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 D44D3198A35; Thu, 6 Jun 2024 14:16:35 +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=1717683395; cv=none; b=LUa5caFNqKLaI1wEumJekX9W5SSWqtx6LsI/KIQIxVY0WJZh7OLH1hKOzRaDWHZjIndL+Xz9WdLEiBNOaLx1/fuTHM8zrfJNYFoF+HP5kXgnMx6sxDITQTVQTE7WwW8+JrJtI/3f//ERyGDC1v70Ev9XmFDUVw8kFQ8R7WGQAe4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717683395; c=relaxed/simple; bh=b8HBJz/y+mQ18Q3Um9C7nwqy3K7OFM//de6/DoPG7xI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=h+x+jkTKvQ5WxglCFOQQHnPhDOfNBcMLI6d6hbfcu8PDrvCbfdiuc/SG9i7O1tTjZ6FwINmtJB98zMy7HAyUxMfMjjiIcUJ6fAyzJbR6hGDCRzWDnbEqsOEHGE8uU3hbVqbtQ3Qn4YEUboR3+55ynySSNbZ9c3JXB16sIRPDeeQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=T4o6iml/; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="T4o6iml/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B1B09C2BD10; Thu, 6 Jun 2024 14:16:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1717683395; bh=b8HBJz/y+mQ18Q3Um9C7nwqy3K7OFM//de6/DoPG7xI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=T4o6iml/IEDTWuLVerUrs2FO4uX6N77AhKt7BaDcwwuMYmTYzIGuMjvK7O04Jk1ei 2Ud0+JqVZryLCWut01HzGLtVQsJCNWolGbz+g0rsCUFjP3yvG1bmOZhop3FfKjTn7g XkZ/8hS2FUjK1LsEf5llP1lSIOzGjdcq0YnpbMPg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Chengchang Tang , Junxian Huang , Leon Romanovsky , Sasha Levin Subject: [PATCH 6.6 340/744] RDMA/hns: Fix deadlock on SRQ async events. Date: Thu, 6 Jun 2024 16:00:12 +0200 Message-ID: <20240606131743.372350853@linuxfoundation.org> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240606131732.440653204@linuxfoundation.org> References: <20240606131732.440653204@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Chengchang Tang [ Upstream commit b46494b6f9c19f141114a57729e198698f40af37 ] xa_lock for SRQ table may be required in AEQ. Use xa_store_irq()/ xa_erase_irq() to avoid deadlock. Fixes: 81fce6291d99 ("RDMA/hns: Add SRQ asynchronous event support") Signed-off-by: Chengchang Tang Signed-off-by: Junxian Huang Link: https://lore.kernel.org/r/20240412091616.370789-5-huangjunxian6@hisilicon.com Signed-off-by: Leon Romanovsky Signed-off-by: Sasha Levin --- drivers/infiniband/hw/hns/hns_roce_main.c | 1 + drivers/infiniband/hw/hns/hns_roce_srq.c | 6 +++--- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c index 4a9cd4d21bc99..c8c49110a3378 100644 --- a/drivers/infiniband/hw/hns/hns_roce_main.c +++ b/drivers/infiniband/hw/hns/hns_roce_main.c @@ -37,6 +37,7 @@ #include #include #include +#include "hnae3.h" #include "hns_roce_common.h" #include "hns_roce_device.h" #include "hns_roce_hem.h" diff --git a/drivers/infiniband/hw/hns/hns_roce_srq.c b/drivers/infiniband/hw/hns/hns_roce_srq.c index 8dae98f827eb2..6a4923c21cbc6 100644 --- a/drivers/infiniband/hw/hns/hns_roce_srq.c +++ b/drivers/infiniband/hw/hns/hns_roce_srq.c @@ -122,7 +122,7 @@ static int alloc_srqc(struct hns_roce_dev *hr_dev, struct hns_roce_srq *srq) return ret; } - ret = xa_err(xa_store(&srq_table->xa, srq->srqn, srq, GFP_KERNEL)); + ret = xa_err(xa_store_irq(&srq_table->xa, srq->srqn, srq, GFP_KERNEL)); if (ret) { ibdev_err(ibdev, "failed to store SRQC, ret = %d.\n", ret); goto err_put; @@ -135,7 +135,7 @@ static int alloc_srqc(struct hns_roce_dev *hr_dev, struct hns_roce_srq *srq) return 0; err_xa: - xa_erase(&srq_table->xa, srq->srqn); + xa_erase_irq(&srq_table->xa, srq->srqn); err_put: hns_roce_table_put(hr_dev, &srq_table->table, srq->srqn); @@ -153,7 +153,7 @@ static void free_srqc(struct hns_roce_dev *hr_dev, struct hns_roce_srq *srq) dev_err(hr_dev->dev, "DESTROY_SRQ failed (%d) for SRQN %06lx\n", ret, srq->srqn); - xa_erase(&srq_table->xa, srq->srqn); + xa_erase_irq(&srq_table->xa, srq->srqn); if (refcount_dec_and_test(&srq->refcount)) complete(&srq->free); -- 2.43.0