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 190F138D014 for ; Sat, 28 Feb 2026 18:09:30 +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=1772302171; cv=none; b=XuPraW7SPK/xCObSafPEBWdXT1nvm1/c87xBl40EU0irQtajSkweYvV+DX8ViwVpIjObr5g3Pya1odHEbvJ3LptIsjfjFKCOhW58f7rd8TEabGLLfIqzUdEaKXpsygSgArnviv6iYrnfKAjOvCUx81UzC/8x7Max7CmnJIiXak8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772302171; c=relaxed/simple; bh=J54/ZwKQozrQf11eVW692bsgNOOSVamBOxUQ+nLO8U0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=uYmfuaFvheqBNVUVxN6MxCUbQCaYapK8wApz1LdZJ9Q/quOKhp5rtkrcoEgUkgusW8UnhfYMDKNqS6m8/cogKHIlxFfEPGSw5TCJ+tt4ZSPpSvHfbl09N4ZIazP27vr2AU0160NQFuNst8kNXukcQk2v02ynAphhkgGvg0iDPeU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Uvkm/cHf; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Uvkm/cHf" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2CA52C19423; Sat, 28 Feb 2026 18:09:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772302170; bh=J54/ZwKQozrQf11eVW692bsgNOOSVamBOxUQ+nLO8U0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Uvkm/cHfMtZwGFs9J2+bdbbYdqZgdQZ6HfzuCCCmjorjHhoxZTt0+7Ugx6jtu1Or/ WFqQjcvVOxmMo4iWjP3ksVALQk/+z/TT4egF1g86r9uvhIsc4bLmJllWdhhfl8aQA1 YT5k4dRCLXUrg+L/QOmJNMYjsBvbjIruH63Ts2eWXA0SbMxlRONIe04VjuCwkUr+Vp 7IjBGBJmY2NW0UpfVk5tLnfyJ/QWXnTIPRcI0e6hytfN13iqycDLHZ2KoLaDpaOOwJ 2u4lrLgVvN+L0vOOl4wmxXnrs9l31G8FJnnhCwz1nVLhWjgzH5qClDoyAktXF2VV4X ibyV+pDxrskug== From: Sasha Levin To: patches@lists.linux.dev Cc: Chengchang Tang , Junxian Huang , Leon Romanovsky , Sasha Levin Subject: [PATCH 6.6 168/283] RDMA/hns: Fix WQ_MEM_RECLAIM warning Date: Sat, 28 Feb 2026 13:05:10 -0500 Message-ID: <20260228180709.1583486-168-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228180709.1583486-1-sashal@kernel.org> References: <20260228180709.1583486-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Chengchang Tang [ Upstream commit c0a26bbd3f99b7b03f072e3409aff4e6ec8af6f6 ] When sunrpc is used, if a reset triggered, our wq may lead the following trace: workqueue: WQ_MEM_RECLAIM xprtiod:xprt_rdma_connect_worker [rpcrdma] is flushing !WQ_MEM_RECLAIM hns_roce_irq_workq:flush_work_handle [hns_roce_hw_v2] WARNING: CPU: 0 PID: 8250 at kernel/workqueue.c:2644 check_flush_dependency+0xe0/0x144 Call trace: check_flush_dependency+0xe0/0x144 start_flush_work.constprop.0+0x1d0/0x2f0 __flush_work.isra.0+0x40/0xb0 flush_work+0x14/0x30 hns_roce_v2_destroy_qp+0xac/0x1e0 [hns_roce_hw_v2] ib_destroy_qp_user+0x9c/0x2b4 rdma_destroy_qp+0x34/0xb0 rpcrdma_ep_destroy+0x28/0xcc [rpcrdma] rpcrdma_ep_put+0x74/0xb4 [rpcrdma] rpcrdma_xprt_disconnect+0x1d8/0x260 [rpcrdma] xprt_rdma_connect_worker+0xc0/0x120 [rpcrdma] process_one_work+0x1cc/0x4d0 worker_thread+0x154/0x414 kthread+0x104/0x144 ret_from_fork+0x10/0x18 Since QP destruction frees memory, this wq should have the WQ_MEM_RECLAIM. Fixes: ffd541d45726 ("RDMA/hns: Add the workqueue framework for flush cqe handler") Signed-off-by: Chengchang Tang Signed-off-by: Junxian Huang Link: https://patch.msgid.link/20260104064057.1582216-2-huangjunxian6@hisilicon.com Signed-off-by: Leon Romanovsky Signed-off-by: Sasha Levin --- drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c index f1d4494c7d008..2d4b751fc709d 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c @@ -6604,7 +6604,8 @@ static int hns_roce_v2_init_eq_table(struct hns_roce_dev *hr_dev) INIT_WORK(&hr_dev->ecc_work, fmea_ram_ecc_work); - hr_dev->irq_workq = alloc_ordered_workqueue("hns_roce_irq_workq", 0); + hr_dev->irq_workq = alloc_ordered_workqueue("hns_roce_irq_workq", + WQ_MEM_RECLAIM); if (!hr_dev->irq_workq) { dev_err(dev, "failed to create irq workqueue.\n"); ret = -ENOMEM; -- 2.51.0