From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f205.google.com (mail-il1-f205.google.com [209.85.166.205]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 86B8A1C861B for ; Thu, 12 Jun 2025 02:21:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.205 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749694893; cv=none; b=BN9566ZzDSXyvxG+DQongb7COq1reqCpV3C6AF9P8JGWaufohkVgxzdI5YelhWrgjbM0bgbNprtWFsaynWsnMZYIjsa+ZjGrkYZKQd+L3/LLvpK5XZMoK3tCoczGOZl67ondcKsiX0H6OJdhvLQTpPLmhfHAzNbzaR+O/KfQlDc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749694893; c=relaxed/simple; bh=I0wIafBmjgY/k++GKwdSN60MB3WCviwy1xi0jvUyrgE=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=ugJZOcQNCLzJQ4nqQo2IJWdJCRcg2pVqkf6ecLk+oUX1qxa5wur6mGLVSAjZFmxSSiYI2dBO1lDNHIhg9/3wkKOOFpmfTbuNZfuwHXEnGmozd+CVy77msJEwUeRL9iRJIzZUJ4Qn93POpxaTvK4Mc777P4aRxuB450GW+1U81MM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.205 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-il1-f205.google.com with SMTP id e9e14a558f8ab-3ddb9c3b6edso6600035ab.3 for ; Wed, 11 Jun 2025 19:21:31 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1749694890; x=1750299690; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=euGFcYxwvILslc6mSywz+MxOLipSHXfa2whFFIad6xc=; b=kOYuae5lXvNRdsi3mGfXlOjeVt/hQKTtkyR3ir9/51tazmXUYzT72upgHyG/voblH0 hKJmEm/mCk6xRztV3rz1NxsiH741f/hFg5iN+3wFDvgzZT22rKwGOAOFF0qbpPF36HH6 sJHQheIGcn7ejfTVccU6qy6kDH50nJA/eiEF/4hfJKpkXGey+KAyElYj0VtH+6aTxWcy CDFoQGLUIIHQ94zUQsjgDt4WsLCK850mBvKJ8jrOHcLOeruyr2DxN4Dm3DLPGMtRRcoG 5kdezqbfspt3zGec/XmIwg14Bo0q7Yi36+1iBEzRjTzYbJ4gD9/Hk9NwHpIcS6Y9yZI7 Ndew== X-Forwarded-Encrypted: i=1; AJvYcCVWdV3mZvLIXv25L1UDDE5eiYuC5DBPeqMa54KIYV9qwfDQH7hgIjsyY6Dd1hKG60S8VRT4CpQ=@vger.kernel.org X-Gm-Message-State: AOJu0YwqLdT+GzJzegSVYH3ToPj2O0YRQRS6QhR0MGqyzfPTgOERpnbt ByA+cY6ghOGNh3yybiuVM+QzTCoMS6bGAqDO0vg8szcRumlhaBLmRsPxRO7mtc9KgQzVClMt8Nc kCtPONhjUi8pWKWeXlCN4n4Lla6zvAOseftrV+FHv5cSVaFv8sBMG/b2AJqE= X-Google-Smtp-Source: AGHT+IHWtScErTlqhBbkgjND+64RgLdoX6HSAte0j6KpDkhoCjdTs0FCtfafDfD5kLkhCLtKFv9Lys3rFKoXwrmisRp5fC28Htl1 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:2588:b0:3dd:a13c:603e with SMTP id e9e14a558f8ab-3ddfb65a883mr9947575ab.14.1749694890642; Wed, 11 Jun 2025 19:21:30 -0700 (PDT) Date: Wed, 11 Jun 2025 19:21:30 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <684a39aa.a00a0220.1eb5f5.00fa.GAE@google.com> Subject: [syzbot] [net?] WARNING in __linkwatch_sync_dev (2) From: syzbot To: davem@davemloft.net, edumazet@google.com, horms@kernel.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: f09079bd04a9 Merge tag 'powerpc-6.16-2' of git://git.kerne.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16e9260c580000 kernel config: https://syzkaller.appspot.com/x/.config?x=e24211089078d6c6 dashboard link: https://syzkaller.appspot.com/bug?extid=b8c48ea38ca27d150063 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-f09079bd.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/ef68cb3d29a3/vmlinux-f09079bd.xz kernel image: https://storage.googleapis.com/syzbot-assets/1cc9431b9a15/bzImage-f09079bd.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+b8c48ea38ca27d150063@syzkaller.appspotmail.com ------------[ cut here ]------------ RTNL: assertion failed at ./include/net/netdev_lock.h (72) WARNING: CPU: 0 PID: 1141 at ./include/net/netdev_lock.h:72 netdev_ops_assert_locked include/net/netdev_lock.h:72 [inline] WARNING: CPU: 0 PID: 1141 at ./include/net/netdev_lock.h:72 __linkwatch_sync_dev+0x1ed/0x230 net/core/link_watch.c:279 Modules linked in: CPU: 0 UID: 0 PID: 1141 Comm: kworker/u32:5 Not tainted 6.16.0-rc1-syzkaller-00003-gf09079bd04a9 #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: bond0 bond_mii_monitor RIP: 0010:netdev_ops_assert_locked include/net/netdev_lock.h:72 [inline] RIP: 0010:__linkwatch_sync_dev+0x1ed/0x230 net/core/link_watch.c:279 Code: 05 ff ff ff e8 64 d1 59 f8 c6 05 76 2e 2e 07 01 90 ba 48 00 00 00 48 c7 c6 c0 88 e3 8c 48 c7 c7 60 88 e3 8c e8 64 96 18 f8 90 <0f> 0b 90 90 e9 d6 fe ff ff 48 c7 c7 44 3e a8 90 e8 fe 8e c0 f8 e9 RSP: 0018:ffffc900064a79f0 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff8880368fc000 RCX: ffffffff817ae368 RDX: ffff88802990a440 RSI: ffffffff817ae375 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 1ffff92000c94f48 R13: ffff8880368fccc5 R14: ffffffff8c5909c0 R15: ffffffff899b8950 FS: 0000000000000000(0000) GS:ffff8880d6754000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555560fdf808 CR3: 000000000e382000 CR4: 0000000000352ef0 DR0: 0000000010000007 DR1: 400000000000000c DR2: 0000000000000000 DR3: 0000000000000005 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ethtool_op_get_link+0x1d/0x70 net/ethtool/ioctl.c:63 bond_check_dev_link+0x3f9/0x710 drivers/net/bonding/bond_main.c:863 bond_miimon_inspect drivers/net/bonding/bond_main.c:2745 [inline] bond_mii_monitor+0x3c0/0x2dc0 drivers/net/bonding/bond_main.c:2967 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402 kthread+0x3c5/0x780 kernel/kthread.c:464 ret_from_fork+0x5d4/0x6f0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 --- 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. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup