dvbdev: DVB: registering new adapter (TwinhanDTV StarBox DVB-S USB2.0 (VP7021)) usb 2-1: media controller created ------------[ 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: kworker/1:3/5689 WARNING: kernel/locking/mutex.c:625 at __mutex_lock+0x12e6/0x1550 kernel/locking/mutex.c:821, CPU#1: kworker/1:3/5689 Modules linked in: CPU: 1 UID: 0 PID: 5689 Comm: kworker/1:3 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: usb_hub_wq hub_event RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:625 [inline] RIP: 0010:__mutex_lock+0x12ed/0x1550 kernel/locking/mutex.c:821 Code: f4 9a 90 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 47 02 00 00 83 3d 57 f1 af 04 00 75 13 48 8d 3d ea ec b2 04 48 c7 c6 e0 11 0d 8c <67> 48 0f b9 3a 90 e9 67 ee ff ff 90 0f 0b 90 e9 3a f2 ff ff 90 0f RSP: 0018:ffffc90004096880 EFLAGS: 00010246 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000100000 RDX: ffffc900184e0000 RSI: ffffffff8c0d11e0 RDI: ffffffff909df020 RBP: ffffc90004096a20 R08: ffffffff909af483 R09: 1ffffffff2135e90 R10: dffffc0000000000 R11: fffffbfff2135e91 R12: ffff88802a118e00 R13: 0000000000000000 R14: 1ffff92000812d24 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881249ab000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2d2e2b7ff8 CR3: 0000000021fd2000 CR4: 00000000003526f0 Call Trace: vp702x_read_mac_addr+0x53/0x500 drivers/media/usb/dvb-usb/vp702x.c:297 dvb_usb_adapter_dvb_init+0x95a/0xdb0 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:165 dvb_usb_adapter_init drivers/media/usb/dvb-usb/dvb-usb-init.c:86 [inline] dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:186 [inline] dvb_usb_device_init+0x1c05/0x2570 drivers/media/usb/dvb-usb/dvb-usb-init.c:310 vp702x_usb_probe+0x9c/0x200 drivers/media/usb/dvb-usb/vp702x.c:342 usb_probe_interface+0x788/0xe50 drivers/usb/core/driver.c:399 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x254/0xae0 drivers/base/dd.c:706 __driver_probe_device+0x1e8/0x360 drivers/base/dd.c:868 driver_probe_device+0x4f/0x240 drivers/base/dd.c:898 __device_attach_driver+0x270/0x410 drivers/base/dd.c:1026 bus_for_each_drv+0x258/0x2f0 drivers/base/bus.c:500 __device_attach+0x2c4/0x450 drivers/base/dd.c:1098 device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1153 bus_probe_device+0x12a/0x220 drivers/base/bus.c:620 device_add+0x7d7/0xb80 drivers/base/core.c:3776 usb_set_configuration+0x1ad8/0x2180 drivers/usb/core/message.c:2268 usb_generic_driver_probe+0x8d/0x150 drivers/usb/core/generic.c:250 usb_probe_device+0x1c3/0x3b0 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x254/0xae0 drivers/base/dd.c:706 __driver_probe_device+0x1e8/0x360 drivers/base/dd.c:868 driver_probe_device+0x4f/0x240 drivers/base/dd.c:898 __device_attach_driver+0x270/0x410 drivers/base/dd.c:1026 bus_for_each_drv+0x258/0x2f0 drivers/base/bus.c:500 __device_attach+0x2c4/0x450 drivers/base/dd.c:1098 device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1153 bus_probe_device+0x12a/0x220 drivers/base/bus.c:620 device_add+0x7d7/0xb80 drivers/base/core.c:3776 usb_new_device+0x9aa/0x1690 drivers/usb/core/hub.c:2708 hub_port_connect drivers/usb/core/hub.c:5580 [inline] hub_port_connect_change drivers/usb/core/hub.c:5720 [inline] port_event drivers/usb/core/hub.c:5884 [inline] hub_event+0x28e8/0x4d30 drivers/usb/core/hub.c:5966 process_one_work kernel/workqueue.c:3387 [inline] process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3470 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3551 kthread+0x38b/0x480 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 90 nop 1: 48 c1 e8 03 shr $0x3,%rax 5: 0f b6 04 18 movzbl (%rax,%rbx,1),%eax 9: 84 c0 test %al,%al b: 0f 85 47 02 00 00 jne 0x258 11: 83 3d 57 f1 af 04 00 cmpl $0x0,0x4aff157(%rip) # 0x4aff16f 18: 75 13 jne 0x2d 1a: 48 8d 3d ea ec b2 04 lea 0x4b2ecea(%rip),%rdi # 0x4b2ed0b 21: 48 c7 c6 e0 11 0d 8c mov $0xffffffff8c0d11e0,%rsi * 28: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2d: 90 nop 2e: e9 67 ee ff ff jmp 0xffffee9a 33: 90 nop 34: 0f 0b ud2 36: 90 nop 37: e9 3a f2 ff ff jmp 0xfffff276 3c: 90 nop 3d: 0f .byte 0xf