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 56F6935FF65; Tue, 6 Jan 2026 17:49:29 +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=1767721769; cv=none; b=qCxZqda21QYbgqs0I29TzXTIskKpPTGmwLYd94tsLSD2VpxGdevs2vSJtSIQaKAmWuFIl8xlwMXNLIPABgmIxGFBYK98KjZseNWT3/oTfsi/3CqhRk+tAsB7kk7K1jCvwXUuTm8BRVv+CGQkHRSwMgv5WYgmiNT7QRXgFjgM+hU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767721769; c=relaxed/simple; bh=n2aQuoJ3TiQmYdpCZzsAT3WQCRuvjVdVGg9o66k+xCU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=V1574oXSuCbbhhCqi2c398VqVnUkf93D4cFQcu/+6hyFL9kTZpjVdQeQpZU92QniS8hrnsZ65SiDdr0hAL96Mvgkb912zf+who+vuZoHJQ9gjHrd6tyLu4xQWUbxQo4rgF31xZg273WqJ/BNgzkchDo6VoTPDkhdCTVFWplgRMQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=EVixW+ry; 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="EVixW+ry" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B6648C116C6; Tue, 6 Jan 2026 17:49:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1767721769; bh=n2aQuoJ3TiQmYdpCZzsAT3WQCRuvjVdVGg9o66k+xCU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EVixW+ryPY7ik/TdZ7oTYIaYCe1xW4ujYpnBHQ45oOmVSIJzApRYYbgFic5pCxXRN b1+Asu5i6W8Grv0Ry3bNhpx2jPYEy8XUOxZxuKoAZ/8mHTcURp6JaXg8tmE00JjLXZ QSngPL1UXPdAS4hFCSj417izbH9Gts5ToglIEcj8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Konstantin Taranov , Long Li , Jason Gunthorpe , Sasha Levin Subject: [PATCH 6.18 067/312] RDMA/mana_ib: check cqe length for kernel CQs Date: Tue, 6 Jan 2026 18:02:21 +0100 Message-ID: <20260106170550.274104681@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260106170547.832845344@linuxfoundation.org> References: <20260106170547.832845344@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Konstantin Taranov [ Upstream commit 887bfe5986396aca908b7afd2d214471ba7d5544 ] Check queue size during kernel CQ creation to prevent overflow of u32. Fixes: bec127e45d9f ("RDMA/mana_ib: create kernel-level CQs") Link: https://patch.msgid.link/r/1761213780-5457-1-git-send-email-kotaranov@linux.microsoft.com Signed-off-by: Konstantin Taranov Reviewed-by: Long Li Signed-off-by: Jason Gunthorpe Signed-off-by: Sasha Levin --- drivers/infiniband/hw/mana/cq.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/infiniband/hw/mana/cq.c b/drivers/infiniband/hw/mana/cq.c index 1becc8779123..7600412b0739 100644 --- a/drivers/infiniband/hw/mana/cq.c +++ b/drivers/infiniband/hw/mana/cq.c @@ -56,6 +56,10 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, doorbell = mana_ucontext->doorbell; } else { is_rnic_cq = true; + if (attr->cqe > U32_MAX / COMP_ENTRY_SIZE / 2 + 1) { + ibdev_dbg(ibdev, "CQE %d exceeding limit\n", attr->cqe); + return -EINVAL; + } buf_size = MANA_PAGE_ALIGN(roundup_pow_of_two(attr->cqe * COMP_ENTRY_SIZE)); cq->cqe = buf_size / COMP_ENTRY_SIZE; err = mana_ib_create_kernel_queue(mdev, buf_size, GDMA_CQ, &cq->queue); -- 2.51.0