From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oa1-f80.google.com (mail-oa1-f80.google.com [209.85.160.80]) (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 AD27F175A79 for ; Mon, 10 Aug 2026 00:23:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.80 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786321410; cv=none; b=AL0wi/PXLN73TqjRPMLKq6SMrBo/3uoYrJRowdioAFx9rN9ydvy5I5Yvdee8tyrHpO8wpoSTq7k1JvTChGsOZDH/WabRZp2BNiSrqdudQp6djtjjcz9nnL1RiDSpk/wV4DRYIrZy2xjlcwkgpV1kRO2GTrdb25xwrSoZQISC7GI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786321410; c=relaxed/simple; bh=YuGahVHRFinUqQx+mO/hB9oyI9B8rcRlUs0FB0jbYec=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=UJNx0VFyzGcAhXVvAiH2SD0frrVjEMNn0eo+dn5XnTQfcZOgM8jDNGN4o14ao/Q0lZVeJ1qnOK9OGEKUVPcgsNjhO7H3y4zw0KkNvmHOR2q7tp93lpYxqMOa083oa6Gwb9Z+DXyM6aottBqMPBz2k9+STnj2O3fyKVU7+Ps3aKA= 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=209.85.160.80 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-oa1-f80.google.com with SMTP id 586e51a60fabf-459b87acd2fso353595fac.0 for ; Sun, 09 Aug 2026 17:23:28 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786321407; x=1786926207; h=content-type:to:from:subject:message-id:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=ShGF2KcDYdqwhpn5hmhw33ODEG0xR1Afm1j7vmU+RWk=; b=BbU9jjUhnitlcmuvqQtXaaXKUhOJgD3BdrZIFnbIEvYTFg/oEMxc0ZfmEhsgkygATk XDerEOWyi4qLBRkkp/Gl+A4wz0FziUfR8BLovxruNnmzjlte28HLs3zKJZQuBLCk0qhF KMhtzFBp+gUDkBwAFMr2lxuBPIT8yaeQxGwWbLH7izrzOaJyYBe04IXuLiuYOcWJLWhv Ha3XM2kkd7XkH5+Jth8xz9QFxtm+KLp1CBcLn6iXiZNaGbhwjGxvBAYS17hxmKcdoDDc /Jt9Nlr3ybXXz4ajahkEfa8368jj774VUWpJnS1ovsSmjZEa0RoJ4Gbc07FFkSK5cyvI cfZg== X-Forwarded-Encrypted: i=1; AHgh+RpcYNxkSeNRe4qiVQQ43tA+NHjgpgwvhpG3mjn5uDwhrReLUWzHnwxcNlfndvLdXjHtkKg8q+zhbk4N1H4=@vger.kernel.org X-Gm-Message-State: AOJu0YzMxy8WiTObHyDKDVyntfZl1abphSrfU1uDZuKDlr8BWUwPqRAn 4wEwnebEhA4ZUl3h8D91dv8Vki/dGt2D4imHmt7q7mgNXwSr8cy/7AK5yT2GLG4TSQcpM44a49s 15umpTg2BeUSjMdgGRHVfObYq3MRAZQzzrCqV5sttegmMHj1cKRBem0QxrbY= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:178b:b0:495:ce61:4e0c with SMTP id 5614622812f47-4b1ab72c113mr9102432b6e.3.1786321407606; Sun, 09 Aug 2026 17:23:27 -0700 (PDT) Date: Sun, 09 Aug 2026 17:23:27 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a7919ff.9c11d2ce.289b96.00e1.GAE@google.com> Subject: [syzbot] [kernel?] WARNING in wiphy_unregister From: syzbot To: dakr@kernel.org, driver-core@lists.linux.dev, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, rafael@kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: cc2b5f627e8c Add linux-next specific files for 20260714 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=130f9bb9580000 kernel config: https://syzkaller.appspot.com/x/.config?x=2290ccbf984c524f dashboard link: https://syzkaller.appspot.com/bug?extid=2b175fce6f3a34469a87 compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/6836f8efb1da/disk-cc2b5f62.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/0109d3477cc7/vmlinux-cc2b5f62.xz kernel image: https://storage.googleapis.com/syzbot-assets/c2e49e350bbf/bzImage-cc2b5f62.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+2b175fce6f3a34469a87@syzkaller.appspotmail.com ------------[ cut here ]------------ rtmutex deadlock detected WARNING: kernel/locking/rtmutex.c:1698 at rt_mutex_handle_deadlock+0x21/0xb0 kernel/locking/rtmutex.c:1698, CPU#1: kworker/u8:141/6021 Modules linked in: CPU: 1 UID: 0 PID: 6021 Comm: kworker/u8:141 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: netns cleanup_net RIP: 0010:rt_mutex_handle_deadlock+0x21/0xb0 kernel/locking/rtmutex.c:1698 Code: 90 90 90 90 90 90 90 90 90 41 57 41 56 41 55 41 54 53 83 ff dd 0f 85 81 00 00 00 48 89 f7 e8 16 40 01 00 48 8d 3d af 6d 81 04 <67> 48 0f b9 3a 4c 8d 3d 00 00 00 00 65 48 8b 1d 73 6b 70 07 4c 8d RSP: 0018:ffffc900067373b0 EFLAGS: 00010286 RAX: 0000000080000000 RBX: 00000000ffffffdd RCX: 0000000000000000 RDX: 0000000000000006 RSI: ffffffff8d98ba58 RDI: ffffffff8fd3e230 RBP: ffffc90006737560 R08: ffffffff8fd0c47f R09: 1ffffffff1fa188f R10: dffffc0000000000 R11: fffffbfff1fa1890 R12: 1ffff92000ce6e84 R13: ffffffff8b526ec2 R14: ffff888037d60b68 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888125af2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000560e6c0cc950 CR3: 000000000e1b0000 CR4: 00000000003526f0 Call Trace: __rt_mutex_slowlock kernel/locking/rtmutex.c:1760 [inline] __rt_mutex_slowlock_locked kernel/locking/rtmutex.c:1787 [inline] rt_mutex_slowlock+0x73c/0x780 kernel/locking/rtmutex.c:1827 __rt_mutex_lock kernel/locking/rtmutex.c:1842 [inline] __mutex_lock_common kernel/locking/rtmutex_api.c:560 [inline] mutex_lock_nested+0x168/0x1d0 kernel/locking/rtmutex_api.c:578 device_lock include/linux/device.h:1104 [inline] device_del+0xa9/0x8f0 drivers/base/core.c:3923 wiphy_unregister+0x406/0xb10 net/wireless/core.c:1323 ieee80211_unregister_hw+0x1e2/0x2c0 net/mac80211/main.c:1741 mac80211_hwsim_del_radio+0x28a/0x4a0 drivers/net/wireless/virtual/mac80211_hwsim_main.c:6227 hwsim_exit_net+0xea6/0xf70 drivers/net/wireless/virtual/mac80211_hwsim_main.c:7210 ops_exit_list net/core/net_namespace.c:200 [inline] ops_undo_list+0x43d/0x8d0 net/core/net_namespace.c:253 cleanup_net+0x575/0x810 net/core/net_namespace.c:706 process_one_work+0xaaf/0x1480 kernel/workqueue.c:3379 process_scheduled_works kernel/workqueue.c:3462 [inline] worker_thread+0xb05/0x10d0 kernel/workqueue.c:3543 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 ---------------- Code disassembly (best guess): 0: 90 nop 1: 90 nop 2: 90 nop 3: 90 nop 4: 90 nop 5: 90 nop 6: 90 nop 7: 90 nop 8: 90 nop 9: 41 57 push %r15 b: 41 56 push %r14 d: 41 55 push %r13 f: 41 54 push %r12 11: 53 push %rbx 12: 83 ff dd cmp $0xffffffdd,%edi 15: 0f 85 81 00 00 00 jne 0x9c 1b: 48 89 f7 mov %rsi,%rdi 1e: e8 16 40 01 00 call 0x14039 23: 48 8d 3d af 6d 81 04 lea 0x4816daf(%rip),%rdi # 0x4816dd9 * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 4c 8d 3d 00 00 00 00 lea 0x0(%rip),%r15 # 0x36 36: 65 48 8b 1d 73 6b 70 mov %gs:0x7706b73(%rip),%rbx # 0x7706bb1 3d: 07 3e: 4c rex.WR 3f: 8d .byte 0x8d --- 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