From patchwork Thu Oct 13 04:03:33 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li Zhijian X-Patchwork-Id: 13005599 X-Patchwork-Delegate: jgg@ziepe.ca Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B031AC433FE for ; Thu, 13 Oct 2022 04:03:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229537AbiJMEDr (ORCPT ); Thu, 13 Oct 2022 00:03:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46722 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229485AbiJMEDq (ORCPT ); Thu, 13 Oct 2022 00:03:46 -0400 Received: from esa2.hc1455-7.c3s2.iphmx.com (esa2.hc1455-7.c3s2.iphmx.com [207.54.90.48]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8657A12572A; Wed, 12 Oct 2022 21:03:44 -0700 (PDT) X-IronPort-AV: E=McAfee;i="6500,9779,10498"; a="91960174" X-IronPort-AV: E=Sophos;i="5.95,180,1661785200"; d="scan'208";a="91960174" Received: from unknown (HELO yto-r3.gw.nic.fujitsu.com) ([218.44.52.219]) by esa2.hc1455-7.c3s2.iphmx.com with ESMTP; 13 Oct 2022 13:03:42 +0900 Received: from yto-m2.gw.nic.fujitsu.com (yto-nat-yto-m2.gw.nic.fujitsu.com [192.168.83.65]) by yto-r3.gw.nic.fujitsu.com (Postfix) with ESMTP id DCBFFD5030; Thu, 13 Oct 2022 13:03:40 +0900 (JST) Received: from aks-ab2.gw.nic.fujitsu.com (aks-ab2.gw.nic.fujitsu.com [192.51.207.12]) by yto-m2.gw.nic.fujitsu.com (Postfix) with ESMTP id 1568AD9C03; Thu, 13 Oct 2022 13:03:40 +0900 (JST) Received: from FNSTPC.g08.fujitsu.local (unknown [10.167.226.45]) by aks-ab2.gw.nic.fujitsu.com (Postfix) with ESMTP id C2BDF87048; Thu, 13 Oct 2022 13:03:37 +0900 (JST) From: Li Zhijian To: zyjzyj2000@gmail.com, jgg@ziepe.ca, leon@kernel.org, linux-rdma@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Li Zhijian , Bob Pearson Subject: [PATCH for-next] RDMA/rxe: Fix mr leak in RESPST_ERR_RNR Date: Thu, 13 Oct 2022 12:03:33 +0800 Message-Id: <20221013040333.21097-1-lizhijian@fujitsu.com> X-Mailer: git-send-email 2.36.0 MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-TM-AS-Product-Ver: IMSS-9.1.0.1408-9.0.0.1002-27198.004 X-TM-AS-User-Approved-Sender: Yes X-TMASE-Version: IMSS-9.1.0.1408-9.0.1002-27198.004 X-TMASE-Result: 10-0.562800-10.000000 X-TMASE-MatchedRID: mkGkedb7C37yAV/ow31xq+9kW9mxCQvtndls9F9zmi2jEIt+uIPPOIre 5xUTEbm3PnkLz0tiKhf4k1dYqOhY3WYeY1r5+Sd7hdD+G7U5X/Sc/8UYyRuho3yL2uleGLJnvwU evDt+uW5BOd+wdG/d+4uaJ190E6oxsQJKRUFJrtWeAiCmPx4NwJuJ+Pb8n/VxSnQ4MjwaO9cqtq 5d3cxkNX/QRe2mNLkbCHJyZUrnVkbKPpz2FyiIpTJEZfUHhIY966G52LtJf1QOFZncc6xK02tCz w6OQAYZJe/4x0k9v5sh49dGb9sr6f8jyjqYHnMRFcUQf3Yp/ridO0/GUi4gFb0fOPzpgdcEKeJ/ HkAZ8Is= X-TMASE-SNAP-Result: 1.821001.0001-0-1-22:0,33:0,34:0-0 Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org rxe_recheck_mr() will increase mr's ref_cnt, so we should call rxe_put(mr) to drop mr's ref_cnt in RESPST_ERR_RNR to avoid below warning: [ 633.447883] WARNING: CPU: 0 PID: 4156 at drivers/infiniband/sw/rxe/rxe_pool.c:259 __rxe_cleanup+0x1df/0x240 [rdma_rxe] ... [ 633.509482] Call Trace: [ 633.510246] [ 633.510962] rxe_dereg_mr+0x4c/0x60 [rdma_rxe] [ 633.512123] ib_dereg_mr_user+0xa8/0x200 [ib_core] [ 633.513444] ib_mr_pool_destroy+0x77/0xb0 [ib_core] [ 633.514763] nvme_rdma_destroy_queue_ib+0x89/0x240 [nvme_rdma] [ 633.516230] nvme_rdma_free_queue+0x40/0x50 [nvme_rdma] [ 633.517577] nvme_rdma_teardown_io_queues.part.0+0xc3/0x120 [nvme_rdma] [ 633.519204] nvme_rdma_error_recovery_work+0x4d/0xf0 [nvme_rdma] [ 633.520695] process_one_work+0x582/0xa40 [ 633.522987] ? pwq_dec_nr_in_flight+0x100/0x100 [ 633.524227] ? rwlock_bug.part.0+0x60/0x60 [ 633.525372] worker_thread+0x2a9/0x700 [ 633.526437] ? process_one_work+0xa40/0xa40 [ 633.527589] kthread+0x168/0x1a0 [ 633.528518] ? kthread_complete_and_exit+0x20/0x20 [ 633.529792] ret_from_fork+0x22/0x30 CC: Bob Pearson Fixes: 8a1a0be894da ("RDMA/rxe: Replace mr by rkey in responder resources") Signed-off-by: Li Zhijian --- drivers/infiniband/sw/rxe/rxe_resp.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/sw/rxe/rxe_resp.c b/drivers/infiniband/sw/rxe/rxe_resp.c index ed5a09e86417..bbb9665c64ad 100644 --- a/drivers/infiniband/sw/rxe/rxe_resp.c +++ b/drivers/infiniband/sw/rxe/rxe_resp.c @@ -806,8 +806,11 @@ static enum resp_states read_reply(struct rxe_qp *qp, skb = prepare_ack_packet(qp, &ack_pkt, opcode, payload, res->cur_psn, AETH_ACK_UNLIMITED); - if (!skb) + if (!skb) { + if (mr) + rxe_put(mr); return RESPST_ERR_RNR; + } rxe_mr_copy(mr, res->read.va, payload_addr(&ack_pkt), payload, RXE_FROM_MR_OBJ);