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 E807CC10F25 for ; Wed, 11 Mar 2020 06:44:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C32C321655 for ; Wed, 11 Mar 2020 06:44:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728282AbgCKGoP (ORCPT ); Wed, 11 Mar 2020 02:44:15 -0400 Received: from mail-il1-f198.google.com ([209.85.166.198]:51883 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726254AbgCKGoO (ORCPT ); Wed, 11 Mar 2020 02:44:14 -0400 Received: by mail-il1-f198.google.com with SMTP id c12so687234ilr.18 for ; Tue, 10 Mar 2020 23:44:12 -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=YtV7jGLGMcAp29GFO159t6p3b3YjpBCWK33ht3yH0pw=; b=siHRL8nKlOvafiG7KQxriQinRyUR6Pa4K6F05Cd7itSx/bpjVUv4MRMFjVpgiWJOJ+ 7IpjPGtvwDzObtj+4BK4Ic4dJ1esI3rSacyVTRr3IBK4Qjvr4TvwZg1utCGc9nH67ol8 fjjgFj7B0W/DGYCUd0AKezEO93RTmYO9eOnoifFYVOwvdDta79YnAtdo8Ngam4ci2t34 Os2fW6/JXAE7henLMSV/MrXV+oeQOWVRT/I5iuuJe1PLzPKrpI0+SqwnoeBGJgET5joS NHbqcIHec3UEV229yWybwqNobeNz85Uwk8KS1Q25qYNeeSc0VbDmPC3vEsxiFjeWSjKw L56w== X-Gm-Message-State: ANhLgQ2Xjv6iuwurkNnWcQEoHcM1ByMMn2UqVUJiFstUiWowDOVjUsN2 kMgw+MFgdWt79Kkx9HCE19zRoh6rgP0XZ1ES5/tCve0MI+bg X-Google-Smtp-Source: ADFU+vtB67Ml4ghGD81EjWvWukFQaiYCbuwypjU3u1gtlYZawe0DdIHGKgVuGltrfQmSZJAvX1xeZejsBj5NAOQC5/wt7DWOphzN MIME-Version: 1.0 X-Received: by 2002:a92:d4d0:: with SMTP id o16mr1744420ilm.40.1583909052265; Tue, 10 Mar 2020 23:44:12 -0700 (PDT) Date: Tue, 10 Mar 2020 23:44:12 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000006abbca05a08e902c@google.com> Subject: BUG: unable to handle kernel paging request in tcf_action_destroy From: syzbot To: davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, xiyou.wangcong@gmail.com Content-Type: text/plain; charset="UTF-8" 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: 425c075d Merge branch 'tun-debug' git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=12a97f0de00000 kernel config: https://syzkaller.appspot.com/x/.config?x=598678fc6e800071 dashboard link: https://syzkaller.appspot.com/bug?extid=e30bd6a0f27d4d638567 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+e30bd6a0f27d4d638567@syzkaller.appspotmail.com BUG: unable to handle page fault for address: ffffffffffffffff #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 9670067 P4D 9670067 PUD 9672067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 26046 Comm: syz-executor.3 Not tainted 5.6.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:tcf_action_destroy+0x75/0x150 net/sched/act_api.c:720 Code: 83 c3 08 89 ee e8 3b 27 48 fb 83 fd 20 0f 84 ae 00 00 00 e8 bd 25 48 fb 48 89 d8 48 c1 e8 03 42 80 3c 28 00 0f 85 ae 00 00 00 <4c> 8b 3b 4d 85 ff 0f 84 8b 00 00 00 e8 9a 25 48 fb 4c 89 f8 48 c7 RSP: 0018:ffffc90001c57028 EFLAGS: 00010246 RAX: 1fffffffffffffff RBX: ffffffffffffffff RCX: ffffc9000fec9000 RDX: 00000000000008d1 RSI: ffffffff8629ecd3 RDI: ffffffffffffffff RBP: 0000000000000000 R08: ffff88805b4861c0 R09: ffffed1015ce7074 R10: ffffed1015ce7073 R11: ffff8880ae73839b R12: 0000000000000000 R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000 FS: 00007f4bd1960700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffff CR3: 000000004a795000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tcf_exts_destroy+0x42/0xc0 net/sched/cls_api.c:3001 tcf_exts_change+0xf4/0x150 net/sched/cls_api.c:3059 tcindex_set_parms+0xed8/0x1a00 net/sched/cls_tcindex.c:456 tcindex_change+0x203/0x2e0 net/sched/cls_tcindex.c:518 tc_new_tfilter+0xa59/0x20b0 net/sched/cls_api.c:2103 rtnetlink_rcv_msg+0x810/0xad0 net/core/rtnetlink.c:5431 netlink_rcv_skb+0x15a/0x410 net/netlink/af_netlink.c:2478 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline] netlink_unicast+0x537/0x740 net/netlink/af_netlink.c:1329 netlink_sendmsg+0x882/0xe10 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:672 ____sys_sendmsg+0x6b9/0x7d0 net/socket.c:2343 ___sys_sendmsg+0x100/0x170 net/socket.c:2397 __sys_sendmsg+0xec/0x1b0 net/socket.c:2430 do_syscall_64+0xf6/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c4a9 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f4bd195fc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f4bd19606d4 RCX: 000000000045c4a9 RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000009fa R14: 00000000004cc777 R15: 000000000076bf2c Modules linked in: CR2: ffffffffffffffff ---[ end trace c654cd1e2ba461f1 ]--- RIP: 0010:tcf_action_destroy+0x75/0x150 net/sched/act_api.c:720 Code: 83 c3 08 89 ee e8 3b 27 48 fb 83 fd 20 0f 84 ae 00 00 00 e8 bd 25 48 fb 48 89 d8 48 c1 e8 03 42 80 3c 28 00 0f 85 ae 00 00 00 <4c> 8b 3b 4d 85 ff 0f 84 8b 00 00 00 e8 9a 25 48 fb 4c 89 f8 48 c7 RSP: 0018:ffffc90001c57028 EFLAGS: 00010246 RAX: 1fffffffffffffff RBX: ffffffffffffffff RCX: ffffc9000fec9000 RDX: 00000000000008d1 RSI: ffffffff8629ecd3 RDI: ffffffffffffffff RBP: 0000000000000000 R08: ffff88805b4861c0 R09: ffffed1015ce7074 R10: ffffed1015ce7073 R11: ffff8880ae73839b R12: 0000000000000000 R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000 FS: 00007f4bd1960700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffff CR3: 000000004a795000 CR4: 00000000001406e0 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.