From nobody Tue Feb 10 23:01:51 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BB71EC6FD1D for ; Sat, 1 Apr 2023 06:05:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231781AbjDAGFx (ORCPT ); Sat, 1 Apr 2023 02:05:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38654 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232528AbjDAGFo (ORCPT ); Sat, 1 Apr 2023 02:05:44 -0400 Received: from mail-yb1-xb4a.google.com (mail-yb1-xb4a.google.com [IPv6:2607:f8b0:4864:20::b4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7CC4E1E716 for ; Fri, 31 Mar 2023 23:05:43 -0700 (PDT) Received: by mail-yb1-xb4a.google.com with SMTP id e23-20020a25e717000000b00b66ab374ba1so24082907ybh.22 for ; Fri, 31 Mar 2023 23:05:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; t=1680329142; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=YJIKAiLrcYph4SDFvXf83ay8bL8jHgmMLaG1jX6sOx0=; b=frACg17a8pI0bbcxxKJzpQQeLf47wzT6rc2ZVp3Aaq8MfX03AmW3eP1GF68xZeBM6N n9ewuLIh9l54jBHPvslv9mMx1A/Ej8zTYEh/t6IAGO6qfydAw0wPzS48ERRVRQJSE00C YesQl6RTmnVvR4uE70swykMBPexUt58a13kSleN4aYjOgzJg9bAqlXStAUP/pLTTlLY6 4vLvdo1IxAU5ZmTqbKWUp98FeELLIX1M1z8fnAJiv83m/uqcpVvtuN77UEo/zE7k5X2M tFprKTQztNiF5Ws5gTFoju5yCH1bR1XRzna97+ZwHgJPldsiyWqYzQ9pKkKhKZ3GZ9nd 30Lw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1680329142; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=YJIKAiLrcYph4SDFvXf83ay8bL8jHgmMLaG1jX6sOx0=; b=3gUBo9/NRxSpIBDj/8fcffRKE2gaGR7mBqbI9saiFKIM0WyzsAORllfR+eN6U6j06V TDCg/VSb0xTfv3cVZQnm96YgIceqwH5CNC29HZtVilpX3HCk5rI5m4LgabICaW5evev4 6veBs/gNGE3Zw7S/7+SuWvye4axE2zbS9CdIcL2tgve3e+b2V/UBHFIebmTg8n+UYYvF +5/WQUo2+ZcadFprOGmB+HEdNzkUeGo658rgaUfdXPFec1IjcP4XiT2w+elCnSDAEjPq IwBoCFmaqAnlWF4hpLuXOM0xsqhRwQJBYwwv3qHSjkmQRF+jWZ4fYHDRGHAt1w59EVjs oaDw== X-Gm-Message-State: AAQBX9d6yI8nTS6dayYgc37SnEVIZxXfp1Jj4BJKupH+uRA/xe0OHZNq HuylH98p/9kkR8rmX66LUtJ7YWPoKcTB X-Google-Smtp-Source: AKy350ZEkYkx/cnN4LKrWExUKxfzEZ+Fbw1UrV+ww+lENePsSHSFei3i2z2m6GsTrCtyz5NuzrjcBN12YoyN X-Received: from dhavale-ctop.c.googlers.com ([fda3:e722:ac3:cc00:24:72f4:c0a8:5e39]) (user=dhavale job=sendgmr) by 2002:a81:ae60:0:b0:546:5f4d:c002 with SMTP id g32-20020a81ae60000000b005465f4dc002mr1322669ywk.10.1680329142383; Fri, 31 Mar 2023 23:05:42 -0700 (PDT) Date: Sat, 1 Apr 2023 06:05:09 +0000 In-Reply-To: <20230401060509.3608259-1-dhavale@google.com> Mime-Version: 1.0 References: <20230401060509.3608259-1-dhavale@google.com> X-Mailer: git-send-email 2.40.0.348.gf938b09366-goog Message-ID: <20230401060509.3608259-3-dhavale@google.com> Subject: [PATCH v1 2/2] usb: gadgetfs: Fix ep_read_iter to handle ITER_UBUF From: Sandeep Dhavale To: Greg Kroah-Hartman , Keith Busch , Jens Axboe Cc: Sandeep Dhavale , kernel-team@android.com, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" iov_iter for ep_read_iter can be ITER_UBUF with io_uring. In that case dup_iter() does not have to allocate iov and it can return NULL. Fix the assumption by checking for iter_is_ubuf() other wise ep_read_iter can treat this as failure and return -ENOMEM. Fixes: 1e23db450cff ("io_uring: use iter_ubuf for single range imports") Signed-off-by: Sandeep Dhavale --- drivers/usb/gadget/legacy/inode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/= inode.c index d605bc2e7e8f..28249d0bf062 100644 --- a/drivers/usb/gadget/legacy/inode.c +++ b/drivers/usb/gadget/legacy/inode.c @@ -614,7 +614,7 @@ ep_read_iter(struct kiocb *iocb, struct iov_iter *to) if (!priv) goto fail; priv->to_free =3D dup_iter(&priv->to, to, GFP_KERNEL); - if (!priv->to_free) { + if (!iter_is_ubuf(&priv->to) && !priv->to_free) { kfree(priv); goto fail; } --=20 2.40.0.348.gf938b09366-goog