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=-0.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=unavailable 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 BB405C48BD6 for ; Tue, 25 Jun 2019 21:47:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 976512084B for ; Tue, 25 Jun 2019 21:47:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726498AbfFYVrI (ORCPT ); Tue, 25 Jun 2019 17:47:08 -0400 Received: from mail-io1-f70.google.com ([209.85.166.70]:47728 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726462AbfFYVrI (ORCPT ); Tue, 25 Jun 2019 17:47:08 -0400 Received: by mail-io1-f70.google.com with SMTP id r27so3761iob.14 for ; Tue, 25 Jun 2019 14:47:07 -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:message-id:subject:from:to; bh=1nxJClCwHHDsphbxzN6zwr13SoEx8BA6KWW2qUzM9VA=; b=G50+8MMd2Yd7RAQzknC73hLntMWhaWu/ApV7R5vB2wxSqOrzl09msa80LPqoFqLEqY RP51b/s1hroiGAZbahp8hEEr6v8scQ5W3YMjj9GxdRQKxapQ4sJEtwba0ExhYO+RPdPb FPqNY+7Hk0ikL7Ii39wJnzPdSTlpd6qnIRptg5do7RddCMfB7XiEB+G3rtYjREirKnOQ edzMUJjiX8rfLc1G3FMJPcSqLBkvQ5oI2VkJoD53hiopUf+Pwpm7qBxF13PVeqwb7LTo nv5SBdSx86UNCoPTLGuqAAc0Vo5QRZV1lRRgWEt+0wE7pM/YRormC6oJtvnndYm4y39H wHPw== X-Gm-Message-State: APjAAAXD/zFQGLRiVFFrZxREkeAs6/D8qC8HIREfbdvHGQ4lgeU4x64L dMepfDRZxH3hO7NioEgQv+7ock7EXrhz1KQ20uEI1sB8x0SB X-Google-Smtp-Source: APXvYqx8OQEPqAzgRPPtCZ3+S1oFP/wVH1/fhG5WFRNy7Svhsk93G2qWsw8KCNnLRZYd4MffDAOZT5JL9p2WOPz+lVZ6OAsE6pbi MIME-Version: 1.0 X-Received: by 2002:a6b:b709:: with SMTP id h9mr1126425iof.2.1561499227369; Tue, 25 Jun 2019 14:47:07 -0700 (PDT) Date: Tue, 25 Jun 2019 14:47:07 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c3bb59058c2cdef2@google.com> Subject: BUG: unable to handle kernel NULL pointer dereference in corrupted (4) 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 Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: 4b972a01 Linux 5.2-rc6 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17852b6ea00000 kernel config: https://syzkaller.appspot.com/x/.config?x=e7c31a94f66cc0aa dashboard link: https://syzkaller.appspot.com/bug?extid=4b5d77fdf765668f9eba compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15252769a00000 The bug was bisected 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=146ae35ea00000 final crash: https://syzkaller.appspot.com/x/report.txt?x=166ae35ea00000 console output: https://syzkaller.appspot.com/x/log.txt?x=126ae35ea00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+4b5d77fdf765668f9eba@syzkaller.appspotmail.com Fixes: e9db4ef6bf4c ("bpf: sockhash fix omitted bucket lock in sock_close") BUG: kernel NULL pointer dereference, address: 00000000000000fc --- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches