From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f206.google.com (mail-oi1-f206.google.com [209.85.167.206]) (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 12C5B3DDAE6 for ; Thu, 6 Aug 2026 08:15:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.206 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786004129; cv=none; b=SKXEj+i9l1AeQ20ml7xoJVdvzIk4rmWA3ejedeu0cegWJoy4AGU1DuiNkIXAHQ5/pH3lgeTI1KK81Ka+0LBiPh/K4HLu6h6UEIuxHFp6iTMjgcW4+4l/0XYoEsjteLCNxpkZ4O3Z9YFVbyfmSSE8TjnGDZyl1myD8u1kbG1bzn0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786004129; c=relaxed/simple; bh=a1h1x1ZAeIHmmSfmBegnr5YouoKxVRGT+g+JQH6cIfQ=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=A8iEHQDoIa1M/iOXmZGGktE15pGVCnjyP3SaG9rooVzXiDPjvh/8wrmGy/XAcYPGVmrhje2euY49WXzgvLDyMgqprFEaIB1XRA5sHoixelILYdhwtDvYL1WoipBooPq0EgdvTy/1VCsYhfFwSCrKghNKsI8w1Jj4XIRTYDHgsfI= 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=209.85.167.206 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-oi1-f206.google.com with SMTP id 5614622812f47-4a5a66f375dso1097000b6e.1 for ; Thu, 06 Aug 2026 01:15:27 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786004127; x=1786608927; h=content-type:to:from:subject:message-id:in-reply-to:date :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to:content-type; bh=ZZmP7CGnY8dLE5xsAqpL3r/njAWOqQxros44KpaNhUk=; b=CBP9UdDyrLVkZlJMh0kd+ZDOykneOpsA3bPdke3dl4nLPmFgc6e+CXV59Zo9H6Bqmr nonZe9jhbuuBWL+tJe8rmZDrdJrohQUK+Ay9cSJCzVG3iH+H2zit3Xp11QBjzPVethOo WgvXXaMcnjkJSI5xmfjk8UZ1EbKJswC4CiH6x3C0otWNiVzH8ROsHhHSMxO/6qXMgdgI gar5kH83c7RMrhqFLcWWGdd5bkKhadwgfFLtSdBsNyxiMBN/+7yTROzpf6oLTVGAdudW 5olndv530QRu4r1CSUE5yO7XEHF1aOoXUDquvxq+ne3qYvtqQuxklvi8LmLompW7qgSj TAeA== X-Gm-Message-State: AOJu0YwCxYiMxCuEpDPvOoQSTtk3EeIDFFVQry9Z5ebJz8eb/M3tAicN RVLvydaQpzYhDofBhLyeHwcQXKF5rN2Lryy0tAm09eRXTbkXQGivGuW14THhUdjT6sbxjUxf9om oE6ijA06KLzYxhLURvA+kXvUb0PtLQOElNibFf8lZk/r/Vn2fHFs6PaZrKz7h/A== 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:c90:b0:69e:42fd:4070 with SMTP id 006d021491bc7-6ae96c56124mr6788134eaf.8.1786004127035; Thu, 06 Aug 2026 01:15:27 -0700 (PDT) Date: Thu, 06 Aug 2026 01:15:27 -0700 In-Reply-To: <6a73d173.5aeeccc9.207e63.000a.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a74429f.9c11d2ce.289b96.0097.GAE@google.com> Subject: Re: [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" syzbot has found a reproducer for the following issue on: HEAD commit: 0d8395707651 Merge tag 'soc-fixes-7.2-2' of git://git.kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=14458e49580000 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 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16e3bcc6580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/e2598164f27a/disk-0d839570.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/20273f2393d5/vmlinux-0d839570.xz kernel image: https://storage.googleapis.com/syzbot-assets/8ad5a994ee24/bzImage-0d839570.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: 6396 Comm: syz.0.92 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: 0033:0x7f17899ae90e 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:00007f1788fc9b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f1788fca6c0 RCX: 00007f17899ae90e RDX: 0000000000000802 RSI: 00007f1788fc9c00 RDI: ffffffffffffff9c RBP: 00007f1788fc9c00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd R13: 00007f1789c763f8 R14: 00007f1789c76360 R15: 00007ffcf12b1158 --- If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing.