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=-8.7 required=3.0 tests=BAYES_00,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 9C550C43461 for ; Mon, 14 Sep 2020 09:34:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6A81A207EA for ; Mon, 14 Sep 2020 09:34:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726373AbgINJeM (ORCPT ); Mon, 14 Sep 2020 05:34:12 -0400 Received: from mail-io1-f78.google.com ([209.85.166.78]:38910 "EHLO mail-io1-f78.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726410AbgINJdT (ORCPT ); Mon, 14 Sep 2020 05:33:19 -0400 Received: by mail-io1-f78.google.com with SMTP id e21so10669624iod.5 for ; Mon, 14 Sep 2020 02:33:19 -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=DJUq5XrhAYhtHbOepiU7xqamyttrBJSi0jWTB9ZyYVk=; b=J2SdzqKGOgi+2cb2TqmqvT+f8ru7xh+S1piPrgeNUCEAtHnubHbIsaRyUK0iZDewRy fHZ8Bzuvx4RcKa5XuLPK1pEVUsX3oVqH6IZP5pBngvfI595ZQFoLaRqntJbLWMgT1nLn ghWwb81CPvTsgxPkCwUBiMcyZkcSnkggjFM9zfblLMF68yzYpn4bX/7fiWdqlX5bP+zU VNVMXrBurf+Jxk0LQ6mDsmKjVaMCpLpRo/4Wi7Lw9VOAI1kdLbQcEVg6flUaArlm3x3+ 5cES5njRD3vUcalQ6nPSljA/py4LrcCP+oAcTudZZsx8PiGCYvq07G1yDeKLO4F5uvhI HALg== X-Gm-Message-State: AOAM531gpQMKmNvlhPXOYe52MauUIs2h8N2HtQ/0jCfwvgNnfBwNvSn6 e55wbpk8PjuzxsinOZdfh1jH7izg3EU4zMqRASFVBiZWZS5C X-Google-Smtp-Source: ABdhPJwwUWrNj4Z0DiTe6zo1NImw1NKYEq3vDz2Ie/ucA57ZOyvizj2/pwThU5abRcLsSj8CdwBbq6z4aej7SSAB9VrmASMnYDx2 MIME-Version: 1.0 X-Received: by 2002:a6b:7c07:: with SMTP id m7mr10719738iok.32.1600075998706; Mon, 14 Sep 2020 02:33:18 -0700 (PDT) Date: Mon, 14 Sep 2020 02:33:18 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000843f5305af42b9fa@google.com> Subject: general protection fault in tipc_mon_reinit_self From: syzbot To: davem@davemloft.net, jmaloy@redhat.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, tipc-discussion@lists.sourceforge.net, ying.xue@windriver.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 issue on: HEAD commit: 7fe10096 Merge branch 'linus' of git://git.kernel.org/pub/.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=14886e9e900000 kernel config: https://syzkaller.appspot.com/x/.config?x=a9075b36a6ae26c9 dashboard link: https://syzkaller.appspot.com/bug?extid=11c08b913d16224fde6f compiler: gcc (GCC) 10.1.0-syz 20200507 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+11c08b913d16224fde6f@syzkaller.appspotmail.com tipc: 32-bit node address hash set to a3a24078 general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 8164 Comm: kworker/0:4 Not tainted 5.9.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events tipc_net_finalize_work RIP: 0010:tipc_mon_reinit_self+0x389/0x610 net/tipc/monitor.c:686 Code: a8 f9 49 8d 7c 24 10 48 89 f8 48 c1 e8 03 0f b6 04 18 84 c0 74 08 3c 03 0f 8e 40 02 00 00 4c 89 e8 45 8b 64 24 10 48 c1 e8 03 <0f> b6 04 18 84 c0 74 08 3c 03 0f 8e 62 02 00 00 45 89 65 00 4c 89 RSP: 0018:ffffc9001623fc68 EFLAGS: 00010246 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: ffffffff89bd6a40 RDI: ffff888054228010 RBP: 0000000000000000 R08: 0000000000000001 R09: ffff8880a280cd60 R10: fffffbfff1564d71 R11: 0000000000000000 R12: 00000000a3a24078 R13: 0000000000000000 R14: ffff888049b91010 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000558623d05ee8 CR3: 0000000090a76000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tipc_net_finalize net/tipc/net.c:140 [inline] tipc_net_finalize+0x1df/0x310 net/tipc/net.c:131 tipc_net_finalize_work+0x55/0x80 net/tipc/net.c:150 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415 kthread+0x3b5/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Modules linked in: ---[ end trace 070d9aa71f52a0c0 ]--- RIP: 0010:tipc_mon_reinit_self+0x389/0x610 net/tipc/monitor.c:686 Code: a8 f9 49 8d 7c 24 10 48 89 f8 48 c1 e8 03 0f b6 04 18 84 c0 74 08 3c 03 0f 8e 40 02 00 00 4c 89 e8 45 8b 64 24 10 48 c1 e8 03 <0f> b6 04 18 84 c0 74 08 3c 03 0f 8e 62 02 00 00 45 89 65 00 4c 89 RSP: 0018:ffffc9001623fc68 EFLAGS: 00010246 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: ffffffff89bd6a40 RDI: ffff888054228010 RBP: 0000000000000000 R08: 0000000000000001 R09: ffff8880a280cd60 R10: fffffbfff1564d71 R11: 0000000000000000 R12: 00000000a3a24078 R13: 0000000000000000 R14: ffff888049b91010 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000558623d05ee8 CR3: 0000000090a76000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This report 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 issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.