------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(lock->magic != lock)
WARNING: CPU: 1 PID: 4533 at kernel/locking/mutex.c:575 __mutex_lock_common+0x193b/0x2400 kernel/locking/mutex.c:575
Modules linked in:
CPU: 0 PID: 4533 Comm: syz.1.28 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
RIP: 0010:__mutex_lock_common+0x193b/0x2400 kernel/locking/mutex.c:575
Code: 00 00 83 3d 9e 46 9b 04 00 4c 8d b4 24 e0 00 00 00 0f 85 02 e8 ff ff 48 c7 c7 60 1a 2b 8a 48 c7 c6 a0 1a 2b 8a e8 75 6a ec ff <0f> 0b e9 e8 e7 ff ff e8 a9 5d 2e f7 e9 41 fb ff ff 0f 0b e9 63 f1
RSP: 0018:ffffc90003f2f540 EFLAGS: 00010246
RAX: fb22c9e763d85b00 RBX: ffff88802bc3c010 RCX: 0000000000080000
RDX: ffffc90004b49000 RSI: 0000000000002c41 RDI: 0000000000002c42
RBP: ffffc90003f2f6d0 R08: ffff8880b8f2795b R09: 1ffff110171e4f2b
R10: dffffc0000000000 R11: ffffed10171e4f2c R12: 0000000000000000
R13: dffffc0000000000 R14: ffffc90003f2f620 R15: 0000000000000000
FS:  00007f25811fe6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3271aff8 CR3: 000000001f21a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __mutex_lock kernel/locking/mutex.c:729 [inline]
 mutex_lock_interruptible_nested+0x17/0x20 kernel/locking/mutex.c:765
 as102_stream_ctrl+0x23/0xb0 drivers/media/usb/as102/as102_drv.c:259
 dvb_frontend_open+0x52c/0x12d0 drivers/media/dvb-core/dvb_frontend.c:2812
 dvb_device_open+0x269/0x360 drivers/media/dvb-core/dvbdev.c:119
 chrdev_open+0x585/0x5f0 fs/char_dev.c:414
 do_dentry_open+0x7f7/0xf90 fs/open.c:826
 do_open fs/namei.c:3659 [inline]
 path_openat+0x2718/0x2fb0 fs/namei.c:3793
 do_filp_open+0x1df/0x400 fs/namei.c:3820
 do_sys_openat2+0x14b/0x500 fs/open.c:1255
 do_sys_open fs/open.c:1271 [inline]
 __do_sys_openat fs/open.c:1287 [inline]
 __se_sys_openat fs/open.c:1282 [inline]
 __x64_sys_openat+0x135/0x160 fs/open.c:1282
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f2582f6834e
Code: 08 0f 85 a5 a8 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 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007f25811fdb28 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f25811fe6c0 RCX: 00007f2582f6834e
RDX: 0000000000000802 RSI: 00007f25811fdc00 RDI: ffffffffffffff9c
RBP: 00007f25811fdc00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd
R13: 00007f258322e038 R14: 00007f258322dfa0 R15: 00007ffc758d3de8
 </TASK>