From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f72.google.com (mail-oo1-f72.google.com [209.85.161.72]) (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 715EA39A7F9 for ; Thu, 26 Mar 2026 10:12:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774519924; cv=none; b=N6uSI1mRTh/nR9YlmY+LYD07ciWb3OZhYXW63QQr84BzPzsC1ggNow7x3mMlFwrkcmFgWY+rROWlSceCAkc2WC9OFr1tz85q50Li5OJcgksDbLKukhkrKMa8MA7qyOO2J35uekA6FfBwP1fdGNH9ULTQTV9/3Qaar2t1WM3U4QU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774519924; c=relaxed/simple; bh=X/jQ2bxLKr/hZcZCpiTUAt8ojaZY9eAdM0HvTU4ZbL8=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=JsDnehTCfzKYgsCyj6BsWOrhferXlNamXWWxXStYLs4KjwhXvKaTqZ2r0JmI28fBFQJxI8Fy6CwmZdrsqHe21i07cTbaj9n2TawxDahFWKVB8GO3ZtkNvoD8yU3OMOnb1ow0ClZa3rsGei9Oprzokt08iRr0sn2tE7hNgvpdP40= 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=209.85.161.72 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-f72.google.com with SMTP id 006d021491bc7-67e0cad6396so1089878eaf.0 for ; Thu, 26 Mar 2026 03:12:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1774519922; x=1775124722; 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=zZaK/x4zmue3MEg0eHZaqs88UivArDE/hR7I3vlLnIU=; b=HgpWcEKS5Bf8aSV1thJ2FjjLpEyPBmya3KqkkPj7LTH0mPfsi2GIBrlgv9ous89eZ/ zKTcAWcCTUoMH2E46KCqa0utNUabecU+AiEQ5y8L8JVQ0gvw6HhPaMPDn7rvxSCVRruv KNJuPuEkIrpRja0O7CBzP7Ai9CRJ447jos7it3qXFHe6E3X4tzVkGN2POuV1bQJaxjnd qpw/YJc3InVaFAPxSep1i0OuIzVfdJeWgXc5BPzZnMwP87OI2Esp1dBPY14wiPwjzxY2 Eh+2UtgeWPjnoXkoU2R95CoG/mwDWNzzTqGflBCQJuwPnoqWnnWiXeeGwa/LB/IGDPov cGHQ== X-Forwarded-Encrypted: i=1; AJvYcCWM2no64QJhmk1Ir7eNv68OB5772aiOTNVY+Y1Kb//4Wsv/fhrKUzyXs1DF2jH8x/+EZRvHMaY0pI2gTcw=@vger.kernel.org X-Gm-Message-State: AOJu0Ywzv4Rv1jfJMsw6jsX6KbPdHuVuxlkHMxsyiuRMhmKzjTOzzLLj +E0eGrL83l/w9Bm2j3rrQaUaVdaU3BLOyiR+JVeDuoZhXu9YVHtcL977pFBl9xN9PiJoBd7hIkA Uu8i7PRCYG3nrtpwZky0rnFSwTiipn9Piec1i2oFShJ22aCI6JSbvRwOVOHw= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:1f11:b0:67d:fedc:4b21 with SMTP id 006d021491bc7-67dff5dcd62mr3525760eaf.72.1774519922485; Thu, 26 Mar 2026 03:12:02 -0700 (PDT) Date: Thu, 26 Mar 2026 03:12:02 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69c50672.a70a0220.23629d.0011.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: 6751 Comm: syz.0.17 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: 0033:0x7f284b12c799 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:00007f284a78e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f284b3a5fa0 RCX: 00007f284b12c799 RDX: 0000200000000200 RSI: 00000000403c6f2b RDI: 0000000000000004 RBP: 00007f284b1c2c99 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f284b3a6038 R14: 00007f284b3a5fa0 R15: 00007ffcb03ec028 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=168b2eda580000 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=143b5e16580000