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[23.128.96.18]) by mx.google.com with ESMTP id y24si4996150pgi.380.2021.04.23.13.51.04; Fri, 23 Apr 2021 13:51:17 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@intel-com.20150623.gappssmtp.com header.s=20150623 header.b=pLbnPslx; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232523AbhDWUu2 (ORCPT + 99 others); Fri, 23 Apr 2021 16:50:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41810 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229691AbhDWUuY (ORCPT ); Fri, 23 Apr 2021 16:50:24 -0400 Received: from mail-ed1-x52d.google.com (mail-ed1-x52d.google.com [IPv6:2a00:1450:4864:20::52d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D4B88C061574 for ; Fri, 23 Apr 2021 13:49:46 -0700 (PDT) Received: by mail-ed1-x52d.google.com with SMTP id g17so58162678edm.6 for ; Fri, 23 Apr 2021 13:49:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=intel-com.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=fm0PKuYIAac9ltnrpGnQKG+HA7pEHPssT5UYNO5GgT8=; b=pLbnPslxXLs5tizh+7TJazxxRde79HZ1ATziMVDbUDxK4lvVO62Ke0IW7N5pPhtVbC K6h3wqplK47FgfQTYrj8JKCyqIR59w1FgbgaveJXD5pZHFKZyUYM+6o6pZKk321NgNkF XmrjP0UdPmm/EQFrdyAAGn0EGnT2MhrcUFYtphKi3GFReZO2nOe0s3aqLi6ghqM3xjVR b0rl6UezVH/3RQtn9ug1WTlHmzg/C+/kd2q5HTd89dP24n6CXUv1DIv1t/+oVTVDeQCf ysKnVikQabwsbcNGH9kG3LJOALsutqKjaQU/pMcA+Jvmo2qGUEo4jIdhU45s60l4f6Io fvxg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=fm0PKuYIAac9ltnrpGnQKG+HA7pEHPssT5UYNO5GgT8=; b=gMbd+7IQ+V07jk2pyt/l8gTc8qDaD7kqOHGfFrxhTzTT1YeBP+BJcb5TY9CFIGqP5f FZJ+LewFfgoYgT5bD2KM1b/euRoOKn6jb5rcXR7oMdXB06Ls2VZVaKkal6sbBTPnTV2+ a40KWrZy0jmA5AZkcMQvwXXhjUtGQIxNTS8kwUHmXNkqT5qdpw1ZTmi1SSln/zqW/d2X K/OQUfsEixqqvQorPwXugUth5pAHPn2VXPh97zNvjN4mUfJsL1uP33tlcGbmRB1magOR CMcq2LATFo+qaNtNtwzrvfjDILqTp7RVjyM1JMScduwQTFDYoNzsALwppGVTPFcGSBdP lzWQ== X-Gm-Message-State: AOAM531FD40ts4ZcjdmkYb0Ahyybr6Hl/b2dlTfF/F/yiF+f2l8DQWS0 qHAoYghGUNk/2C/2hAg71t7xu3oUHzaOAwcSE9fWkQ== X-Received: by 2002:a50:e607:: with SMTP id y7mr6781566edm.18.1619210985439; Fri, 23 Apr 2021 13:49:45 -0700 (PDT) MIME-Version: 1.0 References: <20210421130105.1226686-1-gregkh@linuxfoundation.org> <20210421130105.1226686-106-gregkh@linuxfoundation.org> In-Reply-To: <20210421130105.1226686-106-gregkh@linuxfoundation.org> From: Dan Williams Date: Fri, 23 Apr 2021 13:49:39 -0700 Message-ID: Subject: Re: [PATCH 105/190] Revert "libnvdimm/btt: Fix a kmemdup failure check" To: Greg Kroah-Hartman Cc: Linux Kernel Mailing List , Aditya Pakki Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Apr 21, 2021 at 6:08 AM Greg Kroah-Hartman wrote: > > This reverts commit 486fa92df4707b5df58d6508728bdb9321a59766. > > Commits from @umn.edu addresses have been found to be submitted in "bad > faith" to try to test the kernel community's ability to review "known > malicious" changes. The result of these submissions can be found in a > paper published at the 42nd IEEE Symposium on Security and Privacy > entitled, "Open Source Insecurity: Stealthily Introducing > Vulnerabilities via Hypocrite Commits" written by Qiushi Wu (University > of Minnesota) and Kangjie Lu (University of Minnesota). > > Because of this, all submissions from this group must be reverted from > the kernel tree and will need to be re-reviewed again to determine if > they actually are a valid fix. Until that work is complete, remove this > change to ensure that no problems are being introduced into the > codebase. > > Cc: Aditya Pakki > Cc: Dan Williams > Signed-off-by: Greg Kroah-Hartman Upon re-review, this fix still looks good to me, revert is not necessary. > --- > drivers/nvdimm/btt_devs.c | 18 +++++------------- > 1 file changed, 5 insertions(+), 13 deletions(-) > > diff --git a/drivers/nvdimm/btt_devs.c b/drivers/nvdimm/btt_devs.c > index 05feb97e11ce..995573905dfb 100644 > --- a/drivers/nvdimm/btt_devs.c > +++ b/drivers/nvdimm/btt_devs.c > @@ -191,15 +191,14 @@ static struct device *__nd_btt_create(struct nd_region *nd_region, > return NULL; > > nd_btt->id = ida_simple_get(&nd_region->btt_ida, 0, 0, GFP_KERNEL); > - if (nd_btt->id < 0) > - goto out_nd_btt; > + if (nd_btt->id < 0) { > + kfree(nd_btt); > + return NULL; > + } > > nd_btt->lbasize = lbasize; > - if (uuid) { > + if (uuid) > uuid = kmemdup(uuid, 16, GFP_KERNEL); > - if (!uuid) > - goto out_put_id; > - } > nd_btt->uuid = uuid; > dev = &nd_btt->dev; > dev_set_name(dev, "btt%d.%d", nd_region->id, nd_btt->id); > @@ -213,13 +212,6 @@ static struct device *__nd_btt_create(struct nd_region *nd_region, > return NULL; > } > return dev; > - > -out_put_id: > - ida_simple_remove(&nd_region->btt_ida, nd_btt->id); > - > -out_nd_btt: > - kfree(nd_btt); > - return NULL; > } > > struct device *nd_btt_create(struct nd_region *nd_region) > -- > 2.31.1 >