From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f79.google.com (mail-oo1-f79.google.com [209.85.161.79]) (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 63B10355F45 for ; Thu, 26 Mar 2026 05:13:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.79 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774502006; cv=none; b=hobXc2hxsNLI8Vjn3U3QFROkbn+MrD1IVqQEdSF8afx6GZc06HAcL8HTifMEGpcHK0ZT707A3nvXL+YchHM5zReOmMXwuRRgVdrczRLxy4eCCs3dzJQkJTya2pXLgGpNfnmmuXdiZXf3CvdR2jhm9IUxTmwkjWP7YXjFG/un694= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774502006; c=relaxed/simple; bh=u+l/c3cYmqPRnqZRMHia+c6QMMNCBeloKC59kKaXAPw=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=Q43rtFczSTYT+6JMayktJf5rb1gZT3ENSyfV2sNR8+MwCMAgxhZJ4n6p4vhAmPctCS3eQIaUNN82jRCjaPl+SlfdXuBVCPNEu5+30T2khsjv5f3JN36r9H5jfMR3e/gZa7V8R2oi7Oe7bL7hOkiOH8zwIwg+YVM/0KPVcOdvXO4= 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=209.85.161.79 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-oo1-f79.google.com with SMTP id 006d021491bc7-67e0d0907a7so1633208eaf.1 for ; Wed, 25 Mar 2026 22:13:25 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1774502004; x=1775106804; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=8ewCOCxTUrYuI2/74x2RPEf4HEXCrVCh4hNpAPGlOa4=; b=cZ9om/biki5ZpWx6hC5whzin4+OoqnEX4cjWe7PAXhddN9I0U8j+TYScFMgCMN8njR xIsmR5gkPShpZ54+9ultQY7CNOftECvgg8c8Qc/904o4F+Rv+wqkvtgcuqa6bzbf3nZp JuXTDh/353Q/ESp5QOCOkrQqJqlNZ1KCgGf31oPvG9YgrqFBKO9wwa6EAk0hfOiJ5CAe 8Pq4EPRMGdHUtVeBnSwxGjuLli9oShlNtwZEqKf/Q4+YpWCf/VCLizuS0Q/CIxI+sa8N /N9S9umJrbTpjBqrjnhwC/PIbmf3WQHt0VTOgV36I0qyiIhLuRDRleU1re7q+IGjyduO mxnw== X-Gm-Message-State: AOJu0Yxo43jGXpjI4h1vOgtkWY6uYuDO17xntfoiF4EXczT0Em7UwuOR qoj50g1Htveq8LZPP66+dMbs+WMaB8rXY3EauCwUjZKgh5lF5NL1uRpNkUgykShVpHhcohIwfwR uQKkjk4fFJqFIl/LYSr5vl4iCX7sOtFb+7CBELBmPdvbUBo83u7qXg9ehBQTKcw== Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:4de4:b0:67e:1c:dd88 with SMTP id 006d021491bc7-67e10d1b6b8mr111259eaf.29.1774502004411; Wed, 25 Mar 2026 22:13:24 -0700 (PDT) Date: Wed, 25 Mar 2026 22:13:24 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69c4c074.a70a0220.23629d.0009.GAE@google.com> Subject: [syzbot] [media?] INFO: trying to register non-static key in as102_dvb_dmx_start_feed 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: bbeb83d3182a Merge tag 'kbuild-fixes-7.0-3' of git://git.k.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1749d6da580000 kernel config: https://syzkaller.appspot.com/x/.config?x=45cb3c58fd963c27 dashboard link: https://syzkaller.appspot.com/bug?extid=3f395d8da879a58fb019 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=151e5e16580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11334b52580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/fed7fabd5bd6/disk-bbeb83d3.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/3776359aa4d4/vmlinux-bbeb83d3.xz kernel image: https://storage.googleapis.com/syzbot-assets/6ea274e547d3/bzImage-bbeb83d3.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+3f395d8da879a58fb019@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: 1 UID: 0 PID: 6076 Comm: syz.1.43 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 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+0xad/0x2cf0 kernel/locking/lockdep.c:5112 lock_acquire+0xf0/0x2e0 kernel/locking/lockdep.c:5868 __mutex_lock_common kernel/locking/rtmutex_api.c:533 [inline] mutex_lock_interruptible_nested+0x5a/0x1d0 kernel/locking/rtmutex_api.c:566 as102_dvb_dmx_start_feed+0x70/0x290 drivers/media/usb/as102/as102_drv.c:139 dmx_section_feed_start_filtering+0x518/0x6c0 drivers/media/dvb-core/dvb_demux.c:977 dvb_dmxdev_filter_start+0xcf4/0x10e0 drivers/media/dvb-core/dmxdev.c:760 dvb_demux_do_ioctl+0x473/0x540 drivers/media/dvb-core/dmxdev.c:1083 dvb_usercopy+0x199/0x2e0 drivers/media/dvb-core/dvbdev.c:996 dvb_demux_ioctl+0x29/0x40 drivers/media/dvb-core/dmxdev.c:1201 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xff/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa44073c799 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffd63530b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fa4409b5fa0 RCX: 00007fa44073c799 RDX: 0000200000000200 RSI: 00000000403c6f2b RDI: 0000000000000004 RBP: 00007fa4407d2c99 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa4409b5fac R14: 00007fa4409b5fa0 R15: 00007fa4409b5fa0 --- 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 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. 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