smb3: add credits we receive from oplock/break PDUs (2e5700bd) · Commits · 戴 / test

Otherwise we gradually leak credits leading to potential hung session. Signed-off-by:

Ronnie Sahlberg <lsahlber@redhat.com> CC: Stable <stable@vger.kernel.org> Reviewed-by:

fs/cifs/smb2misc.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -648,6 +648,13 @@ smb2_is_valid_oplock_break(char buffer, struct TCP_Server_Info server)
		if (rsp->sync_hdr.Command != SMB2_OPLOCK_BREAK)
		return false;

		if (rsp->sync_hdr.CreditRequest) {
		spin_lock(&server->req_lock);
		server->credits += le16_to_cpu(rsp->sync_hdr.CreditRequest);
		spin_unlock(&server->req_lock);
		wake_up(&server->request_q);
		}

		if (rsp->StructureSize !=
		smb2_rsp_struct_sizes[SMB2_OPLOCK_BREAK_HE]) {
		if (le16_to_cpu(rsp->StructureSize) == 44)