Received: by 2002:a05:6a10:a852:0:0:0:0 with SMTP id d18csp603905pxy; Wed, 5 May 2021 09:20:26 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyLIZWv/t19hhSN5g6Rk96FQUlnsLL9ZhrAoa8vjXACXArjOgvPGqnJMj09Z7nTycFoZ/f5 X-Received: by 2002:a63:1a48:: with SMTP id a8mr29141264pgm.81.1620231626686; Wed, 05 May 2021 09:20:26 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1620231626; cv=none; d=google.com; s=arc-20160816; b=toKStLCmyjBN6MnL+9sjYigApVAASjaYiEFeAs1BWicJ70pcsg/rywUjwbJtuyBO9l 27mauGU8IDlrYHieTlabMT/VjjDCx23bS+6PN7fEvAU7l/MRVUtPBoPq9cOP4Oewm8gz eUdPxCgyvTeTMjvgBwiju8gwoL6oO/w42lh6E7aWCd2hcWVoclscg1oBFhT1lrF/RIiJ PeFawHyQ9hOlDaVNUh6z7oDME0J7aeXfkmuBi9/GRlZZmnc9uMcnoQLGHgZ4OS/InuAD egylvi0TPBmHwgH4EwzwpDleUwNfQmkhKVPTyQg6puF4D4EMkFe2198S50kONQqZ4eIZ 4xbA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=23Va0mVCnskYo2I+TS3TM7PQwk/JpLvQDeDzj0yFd6s=; b=Or0jCU/EiG9u13F9pvMc/ESKvbpr7Zm+XRetCnUwWUAjtBR5FFy2manz5v9AH3lUGs pFPd2eSdhOXcNEOJHOqem1pglKzr+GBLVnb8+foskyRW//ELqTBQu+3R4O99DM7uWHIH gK8YsQpz5++lVqegt4hInosQA/u1IaEqE8BPphsbtodFXtFco33HEGMyrFzp6bWGUokZ O36dlyx4OnbRvxOUAzExsExxQwIzoWDZkYBbjlKhXXC6vOkUVM6wf0YwBrOSV+VrapTK fTGKPdCglsAFMk6Elh5ol+sfAJa9x2P8gXLst4YATYcTKo90oBuD5tvmH8oJaf32SjGU 5O/Q== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b="ACK3h/Z1"; spf=pass (google.com: domain of linux-ext4-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-ext4-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id b12si21015334pfv.103.2021.05.05.09.20.08; Wed, 05 May 2021 09:20:26 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-ext4-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=@kernel.org header.s=k20201202 header.b="ACK3h/Z1"; spf=pass (google.com: domain of linux-ext4-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-ext4-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233902AbhEEQUo (ORCPT + 99 others); Wed, 5 May 2021 12:20:44 -0400 Received: from mail.kernel.org ([198.145.29.99]:37968 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233830AbhEEQUn (ORCPT ); Wed, 5 May 2021 12:20:43 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 9E4F46121F; Wed, 5 May 2021 16:19:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1620231587; bh=fT7+zpvoWRmNytMZL2ErSfKueKL5e/EoY6lsi8pRg/s=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ACK3h/Z1y1ei7RhZZmJay3wwC2r70Mkq1UGqC9m+8ot1a05qF/bm3MPpdKXJeY3q5 1FsDEnX0pFhV+lJYGdVNxGlfHrIm/9uu5hu0N4BWVohSfusDQdQQCch0FP/9kCrmoG 8mPufec4nnVbS/NabyXAQ3nAI3MGYTaA5NiVxQjp+uiSk56q3E4KwkqW9CAN58egCV 7S6hFJZMtBy4VS4/HfaKFW6SMj9sIj9yeBJs16kHMDxv9Ja4l9nPKLJsSuhdTmm4Hw qSmEkEYh18RYjL2Ww9hntexWe6QlOVLZBHOVuUufqvE9ay+NH9yOa9tTlP2mW0P31n eEekriI6jap5A== Date: Wed, 5 May 2021 09:19:44 -0700 From: Eric Biggers To: Anirudh Rayabharam Cc: Theodore Ts'o , Andreas Dilger , gregkh@linuxfoundation.org, linux-kernel-mentees@lists.linuxfoundation.org, syzbot+2dcfeaf8cb49b05e8f1a@syzkaller.appspotmail.com, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] ext4: fix kernel infoleak via ext4_extent_header Message-ID: References: <20210505133011.32484-1-mail@anirudhrb.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210505133011.32484-1-mail@anirudhrb.com> Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org On Wed, May 05, 2021 at 07:00:10PM +0530, Anirudh Rayabharam wrote: > Initialize eh_generation of struct ext4_extent_header to prevent leaking > info to userspace. Fixes KMSAN kernel-infoleak bug reported by syzbot at: > http://syzkaller.appspot.com/bug?id=78e9ad0e6952a3ca16e8234724b2fa92d041b9b8 > > Reported-by: syzbot+2dcfeaf8cb49b05e8f1a@syzkaller.appspotmail.com > Signed-off-by: Anirudh Rayabharam Can you include a "Fixes:" tag? - Eric