From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 74B15C433DB for ; Fri, 12 Feb 2021 13:46:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 40D7564E13 for ; Fri, 12 Feb 2021 13:46:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231451AbhBLNqK (ORCPT ); Fri, 12 Feb 2021 08:46:10 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56850 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230484AbhBLNqJ (ORCPT ); Fri, 12 Feb 2021 08:46:09 -0500 Received: from mail-ej1-x636.google.com (mail-ej1-x636.google.com [IPv6:2a00:1450:4864:20::636]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EFCB5C061756 for ; Fri, 12 Feb 2021 05:45:28 -0800 (PST) Received: by mail-ej1-x636.google.com with SMTP id b9so15658453ejy.12 for ; Fri, 12 Feb 2021 05:45:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cloud.ionos.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=GHTvRlM2/jz/bIw9TFUdKLexYFKdJGzpNqE9ekZEwUc=; b=UrVTh1uxB4DOber/D7h8vtj6A/fhZAD15AxroGCwS3qg+xtZQY2KHa2Ij9J4PUN3dx egAJVKj1eE/CtzQYZkVa7S/ZJHmCIUq87RIpJa8ek5Zjq1e52ct5R6qOndjVYrlgqx6B Lk4tIojEzZnrTYrZHBVimXwCcpggE8s66xs3tUG1Yl+h24E/uPnQEHsMlLf+GVMHWEaG MDEEe6l5rxxVr+tXlA/ZWi32v11RmngUs0WI1f9DFR0pyILCKkd5QRz43fPyvg1P4CLX 8VOZJrLLJEOrWjjfbmImTazEKoSzy+45gMmwhP3rgoCAWpWL0kBIqR0spW1pVKKRC5dZ 7oMQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=GHTvRlM2/jz/bIw9TFUdKLexYFKdJGzpNqE9ekZEwUc=; b=aBli6wULLqHqjU5YcMxtBB4RDByNIHbBuk0wCxSWQ9qUIqbpptLKQ4+FLK4JME5UUp Y5/fqqRtmWfhwm+y2ZDgRLqTkv82CNXbOwm996LC4mvOJ6SIOnJOYXzpwZQ9wpDtaOJp b95c5KX/5jOwo5OW6tghrYJMgLXbovX46kdFeCINLGGyPiVGzc1OxbqZ/NsX6halJVlR PBLMU42L6JSK3Mr9wPWlRbbufw7uqJ86Y6FSQk2Cd+akFbWFbofvh+nv1gtNexYCgtIF mA9an/nlZxy+QxBz7AXMlS1wHqBFJbTmwvb3vhmXAxaSmFYTyvXx0EDx0dihI4czCHMY NItw== X-Gm-Message-State: AOAM531oARirD0HsJ1lCYJOfJs6031dwXVhr1vCE0tuj6kLzCR5XDtK/ clspNIFhoT/1OU0yDDvuS7UWBxTG0RK8Rg== X-Google-Smtp-Source: ABdhPJwBNHGD8+UxRSRjUEMScyzglpLqdWITXcO7BIbqVrU3gCNcAXJ4ca9NAkD+gtn/yOVRjQSt/w== X-Received: by 2002:a17:906:c9cc:: with SMTP id hk12mr3206697ejb.134.1613137527344; Fri, 12 Feb 2021 05:45:27 -0800 (PST) Received: from jwang-Latitude-5491.fritz.box ([2001:16b8:49fe:3100:e80f:dbb4:eac5:c974]) by smtp.gmail.com with ESMTPSA id o4sm5856197edw.78.2021.02.12.05.45.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 05:45:26 -0800 (PST) From: Jack Wang To: linux-rdma@vger.kernel.org Cc: bvanassche@acm.org, leon@kernel.org, dledford@redhat.com, jgg@ziepe.ca, danil.kipnis@cloud.ionos.com, jinpu.wang@cloud.ionos.com, Gioh Kim , Leon Romanovsky Subject: [PATCHv2 for-next 1/4] RDMA/rtrs-srv: Fix BUG: KASAN: stack-out-of-bounds Date: Fri, 12 Feb 2021 14:45:22 +0100 Message-Id: <20210212134525.103456-2-jinpu.wang@cloud.ionos.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210212134525.103456-1-jinpu.wang@cloud.ionos.com> References: <20210212134525.103456-1-jinpu.wang@cloud.ionos.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org [ 125.352752] ================================================================== [ 125.353122] BUG: KASAN: stack-out-of-bounds in _mlx4_ib_post_send+0x1bd2/0x2770 [mlx4_ib] [ 125.353337] Read of size 4 at addr ffff8880d5a7f980 by task kworker/0:1H/565 [ 125.353655] CPU: 0 PID: 565 Comm: kworker/0:1H Tainted: G O 5.4.84-storage #5.4.84-1+feature+linux+5.4.y+dbg+20201216.1319+b6b887b~deb10 [ 125.353924] Hardware name: Supermicro H8QG6/H8QG6, BIOS 3.00 09/04/2012 [ 125.354144] Workqueue: ib-comp-wq ib_cq_poll_work [ib_core] [ 125.354317] Call Trace: [ 125.354531] dump_stack+0x96/0xe0 [ 125.354715] print_address_description.constprop.4+0x1f/0x300 [ 125.354943] ? irq_work_claim+0x2e/0x50 [ 125.355129] __kasan_report.cold.8+0x78/0x92 [ 125.355334] ? _mlx4_ib_post_send+0x1bd2/0x2770 [mlx4_ib] [ 125.355545] kasan_report+0x10/0x20 [ 125.355730] _mlx4_ib_post_send+0x1bd2/0x2770 [mlx4_ib] [ 125.355930] ? check_chain_key+0x1d7/0x2e0 [ 125.356203] ? _mlx4_ib_post_recv+0x630/0x630 [mlx4_ib] [ 125.356399] ? lockdep_hardirqs_on+0x1a8/0x290 [ 125.356595] ? stack_depot_save+0x218/0x56e [ 125.356781] ? do_profile_hits.isra.6.cold.13+0x1d/0x1d [ 125.356973] ? check_chain_key+0x1d7/0x2e0 [ 125.357174] ? save_stack+0x4d/0x80 [ 125.357374] ? save_stack+0x19/0x80 [ 125.357547] ? __kasan_slab_free+0x125/0x170 [ 125.357728] ? kfree+0xe7/0x3b0 [ 125.357899] rdma_write_sg+0x5b0/0x950 [rtrs_server] The problem is when we send imm_wr, the type should be ib_rdma_wr, so hw driver like mlx4 can do rdma_wr(wr), so fix it by use the ib_rdma_wr as type for imm_wr. Fixes: 9cb837480424 ("RDMA/rtrs: server: main functionality") Signed-off-by: Jack Wang Reviewed-by: Gioh Kim Reviewed-by: Leon Romanovsky --- drivers/infiniband/ulp/rtrs/rtrs-srv.c | 64 +++++++++++++------------- 1 file changed, 33 insertions(+), 31 deletions(-) diff --git a/drivers/infiniband/ulp/rtrs/rtrs-srv.c b/drivers/infiniband/ulp/rtrs/rtrs-srv.c index 918f1cf140cd..e13e91c2a44a 100644 --- a/drivers/infiniband/ulp/rtrs/rtrs-srv.c +++ b/drivers/infiniband/ulp/rtrs/rtrs-srv.c @@ -222,7 +222,8 @@ static int rdma_write_sg(struct rtrs_srv_op *id) dma_addr_t dma_addr = sess->dma_addr[id->msg_id]; struct rtrs_srv_mr *srv_mr; struct rtrs_srv *srv = sess->srv; - struct ib_send_wr inv_wr, imm_wr; + struct ib_send_wr inv_wr; + struct ib_rdma_wr imm_wr; struct ib_rdma_wr *wr = NULL; enum ib_send_flags flags; size_t sg_cnt; @@ -274,15 +275,15 @@ static int rdma_write_sg(struct rtrs_srv_op *id) if (need_inval && always_invalidate) { wr->wr.next = &rwr.wr; rwr.wr.next = &inv_wr; - inv_wr.next = &imm_wr; + inv_wr.next = &imm_wr.wr; } else if (always_invalidate) { wr->wr.next = &rwr.wr; - rwr.wr.next = &imm_wr; + rwr.wr.next = &imm_wr.wr; } else if (need_inval) { wr->wr.next = &inv_wr; - inv_wr.next = &imm_wr; + inv_wr.next = &imm_wr.wr; } else { - wr->wr.next = &imm_wr; + wr->wr.next = &imm_wr.wr; } /* * From time to time we have to post signaled sends, @@ -300,7 +301,7 @@ static int rdma_write_sg(struct rtrs_srv_op *id) inv_wr.ex.invalidate_rkey = rkey; } - imm_wr.next = NULL; + imm_wr.wr.next = NULL; if (always_invalidate) { struct rtrs_msg_rkey_rsp *msg; @@ -321,22 +322,22 @@ static int rdma_write_sg(struct rtrs_srv_op *id) list.addr = srv_mr->iu->dma_addr; list.length = sizeof(*msg); list.lkey = sess->s.dev->ib_pd->local_dma_lkey; - imm_wr.sg_list = &list; - imm_wr.num_sge = 1; - imm_wr.opcode = IB_WR_SEND_WITH_IMM; + imm_wr.wr.sg_list = &list; + imm_wr.wr.num_sge = 1; + imm_wr.wr.opcode = IB_WR_SEND_WITH_IMM; ib_dma_sync_single_for_device(sess->s.dev->ib_dev, srv_mr->iu->dma_addr, srv_mr->iu->size, DMA_TO_DEVICE); } else { - imm_wr.sg_list = NULL; - imm_wr.num_sge = 0; - imm_wr.opcode = IB_WR_RDMA_WRITE_WITH_IMM; + imm_wr.wr.sg_list = NULL; + imm_wr.wr.num_sge = 0; + imm_wr.wr.opcode = IB_WR_RDMA_WRITE_WITH_IMM; } - imm_wr.send_flags = flags; - imm_wr.ex.imm_data = cpu_to_be32(rtrs_to_io_rsp_imm(id->msg_id, + imm_wr.wr.send_flags = flags; + imm_wr.wr.ex.imm_data = cpu_to_be32(rtrs_to_io_rsp_imm(id->msg_id, 0, need_inval)); - imm_wr.wr_cqe = &io_comp_cqe; + imm_wr.wr.wr_cqe = &io_comp_cqe; ib_dma_sync_single_for_device(sess->s.dev->ib_dev, dma_addr, offset, DMA_BIDIRECTIONAL); @@ -363,7 +364,8 @@ static int send_io_resp_imm(struct rtrs_srv_con *con, struct rtrs_srv_op *id, { struct rtrs_sess *s = con->c.sess; struct rtrs_srv_sess *sess = to_srv_sess(s); - struct ib_send_wr inv_wr, imm_wr, *wr = NULL; + struct ib_send_wr inv_wr, *wr = NULL; + struct ib_rdma_wr imm_wr; struct ib_reg_wr rwr; struct rtrs_srv *srv = sess->srv; struct rtrs_srv_mr *srv_mr; @@ -400,15 +402,15 @@ static int send_io_resp_imm(struct rtrs_srv_con *con, struct rtrs_srv_op *id, if (need_inval && always_invalidate) { wr = &inv_wr; inv_wr.next = &rwr.wr; - rwr.wr.next = &imm_wr; + rwr.wr.next = &imm_wr.wr; } else if (always_invalidate) { wr = &rwr.wr; - rwr.wr.next = &imm_wr; + rwr.wr.next = &imm_wr.wr; } else if (need_inval) { wr = &inv_wr; - inv_wr.next = &imm_wr; + inv_wr.next = &imm_wr.wr; } else { - wr = &imm_wr; + wr = &imm_wr.wr; } /* * From time to time we have to post signalled sends, @@ -417,13 +419,13 @@ static int send_io_resp_imm(struct rtrs_srv_con *con, struct rtrs_srv_op *id, flags = (atomic_inc_return(&con->wr_cnt) % srv->queue_depth) ? 0 : IB_SEND_SIGNALED; imm = rtrs_to_io_rsp_imm(id->msg_id, errno, need_inval); - imm_wr.next = NULL; + imm_wr.wr.next = NULL; if (always_invalidate) { struct ib_sge list; struct rtrs_msg_rkey_rsp *msg; srv_mr = &sess->mrs[id->msg_id]; - rwr.wr.next = &imm_wr; + rwr.wr.next = &imm_wr.wr; rwr.wr.opcode = IB_WR_REG_MR; rwr.wr.wr_cqe = &local_reg_cqe; rwr.wr.num_sge = 0; @@ -440,21 +442,21 @@ static int send_io_resp_imm(struct rtrs_srv_con *con, struct rtrs_srv_op *id, list.addr = srv_mr->iu->dma_addr; list.length = sizeof(*msg); list.lkey = sess->s.dev->ib_pd->local_dma_lkey; - imm_wr.sg_list = &list; - imm_wr.num_sge = 1; - imm_wr.opcode = IB_WR_SEND_WITH_IMM; + imm_wr.wr.sg_list = &list; + imm_wr.wr.num_sge = 1; + imm_wr.wr.opcode = IB_WR_SEND_WITH_IMM; ib_dma_sync_single_for_device(sess->s.dev->ib_dev, srv_mr->iu->dma_addr, srv_mr->iu->size, DMA_TO_DEVICE); } else { - imm_wr.sg_list = NULL; - imm_wr.num_sge = 0; - imm_wr.opcode = IB_WR_RDMA_WRITE_WITH_IMM; + imm_wr.wr.sg_list = NULL; + imm_wr.wr.num_sge = 0; + imm_wr.wr.opcode = IB_WR_RDMA_WRITE_WITH_IMM; } - imm_wr.send_flags = flags; - imm_wr.wr_cqe = &io_comp_cqe; + imm_wr.wr.send_flags = flags; + imm_wr.wr.wr_cqe = &io_comp_cqe; - imm_wr.ex.imm_data = cpu_to_be32(imm); + imm_wr.wr.ex.imm_data = cpu_to_be32(imm); err = ib_post_send(id->con->c.qp, wr, NULL); if (unlikely(err)) -- 2.25.1