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=-3.7 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 AA5C3C433E1 for ; Wed, 19 Aug 2020 15:04:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8A38320882 for ; Wed, 19 Aug 2020 15:04:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728549AbgHSPEu (ORCPT ); Wed, 19 Aug 2020 11:04:50 -0400 Received: from mail-il1-f199.google.com ([209.85.166.199]:47160 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728445AbgHSPE0 (ORCPT ); Wed, 19 Aug 2020 11:04:26 -0400 Received: by mail-il1-f199.google.com with SMTP id e12so16933432ile.14 for ; Wed, 19 Aug 2020 08:04:25 -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=VDNiVmoVHM/EAgrPMdZuxSNbn4Cv7QjczVTKlAQSEmk=; b=IdOd40v5Ve+GKnakE4vk6pMpMXaXzLB2oWSNMBOCbtK2xpN68C0ADXERlQeZ+l1Mpc /zZwZDlnCbWHQwVzhE4lR58Mx5p/+kCSQLnBG8IEddqPnkTUGAZpeEB2fSp0AqS/68vc ZxRC/7M988TjEn1eFpnDEXCtLftl6tnZSDhAI6cDVrZXDcwK7HzgAEczpIwKO5u0xGij dHmMCQs0sWZOXK+13mewaoxt8itqshfy4CeO9r00uWdLr4WbeklkDt2IHxceNIUsbrQb 19b8ONmzqgnFXIKRPz68/DjIl+ug8M0D7JggJI8mOrWCZO7gm24fu+me8j0NyP1M9Ibp dWBA== X-Gm-Message-State: AOAM533UXJucs29ncwunTYKu+Cf6Gpmyv0ittjyNkBmLDd0Szoqn8hKH qTo6hqXYfEqR5uVc3J37CYTVwduHlaxaZ+1XT11K6UQvlfG1 X-Google-Smtp-Source: ABdhPJzeo74koGhSSSorznRH6H8AtESLASRNC7zQ8Md7nTE1JsONxbQConiM86dPAk4WOiflAjYv1YIace83+WiDrjid6uQT0mQE MIME-Version: 1.0 X-Received: by 2002:a05:6638:1614:: with SMTP id x20mr23864466jas.92.1597849465083; Wed, 19 Aug 2020 08:04:25 -0700 (PDT) Date: Wed, 19 Aug 2020 08:04:25 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c560bd05ad3c5187@google.com> Subject: WARNING in rtnl_dellink From: syzbot To: andriin@fb.com, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, edumazet@google.com, hawk@kernel.org, jiri@mellanox.com, john.fastabend@gmail.com, kafai@fb.com, kpsingh@chromium.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, roopa@cumulusnetworks.com, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, yhs@fb.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: 4ca0d9ac bonding: show saner speed for broadcast mode git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=13c21516900000 kernel config: https://syzkaller.appspot.com/x/.config?x=9c89856ae5fc8b6 dashboard link: https://syzkaller.appspot.com/bug?extid=b3b5c64f4880403edd36 compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=119f99f6900000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10fe8fbe900000 Bisection is inconclusive: the issue happens on the oldest tested release. bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11516872900000 final oops: https://syzkaller.appspot.com/x/report.txt?x=13516872900000 console output: https://syzkaller.appspot.com/x/log.txt?x=15516872900000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+b3b5c64f4880403edd36@syzkaller.appspotmail.com bond1 (unregistering): Released all slaves ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7280 at net/core/dev.c:9304 rollback_registered_many+0xecd/0x1210 net/core/dev.c:9304 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 7280 Comm: syz-executor543 Not tainted 5.8.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x18f/0x20d lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:231 __warn.cold+0x20/0x4a kernel/panic.c:600 report_bug+0x1bd/0x210 lib/bug.c:198 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536 RIP: 0010:rollback_registered_many+0xecd/0x1210 net/core/dev.c:9304 Code: 0a 1b 00 00 48 c7 c6 40 d7 fe 88 48 c7 c7 80 d7 fe 88 c6 05 b6 e1 71 04 01 e8 71 18 0a fb 0f 0b e9 13 fc ff ff e8 d3 14 39 fb <0f> 0b e9 ea fb ff ff e8 c7 14 39 fb 0f 0b e9 29 fc ff ff e8 3b 25 RSP: 0018:ffffc90002df7290 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 00000000a650bd01 RCX: ffffffff863b3396 RDX: ffff8880874fc540 RSI: ffffffff863b37ad RDI: 0000000000000001 RBP: ffff8880a5edef80 R08: 0000000000000000 R09: ffffffff8a7e4067 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff8880925b0000 R14: dffffc0000000000 R15: ffff8880a5edef80 unregister_netdevice_many.part.0+0x1a/0x2f0 net/core/dev.c:10426 unregister_netdevice_many+0x36/0x50 net/core/dev.c:10425 rtnl_delete_link net/core/rtnetlink.c:3055 [inline] rtnl_dellink+0x34a/0xa60 net/core/rtnetlink.c:3107 rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5563 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+0x6e8/0x810 net/socket.c:2353 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2440 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x44b1a9 Code: e8 9c 14 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 4b 05 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f8155c28d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000006e7a58 RCX: 000000000044b1a9 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000009 RBP: 00000000006e7a50 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006e7a5c R13: 0000000000000000 R14: 0000000000000000 R15: 068500100000003c Kernel Offset: disabled Rebooting in 86400 seconds.. --- 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. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches