From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 033DBC43381 for ; Sun, 17 Mar 2019 20:49:04 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 95D4C2087C for ; Sun, 17 Mar 2019 20:49:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 95D4C2087C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 083AA6B0005; Sun, 17 Mar 2019 16:49:03 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 034896B0006; Sun, 17 Mar 2019 16:49:02 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E66C06B0007; Sun, 17 Mar 2019 16:49:02 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from mail-it1-f199.google.com (mail-it1-f199.google.com [209.85.166.199]) by kanga.kvack.org (Postfix) with ESMTP id BE1D66B0005 for ; Sun, 17 Mar 2019 16:49:02 -0400 (EDT) Received: by mail-it1-f199.google.com with SMTP id y6so10533278itj.5 for ; Sun, 17 Mar 2019 13:49:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-original-authentication-results:x-gm-message-state:mime-version :date:in-reply-to:message-id:subject:from:to; bh=AdDJQGRn1HKxzvaNiNMtuUjAUxpN+UvUqzicULcWxYI=; b=B42UuTs4tXXF44XEXXWY4Eb4vewEodw/WewsajaTqz6LJPPT2ZuwIPwAkO0VeXoJkL YbKvYaRf8lTuXpVuQ7OPPu9tMKNXNQwA2wqZdq9W7KLT1dnizHOzLAcBHiDO2CZw58Rd K29MPritZ4UyXguc18e1mPVk11nBronSFkDvwwBSyAmtZNjIMoth0bfWzX86F1GBNse0 6rK3Eg1soH7WM6Tmy8tdjCPOiTAmhLX0gAiAmGwt9ActSWKp0fvreL4Xdi6xKKBAMzIo AKABRJwjaUfgBeye3MWUT0uj3hc2ZgB4j6f7hme9oTs9XpNyRdUmyEFaSB+mO9zNh+BN N+fw== X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of 3vbkoxakbaeg289ukvvo1kzzsn.qyyqvo42o1myx3ox3.myw@m3kw2wvrgufz5godrsrytgd7.apphosting.bounces.google.com designates 209.85.220.69 as permitted sender) smtp.mailfrom=3vbKOXAkbAEg289ukvvo1kzzsn.qyyqvo42o1myx3ox3.myw@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com X-Gm-Message-State: APjAAAXK7icI8DClW9RznOI2Z17Zl70ADGnU+XjHoeZ3YqT7qOvdaQZc 70QqnPb2odm2Uvj/ppLp9wPONXztBWpV5ugsUTyPotp+5Qrs2b9QhbCiw0ys7p0b2b4JsODjTcv XKv0S9kZWi+StZ42WKO3Fgqf544qA9zaPV6h37+UV3TVUyJj7pDKXQmRRjc8jot0= X-Received: by 2002:a24:4643:: with SMTP id j64mr8089366itb.74.1552855742542; Sun, 17 Mar 2019 13:49:02 -0700 (PDT) X-Received: by 2002:a24:4643:: with SMTP id j64mr8089349itb.74.1552855741732; Sun, 17 Mar 2019 13:49:01 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1552855741; cv=none; d=google.com; s=arc-20160816; b=S7TMkYJK0mj4DA/pxYukN/TMBIv3XOE+jW6jvWGR2cEoX31qiHaeX0bes1TLwO+wQX 7i78OO2GoM4U9RHyHGtdCT43RvEdvg7lg8sO7F7tDhiPtRVJktvUFATVcNK1cUcRpNLY dcvWUpPDx2FTktut33NzFw9ILxgIpCvblobtHjW+TabG4smG0CW47ZVRIjfPFgTFlr7/ QMv9pqA1IWAf4oOOY3uvkaAC0Gx0UlIfY1s3XvWbRp5x32TGB3oMfoLpg75RdCp232K1 pYswwgPnmAfwNRdXEMe+6VTNDBrYGEvOFLMZbWu5lLVpPaYf76f8JrHBeI0v3rn3zhFH eP5A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=to:from:subject:message-id:in-reply-to:date:mime-version; bh=AdDJQGRn1HKxzvaNiNMtuUjAUxpN+UvUqzicULcWxYI=; b=ImbNKRp2e+iwH357gtDYwqAL5ZRgByt1a8aZ+Ad1Cb5/J+mUNszdC0fe3ixuERh8wG J7cejoi692cUlvuZIgtbaHDOxZh/N1PjlAQM7f+Xs0cAydnEuWfmYHw23LU0bRRtYoIp PdIOOrLF9ZanAO6rOyeOsgTweUVQO0qipL5nx0VpFlWondiJ1qKf8HdKoiZPtzffk3KE ldDbF4+xSnop+oVnpZqHP5OrDN3OvDx4E5RjzQpRqTxDiPyvGgJkF4zHa+eZlv+SVAU+ gz4IHXLTP/UJPJIE1J5RuJWXl6QvolGf7m1oEXpjrddeTQayf9V7IKFY3lR6sldursla GwgA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of 3vbkoxakbaeg289ukvvo1kzzsn.qyyqvo42o1myx3ox3.myw@m3kw2wvrgufz5godrsrytgd7.apphosting.bounces.google.com designates 209.85.220.69 as permitted sender) smtp.mailfrom=3vbKOXAkbAEg289ukvvo1kzzsn.qyyqvo42o1myx3ox3.myw@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: from mail-sor-f69.google.com (mail-sor-f69.google.com. [209.85.220.69]) by mx.google.com with SMTPS id p4sor10117313jab.5.2019.03.17.13.49.01 for (Google Transport Security); Sun, 17 Mar 2019 13:49:01 -0700 (PDT) Received-SPF: pass (google.com: domain of 3vbkoxakbaeg289ukvvo1kzzsn.qyyqvo42o1myx3ox3.myw@m3kw2wvrgufz5godrsrytgd7.apphosting.bounces.google.com designates 209.85.220.69 as permitted sender) client-ip=209.85.220.69; Authentication-Results: mx.google.com; spf=pass (google.com: domain of 3vbkoxakbaeg289ukvvo1kzzsn.qyyqvo42o1myx3ox3.myw@m3kw2wvrgufz5godrsrytgd7.apphosting.bounces.google.com designates 209.85.220.69 as permitted sender) smtp.mailfrom=3vbKOXAkbAEg289ukvvo1kzzsn.qyyqvo42o1myx3ox3.myw@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com X-Google-Smtp-Source: APXvYqxojhExD56b/yMGdo1rthu1JsRKBbq+nglPXYMv7KIAn0A7lR9LfGenfJEuOvhjcVopDkkpLBAFNpERS8o441NA3SoXY50Q MIME-Version: 1.0 X-Received: by 2002:a02:3f1d:: with SMTP id d29mr8708325jaa.4.1552855741444; Sun, 17 Mar 2019 13:49:01 -0700 (PDT) Date: Sun, 17 Mar 2019 13:49:01 -0700 In-Reply-To: <000000000000b05d0c057e492e33@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000db3d130584506672@google.com> Subject: Re: kernel panic: corrupted stack end in wb_workfn From: syzbot To: akpm@linux-foundation.org, aryabinin@virtuozzo.com, cai@lca.pw, davem@davemloft.net, dvyukov@google.com, guro@fb.com, hannes@cmpxchg.org, jbacik@fb.com, ktkhai@virtuozzo.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-sctp@vger.kernel.org, mgorman@techsingularity.net, mhocko@suse.com, netdev@vger.kernel.org, nhorman@tuxdriver.com, shakeelb@google.com, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk, vyasevich@gmail.com, willy@infradead.org Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes X-Bogosity: Ham, tests=bogofilter, spamicity=0.000021, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: syzbot has bisected this bug to: commit c981f254cc82f50f8cb864ce6432097b23195b9c Author: Al Viro Date: Sun Jan 7 18:19:09 2018 +0000 sctp: use vmemdup_user() rather than badly open-coding memdup_user() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=137bcecf200000 start commit: c981f254 sctp: use vmemdup_user() rather than badly open-c.. git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=10fbcecf200000 console output: https://syzkaller.appspot.com/x/log.txt?x=177bcecf200000 kernel config: https://syzkaller.appspot.com/x/.config?x=5e7dc790609552d7 dashboard link: https://syzkaller.appspot.com/bug?extid=ec1b7575afef85a0e5ca syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16a9a84b400000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17199bb3400000 Reported-by: syzbot+ec1b7575afef85a0e5ca@syzkaller.appspotmail.com Fixes: c981f254 ("sctp: use vmemdup_user() rather than badly open-coding memdup_user()")