From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot1-f78.google.com (mail-ot1-f78.google.com [209.85.210.78]) (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 088C02BE03B for ; Thu, 6 Aug 2026 00:12:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.78 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785975158; cv=none; b=uZ8i6ay3Pizkrm2ycFr1PT6DUO4iHyXNw6PPYilK9Y9c51pENqloIdxFayAYIU5szVbEAwJpi2hgjMD1ezJhWNJackKTWB+UpGWFc8UTJk/sXrfN++/tFTgsAj3G2Mzpi28qf2wgMOrM4UaKyvluJoE2qDdxyCq/C1+DznDnmqc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785975158; c=relaxed/simple; bh=bIALpx1CXVLdDN8p5i5hrudHhkyx+biMnkip5hypfN0=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=evIURdZjFg9Z7PJibzGFcK13Tb7zeQNmWFKJ7/AVL0UKpUg44Ygz7ZpnFcMOlATiUu4eQj0x64aKy8woEjKZdjF17uvRaxbiyl0kq6hM9szBoFOrwqmD6pS5bSaHyXS55WE5OTTERYvIqBXAzWHODMf31UJeTaJPoc2SoDDqmZ0= 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=209.85.210.78 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-ot1-f78.google.com with SMTP id 46e09a7af769-7eb64224fd2so2546061a34.0 for ; Wed, 05 Aug 2026 17:12:36 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1785975156; x=1786579956; 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=780tSsCyIGPFXmHHr+TYr749n1cZQtCj/2NCjvnVRqA=; b=K0Fzt4rYGBwT1jVtQ+zplJGCPKIaQ4O/Kk2oL08fONElN4gNCUCNStNKL1jV5mxM6p ku9qiqHe6efciMNqHpzaHinW2+H3LOfI55RTEjOdnFKcYYPeekAESbp+9xLPu3F3xEzB R5eW9xwF5TDH/0VVc5LDGvtmvnvqCid1hkWSq3Jx1fNfuiYxtMJ45i/MK0h3iHaDAByj 9jqZvFMgEOsNfMxELZDVpimq9G6W0Rq1LgtsdN1oluNleNo+h+2HNwPdNP270L9wIAPy k/fXPcwAbjcKjvRLqmGUqhYNpgktuBEWz2oF0/98RIwntcjoxFHTbwZ7tBRCvez4764/ i3gg== X-Gm-Message-State: AOJu0Yywnbf78WhrMcEKN1ulejrx/dxyUbeKwpWmRZa83kvuBDNPxZZM fcjTxlNQMb9EMdno4XC4HBMb3wUnUPCWB9EPRrvpcWaw4v6JO/w0PUKFxSor2HVFGXL7N0nkcRO 190ni0vhcTGD4DVE3pGyl+sI4ra/V7HoJVmLpTc7YUnKmgDw0pvh9FZmaoXoH+g== Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:8187:b0:6aa:1633:7af9 with SMTP id 006d021491bc7-6ae97038ad5mr5936841eaf.35.1785975155968; Wed, 05 Aug 2026 17:12:35 -0700 (PDT) Date: Wed, 05 Aug 2026 17:12:35 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a73d173.5aeeccc9.207e63.000a.GAE@google.com> Subject: [syzbot] [media?] INFO: trying to register non-static key in as102_stream_ctrl From: syzbot To: linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, mchehab@kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 075b74841bd0 Linux 7.2-rc6 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=133e8cc6580000 kernel config: https://syzkaller.appspot.com/x/.config?x=cb17729fb04b1e3a dashboard link: https://syzkaller.appspot.com/bug?extid=2a3de29133b40e8f69f3 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/678e77cc37b9/disk-075b7484.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/cc9f771e7069/vmlinux-075b7484.xz kernel image: https://storage.googleapis.com/syzbot-assets/71a5d4620b85/bzImage-075b7484.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+2a3de29133b40e8f69f3@syzkaller.appspotmail.com INFO: trying to register non-static key. The code is fine but needs lockdep annotation, or maybe you didn't initialize this object before use? turning off the locking correctness validator. CPU: 0 UID: 0 PID: 8032 Comm: syz.4.881 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 assign_lock_key+0x133/0x150 kernel/locking/lockdep.c:984 register_lock_class+0xcc/0x2e0 kernel/locking/lockdep.c:1299 __lock_acquire+0xab/0x2ce0 kernel/locking/lockdep.c:5112 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868 __mutex_lock_common kernel/locking/rtmutex_api.c:559 [inline] mutex_lock_interruptible_nested+0x5a/0x1d0 kernel/locking/rtmutex_api.c:592 as102_stream_ctrl+0x27/0xc0 drivers/media/usb/as102/as102_drv.c:259 dvb_frontend_open+0x7eb/0x1410 drivers/media/dvb-core/dvb_frontend.c:2825 dvb_device_open+0x258/0x350 drivers/media/dvb-core/dvbdev.c:109 chrdev_open+0x4dc/0x600 fs/char_dev.c:411 do_dentry_open+0x849/0x1420 fs/open.c:947 vfs_open+0x3b/0x350 fs/open.c:1052 do_open fs/namei.c:4700 [inline] path_openat+0x2e60/0x3850 fs/namei.c:4863 do_file_open+0x23e/0x4a0 fs/namei.c:4892 do_sys_openat2+0x115/0x200 fs/open.c:1368 do_sys_open fs/open.c:1374 [inline] __do_sys_openat fs/open.c:1390 [inline] __se_sys_openat fs/open.c:1385 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1385 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5093cae84e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007f50916bdb28 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f50916be6c0 RCX: 00007f5093cae84e RDX: 0000000000000802 RSI: 00007f50916bdc00 RDI: ffffffffffffff9c RBP: 00007f50916bdc00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd R13: 00007f5093f763f8 R14: 00007f5093f76360 R15: 00007ffc19dbf768 --- 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