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=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 D915CC433DF for ; Tue, 7 Jul 2020 15:30:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C1A91204EC for ; Tue, 7 Jul 2020 15:30:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730201AbgGGPaY (ORCPT ); Tue, 7 Jul 2020 11:30:24 -0400 Received: from mail-il1-f197.google.com ([209.85.166.197]:34031 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729146AbgGGPaP (ORCPT ); Tue, 7 Jul 2020 11:30:15 -0400 Received: by mail-il1-f197.google.com with SMTP id y3so18723185ily.1 for ; Tue, 07 Jul 2020 08:30:14 -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=l5UfEPh6FpvcqMK9z9YCj6DGXnLOftd9sD9CfnuWGio=; b=ZjFvhjITieldz3Eyu5+AmYELpEfSDulUbg06yvsCyppgg95vBuFBvYQeYXjXe8r4bL 8qnf+6i3bLnZdT5ndseMAR5m6s1aoJ9kT6pKNbQlmXHhqyJ0/Gjuv8EHm33TS1zO9Fll 26SawQcB+6znWEJfcyxEQ7cLsUtl8qz/hEJgsdP+wwRnoVDCQrgs0aLvO7Usd1mIcAUS Qyl7tynJ1gEjxxqev5vKoIU9jRdspM+4TGS/5DHtmewlem3BrQzd9lXb/+uzkYMKa4Lz OJOWnIjBKc0pokcaBK/xsdzZ5jBd6JZJQFpXSzNCVXqj8fn6DSJgJSRdkf1PLOKZwMET D77w== X-Gm-Message-State: AOAM531iWd/UnvFcXcH52F1tbQnme2bvLOpw+PfeN64TUaY2ihQComAr RZr3BP5ohPAwZVCZ0j/dEuccbeUM0kZ1+IWrDZgs13eDs0Zu X-Google-Smtp-Source: ABdhPJz38T51Ko5sHjG40+v5KRv3EC++gkZunO00fGv8OmSqfw3SsUSP6S8MGjq1G+jBQ8orWn+UoH3rpNWToypbts+u/bx/KU74 MIME-Version: 1.0 X-Received: by 2002:a05:6602:2c8b:: with SMTP id i11mr31473413iow.139.1594135814367; Tue, 07 Jul 2020 08:30:14 -0700 (PDT) Date: Tue, 07 Jul 2020 08:30:14 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f06edf05a9dbaa44@google.com> Subject: general protection fault in batadv_iv_ogm_schedule_buff (2) From: syzbot To: a@unstable.cc, b.a.t.m.a.n@lists.open-mesh.org, davem@davemloft.net, kuba@kernel.org, linux-kernel@vger.kernel.org, mareklindner@neomailbox.ch, netdev@vger.kernel.org, sven@narfation.org, sw@simonwunderlich.de, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: 7cc2a8ea Merge tag 'block-5.8-2020-07-01' of git://git.ker.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=130b828f100000 kernel config: https://syzkaller.appspot.com/x/.config?x=7be693511b29b338 dashboard link: https://syzkaller.appspot.com/bug?extid=2eeeb5ad0766b57394d8 compiler: gcc (GCC) 10.1.0-syz 20200507 Unfortunately, I don't have any reproducer for this crash yet. IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+2eeeb5ad0766b57394d8@syzkaller.appspotmail.com general protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077] CPU: 1 PID: 9126 Comm: kworker/u4:9 Not tainted 5.8.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet RIP: 0010:batadv_iv_ogm_schedule_buff+0xd1e/0x1410 net/batman-adv/bat_iv_ogm.c:843 Code: 80 3c 28 00 0f 85 ee 05 00 00 4d 8b 3f 49 81 ff e0 e9 4e 8d 0f 84 dd 02 00 00 e8 bd 80 ae f9 49 8d 7f 70 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 af 06 00 00 48 8b 44 24 08 49 8b 6f 70 80 38 RSP: 0018:ffffc90004e97b98 EFLAGS: 00010202 RAX: 000000000000000e RBX: ffff8880a7471800 RCX: ffffffff87c5394d RDX: ffff88804cf02380 RSI: ffffffff87c536a3 RDI: 0000000000000070 RBP: 0000000000077000 R08: 0000000000000001 R09: ffff8880a875a02b R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000007 R13: dffffc0000000000 R14: ffff888051ad4c40 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000400200 CR3: 0000000061cac000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:869 [inline] batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:862 [inline] batadv_iv_send_outstanding_bat_ogm_packet+0x5c8/0x800 net/batman-adv/bat_iv_ogm.c:1722 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415 kthread+0x3b5/0x4a0 kernel/kthread.c:291 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293 Modules linked in: ---[ end trace f5c5eda032070cd1 ]--- RIP: 0010:batadv_iv_ogm_schedule_buff+0xd1e/0x1410 net/batman-adv/bat_iv_ogm.c:843 Code: 80 3c 28 00 0f 85 ee 05 00 00 4d 8b 3f 49 81 ff e0 e9 4e 8d 0f 84 dd 02 00 00 e8 bd 80 ae f9 49 8d 7f 70 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 af 06 00 00 48 8b 44 24 08 49 8b 6f 70 80 38 RSP: 0018:ffffc90004e97b98 EFLAGS: 00010202 RAX: 000000000000000e RBX: ffff8880a7471800 RCX: ffffffff87c5394d RDX: ffff88804cf02380 RSI: ffffffff87c536a3 RDI: 0000000000000070 RBP: 0000000000077000 R08: 0000000000000001 R09: ffff8880a875a02b R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000007 R13: dffffc0000000000 R14: ffff888051ad4c40 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000400200 CR3: 000000009480d000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- 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.