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 92BB626462E for ; Tue, 8 Apr 2025 08:18:25 +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=1744100305; cv=none; b=nglmqmddgDBbIYVmX8WiOIPU90T3YCi54YBLiyxIpXUvicPXtPrUBK9WMbizCXpCNRkJUHAB/JF7xoTRG22YO5DnlAZocVdvBKxeZE89465p6QLyIv9QAcQSkNupSwdMUFgTIkiNE5sQPcZWWXp2O2nnGk8+7Bdq+UfHfDxSrSs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744100305; c=relaxed/simple; bh=WXC62TsDMwE4+anx16B1rlkvdb31GDdnW8sf6a567Hc=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=lcYsJFHMq/yCh9MaFb+NHSOSuoE6mIJFsCVreR6nto85eqHpZYYzSQ5+sBK10c876Nhl2wxJvQ89o+NTR5YHvTHbmcRLkrAJ10gyFV3NiMTKQGAGcmovqZI14yZE9+u1f8gnkfiGrRv56U0jm/nG+6PtYmmSWgJiFfzFt6JtCZE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=zT1Zbl1c; 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="zT1Zbl1c" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 156E9C4CEE5; Tue, 8 Apr 2025 08:18:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1744100305; bh=WXC62TsDMwE4+anx16B1rlkvdb31GDdnW8sf6a567Hc=; h=From:To:Cc:Subject:Date:Reply-to:From; b=zT1Zbl1cCtB6Uxap/F+dKLyh6yGR3zZvfd0rtraB7VE98FwX06ZgMFVM8KIq2+oNJ Yxk4A0x4iYV3X6cHXIWx9CMJh4CwDcn5KF+4IWQs9/aX/IFnRAAW09Y4YKjFD9tZ+V Zu7Goc7wx9HuAuSj0riZKLk3h9cOjqsirKHvwwJ8= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2025-22010: RDMA/hns: Fix soft lockup during bt pages loop Date: Tue, 8 Apr 2025 10:16:44 +0200 Message-ID: <2025040843-CVE-2025-22010-82d7@gregkh> X-Mailer: git-send-email 2.49.0 Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Reply-to: , X-Developer-Signature: v=1; a=openpgp-sha256; l=3731; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=WXC62TsDMwE4+anx16B1rlkvdb31GDdnW8sf6a567Hc=; b=owGbwMvMwCRo6H6F97bub03G02pJDOlfbmfzbmpbkdTdHVXzfW7B6fgpLe8UH/zPsDn+QfX1T p9Y8b0zO2JZGASZGGTFFFm+bOM5ur/ikKKXoe1pmDmsTCBDGLg4BWAiElkMC065+zUJPS8IXBdl 4bLC9DfzAvuMpwwLZl4LOaN57tc78Q/8Vg8/bN/P/jGOBQA= X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit Description =========== In the Linux kernel, the following vulnerability has been resolved: RDMA/hns: Fix soft lockup during bt pages loop Driver runs a for-loop when allocating bt pages and mapping them with buffer pages. When a large buffer (e.g. MR over 100GB) is being allocated, it may require a considerable loop count. This will lead to soft lockup: watchdog: BUG: soft lockup - CPU#27 stuck for 22s! ... Call trace: hem_list_alloc_mid_bt+0x124/0x394 [hns_roce_hw_v2] hns_roce_hem_list_request+0xf8/0x160 [hns_roce_hw_v2] hns_roce_mtr_create+0x2e4/0x360 [hns_roce_hw_v2] alloc_mr_pbl+0xd4/0x17c [hns_roce_hw_v2] hns_roce_reg_user_mr+0xf8/0x190 [hns_roce_hw_v2] ib_uverbs_reg_mr+0x118/0x290 watchdog: BUG: soft lockup - CPU#35 stuck for 23s! ... Call trace: hns_roce_hem_list_find_mtt+0x7c/0xb0 [hns_roce_hw_v2] mtr_map_bufs+0xc4/0x204 [hns_roce_hw_v2] hns_roce_mtr_create+0x31c/0x3c4 [hns_roce_hw_v2] alloc_mr_pbl+0xb0/0x160 [hns_roce_hw_v2] hns_roce_reg_user_mr+0x108/0x1c0 [hns_roce_hw_v2] ib_uverbs_reg_mr+0x120/0x2bc Add a cond_resched() to fix soft lockup during these loops. In order not to affect the allocation performance of normal-size buffer, set the loop count of a 100GB MR as the threshold to call cond_resched(). The Linux kernel CVE team has assigned CVE-2025-22010 to this issue. Affected and fixed versions =========================== Issue introduced in 5.3 with commit 38389eaa4db192648916464b60f6086d6bbaa6de and fixed in 6.1.132 with commit 4104b0023ff66b5df900d23dbf38310893deca79 Issue introduced in 5.3 with commit 38389eaa4db192648916464b60f6086d6bbaa6de and fixed in 6.6.85 with commit 975355faba56c0751292ed15a90c3e2c7dc0aad6 Issue introduced in 5.3 with commit 38389eaa4db192648916464b60f6086d6bbaa6de and fixed in 6.12.21 with commit 13a52f6c9ff99f7d88f81da535cb4e85eade662b Issue introduced in 5.3 with commit 38389eaa4db192648916464b60f6086d6bbaa6de and fixed in 6.13.9 with commit 9ab20fec7a1ce3057ad86afd27bfd08420b7cd11 Issue introduced in 5.3 with commit 38389eaa4db192648916464b60f6086d6bbaa6de and fixed in 6.14 with commit 25655580136de59ec89f09089dd28008ea440fc9 Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2025-22010 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: drivers/infiniband/hw/hns/hns_roce_hem.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/4104b0023ff66b5df900d23dbf38310893deca79 https://git.kernel.org/stable/c/975355faba56c0751292ed15a90c3e2c7dc0aad6 https://git.kernel.org/stable/c/13a52f6c9ff99f7d88f81da535cb4e85eade662b https://git.kernel.org/stable/c/9ab20fec7a1ce3057ad86afd27bfd08420b7cd11 https://git.kernel.org/stable/c/25655580136de59ec89f09089dd28008ea440fc9