diff options
| -rw-r--r-- | fs/smb/server/mgmt/user_session.c | 7 | ||||
| -rw-r--r-- | fs/smb/server/smb2pdu.c | 9 | ||||
| -rw-r--r-- | fs/smb/server/transport_ipc.c | 12 |
3 files changed, 22 insertions, 6 deletions
diff --git a/fs/smb/server/mgmt/user_session.c b/fs/smb/server/mgmt/user_session.c index 6fa025374f2f..1c181ef99929 100644 --- a/fs/smb/server/mgmt/user_session.c +++ b/fs/smb/server/mgmt/user_session.c @@ -147,14 +147,11 @@ void ksmbd_session_rpc_close(struct ksmbd_session *sess, int id) int ksmbd_session_rpc_method(struct ksmbd_session *sess, int id) { struct ksmbd_session_rpc *entry; - int method; - down_read(&sess->rpc_lock); + lockdep_assert_held(&sess->rpc_lock); entry = xa_load(&sess->rpc_handle_list, id); - method = entry ? entry->method : 0; - up_read(&sess->rpc_lock); - return method; + return entry ? entry->method : 0; } void ksmbd_session_destroy(struct ksmbd_session *sess) diff --git a/fs/smb/server/smb2pdu.c b/fs/smb/server/smb2pdu.c index b731d9b09408..f901ae18e68a 100644 --- a/fs/smb/server/smb2pdu.c +++ b/fs/smb/server/smb2pdu.c @@ -4626,8 +4626,15 @@ static int smb2_get_info_file_pipe(struct ksmbd_session *sess, * pipe without opening it, checking error condition here */ id = req->VolatileFileId; - if (!ksmbd_session_rpc_method(sess, id)) + + lockdep_assert_not_held(&sess->rpc_lock); + + down_read(&sess->rpc_lock); + if (!ksmbd_session_rpc_method(sess, id)) { + up_read(&sess->rpc_lock); return -ENOENT; + } + up_read(&sess->rpc_lock); ksmbd_debug(SMB, "FileInfoClass %u, FileId 0x%llx\n", req->FileInfoClass, req->VolatileFileId); diff --git a/fs/smb/server/transport_ipc.c b/fs/smb/server/transport_ipc.c index 2aa1b29bea08..46f87fd1ce1c 100644 --- a/fs/smb/server/transport_ipc.c +++ b/fs/smb/server/transport_ipc.c @@ -825,6 +825,9 @@ struct ksmbd_rpc_command *ksmbd_rpc_write(struct ksmbd_session *sess, int handle if (!msg) return NULL; + lockdep_assert_not_held(&sess->rpc_lock); + + down_read(&sess->rpc_lock); msg->type = KSMBD_EVENT_RPC_REQUEST; req = (struct ksmbd_rpc_command *)msg->payload; req->handle = handle; @@ -833,6 +836,7 @@ struct ksmbd_rpc_command *ksmbd_rpc_write(struct ksmbd_session *sess, int handle req->flags |= KSMBD_RPC_WRITE_METHOD; req->payload_sz = payload_sz; memcpy(req->payload, payload, payload_sz); + up_read(&sess->rpc_lock); resp = ipc_msg_send_request(msg, req->handle); ipc_msg_free(msg); @@ -849,6 +853,9 @@ struct ksmbd_rpc_command *ksmbd_rpc_read(struct ksmbd_session *sess, int handle) if (!msg) return NULL; + lockdep_assert_not_held(&sess->rpc_lock); + + down_read(&sess->rpc_lock); msg->type = KSMBD_EVENT_RPC_REQUEST; req = (struct ksmbd_rpc_command *)msg->payload; req->handle = handle; @@ -856,6 +863,7 @@ struct ksmbd_rpc_command *ksmbd_rpc_read(struct ksmbd_session *sess, int handle) req->flags |= rpc_context_flags(sess); req->flags |= KSMBD_RPC_READ_METHOD; req->payload_sz = 0; + up_read(&sess->rpc_lock); resp = ipc_msg_send_request(msg, req->handle); ipc_msg_free(msg); @@ -876,6 +884,9 @@ struct ksmbd_rpc_command *ksmbd_rpc_ioctl(struct ksmbd_session *sess, int handle if (!msg) return NULL; + lockdep_assert_not_held(&sess->rpc_lock); + + down_read(&sess->rpc_lock); msg->type = KSMBD_EVENT_RPC_REQUEST; req = (struct ksmbd_rpc_command *)msg->payload; req->handle = handle; @@ -884,6 +895,7 @@ struct ksmbd_rpc_command *ksmbd_rpc_ioctl(struct ksmbd_session *sess, int handle req->flags |= KSMBD_RPC_IOCTL_METHOD; req->payload_sz = payload_sz; memcpy(req->payload, payload, payload_sz); + up_read(&sess->rpc_lock); resp = ipc_msg_send_request(msg, req->handle); ipc_msg_free(msg); |