From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f79.google.com (mail-io1-f79.google.com [209.85.166.79]) (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 E5059280A5C for ; Thu, 14 Aug 2025 23:05:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.79 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755212732; cv=none; b=r7PMo1wCcc8jGymoWlV/CCD9Eycc+PSFUEYtmw1SbGm9tx9cgVsC14hQsd5mbiY+7RTSxaNE1MzRqn2+jSx7c/oJ4gS+MqjZwRaslr+b3hlDwfLYlx9iYEBtVSuAtgj5UxvVyl1v/h4cnygHFxQyIakAhrZf/MWbz+cArY7VlSw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755212732; c=relaxed/simple; bh=KwTK/suL9huNNzSBcew9y/pncOtjfQmErx2Nfx/hElE=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=F6IBWVqywr+85B3RhkfUNr1LuO51nKXOrFRN/Uiub6fFU3Hkt5ptKIDy7v6U/gbIWbCyn4cWQBmkcmSpDUtS3+QqFgsO4V0Ioy1M1tOwNA1X7JddMzxS4CoADfEgiPzFSqtwgg7fs8wnAi07DEWVM2Ca1FxWKLUNk22PQrgrH2c= 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=209.85.166.79 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-io1-f79.google.com with SMTP id ca18e2360f4ac-88432ccc211so157168439f.0 for ; Thu, 14 Aug 2025 16:05:30 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1755212730; x=1755817530; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=lsw2552WQDQS4l6tKufTwDr+DSYsagSdBDhGcJFbtHY=; b=Hc0ZSj3av0O4oAPu5z4RwDMpxJ4xA/mm3oe6sI1gP8lp/1/QI90Xeb/i2RB6fEF5tb W0C+cJSHBU70Cx4Eng+IKykxsF1/jovr3GNnG7xH8smRYcnBioDmRqvmbh1FEaN62ur3 miQYZzEmzIDxyVShOd0hPoM0wA7mNPxvPm9EdaxSO8356WsB9jCTrpJgyIsF8GYnABYI AuTrassQLCKBkP9eJ5h90C+mYpzelvIl9LpMM9td9A+TlhDOUhnVC+dIcr52Dix7Dvon Sw23nQj2eHgUpWcKY5XGc8KXBktf7aawhvGONRfMblr3gX4vRlnMPyRWt4rsf2RN1kHP 7ELQ== X-Forwarded-Encrypted: i=1; AJvYcCV7VeRqPYLfUO3jJKz1fM+kNqHn3Ltvaz2OsOqdMrPi91wVXcM8a4+yW36B+QplzE2I36v67Ks=@vger.kernel.org X-Gm-Message-State: AOJu0YzFl2ppzR3D0XRrN5t61fixFLWqz+myHedvBi6lAOfwb9zaOe3+ VXJwNYz7SxneWcXxAbmQucQwJVdU0g/1nGM9CqMlE7i0Of+Yw71bJ8Nz8RhTwRnLDpYLB1qZxif TBm6uG4ATbjYY/C/glkDK9dXR1oQ8lAd0KPJ/WXBirUHQsQ15PUfANEw62Ws= X-Google-Smtp-Source: AGHT+IF/vrp4iK90AdDyqbOiaRz6aUsA58MH0VT5AvbcyfvEj7EEI27YoWZNQdw6kQOT+5WmINPs4UFLSvxq/0P45AL2iQP1nGrz Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:3a09:b0:3e5:7282:4a95 with SMTP id e9e14a558f8ab-3e572825034mr84251525ab.24.1755212730073; Thu, 14 Aug 2025 16:05:30 -0700 (PDT) Date: Thu, 14 Aug 2025 16:05:30 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <689e6bba.050a0220.e29e5.0003.GAE@google.com> Subject: [syzbot] [nfc?] [net?] WARNING in nfc_rfkill_set_block From: syzbot To: davem@davemloft.net, edumazet@google.com, horms@kernel.org, krzk@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: 8f5ae30d69d7 Linux 6.17-rc1 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16c80af0580000 kernel config: https://syzkaller.appspot.com/x/.config?x=13f39c6a0380a209 dashboard link: https://syzkaller.appspot.com/bug?extid=535bbe83dfc3ae8d4be3 compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/46150b6d2447/disk-8f5ae30d.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/1c604b2b2258/vmlinux-8f5ae30d.xz kernel image: https://storage.googleapis.com/syzbot-assets/9c542f0972de/bzImage-8f5ae30d.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+535bbe83dfc3ae8d4be3@syzkaller.appspotmail.com ------------[ cut here ]------------ rtmutex deadlock detected WARNING: CPU: 1 PID: 9725 at kernel/locking/rtmutex.c:1674 rt_mutex_handle_deadlock+0x28/0xb0 kernel/locking/rtmutex.c:1674 Modules linked in: CPU: 1 UID: 0 PID: 9725 Comm: syz.8.874 Tainted: G W 6.17.0-rc1-syzkaller #0 PREEMPT_{RT,(full)} Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:rt_mutex_handle_deadlock+0x28/0xb0 kernel/locking/rtmutex.c:1674 Code: 90 90 41 57 41 56 41 55 41 54 53 83 ff dd 0f 85 8c 00 00 00 48 89 f7 e8 c6 2c 01 00 90 48 c7 c7 a0 08 0b 8b e8 79 08 8b f6 90 <0f> 0b 90 90 4c 8d 3d 00 00 00 00 65 48 8b 1c 25 08 b0 f5 91 4c 8d RSP: 0018:ffffc900043a7950 EFLAGS: 00010246 RAX: 89021558f1df5a00 RBX: ffffc900043a79e0 RCX: ffff888025bb3b80 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900043a7b00 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffed1017124863 R12: 1ffff92000874f38 R13: ffffffff8af82119 R14: ffff888036e55098 R15: dffffc0000000000 FS: 00007fec70d5e6c0(0000) GS:ffff8881269c5000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fce013b0000 CR3: 000000003ebbc000 CR4: 00000000003526f0 Call Trace: __rt_mutex_slowlock kernel/locking/rtmutex.c:1734 [inline] __rt_mutex_slowlock_locked kernel/locking/rtmutex.c:1760 [inline] rt_mutex_slowlock+0x692/0x6e0 kernel/locking/rtmutex.c:1800 __rt_mutex_lock kernel/locking/rtmutex.c:1815 [inline] __mutex_lock_common kernel/locking/rtmutex_api.c:536 [inline] mutex_lock_nested+0x16a/0x1d0 kernel/locking/rtmutex_api.c:547 device_lock include/linux/device.h:911 [inline] nfc_dev_down net/nfc/core.c:143 [inline] nfc_rfkill_set_block+0x50/0x2e0 net/nfc/core.c:179 rfkill_set_block+0x1e5/0x450 net/rfkill/core.c:346 rfkill_fop_write+0x44e/0x580 net/rfkill/core.c:1301 vfs_write+0x287/0xb40 fs/read_write.c:684 ksys_write+0x14b/0x260 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fec72afebe9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fec70d5e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fec72d25fa0 RCX: 00007fec72afebe9 RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 RBP: 00007fec72b81e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fec72d26038 R14: 00007fec72d25fa0 R15: 00007ffe1f71d718 --- 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