------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(lock->magic != lock)
WARNING: kernel/locking/mutex.c:625 at __mutex_lock_common kernel/locking/mutex.c:625 [inline], CPU#1: syz.0.5754/25185
WARNING: kernel/locking/mutex.c:625 at __mutex_lock+0x1303/0x1550 kernel/locking/mutex.c:820, CPU#1: syz.0.5754/25185
Modules linked in:
CPU: 1 UID: 0 PID: 25185 Comm: syz.0.5754 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:625 [inline]
RIP: 0010:__mutex_lock+0x130a/0x1550 kernel/locking/mutex.c:820
Code: 30 90 48 c1 e8 03 42 0f b6 04 30 84 c0 0f 85 1b 02 00 00 83 3d da 8d 87 04 00 75 13 48 8d 3d 8d a5 8a 04 48 c7 c6 a0 da cc 8b <67> 48 0f b9 3a 90 e9 50 ee ff ff 90 0f 0b 90 e9 4e f2 ff ff 90 0f
RSP: 0018:ffffc90004327a20 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90010151000 RSI: ffffffff8bccdaa0 RDI: ffffffff9033e180
RBP: ffffc90004327bd8 R08: ffffffff9030c9c3 R09: 1ffffffff2061938
R10: dffffc0000000000 R11: fffffbfff2061939 R12: ffff88807c900b30
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000864f5c
FS:  00007f2920f896c0(0000) GS:ffff888125393000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3f3531 CR3: 000000007b347000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 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+0x470/0x540 drivers/media/dvb-core/dmxdev.c:1083
 dvb_usercopy+0x199/0x2e0 drivers/media/dvb-core/dvbdev.c:996
 dvb_demux_ioctl+0x29/0x40 drivers/media/dvb-core/dmxdev.c:1201
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f292019cdd9
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:00007f2920f89028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f2920415fa0 RCX: 00007f292019cdd9
RDX: 0000200000000200 RSI: 00000000403c6f2b RDI: 0000000000000004
RBP: 00007f2920232d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2920416038 R14: 00007f2920415fa0 R15: 00007ffe27270958
 </TASK>
----------------
Code disassembly (best guess):
   0:	30 90 48 c1 e8 03    	xor    %dl,0x3e8c148(%rax)
   6:	42 0f b6 04 30       	movzbl (%rax,%r14,1),%eax
   b:	84 c0                	test   %al,%al
   d:	0f 85 1b 02 00 00    	jne    0x22e
  13:	83 3d da 8d 87 04 00 	cmpl   $0x0,0x4878dda(%rip)        # 0x4878df4
  1a:	75 13                	jne    0x2f
  1c:	48 8d 3d 8d a5 8a 04 	lea    0x48aa58d(%rip),%rdi        # 0x48aa5b0
  23:	48 c7 c6 a0 da cc 8b 	mov    $0xffffffff8bccdaa0,%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	90                   	nop
  30:	e9 50 ee ff ff       	jmp    0xffffee85
  35:	90                   	nop
  36:	0f 0b                	ud2
  38:	90                   	nop
  39:	e9 4e f2 ff ff       	jmp    0xfffff28c
  3e:	90                   	nop
  3f:	0f                   	.byte 0xf