usb 1-1: dvb_usb_v2: found a 'Hauppauge Mercury' in warm state usb 1-1: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer dvbdev: DVB: registering new adapter (Hauppauge Mercury) usb 1-1: media controller created dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. usb 1-1: selecting invalid altsetting 1 set interface failed ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(lock->magic != lock) WARNING: CPU: 0 PID: 8 at kernel/locking/mutex.c:941 __mutex_lock_common kernel/locking/mutex.c:941 [inline] WARNING: CPU: 0 PID: 8 at kernel/locking/mutex.c:941 __mutex_lock+0xbc0/0x10c0 kernel/locking/mutex.c:1104 Modules linked in: CPU: 0 PID: 8 Comm: kworker/0:2 Not tainted 5.13.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:941 [inline] RIP: 0010:__mutex_lock+0xbc0/0x10c0 kernel/locking/mutex.c:1104 Code: 08 84 d2 0f 85 b7 04 00 00 8b 05 23 9b b1 04 85 c0 0f 85 5d f5 ff ff 48 c7 c6 c0 a7 6b 89 48 c7 c7 80 a5 6b 89 e8 a3 e3 bc ff <0f> 0b e9 43 f5 ff ff 65 48 8b 1c 25 00 f0 01 00 be 08 00 00 00 48 RSP: 0018:ffffc90000cd6dd0 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff8880123454c0 RSI: ffffffff815cdf95 RDI: fffff5200019adac RBP: ffff8880355709d8 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815c7dfe R11: 0000000000000000 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff888035570958 R15: 0000