3 files changed, 31 insertions, 6 deletions

diff --git a/fs/smb/server/mgmt/share_config.c b/fs/smb/server/mgmt/share_config.c
index e0a6b75809..a2f0a2edce 100644
--- a/fs/smb/server/mgmt/share_config.c
+++ b/fs/smb/server/mgmt/share_config.c
@@ -165,12 +165,8 @@ static struct ksmbd_share_config *share_config_request(struct unicode_map *um,
 
 		share->path = kstrndup(ksmbd_share_config_path(resp), path_len,
 				      GFP_KERNEL);
-		if (share->path) {
+		if (share->path)
 			share->path_sz = strlen(share->path);
-			while (share->path_sz > 1 &&
-			       share->path[share->path_sz - 1] == '/')
-				share->path[--share->path_sz] = '\0';
-		}
 		share->create_mask = resp->create_mask;
 		share->directory_mask = resp->directory_mask;
 		share->force_create_mode = resp->force_create_mode;
diff --git a/fs/smb/server/mgmt/user_session.c b/fs/smb/server/mgmt/user_session.c
index 15f68ee050..aec0a7a124 100644
--- a/fs/smb/server/mgmt/user_session.c
+++ b/fs/smb/server/mgmt/user_session.c
@@ -156,7 +156,7 @@ void ksmbd_session_destroy(struct ksmbd_session *sess)
 	kfree(sess);
 }
 
-static struct ksmbd_session *__session_lookup(unsigned long long id)
+struct ksmbd_session *__session_lookup(unsigned long long id)
 {
 	struct ksmbd_session *sess;
 
@@ -305,6 +305,32 @@ struct preauth_session *ksmbd_preauth_session_alloc(struct ksmbd_conn *conn,
 	return sess;
 }
 
+void destroy_previous_session(struct ksmbd_conn *conn,
+			      struct ksmbd_user *user, u64 id)
+{
+	struct ksmbd_session *prev_sess;
+	struct ksmbd_user *prev_user;
+
+	down_write(&sessions_table_lock);
+	down_write(&conn->session_lock);
+	prev_sess = __session_lookup(id);
+	if (!prev_sess || prev_sess->state == SMB2_SESSION_EXPIRED)
+		goto out;
+
+	prev_user = prev_sess->user;
+	if (!prev_user ||
+	    strcmp(user->name, prev_user->name) ||
+	    user->passkey_sz != prev_user->passkey_sz ||
+	    memcmp(user->passkey, prev_user->passkey, user->passkey_sz))
+		goto out;
+
+	ksmbd_destroy_file_table(&prev_sess->file_table);
+	prev_sess->state = SMB2_SESSION_EXPIRED;
+out:
+	up_write(&conn->session_lock);
+	up_write(&sessions_table_lock);
+}
+
 static bool ksmbd_preauth_session_id_match(struct preauth_session *sess,
 					   unsigned long long id)
 {
diff --git a/fs/smb/server/mgmt/user_session.h b/fs/smb/server/mgmt/user_session.h
index 63cb08fffd..dc9fded2cd 100644
--- a/fs/smb/server/mgmt/user_session.h
+++ b/fs/smb/server/mgmt/user_session.h
@@ -88,8 +88,11 @@ struct ksmbd_session *ksmbd_session_lookup(struct ksmbd_conn *conn,
 int ksmbd_session_register(struct ksmbd_conn *conn,
 			   struct ksmbd_session *sess);
 void ksmbd_sessions_deregister(struct ksmbd_conn *conn);
+struct ksmbd_session *__session_lookup(unsigned long long id);
 struct ksmbd_session *ksmbd_session_lookup_all(struct ksmbd_conn *conn,
 					       unsigned long long id);
+void destroy_previous_session(struct ksmbd_conn *conn,
+			      struct ksmbd_user *user, u64 id);
 struct preauth_session *ksmbd_preauth_session_alloc(struct ksmbd_conn *conn,
 						    u64 sess_id);
 struct preauth_session *ksmbd_preauth_session_lookup(struct ksmbd_conn *conn,