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 0FB8A367B95 for ; Tue, 11 Aug 2026 18:04:35 +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=1786471477; cv=none; b=eDYB5ixc9L1CMdiXrVBx19/TiVkI/cZlebqddQP0g1kdYJNYer9Jr4sL4SwXD6E9xSYNusMAl+AI9/isV8abizlgAgi2lMIYxNUvP3spRGnFqmsLcQi7aYRyaj7DrVPf4sCAWyxm17Id4pHoM4+DcRr2ua/VcyKSsvN7qM2QhNA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786471477; c=relaxed/simple; bh=3LfJcf/I7r34fKnR61q+T2UM+9UDeTYTUNglB/YxzP4=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=AmoeeYSiC8EAvrO+OamR5ulge9AFa6Cex0OubxQmhzFbadKcDCcqcvQTYrguEiSPDjp7k1H7sosUoHCVVqWh+OJeVfSQgQd6MDpsA1Tc//XjCu4zxSn6B7E7yN2OnErvbVZcpwf4yq/WtT7Yv9WFKYgDvM2m8O+ki5cRQhFgFsw= 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 5614622812f47-4b1bc2e44e0so176825b6e.0 for ; Tue, 11 Aug 2026 11:04:35 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786471475; x=1787076275; 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=teFiCEIoGwwbZEhr4hiDgc+M9MDZOQwVIuSpUDKMWmY=; b=O6ClORpPCXH7S4pSQVtO8wW5slT7an3AatlEfFaRsOML3vMcNQjKiWutr5/xo3OSg1 AhGm4AgsJ33UUG4QTVpTmuDxPeEdd5iZZNCd/LOZMRxwGkHBBZRgGo1kPtnq6IAuMwW3 knmOLBvu7hxgG52GVimJY59aZUHxX135QINa/JfEtjLlTCDWtb9OZCnRRwGadY/tFY0D J1RVvN+Yt7vLwhkSRwrDuJe+GuAVMCadeKJLQkRkmk7xcFk9RMao99ypp7JojYw5xG9R jB4BqI7cRQQks38X8S/hyqczO8N6gn3LUCkf5MQcdbB8Qpq2LT32DIWlZDbvREVVJkcz 05gA== X-Gm-Message-State: AOJu0YzPq6cO2Iok4F9Iwl/vSjDjhfRaDKR9sgdf5RCqzLxLbfk00E4U v3wIug4VCqo4/9noXn+tSbcFmr53bFd6+4NYCnrgXS8Iqp+QUGpcXBsyS9sXJUq0OlBEPibs794 AZCJJMP0M2T/xeBHtgow/Zks66KkiLLtxv1WunHxRMs9hyhxPDCiDdDTMw/iFFA== Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:4feb:b0:492:3ed0:9073 with SMTP id 5614622812f47-4b209a4e473mr1516905b6e.4.1786471474903; Tue, 11 Aug 2026 11:04:34 -0700 (PDT) Date: Tue, 11 Aug 2026 11:04:34 -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: <6a7b6432.ed659fcc.23056a.007c.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: d58772d8520c Merge tag 'regmap-fix-v7.2-rc7' of git://git... git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=177da879580000 kernel config: https://syzkaller.appspot.com/x/.config?x=158601bb8cb292dd 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=15ba92c6580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11397879580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/1cadbedb5362/disk-d58772d8.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/227925db8202/vmlinux-d58772d8.xz kernel image: https://storage.googleapis.com/syzbot-assets/23ed8848c469/bzImage-d58772d8.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: 7688 Comm: syz-executor247 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: 0033:0x7f7c03271f8e Code: 08 0f 85 65 e1 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 90 41 57 41 56 4d 89 c6 41 55 4d 89 cd 41 54 55 53 48 83 ec 08 RSP: 002b:00007f7c031acd08 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f7c031ad6c0 RCX: 00007f7c03271f8e RDX: 0000000000000802 RSI: 00007f7c031acdc0 RDI: ffffffffffffff9c RBP: 00007f7c031acdc0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd R13: 0000200000000100 R14: 00002000000004c4 R15: 00002000000004c0 --- 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.