From nobody Wed Feb 11 02:06:19 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 119ACC76196 for ; Sat, 1 Apr 2023 06:05:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232670AbjDAGFn (ORCPT ); Sat, 1 Apr 2023 02:05:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38580 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229583AbjDAGFk (ORCPT ); Sat, 1 Apr 2023 02:05:40 -0400 Received: from mail-pj1-x104a.google.com (mail-pj1-x104a.google.com [IPv6:2607:f8b0:4864:20::104a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8F6CE1E716 for ; Fri, 31 Mar 2023 23:05:37 -0700 (PDT) Received: by mail-pj1-x104a.google.com with SMTP id d13-20020a17090ad98d00b00240922fdb7cso7495612pjv.6 for ; Fri, 31 Mar 2023 23:05:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; t=1680329137; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=nzj9Fg3GaIV9NE2Q/zhkZ2tE1+n4uT9HgOjZrVlSexY=; b=a+B/eYfLO/QRcC2R3kk9NVzQz2ZbJaoghwKedq2mxrvnt1fQ7X76yzOyktp3FTrfZJ lXOAhtIJgjpaznN4gd0nxR7Def4aezPHYphl+ftF1NWyx0e/fN7tNE68F7eCkX9UEhWL umWGKN4TuxXJtCbZzrK0hb2vPU+lG49Rz9r6W0Zb5xAcOuMHAIDd8AdKCDzjBhtR5tY7 74PoftD/PfUW/5VHfWz06fpLSMMH5j2dggJEUDKepMqqBWXRsLI0rcrGYn91dOWD1f7P yPLdRKBLjnB2IChd8iaZ+LHB7yNrPqLFuHdZ6N6ByM/khZ03IAGUzzC3dOGq7E4CjMdK UttQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1680329137; 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=nzj9Fg3GaIV9NE2Q/zhkZ2tE1+n4uT9HgOjZrVlSexY=; b=asdnPtaA0B/qfjl+D8k48iIGihrSL1MJXPq6HBlJJMTtF9LWiF9/Rfzz0BWraiEMzu z8u2HmhCToP14pSvifeyPku7SYO/71h+PfVCFQui8mSr+M3RGMRTz0NxPhFBetzdyJx4 Jfgx1uOZhEppQeaJF8LcAD5UpFsjrZ2bMV2K1ZXtmAZ1uPiYiYXywMA+F6vwOkIRkoXI 4wMNWHkUmmVVxMdkfMllPrI+WMkxodBb7QSbJdh25FyaX+EA7F6NDGx7/k9QdMOrwmMo LaIEhjPbjuNFONN09LvXT4xAPSOFye/n49YaPBnIxE3sLfg5DALLaJenZZFofbuFfi+P t9wA== X-Gm-Message-State: AAQBX9e5+jDPNT7Enc+9NLKAEXpZxe9PCoJuVhBHXZk4MQkfOvasgo7r QntphGy3ZkybNICmj0UFY3QsaWfEcLhc X-Google-Smtp-Source: AKy350ZHfWs0860/xrymzSKCPQKop/B7XtT0OncKiX+Pf72FRIpkclD9sEc9SXlIlKdxX1csdPDiXRq/uB17 X-Received: from dhavale-ctop.c.googlers.com ([fda3:e722:ac3:cc00:24:72f4:c0a8:5e39]) (user=dhavale job=sendgmr) by 2002:a17:902:7c81:b0:1a1:f44c:8b98 with SMTP id y1-20020a1709027c8100b001a1f44c8b98mr9863957pll.12.1680329137028; Fri, 31 Mar 2023 23:05:37 -0700 (PDT) Date: Sat, 1 Apr 2023 06:05:08 +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: <20230401060509.3608259-2-dhavale@google.com> Subject: [PATCH v1 1/2] usb: gadget: f_fs: Fix ffs_epfile_read_iter to handle ITER_UBUF From: Sandeep Dhavale To: Greg Kroah-Hartman , Jens Axboe , Keith Busch 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 ffs_epfile_read_iter can be ITER_UBUF with io_uring. In that case dup_iter() does not have to allocate anything and it can return NULL. ffs_epfile_read_iter treats this as a failure and returns -ENOMEM. Fix it by checking if iter_is_ubuf(). Fixes: 1e23db450cff ("io_uring: use iter_ubuf for single range imports") Signed-off-by: Sandeep Dhavale --- drivers/usb/gadget/function/f_fs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/functi= on/f_fs.c index 8830847fbf97..a13c946e0663 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -1230,7 +1230,7 @@ static ssize_t ffs_epfile_read_iter(struct kiocb *kio= cb, struct iov_iter *to) p->kiocb =3D kiocb; if (p->aio) { p->to_free =3D dup_iter(&p->data, to, GFP_KERNEL); - if (!p->to_free) { + if (!iter_is_ubuf(&p->data) && !p->to_free) { kfree(p); return -ENOMEM; } --=20 2.40.0.348.gf938b09366-goog