock_info *opinfo, int req_op_level)
if (opinfo->op_state == OPLOCK_CLOSING)
return -ENOENT;
- else if (!opinfo->is_lease && opinfo->level <= req_op_level)
- return 1;
+ else if (opinfo->level <= req_op_level) {
+ if (opinfo->is_lease &&
+ opinfo->o_lease->state !=
+ (SMB2_LEASE_HANDLE_CACHING_LE |
+ SMB2_LEASE_READ_CACHING_LE))
+ return 1;
+ }
}
- if (!opinfo->is_lease && opinfo->level <= req_op_level) {
- wake_up_oplock_break(opinfo);
- return 1;
+ if (opinfo->level <= req_op_level) {
+ if (opinfo->is_lease &&
+ opinfo->o_lease->state !=
+ (SMB2_LEASE_HANDLE_CACHING_LE |
+ SMB2_LEASE_READ_CACHING_LE)) {
+ wake_up_oplock_break(opinfo);
+ return 1;
+ }
}
return 0;
}
@@ -886,7 +896,6 @@ static int oplock_break(struct oplock_info *brk_opinfo, int req_op_level)
struct lease *lease = brk_opinfo->o_lease;
atomic_inc(&brk_opinfo->breaking_cnt);
-
err = oplock_break_pending(brk_opinfo, req_op_level);
if (err)
return err < 0 ? err : 0;
--
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