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=-5.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,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 A8AE0C0650F for ; Tue, 30 Jul 2019 07:13:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7BAA4205F4 for ; Tue, 30 Jul 2019 07:13:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729442AbfG3HNC (ORCPT ); Tue, 30 Jul 2019 03:13:02 -0400 Received: from mail-io1-f72.google.com ([209.85.166.72]:40487 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727029AbfG3HNB (ORCPT ); Tue, 30 Jul 2019 03:13:01 -0400 Received: by mail-io1-f72.google.com with SMTP id v11so70404334iop.7 for ; Tue, 30 Jul 2019 00:13:01 -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=5NJsWs5rO4lIuS0ZgiXWXMUnUDOFAKxFplPhTBI+bqM=; b=f+EqCNhC74ZT/pA1E3yAIW9rvfwhJnEcNqy+MEpHHPvRc/5vVS9icEIh9Tng/YBD6L vWElENljTqrUC1brKC+cqqMVtSeRV6bNVbBjyjbjDeA+RNH199LVPtLz+4ao5k+6W7Q9 QINEAXw04aIxDkdraFjqPhiFPujd81UonBWvqBd58cNuH4Uef5RJvRIqN3gUuCFldB6M LRQupkZBnRmmxDXT8rCasf8Ivgt2ElOPsADPmmqcTmd1Ho0Ut0t8phUdPvmOWK/4UG+O 1rXvjFY5QLfh36+Yo0E+KN3nbkdxYi8cpIVLiVUTtxxR16wQHh/306o0SZr74ObnM5bA pi9Q== X-Gm-Message-State: APjAAAWcF2odBXEeSZMvVvNcV5C8Bq897Rbe+elOzA33/uPAUT/oXESK 72xxD6Tfv8yBIxPxvZtxV/Wb21r7GsRRJyavowk3IcPkr+uc X-Google-Smtp-Source: APXvYqw5SXLkTuBMD92g5AbsXWj+a5igK5Vc68j3TXyjLS+D+UvsTA9bxtT6u0WCZTYI0I29O9xwwLMF8YW79WjQUXBUs5hDeJu+ MIME-Version: 1.0 X-Received: by 2002:a05:6638:201:: with SMTP id e1mr36980524jaq.45.1564470780934; Tue, 30 Jul 2019 00:13:00 -0700 (PDT) Date: Tue, 30 Jul 2019 00:13:00 -0700 In-Reply-To: <000000000000df9d48058e9228cd@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000028c26d058ee0bd1a@google.com> Subject: Re: KASAN: use-after-free Read in psi_task_change From: syzbot To: ast@kernel.org, daniel@iogearbox.net, john.fastabend@gmail.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, tglx@linutronix.de Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this bug to: commit e9db4ef6bf4ca9894bb324c76e01b8f1a16b2650 Author: John Fastabend Date: Sat Jun 30 13:17:47 2018 +0000 bpf: sockhash fix omitted bucket lock in sock_close bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10f4840c600000 start commit: bed38c3e Merge tag 'powerpc-5.3-2' of git://git.kernel.org.. git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=12f4840c600000 console output: https://syzkaller.appspot.com/x/log.txt?x=14f4840c600000 kernel config: https://syzkaller.appspot.com/x/.config?x=9aec8cb13b5f7389 dashboard link: https://syzkaller.appspot.com/bug?extid=f17ba6f9b8d9cc0498d0 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10dc7b34600000 Reported-by: syzbot+f17ba6f9b8d9cc0498d0@syzkaller.appspotmail.com Fixes: e9db4ef6bf4c ("bpf: sockhash fix omitted bucket lock in sock_close") For information about bisection process see: https://goo.gl/tpsmEJ#bisection