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=-3.8 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 5CB75C4727F for ; Mon, 28 Sep 2020 07:36:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0AE02208FE for ; Mon, 28 Sep 2020 07:36:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726672AbgI1HgR (ORCPT ); Mon, 28 Sep 2020 03:36:17 -0400 Received: from mail-il1-f206.google.com ([209.85.166.206]:52697 "EHLO mail-il1-f206.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726600AbgI1HgQ (ORCPT ); Mon, 28 Sep 2020 03:36:16 -0400 Received: by mail-il1-f206.google.com with SMTP id m1so91983iln.19 for ; Mon, 28 Sep 2020 00:36:16 -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=dQVM5rOfZiP72VmE11knrY/4zMQmueL+CPBBPaQD6Ls=; b=tHXYzV6MET9TcP5Aazco+f7CvPU8VzSf1cYXenHGR+dR0zB5STzrcDjDDprsZSd9yq 4Doe5Zx49Bmeu8cAXQnRFW6EVvLg+ojvnRHgEr0gqJbJUQexk6seNFp5nFTjEIhbpf3u 1Xmo+0W9J3d7qw4xYca35Z49bp0WsGSIC4BYSiZYEw7Z6tttbr5W4y8+4Lvez29NkMAf Fz4MHga/kRCzrqLRMOAza+fq7LZZ9wyVKKArJmTU3UXa5g+b2qAXFPu4jr81peVHkya6 Y4sex3XAWtX+InmxyQfAz6bQiu/Cci8n95/tYOTZLaXqi2CCaKPV34W1D7nxFbvdeIgr FaOw== X-Gm-Message-State: AOAM5313gHLLhjeWfn31c3BwwmF2zXWjUJEXeQC6Spd+NuzlJkfgBdE6 DgTfkQnRgNdydmqKwoF7Vq65kAt0oqsBBTGWpBTpFpHbGcKE X-Google-Smtp-Source: ABdhPJzrFpPk1jt+c/26RXCvjoiLQ4V9RVYmzNivbXg59VgdKnkQSOgo0y7aB0EiQYwVohU8RlaLrbDpZ4wtdIyfQ/tJRkshTCct MIME-Version: 1.0 X-Received: by 2002:a05:6e02:925:: with SMTP id o5mr125335ilt.20.1601278575890; Mon, 28 Sep 2020 00:36:15 -0700 (PDT) Date: Mon, 28 Sep 2020 00:36:15 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000b3d57105b05ab856@google.com> Subject: BUG: unable to handle kernel paging request in tcf_action_dump_terse 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" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 307eea32 dt-bindings: net: renesas,ravb: Add support for r.. git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=13b7e29d900000 kernel config: https://syzkaller.appspot.com/x/.config?x=240e2ebab67245c7 dashboard link: https://syzkaller.appspot.com/bug?extid=5f66662adc70969940fd compiler: gcc (GCC) 10.1.0-syz 20200507 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+5f66662adc70969940fd@syzkaller.appspotmail.com netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'. BUG: unable to handle page fault for address: fffffffffffffff0 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 9e90067 P4D 9e90067 PUD 9e92067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 9876 Comm: syz-executor.5 Not tainted 5.9.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:tcf_action_dump_terse+0x8c/0x4e0 net/sched/act_api.c:766 Code: 3c 03 0f 8e 0a 03 00 00 48 89 da 44 8b ad b8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 10 04 00 00 <48> 8b 03 4c 8d 60 10 4c 89 e7 e8 d5 2b 4e fd 4c 89 e1 be 01 00 00 RSP: 0018:ffffc9001604f170 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: fffffffffffffff0 RCX: ffffc900137c6000 RDX: 1ffffffffffffffe RSI: ffffffff868ac439 RDI: ffff88808f9dfdf8 RBP: ffff88808f9dfd40 R08: 0000000000000000 R09: ffff88805dd4a024 R10: 0000000000000000 R11: 0000000000000000 R12: fffffffffffffff0 R13: 0000000000000024 R14: ffff88805dd4a000 R15: ffff88808f9dfe00 FS: 00007ffbf7f0d700(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffffffffffff0 CR3: 00000000a6cea000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tcf_action_dump_1+0xd2/0x5a0 net/sched/act_api.c:795 tcf_dump_walker net/sched/act_api.c:249 [inline] tcf_generic_walker+0x207/0xba0 net/sched/act_api.c:343 tc_dump_action+0x6d5/0xe60 net/sched/act_api.c:1623 netlink_dump+0x4cd/0xf60 net/netlink/af_netlink.c:2246 __netlink_dump_start+0x643/0x900 net/netlink/af_netlink.c:2354 netlink_dump_start include/linux/netlink.h:246 [inline] rtnetlink_rcv_msg+0x70f/0xad0 net/core/rtnetlink.c:5526 netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2470 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:671 ____sys_sendmsg+0x331/0x810 net/socket.c:2353 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407 __sys_sendmmsg+0x195/0x480 net/socket.c:2497 __do_sys_sendmmsg net/socket.c:2526 [inline] __se_sys_sendmmsg net/socket.c:2523 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2523 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e179 Code: 3d b2 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 0b b2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffbf7f0cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 0000000000027f40 RCX: 000000000045e179 RDX: 0492492492492805 RSI: 0000000020000140 RDI: 0000000000000003 RBP: 000000000118cf88 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c R13: 00007ffc4024440f R14: 00007ffbf7f0d9c0 R15: 000000000118cf4c Modules linked in: CR2: fffffffffffffff0 ---[ end trace 8426deb8202e61ba ]--- RIP: 0010:tcf_action_dump_terse+0x8c/0x4e0 net/sched/act_api.c:766 Code: 3c 03 0f 8e 0a 03 00 00 48 89 da 44 8b ad b8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 10 04 00 00 <48> 8b 03 4c 8d 60 10 4c 89 e7 e8 d5 2b 4e fd 4c 89 e1 be 01 00 00 RSP: 0018:ffffc9001604f170 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: fffffffffffffff0 RCX: ffffc900137c6000 RDX: 1ffffffffffffffe RSI: ffffffff868ac439 RDI: ffff88808f9dfdf8 RBP: ffff88808f9dfd40 R08: 0000000000000000 R09: ffff88805dd4a024 R10: 0000000000000000 R11: 0000000000000000 R12: fffffffffffffff0 R13: 0000000000000024 R14: ffff88805dd4a000 R15: ffff88808f9dfe00 FS: 00007ffbf7f0d700(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffffffffffff0 CR3: 00000000a6cea000 CR4: 00000000001506e0 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.