From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1A2D914AD38; Thu, 23 May 2024 13:25:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716470703; cv=none; b=c+8pkpQ6GKzLNT7ErLl3VGM9zC5MWK9Ty866zSOfrle1B2Kb149sbEkkmjEuD6h4Ytx8MzkZB8Pq6NFSSo55Tp/GfL9zVyBS+ouv3F3ct6Qkn3uz9SfGQUdNt3jd2iMMIEZ6aRZXUgYjbJQyMVuLZFZAH3z1ZOqfLrGLsRxkCik= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716470703; c=relaxed/simple; bh=obhP4V58EqHvyyGo9rvZ2dydYexh4YrxrU4ZSpP0a5E=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Ipa+yC8qa+EKHttQlIP2IZqYGvm6dBja4SPeLgIALuPqZERDs917LYJtGXmLqkdNESm23uqNR8fo8FutIlVvB33UJ7qPyU2i4R1Y+uqtWFW1X2EUqAwgbZCRB+v5buamjndGqXjVp48qy+nij4Z77zE98IrsSrRmolfW7YMgtu4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=W5XngfPQ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="W5XngfPQ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 94722C2BD10; Thu, 23 May 2024 13:25:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1716470703; bh=obhP4V58EqHvyyGo9rvZ2dydYexh4YrxrU4ZSpP0a5E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=W5XngfPQxeKdKakPJxywVvAKLgplmMXu5PU6DPvmXK/YS2Swp7BZl5Ui/gJfW7UUT XHlIvi6B21WY1SaK+9MKMfGCWtcXG5QTh2kQ3JDvxX66NfTVvnxclORyXRfoBEeDFn /CQhzLbEduu6jRdCyMek/T0pMr9xqY6OvmuQXA2Y= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Namjae Jeon , Steve French , Sasha Levin Subject: [PATCH 6.6 059/102] ksmbd: mark SMB2_SESSION_EXPIRED to session when destroying previous session Date: Thu, 23 May 2024 15:13:24 +0200 Message-ID: <20240523130344.696018317@linuxfoundation.org> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240523130342.462912131@linuxfoundation.org> References: <20240523130342.462912131@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Namjae Jeon [ Upstream commit fa9415d4024fd0c58d24a4ad4f1826fb8bfcc4aa ] Currently ksmbd exit connection as well destroying previous session. When testing durable handle feaure, I found that destroy_previous_session() should destroy only session, i.e. the connection should be still alive. This patch mark SMB2_SESSION_EXPIRED on the previous session to be destroyed later and not used anymore. Signed-off-by: Namjae Jeon Signed-off-by: Steve French Signed-off-by: Sasha Levin --- fs/smb/server/mgmt/user_session.c | 27 ++++++++++++++++++++++++++- fs/smb/server/mgmt/user_session.h | 3 +++ fs/smb/server/smb2pdu.c | 24 ------------------------ 3 files changed, 29 insertions(+), 25 deletions(-) diff --git a/fs/smb/server/mgmt/user_session.c b/fs/smb/server/mgmt/user_session.c index 15f68ee050894..83074672fe812 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 +305,31 @@ 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; + + 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 63cb08fffde84..dc9fded2cd437 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, diff --git a/fs/smb/server/smb2pdu.c b/fs/smb/server/smb2pdu.c index fb9eea631069e..61717917db765 100644 --- a/fs/smb/server/smb2pdu.c +++ b/fs/smb/server/smb2pdu.c @@ -611,30 +611,6 @@ int smb2_check_user_session(struct ksmbd_work *work) return -ENOENT; } -static void destroy_previous_session(struct ksmbd_conn *conn, - struct ksmbd_user *user, u64 id) -{ - struct ksmbd_session *prev_sess = ksmbd_session_lookup_slowpath(id); - struct ksmbd_user *prev_user; - struct channel *chann; - long index; - - if (!prev_sess) - return; - - 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)) - return; - - prev_sess->state = SMB2_SESSION_EXPIRED; - xa_for_each(&prev_sess->ksmbd_chann_list, index, chann) - ksmbd_conn_set_exiting(chann->conn); -} - /** * smb2_get_name() - get filename string from on the wire smb format * @src: source buffer -- 2.43.0