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 autolearn=no 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 257C2CA9EB5 for ; Mon, 21 Oct 2019 05:21:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E79D72084B for ; Mon, 21 Oct 2019 05:21:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725897AbfJUFVI (ORCPT ); Mon, 21 Oct 2019 01:21:08 -0400 Received: from mail-il1-f197.google.com ([209.85.166.197]:37943 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725765AbfJUFVH (ORCPT ); Mon, 21 Oct 2019 01:21:07 -0400 Received: by mail-il1-f197.google.com with SMTP id a7so5969482iln.5 for ; Sun, 20 Oct 2019 22:21:07 -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=RNA7wvEo4dZS4Zjh6nazheoAtSIOteZ88hIBmR8F1xQ=; b=tuXNvOcTnk0hnc+bjiFeqMGJGl54kxrCih44MB6IO1doYKEy9nYnSdcF/tIwJGgcTD VY+0UdxEFf0QnyUGzfrB0fLdeRQvB+zgvEa/X4vjADT/eMxurbSTUdS3w7QH90jbOmgv jgY3bz11mD82yMS4rzDdeKfnkPtz+vqUibE3292U5R7R80CPNvSL43vq/BUsH5t2L3xC P/bxvgAe5gi7f/WC7Vwi6ibGyJafQq0PhtnzYrs0hS53t1Nicgc5NBJcOV9EJhSA5STM SNfteOYYWY5oDlRWNY4ahi8kxeUyIoiV0r3njH6WXhnjEnPGIF+mIO5ll5mr7axOfj7u 8Iug== X-Gm-Message-State: APjAAAVr7shx9hAfHFmK3g5pKrIyYiASBoytiiUUhGoVIuqJM8bJFBH8 XsLuzT8/+zVkmA8ad1DFQAM7uZdBIQvx3GvFRg/PyhHzWJBl X-Google-Smtp-Source: APXvYqyCxl0gyCt8f14Ks5hJ2E9kauUFKQD0IBH+dz03PqnOwax24Qywyva4FwEaknsdd/yE0CqkhHO+VOHjd9NQkTK8A/cz5fxI MIME-Version: 1.0 X-Received: by 2002:a6b:b2d5:: with SMTP id b204mr693498iof.137.1571635266901; Sun, 20 Oct 2019 22:21:06 -0700 (PDT) Date: Sun, 20 Oct 2019 22:21:06 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000ccde8d059564d93d@google.com> Subject: general protection fault in batadv_iv_ogm_queue_add From: syzbot To: a@unstable.cc, b.a.t.m.a.n@lists.open-mesh.org, davem@davemloft.net, 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"; 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: 998d7551 Merge branch 'akpm' (patches from Andrew) git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1702db87600000 kernel config: https://syzkaller.appspot.com/x/.config?x=e0ac4d9b35046343 dashboard link: https://syzkaller.appspot.com/bug?extid=7dd2da51d8ae6f990403 compiler: gcc (GCC) 9.0.0 20181231 (experimental) 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+7dd2da51d8ae6f990403@syzkaller.appspotmail.com kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 4256 Comm: kworker/u4:0 Not tainted 5.4.0-rc3+ #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_queue_add+0x49/0x1120 net/batman-adv/bat_iv_ogm.c:605 Code: 48 89 75 b8 48 89 4d c0 4c 89 45 b0 44 89 4d d0 e8 fc 02 46 fa 48 8d 7b 03 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 18 0d 00 00 RSP: 0018:ffff88805d2cfb80 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff888092284000 RDX: 0000000000000000 RSI: ffffffff872d1214 RDI: 0000000000000003 RBP: ffff88805d2cfc18 R08: ffff888092284000 R09: 0000000000000001 R10: ffffed100ba59f77 R11: 0000000000000003 R12: dffffc0000000000 R13: ffffed101245080e R14: ffff888092284000 R15: 0000000100051cf6 FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200002c0 CR3: 00000000a421b000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: batadv_iv_ogm_schedule+0xb0b/0xe50 net/batman-adv/bat_iv_ogm.c:813 batadv_iv_send_outstanding_bat_ogm_packet+0x580/0x760 net/batman-adv/bat_iv_ogm.c:1675 process_one_work+0x9af/0x1740 kernel/workqueue.c:2269 worker_thread+0x98/0xe40 kernel/workqueue.c:2415 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Modules linked in: ---[ end trace 04d065842187c2b8 ]--- RIP: 0010:batadv_iv_ogm_queue_add+0x49/0x1120 net/batman-adv/bat_iv_ogm.c:605 Code: 48 89 75 b8 48 89 4d c0 4c 89 45 b0 44 89 4d d0 e8 fc 02 46 fa 48 8d 7b 03 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 18 0d 00 00 RSP: 0018:ffff88805d2cfb80 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff888092284000 RDX: 0000000000000000 RSI: ffffffff872d1214 RDI: 0000000000000003 RBP: ffff88805d2cfc18 R08: ffff888092284000 R09: 0000000000000001 R10: ffffed100ba59f77 R11: 0000000000000003 R12: dffffc0000000000 R13: ffffed101245080e R14: ffff888092284000 R15: 0000000100051cf6 FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200002c0 CR3: 00000000a421b000 CR4: 00000000001426f0 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.