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 CE11E3314C3 for ; Sat, 28 Feb 2026 17:54:12 +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=1772301252; cv=none; b=EwSwhNPU9kYs0/tcWsgIpX/jsxPkMW+iPk0w1Gm2ko5wa6zeUO+uhVN+6iIre3y7wZPSO+4wI1IGFjXeXl9Qj6FeeakObddFagNso1rYD6CqgglHrcZ6IE6Emm0dJhIs9bFTkJzLOoq51dXDIsb+aT+2zDw3zQD4yT6TxtAHMb8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772301252; c=relaxed/simple; bh=yH2Z9AcWUq5d8W1YQjCN4M2P2vtr+m3C/YvoCnfwbgA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=AJsqgZ7+jYUiFW1rpm3ulyicxMtnGOSNTAKD7t4mwODGcDgnuy4W0vjbgrFbigJtbkRjrLR0+ypRyCLrodN1zZBPEgX/90FqowqRRQpjFzshupk1Wxijkg8L5eef3IZ9v4wsYyANmUl4yARSfueO6Bb2/iIX9eWYQxtbQEXbpUc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=tJnnAMpf; 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="tJnnAMpf" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3DE2BC19424; Sat, 28 Feb 2026 17:54:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772301252; bh=yH2Z9AcWUq5d8W1YQjCN4M2P2vtr+m3C/YvoCnfwbgA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tJnnAMpf5Jpa7ZS3ozIn/402dJ0OT/ZizQVnUZth6f+z4mtxeOaD/XeFJ75bLG1HE nl+WuZIxou1x6HbdTfWsEvyVv4PrhO9pZa2cpS72jnFsXs7i/eQNuztGrGbrMRBVp8 eqR367cFlBta0CX+kLlj6G1P4pdOvH3vY+ZMlTavctbOrJdOEcC91DogpnCjz7Crnq ypcq06xjsBsG5QX8cfxKNXMEOoQGc5r3ZhIjo4sRYVmNSrxs1o/bUtff67C/7BgAFW tCtQuS6Gh3cH1aMqMwmJQ+n2JSOK6q8D9i0LRyTOb1pJDbkGoq/ECIUcGZiUzUo8xc Xh2s+itulgyvA== From: Sasha Levin To: patches@lists.linux.dev Cc: Kamal Heib , Leon Romanovsky , Sasha Levin Subject: [PATCH 6.18 435/752] RDMA/ionic: Fix potential NULL pointer dereference in ionic_query_port Date: Sat, 28 Feb 2026 12:42:26 -0500 Message-ID: <20260228174750.1542406-435-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228174750.1542406-1-sashal@kernel.org> References: <20260228174750.1542406-1-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: Kamal Heib [ Upstream commit fd80bd7105f88189f47d465ca8cb7d115570de30 ] The function ionic_query_port() calls ib_device_get_netdev() without checking the return value which could lead to NULL pointer dereference, Fix it by checking the return value and return -ENODEV if the 'ndev' is NULL. Fixes: 2075bbe8ef03 ("RDMA/ionic: Register device ops for miscellaneous functionality") Signed-off-by: Kamal Heib Link: https://patch.msgid.link/20260220222125.16973-2-kheib@redhat.com Signed-off-by: Leon Romanovsky Signed-off-by: Sasha Levin --- drivers/infiniband/hw/ionic/ionic_ibdev.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/infiniband/hw/ionic/ionic_ibdev.c b/drivers/infiniband/hw/ionic/ionic_ibdev.c index 164046d00e5d4..bd4c73e530d08 100644 --- a/drivers/infiniband/hw/ionic/ionic_ibdev.c +++ b/drivers/infiniband/hw/ionic/ionic_ibdev.c @@ -81,6 +81,8 @@ static int ionic_query_port(struct ib_device *ibdev, u32 port, return -EINVAL; ndev = ib_device_get_netdev(ibdev, port); + if (!ndev) + return -ENODEV; if (netif_running(ndev) && netif_carrier_ok(ndev)) { attr->state = IB_PORT_ACTIVE; -- 2.51.0