From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f70.google.com (mail-oo1-f70.google.com [209.85.161.70]) (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 56B113EBF08 for ; Thu, 26 Mar 2026 11:44:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774525453; cv=none; b=mnozlZhQrnFZgZamnrjyDJBYJL9ntRSyM3Kl1Jqse/khPZ/0p1S2zr9ehq2L0xsQ+NxR2LC/k+NiOBIpScf65zOr6oPpPA0NBCHMC1QXdWlD8lct0SejFA501YmiwfBbgp4zcUwF+ZBEPiluUTyF3+EO91QIRzpfujaS48dUkRQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774525453; c=relaxed/simple; bh=P9WGebioPS7zsGpHCl1DKBMNGrvTyq1//vMcWcKLF2Y=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=M6UoOCRnLa2Jq+tw1OlhH5ZAqjcY8kf5Qyd5ny5l/0NtO43PW9GBK97t1i5vWnooba7nT+BEb2JMhuzdONg3GWZrTspNCAW6VFzMxn4XCW1TslGlVDeaXkEJH+zEpcsPGQOXJaKYa8gSyZUjoZE5NLGB3/jHl4XgB6SPphfKmEw= 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=209.85.161.70 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-f70.google.com with SMTP id 006d021491bc7-67de71f3e6cso1119600eaf.3 for ; Thu, 26 Mar 2026 04:44:05 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1774525445; x=1775130245; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=4l8o/MJEOfM9ad9wRLm2FLSmThIFfKmxwcfp5WqRyt8=; b=G4bXQIWHQN3S2wBDSKCUfjAR88tmAv1SlQBR3DNsjHEimWkWXljZYrjNbTuvGhrNoz A9Qbuk+NNWGUSQkj2QqxOTXr0U+mNi/Ry75ZLZiZPFE6McFOzoOxAg0fh373JT3RxQUq NKMK/LetITbvAh1wloZGHpRMThzh9rjVbAUkKleagF8HAWCvyTHakmsx4Q+CrQg6nbIQ alMTH92gLCeA4qtT0J0LdpvodmThYBefoakRaGkZfADTPK4OgnySqjdy9kuhRmXJdJ+b eBsiKXZpK0IRE8mcCrKFP9a2DtR1EHb1+tQjjaPk9QakjHgGm/vvaVaVaDgFyRXivEjS Q6jw== X-Forwarded-Encrypted: i=1; AJvYcCVPzsdXRqd0p+giuA+HNZAWN6/9daD0oVMS46T5RNKSfomOzFXPGwhYiRS7hQF6ybusU5c6Rc6TnYFiFJo=@vger.kernel.org X-Gm-Message-State: AOJu0Yw7OUKFir152JbpnRlmPLdy6J+ms3LcmgoFb3+VuLozpHqrccz9 l3avs3ZxHT4SaWVBDp3CKBVX50VMDmQ7WaAleJgB29GVySg44BMegG91Vo7vw611z/QPv0Ohx8m V6hhD+7ojkRZ8fUyTUFVOunnmAyJOBlBpB0+eEgoEfhBgG129cZYYUXZvR9Y= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:1746:b0:67c:9f59:23ee with SMTP id 006d021491bc7-67dff3d0cddmr3640731eaf.14.1774525444961; Thu, 26 Mar 2026 04:44:04 -0700 (PDT) Date: Thu, 26 Mar 2026 04:44:04 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69c51c04.a70a0220.38a0e9.0000.GAE@google.com> Subject: Re: [syzbot] [media?] INFO: trying to register non-static key in as102_dvb_dmx_start_feed From: syzbot To: eadavis@qq.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: INFO: trying to register non-static key in as102_dvb_dmx_start_feed 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: 6612 Comm: syz.3.20 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+0x4b3/0x5a0 drivers/media/dvb-core/dmxdev.c:1088 dvb_usercopy+0x199/0x2e0 drivers/media/dvb-core/dvbdev.c:996 dvb_demux_ioctl+0x29/0x40 drivers/media/dvb-core/dmxdev.c:1206 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: 0033:0x7f7ddd77c799 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:00007f7ddcdde028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f7ddd9f5fa0 RCX: 00007f7ddd77c799 RDX: 0000200000000200 RSI: 00000000403c6f2b RDI: 0000000000000004 RBP: 00007f7ddd812c99 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f7ddd9f6038 R14: 00007f7ddd9f5fa0 R15: 00007fff7d9d6948 Tested on: commit: 0138af24 Merge tag 'erofs-for-7.0-rc6-fixes' of git://.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17acd06a580000 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 patch: https://syzkaller.appspot.com/x/patch.diff?x=10e1ecca580000