Received: by 2002:a05:6a10:1d13:0:0:0:0 with SMTP id pp19csp1448796pxb; Sun, 22 Aug 2021 17:45:42 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwGhc31pafo2BKuAFnGKoBfy6xSo7jNOf+h6ZKCrhe/tjmV4eVuF7nWpKwxmobdErkHFxAp X-Received: by 2002:a02:a113:: with SMTP id f19mr27974702jag.120.1629679542619; Sun, 22 Aug 2021 17:45:42 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1629679542; cv=none; d=google.com; s=arc-20160816; b=f3xP/ikQqEWYjrujO9bNpo8+ijhVbL5iR7KsVLIxnast2q3BbOaZ1elQ+MwI1/ULTr rMnyTdBiEWCFOmy6IQE+ap2B6D3gPNKyue7+Ap7qdU21xnqljLoeIMTCLKapddgS+feF h014fR6y8gjQujDLuQmQXyjaKwilHbzRKzbGVTuclTjYs2o4Ke6TqFYtCLtU9iRwEsRp c3JS5jVqHSBGU4l4ZUxjQnISwVhQmpLpOsxWCTECDnjb+O5vpwXXPLRkgGT++pdcZEzJ Ca7aGwU+ISXkKzmWHN6Vnt7/u6ZL2gjbovHgQ0kBhyJIbaltYwkuqVutOZQmNnXSfx0q 6hAA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:to:from:subject:message-id:in-reply-to:date :mime-version; bh=Uwxvn5atNhE0NIH/RYoJlbaLRjbzmMnZlC4pPIKHaCg=; b=LBMk08qryO7HpSJvoDteVfWYCsHzUp7HcHK/mgKm+DgGXdjSoDxPHBpVaonnPvvXx3 rBer1XFKdd9RL2fYvfgL+O1gCS52rYf4Ipg8MDN8y0aKlfycgWL8uWHgcuWUnRVOVWQK tNNspWKwbyQWtnznTlw5T+uJ+6QCX8pCuRxCim5rvzX8itL3GKxo06ZEwGwhXfWCSG0Y V8AG6Qsmrcep0UzUCgxjk2rnoOzyG9YXtp93S3yHmBTbFI/b5rGFviCH3+kNEnbVkZhr EfAXS9xFHTJI4WgIihVwNB9NCOG1Z6UrjALmDjU8aQefrZyCHNu0znd5NWct5KBllXSV 2srg== ARC-Authentication-Results: i=1; mx.google.com; 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=appspotmail.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id p14si13770528ilo.31.2021.08.22.17.45.19; Sun, 22 Aug 2021 17:45:42 -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; 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=appspotmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230505AbhHWAos (ORCPT + 99 others); Sun, 22 Aug 2021 20:44:48 -0400 Received: from mail-il1-f199.google.com ([209.85.166.199]:37597 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230238AbhHWAop (ORCPT ); Sun, 22 Aug 2021 20:44:45 -0400 Received: by mail-il1-f199.google.com with SMTP id w12-20020a92ad0c000000b00227fc2e6eaeso732219ilh.4 for ; Sun, 22 Aug 2021 17:44:04 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=Uwxvn5atNhE0NIH/RYoJlbaLRjbzmMnZlC4pPIKHaCg=; b=a1eEUJ7y2Y8nuVIBxNcMeA4goLAP/haPU+niWVLJKe1ooOzwbJ4C1loA9v2bzC0y2B s4YpfeowdOIPSIcuYIdrRDwAl5pSa4wsU5ILv73QDI4jz3m0IAWrmEILAFZbTEPoRKVO OdTNTEZI4IqTq2Pf+PGXAxDk6DcsfDN8xoTX1GmCPY+lGbTv5rI0QhJ+/xaoybplfU/m YIwnCORL6uGSyMRcUov5i/eFhVeeO81FS8WFxBIDXtaw7NX3CLck68C3a6cs5ERlmgkp yVWPPzjdHi0GlZzUFjZBM+fuaekdmP/J5w6R7qSklcl3jYWHCmuuUqBHy9Q+gyJkVPjS kMUg== X-Gm-Message-State: AOAM531iWi8s0dexm9hvXd3kaiMUTAng5hqv/y3txXduu1bdLQaonmTS RCkeRCx3sPsJscaqI4xIcLXkca+RoyjvSPkoklmJFvtCaALo MIME-Version: 1.0 X-Received: by 2002:a02:2a88:: with SMTP id w130mr27207095jaw.60.1629679443921; Sun, 22 Aug 2021 17:44:03 -0700 (PDT) Date: Sun, 22 Aug 2021 17:44:03 -0700 In-Reply-To: <6e5f874d-ac61-9556-8d7e-575ec7d9682a@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000005a4e8105ca2f509c@google.com> Subject: Re: [syzbot] KASAN: stack-out-of-bounds Read in iov_iter_revert From: syzbot To: asml.silence@gmail.com, axboe@kernel.dk, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot has tested the proposed patch and the reproducer did not trigger any issue: Reported-and-tested-by: syzbot+9671693590ef5aad8953@syzkaller.appspotmail.com Tested on: commit: b917c794 io_uring: fix revert truncated vecs git tree: https://github.com/isilence/linux.git syztest_trunc2 kernel config: https://syzkaller.appspot.com/x/.config?x=4aa932b5eaeee9ef dashboard link: https://syzkaller.appspot.com/bug?extid=9671693590ef5aad8953 compiler: Debian clang version 11.0.1-2, GNU ld (GNU Binutils for Debian) 2.35.1 Note: testing is done by a robot and is best-effort only.