------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(lock->magic != lock)
WARNING: CPU: 1 PID: 4446 at kernel/locking/mutex.c:582 __mutex_lock_common kernel/locking/mutex.c:582 [inline]
WARNING: CPU: 1 PID: 4446 at kernel/locking/mutex.c:582 __mutex_lock+0xa1c/0xae0 kernel/locking/mutex.c:747
Modules linked in:
CPU: 1 PID: 4446 Comm: syz.4.21 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:582 [inline]
RIP: 0010:__mutex_lock+0xa1c/0xae0 kernel/locking/mutex.c:747
Code: 04 20 84 c0 0f 85 b3 00 00 00 83 3d 45 60 e7 03 00 0f 85 f5 f6 ff ff 48 c7 c7 a0 02 8c 8a 48 c7 c6 40 03 8c 8a e8 a4 cb 13 f7 <0f> 0b e9 db f6 ff ff 0f 0b e9 89 f9 ff ff 48 c7 c1 40 91 c1 96 80
RSP: 0000:ffffc900048ff580 EFLAGS: 00010246
RAX: 66a3963727445d00 RBX: ffff8880745f4010 RCX: 0000000000080000
RDX: ffffc9000f833000 RSI: 0000000000002be5 RDI: 0000000000002be6
RBP: ffffc900048ff6e0 R08: ffff8880b8f279db R09: 1ffff110171e4f3b
R10: dffffc0000000000 R11: ffffed10171e4f3c R12: dffffc0000000000
R13: 0000000000000000 R14: ffff8880745f4008 R15: 0000000000000000
FS:  00007f4ad64806c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3001dff8 CR3: 000000001ea5c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 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:2809
 dvb_device_open+0x269/0x360 drivers/media/dvb-core/dvbdev.c:109
 chrdev_open+0x585/0x5f0 fs/char_dev.c:414
 do_dentry_open+0x7dd/0x10b0 fs/open.c:882
 do_open fs/namei.c:3634 [inline]
 path_openat+0x2674/0x2f10 fs/namei.c:3791
 do_filp_open+0x1ee/0x420 fs/namei.c:3818
 do_sys_openat2+0x14b/0x4f0 fs/open.c:1320
 do_sys_open fs/open.c:1336 [inline]
 __do_sys_openat fs/open.c:1352 [inline]
 __se_sys_openat fs/open.c:1347 [inline]
 __x64_sys_openat+0x135/0x160 fs/open.c:1347
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f4ad555e90e
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:00007f4ad647fb28 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f4ad64806c0 RCX: 00007f4ad555e90e
RDX: 0000000000000802 RSI: 00007f4ad647fc00 RDI: ffffffffffffff9c
RBP: 00007f4ad647fc00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd
R13: 00007f4ad5826128 R14: 00007f4ad5826090 R15: 00007ffdf096e718
 </TASK>