invalid opcode: 0000 [#1] SMP
CPU: 1 PID: 8415 Comm: kworker/1:3 Not tainted 5.8.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
RIP: 0010:tda8083_readreg_check+0x71/0x80 drivers/media/dvb-frontends/tda8083.c:92
Code: 08 00 48 c7 43 10 00 00 00 00 c6 43 18 00 c7 83 20 03 00 00 00 00 00 00 4c 89 f7 31 f6 4c 89 fa b9 01 00 00 00 e8 0f 00 00 00 <0f> 0b 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41
RSP: 0018:ffff888105f929c8 EFLAGS: 00010297
RAX: 00000000ffffffff RBX: ffff88810389e558 RCX: ffff88810389db01
RDX: 9916e542c5283d00 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff888105f929f8 R08: ffffffff8ae91f06 R09: ffff88812fffa000
R10: 0000000000000004 R11: 00000000ffffffff R12: 0000000000000000
R13: 0000000000000000 R14: ffff8880ac9df000 R15: ffff888105f929cf
FS:  0000000000000000(0000) GS:ffff88812fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055a3697a9a30 CR3: 00000000b662f000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 tda8083_attach+0x228/0x230 drivers/media/dvb-frontends/tda8083.c:443
 frontend_init drivers/media/usb/ttusb-budget/dvb-ttusb-budget.c:1574 [inline]
 ttusb_probe+0x4238/0x5040 drivers/media/usb/ttusb-budget/dvb-ttusb-budget.c:1739
 usb_probe_interface+0xece/0x1550 drivers/usb/core/driver.c:374
 really_probe+0xf20/0x20b0 drivers/base/dd.c:529
 driver_probe_device+0x293/0x390 drivers/base/dd.c:701
 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:807
 bus_for_each_drv+0x2ca/0x3f0 drivers/base/bus.c:431
 __device_attach+0x4e2/0x7f0 drivers/base/dd.c:873
 device_initial_probe+0x4a/0x60 drivers/base/dd.c:920
 bus_probe_device+0x177/0x3d0 drivers/base/bus.c:491
 device_add+0x3b0e/0x40d0 drivers/base/core.c:2680
 usb_set_configuration+0x380f/0x3f10 drivers/usb/core/message.c:2032
 usb_generic_driver_probe+0x138/0x300 drivers/usb/core/generic.c:241
 usb_probe_device+0x311/0x490 drivers/usb/core/driver.c:272
 really_probe+0xf20/0x20b0 drivers/base/dd.c:529
 driver_probe_device+0x293/0x390 drivers/base/dd.c:701
 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:807
 bus_for_each_drv+0x2ca/0x3f0 drivers/base/bus.c:431
 __device_attach+0x4e2/0x7f0 drivers/base/dd.c:873
 device_initial_probe+0x4a/0x60 drivers/base/dd.c:920
 bus_probe_device+0x177/0x3d0 drivers/base/bus.c:491
 device_add+0x3b0e/0x40d0 drivers/base/core.c:2680
 usb_new_device+0x1bd4/0x2a30 drivers/usb/core/hub.c:2554
 hub_port_connect drivers/usb/core/hub.c:5208 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5348 [inline]
 port_event drivers/usb/core/hub.c:5494 [inline]
 hub_event+0x5e7b/0x8a70 drivers/usb/core/hub.c:5576
 process_one_work+0x1688/0x2140 kernel/workqueue.c:2269
 worker_thread+0x10bc/0x2730 kernel/workqueue.c:2415
 kthread+0x551/0x590 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293
Modules linked in:
---[ end trace ec2e9907a0c23cb6 ]---
RIP: 0010:tda8083_readreg_check+0x71/0x80 drivers/media/dvb-frontends/tda8083.c:92
Code: 08 00 48 c7 43 10 00 00 00 00 c6 43 18 00 c7 83 20 03 00 00 00 00 00 00 4c 89 f7 31 f6 4c 89 fa b9 01 00 00 00 e8 0f 00 00 00 <0f> 0b 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41
RSP: 0018:ffff888105f929c8 EFLAGS: 00010297
RAX: 00000000ffffffff RBX: ffff88810389e558 RCX: ffff88810389db01
RDX: 9916e542c5283d00 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff888105f929f8 R08: ffffffff8ae91f06 R09: ffff88812fffa000
R10: 0000000000000004 R11: 00000000ffffffff R12: 0000000000000000
R13: 0000000000000000 R14: ffff8880ac9df000 R15: ffff888105f929cf
FS:  0000000000000000(0000) GS:ffff88812fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055a3697a9a30 CR3: 00000000b662f000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400