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=-0.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS 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 A07B7C282CA for ; Wed, 13 Feb 2019 17:56:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 73AF52086C for ; Wed, 13 Feb 2019 17:56:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2393558AbfBMR4W (ORCPT ); Wed, 13 Feb 2019 12:56:22 -0500 Received: from mail-it1-f198.google.com ([209.85.166.198]:39242 "EHLO mail-it1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2393385AbfBMR4G (ORCPT ); Wed, 13 Feb 2019 12:56:06 -0500 Received: by mail-it1-f198.google.com with SMTP id p205so5144524itc.4 for ; Wed, 13 Feb 2019 09:56:05 -0800 (PST) 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=/8dKhXsiQ2QkfYGqoxIii4R2uRHURx43YRUX02sWWZk=; b=JwR5adEuAr79lrkWiR2cYDmXwHnYBbgQbi60rlBcwBSA+AeTbdYD+zHYJys4lHCSSO 2GXhzytlok8QY6Fl+xBeAvjha1ngN0yJgr0zvezfHTG/N0Vvg3PDCv6XB/L0NPLKLa9q K91wJo1tubu89HjVBhfZLd5KElKS4oZiSHR6GseflSXnU/N2CQUZMZM1QzUFB03Z+60v EpOV1W5CENfM4icpN7NOolcHHOoY+9PH+PJWulnNGrm0CnsqzU3rD4dRj6TkHZbKIlAe zG76uICDIIMvZ7hOVNdnBokEbhgUenjAj1s4jBb9ZTxZsemStIZBrcog7Dh+75UzfIF4 yxag== X-Gm-Message-State: AHQUAuaLRdAhkg7p3uDP4xinIS6aDRiD1XPW4zbqiQOdNf+9MqTl/xgu IiOVMM6kIrHJ6/V3g2bjT+JAdtNvOK/2+crKO5eDwUV1ufHs X-Google-Smtp-Source: AHgI3IZ58U73cYGoyRWtDlQp14fvqHk0IOmOOSUycwlw16eqtYk8jP+v5iEZj1KsxwiWKf+32AVJfCouWkbeNDUNAzUY1c8ybOx6 MIME-Version: 1.0 X-Received: by 2002:a02:89cc:: with SMTP id e12mr1107363jak.15.1550080564169; Wed, 13 Feb 2019 09:56:04 -0800 (PST) Date: Wed, 13 Feb 2019 09:56:04 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000006694750581ca4139@google.com> Subject: general protection fault in tc_ctl_chain From: syzbot To: davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, xiyou.wangcong@gmail.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: bd3606c29fcc rocker: Remove port_attr_bridge_flags_get ass.. git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=121bbf87400000 kernel config: https://syzkaller.appspot.com/x/.config?x=8572a6e4661225f4 dashboard link: https://syzkaller.appspot.com/bug?extid=eff9cae063e4b633c6c1 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11cbd404c00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17fc80d4c00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+eff9cae063e4b633c6c1@syzkaller.appspotmail.com audit: type=1800 audit(1550028783.638:30): pid=7517 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 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: 7669 Comm: syz-executor789 Not tainted 5.0.0-rc5+ #60 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__lock_acquire+0x8df/0x4700 kernel/locking/lockdep.c:3215 Code: 28 00 00 00 0f 85 35 27 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 dc 27 00 00 49 81 3c 24 20 45 9a 89 0f 84 03 f8 RSP: 0018:ffff88808b44f180 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 000000000000000c RSI: 0000000000000000 RDI: 0000000000000060 RBP: ffff88808b44f350 R08: 0000000000000001 R09: 0000000000000001 R10: ffff88808b44f570 R11: 0000000000000001 R12: 0000000000000060 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880915d4680 FS: 0000000001ef6880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000080 CR3: 0000000093549000 CR4: 00000000001406f0 Call Trace: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3841 __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0xf7/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 tc_ctl_chain+0x42f/0x11a0 net/sched/cls_api.c:2812 rtnetlink_rcv_msg+0x465/0xb00 net/core/rtnetlink.c:5192 netlink_rcv_skb+0x17a/0x460 net/netlink/af_netlink.c:2485 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5210 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x536/0x720 net/netlink/af_netlink.c:1336 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1925 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:631 ___sys_sendmsg+0x806/0x930 net/socket.c:2136 __sys_sendmsg+0x105/0x1d0 net/socket.c:2174 __do_sys_sendmsg net/socket.c:2183 [inline] __se_sys_sendmsg net/socket.c:2181 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2181 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4400d9 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffd09281608 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004400d9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401960 R13: 00000000004019f0 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 25ab48d993ef9249 ]--- RIP: 0010:__lock_acquire+0x8df/0x4700 kernel/locking/lockdep.c:3215 Code: 28 00 00 00 0f 85 35 27 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 dc 27 00 00 49 81 3c 24 20 45 9a 89 0f 84 03 f8 RSP: 0018:ffff88808b44f180 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 000000000000000c RSI: 0000000000000000 RDI: 0000000000000060 RBP: ffff88808b44f350 R08: 0000000000000001 R09: 0000000000000001 R10: ffff88808b44f570 R11: 0000000000000001 R12: 0000000000000060 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880915d4680 FS: 0000000001ef6880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000080 CR3: 0000000093549000 CR4: 00000000001406f0 --- 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#bug-status-tracking for how to communicate with syzbot. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches