From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f77.google.com (mail-io1-f77.google.com [209.85.166.77]) (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 1A29A18BBAE for ; Thu, 29 May 2025 13:39:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.77 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748525971; cv=none; b=R5IT0bb8ca/K3XBl0GoCWJPvkFyzR7ojVk+NJ0BSf9UdyJKtSB5X/vk+M8GLUNKA7h+DqbriITbaziAcyn6QUFvvk8h1Ihc0S7xtxyuzOG1VhFHOeb0Cumwx+tKm8wiqU7AIj9FSbjaUxGBpiRHczD4ak+pYq1MtQJtvZDe+qQw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748525971; c=relaxed/simple; bh=yGQZgTTHSVx3PhFr8VKMt4lFCsY/Jmf4/Qqjo4jC7sU=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=Yz1d7SThSw3HD8OQm+vi8397k5ckCRg9YtVQN9GOTlzgoSfavH6OJmqhPIISTmfYAhhhc7NMV6sSPbloSS8InYInnEWlmfn4EAt5zA0mnwjTH4axCCLYO4BCASMZOCtiJ4lLBVhKzmGIwQBUIRYnqBn7acI+8Enn0R9MBkAmnpY= 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=209.85.166.77 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-io1-f77.google.com with SMTP id ca18e2360f4ac-85e7551197bso94217239f.0 for ; Thu, 29 May 2025 06:39:29 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1748525969; x=1749130769; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=8ADf1egfEArdae73a3H+BcUdsMSrewOrhnfelJZcO8w=; b=rlYJeuKuONvuQp/eyuoTCYFBRnk3y7XWak/GPxZbb5rK2+jVBIjFmLvWTsvl+0tZ31 ucuP3J80FA2bDSLaxs7xG845FNGvtwXIjze3kxUIXKArEE/RBFR8/AA3kK/4esQD6hU/ GzusySwnZsKwTWqLKQkz2hLZ706OzMr7gr72ShjEJdiUSgYyFi30QKn1dyy8/ySz/WV7 YTJrdoi8MXgPwWL42whjZGHDxNT0o/qDysPdG/uleokp0e6bxWjclceC3CHJZHBot+Bt zMetio2B1tSWw/VwKuIrklDX2FKsNqtzZ2ppnMZRsboaKXrCWc8hpRuf0bhrV8hwqt60 HNZA== X-Forwarded-Encrypted: i=1; AJvYcCXmN6JSZMNp31Z/V0SVJfcoajcd/aTdk3YWXXPzWMtlDq/tGf9Y6vTMKiPmZh195R1E70vlgnVNQxYyWQ==@vger.kernel.org X-Gm-Message-State: AOJu0YxWVbTVLunXxoErbnvMkoLm3FypOMQ+878rXGtSNfREj9enBAlQ xv+n8LTIJ2MSf9bKDUJdHrp3bYVGPGD9gJGRk5m0F6QWDbzdFcwBEivyH15hIgjbHC6+3imKVf/ 1zQoKW1r2ZoFWTZhjSP1xdCwAd+XoAGFqgYGIj1KSvBvlxyrw6VgmqDwdVD0= X-Google-Smtp-Source: AGHT+IFhSMpVhEhxUjV1TwvOUsxXh6I7yMPgQgjlpav2sXDD6oDkuCzgQBOJxiGdBVH2d+GutAkydgXC7k+wrCB5sD/ztBvXWINd Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:c88:b0:864:a1fe:1e4a with SMTP id ca18e2360f4ac-86cf29fdec5mr465546739f.3.1748525969214; Thu, 29 May 2025 06:39:29 -0700 (PDT) Date: Thu, 29 May 2025 06:39:29 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68386391.a70a0220.1765ec.0189.GAE@google.com> Subject: [syzbot] [media?] WARNING in az6007_i2c_xfer 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: d0c22de9995b Merge tag 'input-for-v6.15-rc7' of git://git... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=148a1170580000 kernel config: https://syzkaller.appspot.com/x/.config?x=9fd1c9848687d742 dashboard link: https://syzkaller.appspot.com/bug?extid=a43c95e5c2c9ed88e966 compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/0badcba87366/disk-d0c22de9.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/1447956c1e1e/vmlinux-d0c22de9.xz kernel image: https://storage.googleapis.com/syzbot-assets/55af41f29bbe/bzImage-d0c22de9.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a43c95e5c2c9ed88e966@syzkaller.appspotmail.com usb read operation failed. (-71) ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(__owner_task(owner) != get_current()) WARNING: CPU: 0 PID: 8723 at kernel/locking/mutex.c:918 __mutex_unlock_slowpath+0x22e/0x700 kernel/locking/mutex.c:918 Modules linked in: CPU: 0 UID: 0 PID: 8723 Comm: syz.3.840 Not tainted 6.15.0-rc7-syzkaller-00152-gd0c22de9995b #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:__mutex_unlock_slowpath+0x22e/0x700 kernel/locking/mutex.c:918 Code: 0f b6 04 03 84 c0 0f 85 d1 00 00 00 83 3d 7d 74 27 04 00 75 19 90 48 c7 c7 e0 d1 6a 8b 48 c7 c6 60 d9 6a 8b e8 73 5e 2c f6 90 <0f> 0b 90 90 90 48 89 da e9 29 ff ff ff 48 89 d3 90 e8 ac b9 5d f9 RSP: 0018:ffffc90003a3f700 EFLAGS: 00010246 RAX: abeb948675ff2100 RBX: 1ffffffff1efec8a RCX: 0000000000080000 RDX: ffffc9000c84b000 RSI: 000000000000ac87 RDI: 000000000000ac88 RBP: ffffc90003a3f810 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1bba984 R12: ffffc90003a3f7a0 R13: 1ffff92000747ee8 R14: 1ffffffff33020d4 R15: ffff88807c620000 FS: 00007f8f910ac6c0(0000) GS:ffff8881260c2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8f9108bd58 CR3: 0000000027662000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: az6007_i2c_xfer+0xb65/0xb90 drivers/media/usb/dvb-usb-v2/az6007.c:827 __i2c_transfer+0x871/0x2170 drivers/i2c/i2c-core-base.c:-1 i2c_smbus_xfer_emulated drivers/i2c/i2c-core-smbus.c:469 [inline] __i2c_smbus_xfer+0xfb0/0x1e50 drivers/i2c/i2c-core-smbus.c:607 i2c_smbus_xfer+0x275/0x3c0 drivers/i2c/i2c-core-smbus.c:545 i2cdev_ioctl_smbus+0x43d/0x6d0 drivers/i2c/i2c-dev.c:389 i2cdev_ioctl+0x5d3/0x7f0 drivers/i2c/i2c-dev.c:478 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8f9018e969 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8f910ac038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f8f903b5fa0 RCX: 00007f8f9018e969 RDX: 00002000000000c0 RSI: 0000000000000720 RDI: 0000000000000006 RBP: 00007f8f90210ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f8f903b5fa0 R15: 00007f8f904dfa28 --- 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 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