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Fri, 30 Oct 2026 12:25:06 +0300 (MSK) Received: from DESKTOP-D46TNHI (unknown [10.198.26.228]) by new-mail.astralinux.ru (Postfix) with ESMTPA id 4jGFym3NFVz1RNM; Fri, 30 Oct 2026 12:23:44 +0300 (MSK) From: Mikhail Dmitrichenko To: stable@vger.kernel.org, Greg Kroah-Hartman Cc: Mikhail Dmitrichenko , Sasha Levin , Leon Romanovsky , Jason Gunthorpe , linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org, lvc-project@linuxtesting.org, Leon Romanovsky , Jason Gunthorpe Subject: [PATCH 5.10/5.15] =?UTF-8?q?RDMA/mlx5:=20Release=20the=20HW?= =?UTF-8?q?=E2=80=91provided=20UAR=20index=20rather=20than=20the=20SW=20on?= =?UTF-8?q?e?= Date: Fri, 30 Oct 2026 12:22:55 +0300 Message-ID: <20261030092256.404-1-mdmitrichenko@astralinux.ru> X-Mailer: git-send-email 2.54.0.windows.1 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-KSMG-AntiPhishing: NotDetected, bases: 2026/10/30 09:04:00 X-KSMG-AntiSpam-Auth: dkim=none X-KSMG-AntiSpam-Envelope-From: mdmitrichenko@astralinux.ru X-KSMG-AntiSpam-Info: LuaCore: 133 0.3.133 d508d579b02cdb6df47808421a9b9e12fc9fb75b, {diag_burst_silent}, {Tracking_one_susp_tld}, {Tracking_uf_ne_domains}, {Tracking_from_domain_doesnt_match_to}, 127.0.0.199:7.1.2;d41d8cd98f00b204e9800998ecf8427e.com:7.1.1;astralinux.ru:7.1.1;new-mail.astralinux.ru:7.1.1;patch.msgid.link:7.1.1, FromAlignment: s X-KSMG-AntiSpam-Interceptor-Info: scan successful X-KSMG-AntiSpam-Lua-Profiles: 207127 [Oct 30 2026] X-KSMG-AntiSpam-Method: none X-KSMG-AntiSpam-Rate: 0 X-KSMG-AntiSpam-Status: not_detected X-KSMG-AntiSpam-Version: 6.1.1.27 X-KSMG-AntiVirus: Kaspersky Secure Mail Gateway, version 2.1.0.7854, bases: 2026/10/30 08:35:00 #28764057 X-KSMG-AntiVirus-Status: NotDetected, skipped X-KSMG-LinksScanning: NotDetected, bases: 2026/10/30 09:04:00 X-KSMG-Message-Action: skipped X-KSMG-Rule-ID: 1 From: Leon Romanovsky commit 449ae7927152e46acbe5f19f97eafdae6d3a96b1 upstream. Free the UAR index returned by the hardware. Fixes: 4ed131d0bb15 ("IB/mlx5: Expose dynamic mmap allocation") Link: https://patch.msgid.link/r/20260611-fix-uar-release-v1-1-f5464d845dbf@nvidia.com Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe [ mdmitrichenko: Apply the index fix to mlx5_cmd_free_uar(), as 5.10 and 5.15 predate the DevX UID-aware UAR helpers. ] Signed-off-by: Mikhail Dmitrichenko --- Backport fix for CVE-2026-74296 drivers/infiniband/hw/mlx5/main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index 56151a616b07..a0d3eba45639 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -2262,7 +2262,7 @@ static int uar_mmap(struct mlx5_ib_dev *dev, enum mlx5_ib_mmap_cmd cmd, if (!dyn_uar) return err; - mlx5_cmd_free_uar(dev->mdev, idx); + mlx5_cmd_free_uar(dev->mdev, uar_index); free_bfreg: mlx5_ib_free_bfreg(dev, bfregi, bfreg_dyn_idx); -- 2.43.0